{"id":52407,"date":"2024-09-10T08:00:22","date_gmt":"2024-09-09T23:00:22","guid":{"rendered":"https:\/\/norimen.net\/wordpress\/?p=52407"},"modified":"2026-05-17T06:44:10","modified_gmt":"2026-05-16T21:44:10","slug":"tinh-toan-chieu-dai-xi-mang-phun-khung","status":"publish","type":"post","link":"https:\/\/norimen.net\/vi\/frame-spray-cement-length-calc\/","title":{"rendered":"Ph\u01b0\u01a1ng ph\u00e1p t\u00ednh chi\u1ec1u d\u00e0i thi c\u00f4ng d\u1ef1a tr\u00ean l\u01b0\u1ee3ng xi m\u0103ng s\u1eed d\u1ee5ng trong c\u00f4ng t\u00e1c phun b\u00ea t\u00f4ng trong khu\u00f4n"},"content":{"rendered":"

Xin ch\u00e0o m\u1ecdi ng\u01b0\u1eddi.<\/p>\n

\u0110\u00e2y l\u00e0 Enta.<\/p>\n

L\u1ea7n n\u00e0y l\u00e0 vi\u1ec7c t\u00ednh to\u00e1n kh\u1ed1i l\u01b0\u1ee3ng cho c\u00f4ng tr\u00ecnh khung th\u00e9p.<\/p>\n

H\u00f4m n\u1ecd t\u00f4i ch\u1ee3t ngh\u0129, li\u1ec7u c\u00f3 n\u00ean vi\u1ebft tr\u01b0\u1edbc v\u1ec1 c\u00e1ch t\u00ednh l\u01b0\u1ee3ng xi m\u0103ng c\u01a1 b\u1ea3n kh\u00f4ng nh\u1ec9?<\/p>\n

V\u1edbi suy ngh\u0129 \u0111\u00f3, l\u1ea7n n\u00e0y t\u00f4i s\u1ebd th\u1eed tr\u00ecnh b\u00e0y c\u00e1ch t\u00ednh to\u00e1n v\u1eadt li\u1ec7u trong k\u1ebft c\u1ea5u khung th\u00e9p c\u01a1 b\u1ea3n.<\/p>\n

\"K\u1ef9<\/p>\n

Tr\u01b0\u1edbc h\u1ebft, nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n<\/p>\n\n\n\n\n
K\u00edch th\u01b0\u1edbc m\u1eb7t c\u1eaft khung ph\u00e1p l\u00fd (mm)<\/td>\nChi\u1ec1u d\u00e0i thi c\u00f4ng (m)<\/td>\nL\u01b0\u1ee3ng xi m\u0103ng tr\u00ean 1m\u00b3 (kg)<\/td>\nL\u01b0\u1ee3ng xi m\u0103ng trong m\u1ed7i bao (kg)<\/td>\nS\u1ed1 l\u01b0\u1ee3ng t\u00fai (t\u00fai)<\/td>\n<\/tr>\n
300<\/td>\n1000<\/td>\n420<\/td>\n25<\/td>\n1512<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Tr\u01b0\u1edbc m\u1eaft, ch\u00fang ta s\u1ebd t\u00ednh to\u00e1n d\u1ef1a tr\u00ean khung ph\u00e1p l\u00fd \u25a1300.<\/p>\n

Thi c\u00f4ng \u0111o\u1ea1n \u0111\u00f3 d\u00e0i 1.000 m<\/p>\n

Chuy\u1ec3n \u0111\u01a1n v\u1ecb \"khung ph\u00e1p l\u00fd 300\" sang \u0111\u01a1n v\u1ecb m\u00e9t.<\/p>\n

V\u1eady l\u00e0 0,3 ph\u1ea3i kh\u00f4ng?<\/p>\n

 <\/p>\n

V\u00ec v\u1eady, tr\u01b0\u1edbc ti\u00ean ch\u00fang ta s\u1ebd t\u00ednh th\u1ec3 t\u00edch m\u00b3 c\u1ee7a khung ph\u00e1p l\u00fd.<\/p>\n

0,3 \u00d7 0,3 (di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang khung) \u00d7 1.000 m (chi\u1ec1u d\u00e0i) = 90 m\u00b3<\/p>\n

 <\/p>\n

L\u1ea5y th\u1ec3 t\u00edch 90 m\u00b3 n\u00e0y nh\u00e2n v\u1edbi l\u01b0\u1ee3ng xi m\u0103ng tr\u00ean m\u1ed7i m\u00b3.<\/p>\n

90 m\u00b3 \u00d7 420 kg = 37.800 kg<\/p>\n

V\u1eady l\u00e0 \u0111\u00e3 t\u00ednh \u0111\u01b0\u1ee3c t\u1ed5ng l\u01b0\u1ee3ng xi m\u0103ng r\u1ed3i.<\/p>\n

N\u1ebfu chia con s\u1ed1 n\u00e0y cho l\u01b0\u1ee3ng xi m\u0103ng trong m\u1ed7i bao, ta s\u1ebd t\u00ednh \u0111\u01b0\u1ee3c kh\u1ed1i l\u01b0\u1ee3ng thi\u1ebft k\u1ebf c\u1ea7n s\u1eed d\u1ee5ng t\u1ea1i c\u00f4ng tr\u01b0\u1eddng.<\/p>\n

37.800 kg \u00f7 25 kg = 1.512 bao<\/p>\n

\"Th\u1ee3<\/p>\n

Tuy nhi\u00ean, \u1edf nh\u1eefng n\u01a1i \u0111\u1ecba h\u00ecnh g\u1ed3 gh\u1ec1 ho\u1eb7c ch\u1ea5t l\u01b0\u1ee3ng c\u00e1t k\u00e9m, t\u1ef7 l\u1ec7 hao h\u1ee5t d\u1ef1 ki\u1ebfn s\u1ebd v\u00e0o kho\u1ea3ng 20% \u0111\u1ebfn 40%.<\/p>\n

Theo c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u1eeba n\u00eau: 1.512 kg \u00d7 1,2 (t\u0103ng th\u00eam) = 1.815 bao<\/p>\n

H\u00e3y \u0111i\u1ec1u ch\u1ec9nh cho ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n

 <\/p>\n

\u0110\u00f3 l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh ng\u01b0\u1ee3c<\/p>\n

Gi\u1ea3 s\u1eed r\u1eb1ng t\u1ea1i c\u00f4ng tr\u01b0\u1eddng \u0111\u00e3 thi c\u00f4ng theo ti\u00eau chu\u1ea9n 100BT th\u00ec<\/p>\n

1 BT = 50 kg (2 bao)<\/p>\n

\u0110i\u1ec1u m\u00e0 ch\u00fang ta bi\u1ebft l\u00e0,<\/p>\n

L\u01b0\u1ee3ng xi m\u0103ng s\u1eed d\u1ee5ng: 50kg \u00d7 100 BT = 5.000kg<\/p>\n

K\u00edch th\u01b0\u1edbc khung ph\u00e1p l\u00fd: 300 mm (0,3 m)<\/p>\n

L\u01b0\u1ee3ng xi m\u0103ng tr\u00ean 1m\u00b3: 420kg<\/p>\n

5.000 kg (l\u01b0\u1ee3ng xi m\u0103ng \u0111\u00e3 s\u1eed d\u1ee5ng) \u00f7 420 (l\u01b0\u1ee3ng xi m\u0103ng tr\u00ean 1 m\u00b3) \u00f7 0,3 (chi\u1ec1u d\u1ecdc v\u00e1ch ch\u1eafn) \u00f7 0,3 (chi\u1ec1u ngang v\u00e1ch ch\u1eafn) = 132,275 m (chi\u1ec1u d\u00e0i v\u00e1ch ch\u1eafn)<\/strong><\/span><\/p>\n

S\u1ebd nh\u01b0 v\u1eady.<\/p>\n

Nh\u01b0 t\u00f4i \u0111\u00e3 vi\u1ebft c\u00e1ch \u0111\u00e2y v\u00e0i ng\u00e0y, n\u1ebfu ti\u1ebfn \u0111\u1ed9 th\u1ef1c t\u1ebf ch\u1eadm h\u01a1n so v\u1edbi t\u00ednh to\u00e1n, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 m\u1ee9c t\u1ed5n th\u1ea5t d\u1ef1 ki\u1ebfn s\u1ebd cao h\u01a1n.<\/p>\n

 <\/p>\n

V\u00ed d\u1ee5: C\u00f4ng tr\u00ecnh khung phun b\u00ea t\u00f4ng v\u1edbi \u25a1300 cho 1.000m<\/p>\n

Gi\u00e1 th\u1ecb tr\u01b0\u1eddng kho\u1ea3ng 20.000 y\u00ean\/m<\/p>\n

1.000 m \u00d7 20.000 y\u00ean\/m = 20.000.000 y\u00ean, t\u1ee9c l\u00e0 chi ph\u00ed thi c\u00f4ng l\u00e0 nh\u01b0 v\u1eady (ch\u1ec9 t\u00ednh ri\u00eang ph\u1ea7n thi c\u00f4ng tr\u1ef1c ti\u1ebfp)<\/p>\n

N\u1ebfu thi c\u00f4ng \u0111\u01b0\u1ee3c 132m, s\u1ea3n l\u01b0\u1ee3ng trong ng\u00e0y \u0111\u00f3 s\u1ebd l\u00e0 132m \u00d7 20.000 y\u00ean\/m = 2.640.000 y\u00ean<\/p>\n

Nh\u01b0 v\u1eady.<\/p>\n

S\u1ed1 ti\u1ec1n c\u00f2n l\u1ea1i sau khi tr\u1eeb chi ph\u00ed nh\u00e2n c\u00f4ng v\u00e0 chi ph\u00ed nguy\u00ean v\u1eadt li\u1ec7u s\u1ebd l\u00e0 l\u1ee3i nhu\u1eadn.<\/p>\n

Khi thi c\u00f4ng m\u00e0 lu\u00f4n ch\u00fa \u00fd \u0111\u1ebfn chi ph\u00ed, ta s\u1ebd d\u1ea7n d\u1ea7n hi\u1ec3u \u0111\u01b0\u1ee3c nhi\u1ec1u \u0111i\u1ec1u.<\/p>\n

 <\/p>\n

H\u1eb9n g\u1eb7p l\u1ea1i nh\u00e9.<\/p>\n

T\u00ednh to\u00e1n v\u1eadt li\u1ec7u cho khung c\u1ed1t th\u00e9p (Ph\u1ea7n 3) | Ph\u1ea7n c\u1ed1t th\u00e9p d\u1ea7m ngang khung c\u1ed1t th\u00e9p<\/a><\/p><\/blockquote>\n