{"id":66401,"date":"2026-07-29T08:00:29","date_gmt":"2026-07-28T23:00:29","guid":{"rendered":"https:\/\/norimen.net\/?p=66401"},"modified":"2026-07-27T00:02:53","modified_gmt":"2026-07-26T15:02:53","slug":"enta-blog-thu-nghiem-chap-nhan-coc-neo-dat-tai-trong-20260726","status":"publish","type":"post","link":"https:\/\/norimen.net\/vi\/enta-blog-soil-nailing-acceptance-test-load-20260726\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m ki\u1ec3m tra \u0111\u1ed1i v\u1edbi c\u00f4ng vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p? | C\u00e1ch ti\u1ebfp c\u1eadn \u0111\u1ed1i v\u1edbi l\u1ef1c k\u00e9o thi\u1ebft k\u1ebf Td v\u00e0 th\u1eed nghi\u1ec7m nghi\u1ec7m thu"},"content":{"rendered":"<p>Xin ch\u00e0o m\u1ecdi ng\u01b0\u1eddi.<\/p>\n<p>\u0110\u00e2y l\u00e0 Enta.<\/p>\n<p>M\u00f9a h\u00e8 \u0111ang v\u00e0o cao \u0111i\u1ec3m, c\u00f4ng tr\u01b0\u1eddng n\u00f3ng nh\u01b0 l\u00f2 l\u1eeda.<\/p>\n<p>Tr\u00ean gi\u00e0n gi\u00e1o, do c\u00f3 \u00e1nh n\u1eafng ph\u1ea3n chi\u1ebfu t\u1eeb m\u1eb7t \u0111\u1ea5t n\u00ean tr\u1eddi n\u00f3ng kh\u1ee7ng khi\u1ebfp th\u1eadt.<\/p>\n<p>M\u1edbi \u0111\u00e2y, ngay t\u1eeb s\u00e1ng s\u1edbm, khi v\u1eeba ho\u00e0n th\u00e0nh vi\u1ec7c x\u1ebfp \u0111\u00e1, t\u00f4i \u0111\u00e3 \u01b0\u1edbt \u0111\u1eabm m\u1ed3 h\u00f4i r\u1ed3i (c\u01b0\u1eddi)<\/p>\n<p>Khi c\u00f2n \u0111ang \u1edf giai \u0111o\u1ea1n \u201cm\u1edbi b\u1eaft \u0111\u1ea7u\u201d th\u00ec c\u1ee9 l\u1ec1 m\u1ec1 th\u1ebf n\u00e0y (c\u01b0\u1eddi)<\/p>\n<hr \/>\n<p>Th\u00f4i, quay l\u1ea1i ch\u1ee7 \u0111\u1ec1 ch\u00ednh<\/p>\n<p>L\u1ea7n n\u00e0y, ch\u00fang ta s\u1ebd n\u00f3i v\u1ec1 t\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m x\u00e1c nh\u1eadn \u0111\u1ed1i v\u1edbi c\u00f4ng t\u00e1c l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p (c\u00f4ng t\u00e1c l\u1eafp \u0111\u1eb7t bu-l\u00f4ng neo).<\/p>\n<p>Th\u00f4ng th\u01b0\u1eddng, \u1edf h\u1ea7u h\u1ebft c\u00e1c c\u00f4ng tr\u01b0\u1eddng, t\u1ea3i tr\u1ecdng c\u1ee7a c\u00f4ng vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p \u0111\u1ec1u \u0111\u01b0\u1ee3c ghi r\u00f5 trong b\u1ea3n t\u00ednh to\u00e1n thi\u1ebft k\u1ebf, ph\u1ea3i kh\u00f4ng?<\/p>\n<p>\u0110\u00f3 l\u00e0 c\u00e1i g\u1ecdi l\u00e0 Td = \u25cb\u25cb kN.<\/p>\n<p>C\u00e1c gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea theo t\u1eebng b\u1eadc c\u1ee7a m\u1eb7t d\u1ed1c, v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp theo d\u1ea1ng: b\u1eadc th\u1ee9 nh\u1ea5t l\u00e0 bao nhi\u00eau, b\u1eadc th\u1ee9 hai l\u00e0 bao nhi\u00eau, v.v.<\/p>\n<p>T\u00f4i ngh\u0129 ch\u1eafc h\u1eb3n s\u1ebd c\u00f3 ng\u01b0\u1eddi v\u1eeba xem b\u1ea3n thi\u1ebft k\u1ebf \u0111\u00f3 v\u1eeba t\u1ef1 h\u1ecfi: \u201cV\u1eady r\u1ed1t cu\u1ed9c th\u00ec c\u1ea7n x\u00e1c nh\u1eadn bao nhi\u00eau l\u1ea7n trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra x\u00e1c nh\u1eadn \u0111\u00e2y?\u201d<\/p>\n<p>Sau khi \u0111\u00e3 n\u1eafm r\u00f5 nh\u1eefng g\u00ec \u0111\u01b0\u1ee3c n\u00eau trong ti\u00eau chu\u1ea9n, t\u00f4i s\u1ebd tr\u00ecnh b\u00e0y quan \u0111i\u1ec3m c\u1ee7a m\u00ecnh d\u1ef1a tr\u00ean th\u1ef1c ti\u1ec5n t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-66402\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/07\/f897796c0b2af1fdbb5b9feedb7f3b18.png\" alt=\"T\u1ea3i tr\u1ecdng c\u1ee7a c\u00f4ng vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p\" width=\"600\" height=\"400\" \/><\/p>\n<hr \/>\n<h2>Con s\u1ed1 Td trong b\u1ea3n t\u00ednh to\u00e1n thi\u1ebft k\u1ebf th\u1ef1c ch\u1ea5t l\u00e0 con s\u1ed1 g\u00ec?<\/h2>\n<p>Tr\u01b0\u1edbc ti\u00ean, h\u00e3y b\u1eaft \u0111\u1ea7u t\u1eeb vi\u1ec7c Td l\u00e0 g\u00ec.<\/p>\n<p>Theo H\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt v\u1ec1 c\u00e1c bi\u1ec7n ph\u00e1p x\u1eed l\u00fd s\u01b0\u1eddn d\u1ed1c \u201cThi\u1ebft k\u1ebf v\u00e0 thi c\u00f4ng c\u00f4ng tr\u00ecnh gia c\u1ed1 n\u1ec1n \u0111\u1ea5t\u201d, l\u1ef1c k\u00e9o cho ph\u00e9p Ta c\u1ee7a v\u1eadt li\u1ec7u gia c\u1ed1 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 gi\u00e1 tr\u1ecb nh\u1ecf nh\u1ea5t trong ba gi\u00e1 tr\u1ecb.<\/p>\n<p><strong>Kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c k\u00e9o cho ph\u00e9p c\u1ee7a kh\u1ed1i \u0111\u1ea5t b\u1ecb d\u1ecbch chuy\u1ec3n<\/strong>\u3001<strong>Kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c k\u00e9o cho ph\u00e9p c\u1ee7a kh\u1ed1i \u0111\u1ea5t kh\u00f4ng di chuy\u1ec3n<\/strong>, v\u00e0<strong>L\u1ef1c k\u00e9o cho ph\u00e9p c\u1ee7a ch\u00ednh v\u1eadt li\u1ec7u l\u00f5i<\/strong>\u3002<\/p>\n<p>Trong ba gi\u00e1 tr\u1ecb n\u00e0y, gi\u00e1 tr\u1ecb nh\u1ecf nh\u1ea5t ch\u00ednh l\u00e0 Ta.<\/p>\n<p>Tr\u00ean c\u01a1 s\u1edf \u0111\u00f3, l\u1ef1c k\u00e9o thi\u1ebft k\u1ebf Td l\u00e0 nh\u01b0 sau.<\/p>\n<p>Td = \u03bb \u00d7 Ta<\/p>\n<p>\u03bb l\u00e0 h\u1ec7 s\u1ed1 gi\u1ea3m l\u1ef1c k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u gia c\u1ed1, \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh l\u00e0 0,7.<\/p>\n<p>&nbsp;<\/p>\n<p>N\u00f3i c\u00e1ch kh\u00e1c, Td ch\u00ednh l\u00e0 gi\u00e1 tr\u1ecb thu \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch nh\u00e2n l\u1ef1c k\u00e9o cho ph\u00e9p v\u1edbi 0,7 r\u1ed3i l\u1ea5y k\u1ebft qu\u1ea3 chia \u0111i.<\/p>\n<p>\u0110i\u1ec1u c\u1ea7n l\u01b0u \u00fd \u1edf \u0111\u00e2y l\u00e0 trong t\u00ednh to\u00e1n c\u00f4ng vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p s\u1ebd xu\u1ea5t hi\u1ec7n hai lo\u1ea1i h\u1ec7 s\u1ed1 gi\u1ea3m.<\/p>\n<p>M\u1ed9t l\u00e0 \u03bb hi\u1ec7n t\u1ea1i, c\u00f2n m\u1ed9t l\u00e0 h\u1ec7 s\u1ed1 gi\u1ea3m ma s\u00e1t \u03bc c\u1ee7a c\u00f4ng tr\u00ecnh gia c\u1ed1 m\u1eb7t d\u1ed1c s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp sau.<\/p>\n<p>M\u1eb7c d\u00f9 c\u00f9ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201ch\u1ec7 s\u1ed1 gi\u1ea3m\u201d, nh\u01b0ng b\u1ea3n ch\u1ea5t c\u1ee7a ch\u00fang l\u1ea1i kh\u00e1c nhau: \u03bb l\u00e0 m\u1ed9t gi\u00e1 tr\u1ecb c\u1ed1 \u0111\u1ecbnh l\u00e0 0,7, trong khi \u03bc l\u00e0 gi\u00e1 tr\u1ecb thay \u0111\u1ed5i t\u00f9y theo \u0111i\u1ec1u ki\u1ec7n.<\/p>\n<p>Ngay c\u1ea3 trong t\u00ednh to\u00e1n thi\u1ebft k\u1ebf, \u03bb v\u00e0 \u03bc t\u1ea5t nhi\u00ean c\u0169ng l\u00e0 hai \u0111\u1ea1i l\u01b0\u1ee3ng kh\u00e1c nhau.<\/p>\n<p>\u03bc (mu) = h\u1ec7 s\u1ed1 ma s\u00e1t<\/p>\n<p>\u03bb (Lambda) = h\u1ec7 s\u1ed1 gi\u1ea3m<\/p>\n<p>V\u00ec b\u1ecb l\u00e3o th\u1ecb n\u00ean c\u00e1c k\u00fd hi\u1ec7u tr\u00f4ng kh\u00e1 gi\u1ed1ng nhau \u2013 hay n\u00f3i \u0111\u00fang h\u01a1n l\u00e0 t\u00f4i \u0111\u00e3 kh\u00f4ng nh\u00ecn r\u00f5 n\u1eefa r\u1ed3i (c\u01b0\u1eddi) \u2013 n\u00ean khi \u0111\u1ecdc b\u1ea3ng t\u00ednh, t\u1ed1t nh\u1ea5t l\u00e0 n\u00ean ch\u00fa \u00fd xem \u0111ang n\u00f3i \u0111\u1ebfn n\u1ed9i dung n\u00e0o...<\/p>\n<p>L\u00fd do t\u1ea1i sao l\u1ea1i ph\u1ea3i h\u1ea1 th\u1ea5p l\u00e0 v\u00ec ph\u01b0\u01a1ng ph\u00e1p gia c\u1ed1 n\u1ec1n \u0111\u1ea5t ch\u1ec9 t\u1ea1o ra l\u1ef1c k\u00e9o l\u00ean v\u1eadt li\u1ec7u gia c\u1ed1 khi n\u1ec1n \u0111\u1ea5t b\u1ecb bi\u1ebfn d\u1ea1ng.<\/p>\n<p>Trong h\u01b0\u1edbng d\u1eabn n\u00e0y c\u0169ng gi\u1ea3i th\u00edch r\u1eb1ng, do ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa n\u1ec1n \u0111\u1ea5t v\u00e0 v\u1eadt li\u1ec7u gia c\u1ed1, n\u00ean l\u1ef1c k\u00e9o th\u1ef1c t\u1ebf t\u00e1c d\u1ee5ng l\u00ean v\u1eadt li\u1ec7u gia c\u1ed1 kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i b\u1eb1ng l\u1ef1c k\u00e9o cho ph\u00e9p.<\/p>\n<p>Khi hi\u1ec3u \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 m\u1ed9t c\u00e1i nh\u00ecn m\u01a1 h\u1ed3 v\u1ec1 con s\u1ed1 Td, ph\u1ea3i kh\u00f4ng?<\/p>\n<p>Gi\u00e1 tr\u1ecb Td kh\u00f4ng ph\u1ea3i l\u00e0 gi\u00e1 tr\u1ecb \u0111o th\u1ef1c t\u1ebf cho th\u1ea5y \u201cv\u1eadt li\u1ec7u gia c\u1ed1 n\u00e0y lu\u00f4n ch\u1ecbu l\u1ef1c k\u00e9o v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 n\u00e0y\u201d.<\/p>\n<p>\u0110\u00e2y l\u00e0 gi\u1ea3 \u0111\u1ecbnh trong thi\u1ebft k\u1ebf, theo \u0111\u00f3 trong t\u00ednh to\u00e1n \u1ed5n \u0111\u1ecbnh, v\u1eadt li\u1ec7u gia c\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c d\u1ef1 ki\u1ebfn s\u1ebd c\u00f3 m\u1ee9c \u0111\u1ed9 ch\u1ecbu l\u1ef1c nh\u01b0 v\u1eady.<\/p>\n<p>Trong thi\u1ebft k\u1ebf, hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00f4ng tr\u00ecnh gia c\u1ed1 m\u00e1i d\u1ed1c \u0111\u01b0\u1ee3c d\u1ef1 ki\u1ebfn d\u01b0\u1edbi d\u1ea1ng \u201ch\u1ec7 s\u1ed1 gi\u1ea3m \u03bc c\u1ee7a c\u00f4ng tr\u00ecnh gia c\u1ed1 m\u00e1i d\u1ed1c\u201d.<\/p>\n<p>T\u1ea1i trang 50 c\u1ee7a \u201cH\u01b0\u1edbng d\u1eabn thi\u1ebft k\u1ebf v\u00e0 thi c\u00f4ng ph\u01b0\u01a1ng ph\u00e1p gia c\u1ed1 \u0111\u1ea5t \u0111\u00e0o\u201d (C\u00f4ng ty C\u1ed5 ph\u1ea7n \u0110\u01b0\u1eddng cao t\u1ed1c \u0110\u00f4ng, Trung v\u00e0 T\u00e2y Nh\u1eadt B\u1ea3n, th\u00e1ng 1 n\u0103m Heisei 19), \u0111\u00e3 n\u00eau ra c\u00e1c gi\u00e1 tr\u1ecb tham kh\u1ea3o c\u1ee7a \u03bc theo t\u1eebng lo\u1ea1i c\u00f4ng tr\u00ecnh gia c\u1ed1 m\u1eb7t d\u1ed1c.<\/p>\n<p>C\u1ee5 th\u1ec3, \u0111\u1ed1i v\u1edbi c\u00f4ng tr\u00ecnh phun b\u00ea t\u00f4ng l\u00e0 0,2\u20130,6, c\u00f4ng tr\u00ecnh gia c\u1ed1 m\u1eb7t d\u1ed1c l\u00e0 0,7\u20131,0, c\u00e1c lo\u1ea1i t\u01b0\u1eddng ch\u1eafn l\u00e0 1,0 (c\u00f4ng tr\u00ecnh gia c\u1ed1 m\u1eb7t d\u1ed1c d\u1ea1ng t\u1ea5m li\u00ean t\u1ee5c).<\/p>\n<p>\u0110\u00e2y ch\u1ec9 l\u00e0 con s\u1ed1 tham kh\u1ea3o.<\/p>\n<p>An to\u00e0n ch\u1ed3ng l\u00ean an to\u00e0n, \u0111\u00fang l\u00e0 m\u1ed9t kh\u1ed1i an to\u00e0n r\u1ed3i (d\u00f9 c\u00f4ng ngh\u1ec7 neo \u0111\u1ea5t c\u00f2n an to\u00e0n h\u01a1n n\u1eefa)<\/p>\n<p>Theo nguy\u00ean t\u1eafc, \u03bc l\u00e0 gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n d\u1ef1a tr\u00ean h\u1ec7 s\u1ed1 b\u00e1m d\u00ednh c\u1ee7a m\u1eb7t d\u1ed1c.<\/p>\n<p>H\u1ec7 s\u1ed1 \u1ed5n \u0111\u1ecbnh taluy fa = L \u00f7 (B\u00b2 \u00d7 S)<\/p>\n<p>L l\u00e0 chi\u1ec1u d\u00e0i v\u1eadt li\u1ec7u gia c\u1ed1, B l\u00e0 chi\u1ec1u r\u1ed9ng b\u1ec1 m\u1eb7t hi\u1ec7u d\u1ee5ng tr\u00ean m\u1ed7i thanh v\u1eadt li\u1ec7u gia c\u1ed1, S l\u00e0 kho\u1ea3ng c\u00e1ch thi c\u00f4ng trung b\u00ecnh gi\u1eefa c\u00e1c thanh v\u1eadt li\u1ec7u gia c\u1ed1.<\/p>\n<p>&nbsp;<\/p>\n<p>N\u00f3i c\u00e1ch kh\u00e1c, \u03bc s\u1ebd thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0i c\u1ee7a v\u1eadt li\u1ec7u gia c\u1ed1, kho\u1ea3ng c\u00e1ch \u0111\u1ed5 b\u00ea t\u00f4ng c\u00e0ng h\u1eb9p v\u00e0 chi\u1ec1u r\u1ed9ng hi\u1ec7u d\u1ee5ng c\u1ee7a c\u00f4ng tr\u00ecnh gia c\u1ed1 m\u00e1i d\u1ed1c c\u00e0ng nh\u1ecf.<\/p>\n<p>D\u00f9 c\u00f9ng l\u00e0 \u201ck\u1ebft c\u1ea5u khung d\u00e1n\u201d, t\u00f9y thu\u1ed9c v\u00e0o ti\u00eau chu\u1ea9n v\u00e0 c\u00e1ch b\u1ed1 tr\u00ed v\u1eadt li\u1ec7u gia c\u1ed1 m\u00e0 gi\u00e1 tr\u1ecb c\u00f3 th\u1ec3 nghi\u00eang v\u1ec1 ph\u00eda 0,7 ho\u1eb7c 1,0.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-48306\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2023\/01\/2023-01-16-14.17.21.jpg\" alt=\"K\u1ef9 thu\u1eadt vi\u00ean khung ph\u00e1p l\u00fd\" width=\"600\" height=\"450\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2023\/01\/2023-01-16-14.17.21.jpg 600w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2023\/01\/2023-01-16-14.17.21-300x225.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>Trong tr\u01b0\u1eddng h\u1ee3p l\u1ea5y \u03bc = 1,0, T1pa (l\u1ef1c kh\u00e1ng k\u00e9o cho ph\u00e9p ph\u00eda kh\u1ed1i \u0111\u1ea5t di chuy\u1ec3n) s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n.<\/p>\n<p>Trong t\u00ednh to\u00e1n thi\u1ebft k\u1ebf c\u0169ng c\u00f3 m\u1ee5c \u201cKh\u00f4ng t\u00ednh \u0111\u1ebfn T1pa (*t\u00ednh to\u00e1n v\u1edbi \u03bc = 1,0)\u201d.<\/p>\n<p>N\u00f3i c\u00e1ch kh\u00e1c, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0, v\u1edbi gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng c\u00f4ng tr\u00ecnh gia c\u1ed1 m\u1eb7t d\u1ed1c c\u1ee9ng \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t, vi\u1ec7c t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u00e0 kh\u00f4ng xem x\u00e9t \u0111\u1ebfn h\u01b0\u1edbng m\u00e0 v\u1eadt li\u1ec7u gia c\u1ed1 c\u00f3 th\u1ec3 b\u1ecb tr\u01b0\u1ee3t ra kh\u1ecfi ph\u00eda kh\u1ed1i \u0111\u1ea5t di chuy\u1ec3n.<\/p>\n<p>T\u1ea5t nhi\u00ean, vi\u1ec7c \u0111\u1eb7t gi\u00e1 tr\u1ecb \u03bc l\u00e0 bao nhi\u00eau l\u00e0 do ng\u01b0\u1eddi thi\u1ebft k\u1ebf quy\u1ebft \u0111\u1ecbnh.<\/p>\n<p>C\u00f3 nh\u1eefng b\u1ea3n t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c l\u1eadp d\u1ef1a tr\u00ean gi\u1ea3 \u0111\u1ecbnh an to\u00e0n v\u1edbi \u03bc = 0,7, c\u0169ng c\u00f3 nh\u1eefng b\u1ea3n t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c l\u1eadp d\u1ef1a tr\u00ean gi\u1ea3 \u0111\u1ecbnh \u03bc = 1,0.<\/p>\n<p>T\u00f4i ngh\u0129 c\u00e1c b\u1ea1n n\u00ean ki\u1ec3m tra m\u1ed9t l\u1ea7n xem b\u1ea3ng t\u00ednh t\u1ea1i c\u00f4ng tr\u01b0\u1eddng c\u1ee7a m\u00ecnh \u0111\u01b0\u1ee3c l\u1eadp theo b\u00ean n\u00e0o.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-66408\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/07\/ed9549e3ddf89679f40f4a1661e155b7-1.jpg\" alt=\"S\u01a1 \u0111\u1ed3 kh\u00e1i ni\u1ec7m m\u1eb7t c\u1eaft ngang c\u1ee7a c\u00f4ng \u0111o\u1ea1n l\u1eafp c\u1ed1t th\u00e9p\" width=\"600\" height=\"338\" \/><\/p>\n<p>\u0110\u00e2y ch\u1ec9 l\u00e0 kh\u00e1i ni\u1ec7m th\u00f4i, th\u1ef1c t\u1ebf b\u00ean trong \u0111\u1ea5t \u0111\u00e2u c\u00f3 ph\u00e2n chia r\u00f5 r\u00e0ng nh\u01b0 v\u1eady, ch\u1ec9 l\u00e0 kh\u00e1i ni\u1ec7m th\u00f4i w<\/p>\n<hr \/>\n<h2>C\u00e1c ti\u00eau chu\u1ea9n c\u1ee7a th\u1eed nghi\u1ec7m x\u00e1c nh\u1eadn (th\u1eed nghi\u1ec7m nghi\u1ec7m thu) \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n<p>V\u00e0 \u0111\u00e2y l\u00e0 t\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m.<\/p>\n<p>Ki\u1ec3m tra c\u00f4ng vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p l\u00e0 cu\u1ed9c ki\u1ec3m tra nghi\u1ec7m thu (ki\u1ec3m tra x\u00e1c nh\u1eadn) \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf giai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng<\/p>\n<p>C\u00f3 m\u1ed9t th\u1eed nghi\u1ec7m c\u01a1 b\u1ea3n \u0111\u1ec3 \u0111o \u03c4 (l\u1ef1c c\u1ea3n ma s\u00e1t b\u1ec1 m\u1eb7t), nh\u01b0ng l\u1ea7n n\u00e0y s\u1ebd kh\u00f4ng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn.<\/p>\n<p>C\u00e1c m\u1eabu th\u1eed nghi\u1ec7m x\u00e1c nh\u1eadn \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn t\u1eeb c\u00e1c v\u1eadt li\u1ec7u gia c\u1ed1 th\u1ef1c t\u1ebf \u0111ang \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng; b\u1ea5t k\u1ec3 \u1edf t\u1ec9nh, th\u00e0nh ph\u1ed1 hay th\u1ecb tr\u1ea5n n\u00e0o, s\u1ed1 l\u01b0\u1ee3ng m\u1eabu thay th\u1ebf \u0111\u01b0\u1ee3c l\u1ea5y ng\u1eabu nhi\u00ean, chi\u1ebfm 3% t\u1ed5ng s\u1ed1 m\u1eabu v\u00e0 ph\u1ea3i t\u1eeb 3 m\u1eabu tr\u1edf l\u00ean.<\/p>\n<p>T\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m t\u1ed1i \u0111a \u0111\u01b0\u1ee3c l\u1ea5y l\u00e0 l\u1ef1c k\u00e9o thi\u1ebft k\u1ebf.<\/p>\n<p>S\u1ed1 chu k\u1ef3 t\u1ea3i l\u00e0 1 chu k\u1ef3.<\/p>\n<p>T\u1ea3i tr\u1ecdng ban \u0111\u1ea7u 5,0 kN, b\u01b0\u1edbc t\u0103ng t\u1ea3i 10,0 kN, th\u1eddi gian duy tr\u00ec t\u1ea3i \u1edf m\u1ed7i giai \u0111o\u1ea1n 5,0 ph\u00fat, t\u1ed1c \u0111\u1ed9 gia t\u1ea3i 10,0 kN\/ph\u00fat.<\/p>\n<p>V\u00e0 k\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y d\u01b0\u1edbi d\u1ea1ng \u0111\u01b0\u1eddng cong t\u1ea3i tr\u1ecdng \u2013 \u0111\u1ed9 d\u1ecbch chuy\u1ec3n.<\/p>\n<p>&nbsp;<\/p>\n<p>N\u00f3i c\u00e1ch kh\u00e1c, theo ti\u00eau chu\u1ea9n, \u201cph\u1ea3i k\u00e9o cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn l\u1ef1c k\u00e9o thi\u1ebft k\u1ebf c\u1ee7a v\u1eadt li\u1ec7u gia c\u1ed1 \u0111\u00f3\u201d.<\/p>\n<p>N\u1ebfu Td kh\u00e1c nhau \u1edf m\u1ed7i t\u1ea7ng, th\u00ec t\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m c\u0169ng s\u1ebd kh\u00e1c nhau \u1edf m\u1ed7i t\u1ea7ng.<\/p>\n<p>V\u00ec \u0111i\u1ec1u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee9c t\u0103ng t\u1ea3i tr\u1ecdng ho\u1eb7c gi\u00e1 tr\u1ecb t\u1ed1i \u0111a, n\u00ean c\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh c\u00e0i \u0111\u1eb7t t\u1ea1i t\u1eebng c\u00f4ng tr\u01b0\u1eddng m\u00e0 kh\u00f4ng c\u00f3 v\u1ea5n \u0111\u1ec1 g\u00ec.<\/p>\n<p>Nh\u00e2n ti\u1ec7n, v\u1ec1 c\u00e1ch ghi c\u1ee7a ph\u00eda ch\u1ee7 \u0111\u1ea7u t\u01b0, h\u1ea7u h\u1ebft c\u00e1c n\u01a1i \u0111\u1ec1u n\u00eau \u201ckhi ki\u1ec3m tra nghi\u1ec7m thu \/ t\u1ea3i tr\u1ecdng t\u1ed1i \u0111a theo thi\u1ebft k\u1ebf\u201d trong b\u1ea3n \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt ri\u00eang d\u00e0nh cho c\u00f4ng t\u00e1c l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p, nh\u01b0 m\u1ed9t m\u1ee5c ki\u1ec3m tra theo t\u1eebng giai \u0111o\u1ea1n, v\u00e0,<\/p>\n<p>T\u1ea7n su\u1ea5t ki\u1ec3m tra \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh l\u00e0 1 l\u1ea7n\/d\u1ef1 \u00e1n \u0111\u1ed1i v\u1edbi gi\u00e1m s\u00e1t th\u00f4ng th\u01b0\u1eddng v\u00e0 2 l\u1ea7n\/d\u1ef1 \u00e1n \u0111\u1ed1i v\u1edbi gi\u00e1m s\u00e1t tr\u1ecdng \u0111i\u1ec3m. (V\u1ea5n \u0111\u1ec1 n\u00e0y t\u00f9y thu\u1ed9c v\u00e0o c\u01a1 quan thi c\u00f4ng \u1edf c\u1ea5p qu\u1ed1c gia, t\u1ec9nh, th\u00e0nh ph\u1ed1 v\u00e0 x\u00e3.)<\/p>\n<p>V\u00e2ng, v\u1ec1 c\u01a1 b\u1ea3n, t\u00e0i li\u1ec7u n\u00e0y \u0111\u00e3 n\u00eau r\u00f5 r\u1eb1ng vi\u1ec7c s\u1eafp x\u1ebfp v\u00e0 \u0111\u00e1nh gi\u00e1 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra c\u0169ng nh\u01b0 k\u1ebft qu\u1ea3 ki\u1ec3m tra s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo \u201cC\u1ea9m nang thi\u1ebft k\u1ebf v\u00e0 thi c\u00f4ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p gia c\u1ed1 n\u1ec1n \u0111\u1ea5t\u201d c\u1ee7a Hi\u1ec7p h\u1ed9i K\u1ef9 thu\u1eadt \u0110\u1ecba k\u1ef9 thu\u1eadt.<\/p>\n<p>\u0110\u00e2y l\u00e0 ph\u1ea7n m\u00e0 c\u00e1ch ghi ch\u00e9p c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u00f9y theo t\u1eebng c\u01a1 quan \u0111\u1eb7t h\u00e0ng, n\u00ean tr\u01b0\u1edbc ti\u00ean b\u1ea1n c\u1ea7n \u0111\u1ecdc k\u1ef9 b\u1ea3n quy c\u00e1ch k\u1ef9 thu\u1eadt \u0111\u1eb7c bi\u1ec7t c\u1ee7a \u0111\u01a1n v\u1ecb m\u00ecnh.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-54805\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/06\/2021-10-14-13.34.54.jpg\" alt=\"K\u1ef3 thi c\u01a1 b\u1ea3n: Th\u1ee3 l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p\" width=\"600\" height=\"450\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/06\/2021-10-14-13.34.54.jpg 600w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/06\/2021-10-14-13.34.54-300x225.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<hr \/>\n<h2>C\u00f3 n\u00ean thay \u0111\u1ed5i theo t\u1eebng b\u1eadc hay th\u1ed1ng nh\u1ea5t theo t\u1ea3i tr\u1ecdng ti\u00eau bi\u1ec3u?<\/h2>\n<p>\u0110\u00e2y l\u00e0 ph\u1ea7n k\u1ec3 v\u1ec1 th\u1ef1c t\u1ebf t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n<p>N\u1ebfu tu\u00e2n theo ti\u00eau chu\u1ea9n th\u00ec s\u1ebd t\u00ednh theo Td c\u1ee7a t\u1eebng b\u1eadc.<\/p>\n<p>Nh\u01b0ng khi th\u1ef1c s\u1ef1 qu\u1ea3n l\u00fd t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng, vi\u1ec7c t\u1ea3i tr\u1ecdng c\u1ee9 thay \u0111\u1ed5i li\u00ean t\u1ee5c th\u1ef1c s\u1ef1 r\u1ea5t phi\u1ec1n ph\u1ee9c \u0111\u1ea5y w<\/p>\n<p>M\u1ed7i khi chuy\u1ec3n sang t\u1ea7ng kh\u00e1c, ph\u1ea3i vi\u1ebft l\u1ea1i k\u1ebf ho\u1ea1ch x\u1ebfp h\u00e0ng, \u0111i\u1ec1u ch\u1ec9nh l\u1ea1i v\u1ea1ch chia tr\u00ean k\u00edch v\u00e0 s\u1eed d\u1ee5ng c\u00e1c m\u1eabu b\u00e1o c\u00e1o kh\u00e1c nhau.<\/p>\n<p>H\u01a1n n\u1eefa, \u0111i\u1ec1u m\u00e0 ng\u01b0\u1eddi ta ki\u1ec3m tra trong k\u1ef3 thi tuy\u1ec3n d\u1ee5ng th\u1ee3 l\u1eafp c\u1ed1t th\u00e9p, x\u00e9t cho c\u00f9ng, ch\u00ednh l\u00e0 xem c\u1ed1t th\u00e9p c\u00f3 \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh ch\u1eafc ch\u1eafn hay kh\u00f4ng, c\u00f3 b\u1ecb tu\u1ed9t ra hay kh\u00f4ng, ph\u1ea3i kh\u00f4ng?<\/p>\n<p>V\u00ec v\u1eady, t\u00f4i ngh\u0129 r\u1eb1ng c\u00f3 l\u1ebd kh\u00f4ng c\u1ea7n thi\u1ebft ph\u1ea3i theo d\u00f5i t\u1eebng con s\u1ed1 chi ti\u1ebft \u1edf t\u1eebng c\u1ea5p \u0111\u1ed9 nh\u01b0 v\u1eady.<\/p>\n<p>&nbsp;<\/p>\n<p>H\u01b0\u1edbng t\u1edbi vi\u1ec7c th\u1ed1ng nh\u1ea5t theo gi\u00e1 tr\u1ecb Td l\u1edbn nh\u1ea5t trong \u0111o\u1ea1n \u0111\u00f3.<\/p>\n<p>\u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 t\u1ea5t c\u1ea3 c\u00e1c thanh \u0111\u1ec1u \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u trong ti\u00eau chu\u1ea9n r\u1eb1ng \u201ct\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m t\u1ed1i \u0111a ph\u1ea3i b\u1eb1ng l\u1ef1c k\u00e9o thi\u1ebft k\u1ebf\u201d, do \u0111\u00f3 \u0111\u00e2y l\u00e0 c\u00e1ch ti\u1ebfp c\u1eadn th\u1eadn tr\u1ecdng.<\/p>\n<p>N\u1ebfu gi\u00e1 tr\u1ecb Td trong t\u1eebng b\u1eadc dao \u0111\u1ed9ng t\u1eeb 30 kN \u0111\u1ebfn 50 kN, th\u00ec vi\u1ec7c th\u1ed1ng nh\u1ea5t \u1edf m\u1ee9c 50 kN s\u1ebd \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c v\u1eadt li\u1ec7u gia c\u1ed1 \u0111\u1ec1u \u0111\u01b0\u1ee3c k\u00e9o c\u0103ng \u0111\u1ebfn m\u1ee9c Td tr\u1edf l\u00ean.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-66402\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/07\/f897796c0b2af1fdbb5b9feedb7f3b18.png\" alt=\"T\u1ea3i tr\u1ecdng c\u1ee7a c\u00f4ng vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p\" width=\"600\" height=\"400\" \/><\/p>\n<p>N\u1ebfu l\u00e0 t\u00f4i \u1edf c\u00f4ng tr\u01b0\u1eddng n\u00e0y, t\u00f4i s\u1ebd mu\u1ed1n th\u1ed1ng nh\u1ea5t m\u1ee9c t\u1ea3i tr\u1ecdng t\u1ea7ng 1 l\u00e0 50 kN v\u00e0 t\u1ea7ng 2 l\u00e0 30 kN.<\/p>\n<p>&nbsp;<\/p>\n<p>D\u00f9 sao \u0111i n\u1eefa, \u0111\u00e2y ch\u1ec9 l\u00e0 quan \u0111i\u1ec3m c\u00e1 nh\u00e2n c\u1ee7a t\u00f4i, nh\u01b0ng t\u00f4i cho r\u1eb1ng n\u1ebfu ch\u1ec9 \u0111\u1ec3 ki\u1ec3m tra \u0111\u1ed9 b\u00e1m d\u00ednh th\u00ec kho\u1ea3ng 20 kN l\u00e0 \u0111\u1ee7 r\u1ed3i.<\/p>\n<p>Theo c\u1ea3m nh\u1eadn c\u00e1 nh\u00e2n c\u1ee7a t\u00f4i, vi\u1ec7c c\u1ed1 t\u00ecnh \u00e1p d\u1ee5ng t\u1ea3i tr\u1ecdng thi\u1ebft k\u1ebf l\u00ean c\u00e1c thanh c\u1ed1t th\u00e9p \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh to\u00e0n b\u1ed9, t\u1eeb \u0111\u00f3 t\u1ea1o ra r\u1ee7i ro b\u1ecb tu\u1ed9t ra, l\u00e0 \u0111i\u1ec1u khi\u1ebfn t\u00f4i c\u1ea3m th\u1ea5y \u0111\u00e1ng nghi v\u1ea5n.<\/p>\n<p>V\u00ec b\u1ea3n ch\u1ea5t l\u00e0 c\u1ed1t th\u00e9p n\u00ean n\u00f3 h\u1ea7u nh\u01b0 kh\u00f4ng b\u1ecb gi\u00e3n ra.<\/p>\n<p>Theo t\u00f4i th\u1ea5y, ph\u1ea7n m\u00e0 b\u1ea1n ngh\u0129 l\u00e0 b\u1ecb gi\u00e3n ra c\u00f3 l\u1ebd ch\u1ec9 l\u00e0 do kh\u1edbp n\u1ed1i b\u1ecb l\u1ecfng th\u00f4i (c\u01b0\u1eddi)<\/p>\n<p>Tuy nhi\u00ean, \u0111\u00e2y ch\u1ec9 l\u00e0 quan \u0111i\u1ec3m c\u00e1 nh\u00e2n c\u1ee7a t\u00f4i, n\u00ean t\u00f4i xin \u0111\u1ec3 c\u00e1c k\u1ef9 s\u01b0 t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh.<\/p>\n<p>Vi\u1ec7c gi\u1ea3m t\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m xu\u1ed1ng d\u01b0\u1edbi m\u1ee9c l\u1ef1c k\u00e9o thi\u1ebft k\u1ebf l\u00e0 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi n\u1ed9i dung h\u01b0\u1edbng d\u1eabn.<\/p>\n<p>\u0110\u00e2y l\u00e0 v\u1ea5n \u0111\u1ec1 m\u00e0 n\u1ebfu quy\u1ebft \u0111\u1ecbnh th\u1ef1c hi\u1ec7n th\u00ec ph\u1ea3i th\u00f4ng qua th\u1ea3o lu\u1eadn v\u1edbi ng\u01b0\u1eddi gi\u00e1m s\u00e1t v\u00e0 l\u01b0u l\u1ea1i d\u01b0\u1edbi d\u1ea1ng bi\u00ean b\u1ea3n th\u1ea3o lu\u1eadn.<\/p>\n<p>\u00dd ki\u1ebfn c\u1ee7a t\u00f4i ch\u1ec9 l\u00e0 quan \u0111i\u1ec3m c\u1ee7a m\u1ed9t ng\u01b0\u1eddi th\u1ee3 thi c\u00f4ng, n\u00ean kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec1u c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng nguy\u00ean xi t\u1ea1i c\u00f4ng tr\u01b0\u1eddng \u0111\u00e2u (th\u1ebf th\u00ec sao l\u1ea1i n\u00f3i ra ch\u1ee9!?)<\/p>\n<p>V\u1ea5n \u0111\u1ec1 n\u00e0y ph\u1ee5 thu\u1ed9c ho\u00e0n to\u00e0n v\u00e0o c\u00e1ch suy ngh\u0129 c\u1ee7a c\u00e1c k\u1ef9 s\u01b0, n\u00ean cu\u1ed1i c\u00f9ng s\u1ebd \u0111\u1ec3 c\u00e1c \u0111\u01a1n v\u1ecb t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng t\u1ef1 quy\u1ebft \u0111\u1ecbnh.<\/p>\n<p>\u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 t\u00f9y thu\u1ed9c v\u00e0o t\u00ecnh h\u00ecnh th\u1ef1c t\u1ebf t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-66405\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/07\/4942d2adf061f0c905704950daf61753.jpg\" alt=\"Cu\u1ed9c h\u1ecdp t\u1ea1i ph\u00f2ng tr\u1ef1c c\u00f4ng tr\u01b0\u1eddng tr\u00ean s\u01b0\u1eddn d\u1ed1c\" width=\"600\" height=\"338\" \/><\/p>\n<p>\u0110\u1eb7c bi\u1ec7t l\u00e0 n\u1ebfu c\u1ea3m th\u1ea5y r\u1eb1ng l\u1edbp \u0111\u1ea5t s\u00e9t tr\u00ean n\u00fai \u0111\u00e3 b\u1ecb m\u1ec1m \u0111i th\u00ec \u0111i\u1ec1u n\u00e0y l\u1ea1i c\u00e0ng \u0111\u00fang h\u01a1n.<\/p>\n<p>Th\u1ef1c ra, theo kinh nghi\u1ec7m c\u1ee7a t\u00f4i, ch\u1ec9 c\u00f3 m\u1ed9t l\u1ea7n duy nh\u1ea5t t\u00f4i ph\u1ea3i h\u1ea1 gi\u00e1 trong m\u1ed9t d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng c\u1ee7a T\u1ed5ng c\u00f4ng ty Nh\u00e0 \u1edf.<\/p>\n<hr \/>\n<h2>\u0110\u1ed1i v\u1edbi \u0111ai \u1ed1c \u1edf ph\u1ea7n \u0111\u1ea7u, m\u1ee9c l\u1ef1c k\u00e9o thi\u1ebft k\u1ebf kho\u1ea3ng 50% \u0111\u01b0\u1ee3c coi l\u00e0 ti\u00eau chu\u1ea9n tham kh\u1ea3o<\/h2>\n<p>Ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p l\u00e0 ph\u01b0\u01a1ng ph\u00e1p thi c\u00f4ng kh\u00f4ng \u00e1p d\u1ee5ng l\u1ef1c c\u0103ng (l\u1ef1c d\u1ef1 \u1ee9ng l\u1ef1c) trong qu\u00e1 tr\u00ecnh thi c\u00f4ng, kh\u00e1c v\u1edbi ph\u01b0\u01a1ng ph\u00e1p neo \u0111\u1ea5t.<\/p>\n<p>V\u1eady th\u00ec t\u1ea1i sao l\u1ea1i ph\u1ea3i si\u1ebft ch\u1eb7t \u0111ai \u1ed1c \u1edf ph\u1ea7n \u0111\u1ea7u?<\/p>\n<p>Trong cu\u1ed1n s\u00e1ch c\u00f3 n\u00eau r\u1eb1ng, kh\u00e1c v\u1edbi neo \u0111\u1ea5t, ph\u01b0\u01a1ng ph\u00e1p gia c\u1ed1 \u0111\u1ea5t n\u1ec1n kh\u00f4ng ph\u1ea3i l\u00e0 ph\u01b0\u01a1ng ph\u00e1p nh\u1eb1m \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a s\u01b0\u1eddn d\u1ed1c b\u1eb1ng c\u00e1ch t\u1ea1o ra l\u1ef1c c\u0103ng ban \u0111\u1ea7u, do \u0111\u00f3,<\/p>\n<p>Ng\u01b0\u1eddi ta cho r\u1eb1ng vi\u1ec7c si\u1ebft ch\u1eb7t \u0111ai \u1ed1c kh\u00f4ng nh\u1eb1m m\u1ee5c \u0111\u00edch t\u1ea1o ra l\u1ef1c c\u0103ng.<\/p>\n<p>Tr\u00ean c\u01a1 s\u1edf \u0111\u00f3, trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, ng\u01b0\u1eddi ta th\u01b0\u1eddng l\u1ea5y gi\u00e1 tr\u1ecb kho\u1ea3ng 50% c\u1ee7a l\u1ef1c k\u00e9o thi\u1ebft k\u1ebf l\u00e0m ti\u00eau chu\u1ea9n tham kh\u1ea3o cho vi\u1ec7c ki\u1ec3m so\u00e1t l\u1ef1c si\u1ebft chung, b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u1edd l\u00ea m\u00f4-men xo\u1eafn,<\/p>\n<p>Trong v\u0103n b\u1ea3n c\u00f3 ghi r\u00f5 r\u1eb1ng l\u1ef1c si\u1ebft s\u1ebd \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh sau khi tham kh\u1ea3o \u00fd ki\u1ebfn c\u1ee7a gi\u00e1m s\u00e1t vi\u00ean.<\/p>\n<p>&nbsp;<\/p>\n<p>Gi\u1ea3 s\u1eed \u0111\u00f3 l\u00e0 b\u1eadc c\u00f3 Td = 50 kN, th\u00ec kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ef1c 50 kN lu\u00f4n \u0111\u01b0\u1ee3c t\u00e1c d\u1ee5ng li\u00ean t\u1ee5c l\u00ean ph\u1ea7n \u0111\u1ea7u.<\/p>\n<p>Theo kinh nghi\u1ec7m chung, c\u00f3 nhi\u1ec1u c\u00f4ng tr\u01b0\u1eddng \u0111ang si\u1ebft ch\u1eb7t \u1edf m\u1ee9c kho\u1ea3ng 25 kN, t\u1ee9c l\u00e0 b\u1eb1ng m\u1ed9t n\u1eeda gi\u00e1 tr\u1ecb \u0111\u00f3.<\/p>\n<p>Ngh\u0129 nh\u01b0 v\u1eady th\u00ec, c\u1ea3m nh\u1eadn c\u1ee7a t\u00f4i r\u1eb1ng \u201c\u0111\u1ec3 ki\u1ec3m tra \u0111\u1ed9 b\u00e1m d\u00ednh th\u00ec kho\u1ea3ng 20 kN l\u00e0 \u0111\u1ee7\u201d c\u0169ng kh\u00f4ng ph\u1ea3i l\u00e0 con s\u1ed1 qu\u00e1 xa so v\u1edbi m\u1ee9c gi\u00e1 tr\u1ecb qu\u1ea3n l\u00fd l\u1ef1c si\u1ebft \u0111\u00e2u nh\u1ec9 w<\/p>\n<p>Tuy nhi\u00ean, l\u1ef1c si\u1ebft v\u00e0 t\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m l\u1ea1i ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c nhau.<\/p>\n<p>Vi\u1ec7c si\u1ebft ch\u1eb7t nh\u1eb1m m\u1ee5c \u0111\u00edch k\u1ebft h\u1ee3p v\u1eadt li\u1ec7u gia c\u1ed1 v\u1edbi v\u1eadt li\u1ec7u b\u1ec1 m\u1eb7t, c\u00f2n vi\u1ec7c th\u1eed nghi\u1ec7m nh\u1eb1m m\u1ee5c \u0111\u00edch ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<p>D\u00f9 c\u00f9ng d\u00f9ng \u0111\u01a1n v\u1ecb kN nh\u01b0ng \u00fd ngh\u0129a l\u1ea1i kh\u00e1c nhau, v\u00ec v\u1eady ch\u00fang ta n\u00ean tr\u00e1nh nh\u1ea7m l\u1eabn gi\u1eefa hai kh\u00e1i ni\u1ec7m n\u00e0y.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-48314\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2023\/01\/2023-01-18-10.49.14.jpg\" alt=\"C\u1edd-l\u00ea m\u00f4-men xo\u1eafn\" width=\"600\" height=\"450\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2023\/01\/2023-01-18-10.49.14.jpg 600w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2023\/01\/2023-01-18-10.49.14-300x225.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>D\u00f9 n\u00f3i v\u1eady, nh\u01b0ng vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh sao cho kh\u00f4ng qu\u00e1 l\u1ecfng c\u0169ng kh\u00f4ng h\u1ec1 d\u1ec5 d\u00e0ng; n\u1ebfu k\u00edch th\u01b0\u1edbc thi\u1ebft k\u1ebf nh\u1ecf, th\u00ec khi si\u1ebft ch\u1eb7t \u1edf m\u1ee9c 50% k\u00edch th\u01b0\u1edbc thi\u1ebft k\u1ebf, c\u00f3 th\u1ec3 s\u1ebd v\u1eabn c\u00f2n l\u1ecfng l\u1ebbo \u0111\u1ea5y (c\u01b0\u1eddi).<\/p>\n<p>V\u00ec v\u1eady, cu\u1ed1i c\u00f9ng h\u00e3y d\u00f9ng k\u1eb9p \u0111\u1ec3 k\u1eb9p th\u1eadt ch\u1eb7t!<\/p>\n<p>N\u1ebfu c\u00f3 th\u1ec3, b\u1ea1n n\u00ean d\u00f9ng keo ch\u1ed1ng l\u1ecfng \u1ed1c v\u00e0 si\u1ebft ch\u1eb7t l\u1ea1i nh\u00e9.<\/p>\n<hr \/>\n<h2>Khi l\u1eafp b\u1ed9 n\u1ed1i, \u00fd ngh\u0129a c\u1ee7a t\u1ea3i tr\u1ecdng s\u1ebd nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n<p>\u0110\u00e2y l\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng b\u1ed9 n\u1ed1i.<\/p>\n<p>Theo quy \u0111\u1ecbnh, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p nh\u01b0 khi c\u00f4ng tr\u01b0\u1eddng ch\u1eadt h\u1eb9p ho\u1eb7c v\u1eadt li\u1ec7u gia c\u1ed1 c\u00f3 chi\u1ec1u d\u00e0i l\u1edbn, c\u0169ng c\u00f3 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u1edbp n\u1ed1i \u0111\u1ec3 k\u1ebft n\u1ed1i,<\/p>\n<p>Tuy nhi\u00ean, t\u00e0i li\u1ec7u c\u00f3 ghi r\u00f5 r\u1eb1ng kh\u1edbp n\u1ed1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ea3i c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ea1i v\u1ecb tr\u00ed n\u1ed1i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ho\u1eb7c cao h\u01a1n \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u l\u00f5i.<\/p>\n<p>V\u1ec1 \u0111\u1ed9 b\u1ec1n, \u0111\u00f3 ch\u00ednh l\u00e0 c\u00e1ch ti\u1ebfp c\u1eadn nh\u1eb1m \u0111\u1ea3m b\u1ea3o \u0111i\u1ec1u \u0111\u00f3.<\/p>\n<p>&nbsp;<\/p>\n<p>\u0110\u00e2y l\u00e0 suy ngh\u0129 c\u1ee7a t\u00f4i.<\/p>\n<p>Khi l\u1eafp kh\u1edbp n\u1ed1i v\u00e0o, \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i s\u1ebd l\u1edbn h\u01a1n \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a v\u1eadt li\u1ec7u l\u00f5i.<\/p>\n<p>V\u00ed d\u1ee5, trong l\u1ed7 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh \u03c665mm, s\u1ebd xu\u1ea5t hi\u1ec7n th\u00eam m\u1ed9t m\u1eaft g\u1ed7 to \u1edf gi\u1eefa.<\/p>\n<p>Khi ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m ki\u1ec3m tra trong t\u00ecnh tr\u1ea1ng \u0111\u00f3, ch\u1eafc ch\u1eafn s\u1ebd c\u00f3 nhi\u1ec1u y\u1ebfu t\u1ed1 khi\u1ebfn v\u1eefa b\u1ecb m\u1eafc k\u1eb9t do t\u00e1c \u0111\u1ed9ng c\u01a1 h\u1ecdc h\u01a1n.<\/p>\n<p>N\u1ebfu v\u1eady, c\u00f3 kh\u1ea3 n\u0103ng t\u1ea3i tr\u1ecdng s\u1ebd t\u0103ng l\u00ean theo m\u1ed9t c\u00e1ch kh\u00e1c v\u1edbi h\u00e0nh vi ph\u1ea3n \u00e1nh tr\u1ef1c ti\u1ebfp l\u1ef1c c\u1ea3n ma s\u00e1t b\u1ec1 m\u1eb7t, ph\u1ea3i kh\u00f4ng?<\/p>\n<p>D\u00f9 c\u00f3 \u00fd \u0111\u1ecbnh th\u1eed nghi\u1ec7m v\u1edbi t\u1ea3i tr\u1ecdng theo ti\u00eau chu\u1ea9n Td, nh\u01b0ng t\u00f4i e r\u1eb1ng vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c nh\u1eefng g\u00ec th\u1ef1c s\u1ef1 \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u1eabn c\u00f2n h\u01a1i m\u01a1 h\u1ed3.<\/p>\n<p>\u00c0, mi\u1ec5n l\u00e0 kh\u00f4ng b\u1ecb r\u1edbt ra l\u00e0 \u0111\u01b0\u1ee3c th\u00f4i w<\/p>\n<p>Th\u1ec9nh tho\u1ea3ng c\u0169ng c\u00f3 nh\u1eefng thanh tra hay n\u00f3i nh\u1eefng \u0111i\u1ec1u r\u1eafc r\u1ed1i nh\u01b0 th\u1ebf, n\u00ean t\u00f4i ngh\u0129 c\u0169ng kh\u00f4ng sao n\u1ebfu b\u1ea1n c\u00f3 suy ngh\u0129 nh\u01b0 v\u1eady \u0111\u00e2u, haha.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50902\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2024\/03\/41fe97b74760bfcdfb5818970f0cf7da.jpg\" alt=\"B\u1ed9 gh\u00e9p OSDP\" width=\"600\" height=\"400\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2024\/03\/41fe97b74760bfcdfb5818970f0cf7da.jpg 600w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2024\/03\/41fe97b74760bfcdfb5818970f0cf7da-300x200.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<hr \/>\n<h2>M\u1ed9t s\u1ee3i d\u00e2y c\u00f3 th\u1ec3 k\u00e9o d\u00e0i \u0111\u1ebfn bao nhi\u00eau m\u00e9t?<\/h2>\n<p>Cu\u1ed1i c\u00f9ng l\u00e0 ph\u1ea7n n\u00f3i v\u1ec1 chi\u1ec1u d\u00e0i v\u1eadt li\u1ec7u gia c\u1ed1.<\/p>\n<p>Tr\u01b0\u1edbc h\u1ebft, trong c\u00e1c ti\u00eau chu\u1ea9n, chi\u1ec1u d\u00e0i c\u1ee7a v\u1eadt li\u1ec7u gia c\u1ed1 \u0111\u01b0\u1ee3c d\u1ef1 ki\u1ebfn l\u00e0 bao nhi\u00eau?<\/p>\n<p>C\u00e1c ti\u00eau chu\u1ea9n c\u1ee7a t\u1eebng t\u1ec9nh quy \u0111\u1ecbnh r\u1eb1ng chi\u1ec1u d\u00e0i v\u1eadt li\u1ec7u gia c\u1ed1 th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 2,0\u20135,0 m; v\u1ec1 nguy\u00ean t\u1eafc, ph\u1ea3i \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 s\u00e2u \u00edt nh\u1ea5t 1,0 m so v\u1edbi \u0111\u01b0\u1eddng tr\u01b0\u1ee3t; chi\u1ec1u d\u00e0i v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c l\u00e0m tr\u00f2n \u0111\u1ebfn 50 cm \u0111\u1ec3 thu\u1eadn ti\u1ec7n cho vi\u1ec7c thi c\u00f4ng, v.v.<\/p>\n<p>Theo quy \u0111\u1ecbnh, chi\u1ec1u d\u00e0i t\u1ed1i thi\u1ec3u c\u1ee7a v\u1eadt li\u1ec7u gia c\u1ed1 l\u00e0 2m, chi\u1ec1u d\u00e0i t\u1ed1i \u0111a \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh l\u00e0 5m (d\u1ef1a tr\u00ean kh\u1ea3 n\u0103ng c\u1ee7a c\u00e1c m\u00e1y m\u00f3c thi c\u00f4ng th\u00f4ng th\u01b0\u1eddng); tuy nhi\u00ean, t\u1ea1i t\u1ec9nh Tottori, chi\u1ec1u d\u00e0i t\u1ed1i \u0111a c\u1ee7a v\u1eadt li\u1ec7u gia c\u1ed1 \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh l\u00e0 kho\u1ea3ng 7m.<\/p>\n<p>V\u1ec1 c\u01a1 b\u1ea3n, \u0111\u00e2y c\u0169ng l\u00e0 s\u1ef1 ph\u00e2n bi\u1ec7t gi\u1eefa bu-l\u00f4ng neo \u0111\u00e1 (d\u00f9ng cho \u0111\u1ed9 s\u00e2u \u0111\u1ebfn 7m) v\u00e0 c\u00f4ng ngh\u1ec7 neo \u0111\u1ea5t (d\u00f9ng cho \u0111\u1ed9 s\u00e2u tr\u00ean 7m).<\/p>\n<p>&nbsp;<\/p>\n<p>Ngo\u00e0i ra, trong h\u01b0\u1edbng d\u1eabn c\u00f2n n\u00eau r\u00f5 r\u1eb1ng, n\u1ebfu x\u00e9t \u0111\u1ebfn \u0111i\u1ec1u ki\u1ec7n thi c\u00f4ng v\u00e0 so s\u00e1nh v\u1ec1 m\u1eb7t kinh t\u1ebf v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p thi c\u00f4ng kh\u00e1c, v\u00e0 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 h\u1ee3p l\u00fd, th\u00ec c\u0169ng c\u00f3 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p \u00e1p d\u1ee5ng chi\u1ec1u d\u00e0i v\u01b0\u1ee3t qu\u00e1 5m.<br \/>\n(C\u00e1c lo\u1ea1i bu-l\u00f4ng thu\u1ed9c h\u1ec7 th\u1ed1ng JR c\u00f3 \u0111\u01b0\u1eddng k\u00ednh r\u1ea5t l\u1edbn, th\u1eadm ch\u00ed c\u00f3 nh\u1eefng chi\u1ebfc d\u00e0i h\u01a1n 10m!)<\/p>\n<p>N\u1ebfu so s\u00e1nh c\u00e1c con s\u1ed1 n\u00e0y, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng kho\u1ea3ng 5m l\u00e0 gi\u1edbi h\u1ea1n tr\u00ean ti\u00eau chu\u1ea9n, c\u00f2n 6\u20137m th\u00ec t\u00f9y thu\u1ed9c v\u00e0o \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3.<\/p>\n<p>Theo quan \u0111i\u1ec3m c\u1ee7a t\u00f4i, mi\u1ec5n l\u00e0 kh\u00f4ng c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf nh\u01b0 m\u1eb7t sau c\u00f4ng tr\u00ecnh h\u1eb9p, th\u00ec m\u1ed9t thanh d\u00e0i \u0111\u1ebfn 6m l\u00e0 \u0111\u1ee7 r\u1ed3i.<\/p>\n<p>L\u00fd do l\u00e0 t\u00ednh ch\u1eafc ch\u1eafn trong thi c\u00f4ng.<\/p>\n<p>N\u1ebfu kh\u00f4ng n\u1ed1i th\u00eam \u1edf gi\u1eefa th\u00ec c\u0169ng s\u1ebd kh\u00f4ng x\u1ea3y ra t\u00ecnh tr\u1ea1ng kh\u1edbp n\u1ed1i b\u1ecb l\u1ecfng hay qu\u00ean n\u1ed1i \u0111\u00e2u w<\/p>\n<p>M\u1ed9t \u0111i\u1ec3m n\u1eefa l\u00e0 s\u1ef1 thu\u1eadn ti\u1ec7n trong vi\u1ec7c ki\u1ec3m tra.<\/p>\n<p>B\u1edfi v\u00ec \u0111i\u1ec1u n\u00e0y gi\u00fap vi\u1ec7c ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n<p>N\u1ebfu n\u1ed1i b\u1eb1ng kh\u1edbp n\u1ed1i th\u00ec ch\u1ec9 c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c chi\u1ec1u d\u00e0i \u0111\u1ebfn m\u1ed9t m\u1ee9c nh\u1ea5t \u0111\u1ecbnh m\u00e0 th\u00f4i.<\/p>\n<p>Ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean thi c\u00f4ng b\u1eb1ng m\u1ed9t thanh duy nh\u1ea5t n\u1ebfu c\u00f3 th\u1ec3.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-39145\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2019\/05\/2019-05-25-11.41.35.jpg\" alt=\"Th\u1ee3 l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p\" width=\"600\" height=\"450\" \/><\/p>\n<p>T\u00f4i v\u1eabn nghe n\u00f3i r\u1eb1ng v\u1eabn c\u00f2n nh\u1eefng nh\u00e0 th\u1ea7u c\u1eaft ng\u1eafn c\u1ed1t th\u00e9p, n\u00ean t\u00f4i cho r\u1eb1ng t\u1ed1t nh\u1ea5t l\u00e0 n\u00ean \u0111\u1ec3 l\u1ea1i m\u1ed9t kho\u1ea3ng tr\u1ed1ng \u0111\u1ec3 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1 \u0111\u00f3.<\/p>\n<p>V\u1ea5n \u0111\u1ec1 kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 \u201cmi\u1ec5n l\u00e0 ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c chi\u1ec1u d\u00e0i khoan l\u00e0 \u0111\u01b0\u1ee3c\u201d \u0111\u00e2u.<\/p>\n<p>V\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft, h\u00e0nh vi gian l\u1eadn nh\u01b0 khoan l\u1ed7 \u0111\u1ebfn \u0111\u1ed9 s\u00e2u quy \u0111\u1ecbnh r\u1ed3i ch\u1ec9 l\u1eafp c\u1ed1t th\u00e9p ng\u1eafn h\u01a1n m\u1ee9c \u0111\u00f3 l\u00e0 ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 x\u1ea3y ra.<\/p>\n<p>Th\u1ef1c t\u1ebf l\u00e0 kh\u00f4ng th\u1ec3 n\u00e0o \u0111\u1ec3 \u0111\u1ea1o di\u1ec5n lu\u00f4n \u1edf b\u00ean c\u1ea1nh \u0111\u01b0\u1ee3c.<\/p>\n<p>C\u00f4ng ty thi c\u00f4ng ph\u1ea3i \u0111\u1ea3m b\u1ea3o th\u1ef1c hi\u1ec7n c\u00f4ng tr\u00ecnh m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady tuy\u1ec7t \u0111\u1ed1i.<\/p>\n<p>Tr\u01b0\u1edbc khi b\u00e0n lu\u1eadn \u0111\u1ee7 \u0111i\u1ec1u v\u1ec1 con s\u1ed1 Td, tr\u01b0\u1edbc h\u1ebft c\u1ea7n x\u00e1c \u0111\u1ecbnh xem li\u1ec7u s\u1ea3n ph\u1ea9m c\u00f3 \u0111\u00fang nh\u01b0 thi\u1ebft k\u1ebf hay kh\u00f4ng.<\/p>\n<p>\u0110\u00f3 m\u1edbi l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t ph\u1ea3i kh\u00f4ng nh\u1ec9? www<\/p>\n<p>&nbsp;<\/p>\n<p>Vi\u1ec7c x\u00e1c \u0111\u1ecbnh m\u1ee9c t\u1ea3i tr\u1ecdng cho th\u1eed nghi\u1ec7m ki\u1ec3m tra l\u00e0 v\u1ea5n \u0111\u1ec1 m\u00e0 c\u00e1c k\u1ef9 s\u01b0 c\u00f3 nh\u1eefng quan \u0111i\u1ec3m kh\u00e1c nhau.<\/p>\n<p>T\u00f4i cho r\u1eb1ng, thay v\u00ec t\u1ea1o ra l\u1ef1c c\u0103ng qu\u00e1 m\u1ee9c khi\u1ebfn v\u1eadt li\u1ec7u gia c\u1ed1 c\u00f2n nguy\u00ean v\u1eb9n b\u1ecb h\u01b0 h\u1ea1i, th\u00ec vi\u1ec7c ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o thanh gia c\u1ed1 kh\u00f4ng b\u1ecb tu\u1ed9t ra v\u00e0 x\u1eed l\u00fd ph\u1ea7n \u0111\u1ea7u thanh m\u1ed9t c\u00e1ch c\u1ea9n th\u1eadn s\u1ebd c\u00f3 l\u1ee3i h\u01a1n cho k\u1ebft c\u1ea5u.<\/p>\n<p>Tr\u00ean c\u01a1 s\u1edf \u0111\u00f3, n\u1ebfu c\u1ea7n x\u00e1c nh\u1eadn c\u00e1c tr\u01b0\u1eddng h\u1ee3p kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n, nh\u1ea5t \u0111\u1ecbnh ph\u1ea3i ti\u1ebfn h\u00e0nh th\u1ea3o lu\u1eadn.<\/p>\n<p>Ch\u1ec9 c\u1ea7n l\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u \u0111\u00f3, ch\u1eafc ch\u1eafn s\u1ebd c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c qu\u1ea3n l\u00fd ph\u00f9 h\u1ee3p v\u1edbi th\u1ef1c t\u1ebf t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n<p>T\u1ea1i n\u01a1i l\u00e0m vi\u1ec7c c\u1ee7a c\u00e1c b\u1ea1n th\u00ec m\u1ecdi ng\u01b0\u1eddi \u0111ang l\u00e0m nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n<p>&nbsp;<\/p>\n<p>H\u1eb9n g\u1eb7p l\u1ea1i nh\u00e9.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"kaVQAQbEyN\"><p><a href=\"https:\/\/norimen.net\/vi\/rebar-insertion-one-piece-ideal\/\">\u0110\u1ed1i v\u1edbi c\u00f4ng vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p, l\u00fd t\u01b0\u1edfng nh\u1ea5t l\u00e0 s\u1eed d\u1ee5ng c\u00e1c thanh \u0111\u01a1n l\u1ebb c\u00e0ng nhi\u1ec1u c\u00e0ng t\u1ed1t | Ch\u1ea5t l\u01b0\u1ee3ng<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201cVi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p n\u00ean s\u1eed d\u1ee5ng c\u00e1c thanh \u0111\u01a1n l\u1ebb c\u00e0ng nhi\u1ec1u c\u00e0ng t\u1ed1t | Ch\u1ea5t l\u01b0\u1ee3ng\u201d \u2014 L\u1edbp h\u1ecdc qu\u1ea3n l\u00fd m\u1eb7t d\u1ed1c c\u1ee7a Shin-Ent\" src=\"https:\/\/norimen.net\/rebar-insertion-one-piece-ideal\/embed\/#?secret=m047Yj0dnp#?secret=kaVQAQbEyN\" data-secret=\"kaVQAQbEyN\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>","protected":false},"excerpt":{"rendered":"<p>Xin ch\u00e0o m\u1ecdi ng\u01b0\u1eddi. T\u00f4i l\u00e0 Enta. M\u00f9a h\u00e8 \u0111ang v\u00e0o cao \u0111i\u1ec3m n\u00ean c\u00f4ng tr\u01b0\u1eddng n\u00f3ng nh\u01b0 l\u00f2 l\u1eeda. Tr\u00ean gi\u00e0n gi\u00e1o, do c\u00f3 c\u1ea3 \u00e1nh n\u1eafng ph\u1ea3n chi\u1ebfu t\u1eeb m\u1eb7t \u0111\u1ea5t n\u00ean tr\u1eddi n\u00f3ng kh\u1ee7ng khi\u1ebfp. H\u00f4m n\u1ecd, ngay t\u1eeb s\u00e1ng s\u1edbm, khi ph\u1ea7n t\u01b0\u1eddng \u0111\u00e1 v\u1eeba \u0111\u01b0\u1ee3c x\u00e2y xong, t\u00f4i \u0111\u00e3 \u01b0\u1edbt \u0111\u1eabm m\u1ed3 h\u00f4i r\u1ed3i (c\u01b0\u1eddi). Ch\u01b0a k\u1ec3 \u0111\u1ebfn l\u00fac c\u00f4ng vi\u1ec7c m\u1edbi ch\u1ec9 b\u1eaft \u0111\u1ea7u th\u00ec m\u1ed3 h\u00f4i \u0111\u00e3 ch\u1ea3y r\u00f2ng r\u00f2ng (c\u01b0\u1eddi l\u1edbn). Th\u00f4i, quay l\u1ea1i ch\u1ee7 \u0111\u1ec1 ch\u00ednh. L\u1ea7n n\u00e0y l\u00e0 v\u1ec1 c\u1ed1t th\u00e9p\u2026<\/p>","protected":false},"author":2,"featured_media":66406,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[30],"tags":[116,271,5520,14461],"class_list":["post-66401","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lock-bolt","tag-116","tag-271","tag-5520","tag-14461"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ 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