{"id":55745,"date":"2025-09-18T23:00:10","date_gmt":"2025-09-18T14:00:10","guid":{"rendered":"https:\/\/norimen.net\/wordpress\/%e6%b3%95%e9%9d%a2%e5%b1%8b%e3%81%af%e7%9f%a5%e3%81%a3%e3%81%a6%e3%81%84%e3%81%a6%e6%ac%b2%e3%81%97%e3%81%84%e3%80%81%e7%8f%be%e5%a0%b4%e3%81%a7%e3%82%88%e3%81%8f%e4%bd%bf%e3%81%86%e7%b2%98%e7%9d%80\/"},"modified":"2026-05-16T16:11:10","modified_gmt":"2026-05-16T07:11:10","slug":"koheyon-phi-1","status":"publish","type":"post","link":"https:\/\/norimen.net\/tl\/cohesion-phi-1\/","title":{"rendered":"Ang Dapat Malaman ng mga Inhinyero ng Daluyong: Isang Talakayan sa Koheisyon 'c' at Angulo ng Panloob na Friksiyon '\u03c6'\u2014Karaniwang Ginagamit sa Site (Bahagi 1)"},"content":{"rendered":"<p>Kamusta kayong lahat.<\/p>\n<p>Ito si Enta.<\/p>\n<p>Tulad ng nabanggit ko noong isang araw, nagulo nang todo ang listahan ng mga kontak sa cellphone ko, kaya hindi ko na matandaan ang numero ng karamihan sa mga tao, lol<\/p>\n<p>Medyo nakakaabala ito, pero pahalagahan ko kung maaari kang magpadala sa akin ng text message o direktang tumawag sa akin.<\/p>\n<p>Maraming salamat nang maaga.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-55496\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/09\/2112213f6498f3799b04c1f6cf1a489c-2.jpg\" alt=\"Nasirang cellphone\" width=\"600\" height=\"400\" \/><\/p>\n<hr \/>\n<p>Ngunit hindi iyon ang punto.<\/p>\n<p>&nbsp;<\/p>\n<p>Madalas nating mga inhinyero ng dalisdis ang gumagamit ng mga terminong 'koheisyon c' at 'angulo ng panloob na alitan \u03c6', hindi ba?<\/p>\n<p>Ito ay isang termino na madalas lumilitaw sa mga kalkulasyon ng disenyo, at isa na madalas lumabas kapag nakikipag-usap sa mga taga-disenyo.<\/p>\n<p>Sa tingin ko hindi mo talaga iyon naiintindihan, di ba? lol (Pero sa palagay ko naiintindihan naman ng matandang lalaki iyon nang kaunti lang.)<\/p>\n<p>Pero dahil alam ko 'yan, medyo mayabang nga ako, lol.<\/p>\n<p>&nbsp;<\/p>\n<p>Sa post na ito, naisip kong magbigay ng maikling paliwanag tungkol dito.<\/p>\n<p>Gayunpaman, bago natin gawin iyon, kailangan mong magkaroon ng kaunting pag-unawa tungkol sa lupa, kaya sisimulan ko ito sa isang maikling paliwanag tungkol dito.<\/p>\n<p>Mapupunta ako sa isang maliit na gulo kung hihingin mo sa akin ang 'karagdagang detalye', kaya bigyan mo na lang ako ng mabilis na buod, lol.<\/p>\n<h2>Ang tibay ng lupa ay<\/h2>\n<p>Ang 'luwad' na hinaharap namin sa site ay binubuo ng di-mabilang na mga partikulo ng lupa, hangin, at tubig. (Sa tingin ko ay nasulat ko na ito dati.)<\/p>\n<p>Para magbigay sa iyo ng ideya, ito ay isang estado kung saan nakapasok ang hangin at tubig sa mga puwang sa pagitan ng mga partikulo ng lupa.<\/p>\n<figure id=\"attachment_7621\" aria-describedby=\"caption-attachment-7621\" style=\"width: 732px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7621\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/07\/unsat-image.png\" alt=\"Pintas ng lupa\" width=\"732\" height=\"353\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/07\/unsat-image.png 732w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/07\/unsat-image-300x145.png 300w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/07\/unsat-image-600x289.png 600w\" sizes=\"auto, (max-width: 732px) 100vw, 732px\" \/><figcaption id=\"caption-attachment-7621\" class=\"wp-caption-text\">Gradwadong Paaralan ng Inhinyeriya, Nagoya Institute of Technology<br \/>http:\/\/zhang.web.nitech.ac.jp\/research.html<\/figcaption><\/figure>\n<p>Gayunpaman, hindi matatag na nakatali sa isa't isa ang mga partikulo ng lupa; magkakabit-kabit at magkakatulong lamang ang mga ito, kaya kulang sa katatagan ang estruktura.<\/p>\n<p>Kapag hinila mo ang lupa, madali itong mabulok.<\/p>\n<p>Halos zero ang tensile strength ng lupa.<\/p>\n<p>Sa kabilang banda, kaya nitong suportahan ang isang tiyak na dami ng bigat kung ilalagay mo rito ang mga bagay.<\/p>\n<p>Ibig sabihin nito ay kayang tiisin ang compression. Kaugnay ito ng kapasidad ng lupa na tinalakay kanina.<\/p>\n<h2 data-start=\"274\" data-end=\"382\">Kapag nagbagsak ang lupa<\/h2>\n<p>Kapag ang lupa ay pinagsiksik gamit ang isang load-bearing plate, sa halip na ang mga partikulo mismo ang mabasag,<\/p>\n<p>Ang lupa ay gumagalaw at gumuho habang ito ay dumudulas nang pahilis.<\/p>\n<p>Ito ang pinag-uusapang 'shear failure'.<\/p>\n<p>Kapag isinasaalang-alang ang katatagan ng dalisdis sa site, napakahalaga na maunawaan ang konsepto ng 'shear failure'.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8128\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/09\/4cb7830db6ce23fb95066c6b642bf220.jpg\" alt=\"Plakang nagpapasan ng bigat; Kayang pasanin ng lupa\" width=\"600\" height=\"400\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/09\/4cb7830db6ce23fb95066c6b642bf220.jpg 600w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/09\/4cb7830db6ce23fb95066c6b642bf220-300x200.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>Ang ilalim ng pressure plate ay lumobo dahil sa pagkabigo sa pag-apay.<\/p>\n<h2>Pagsusuri ng tibay ng lupa<\/h2>\n<p>Ang uniaxial at triaxial na pagsubok sa kompresyon ay mga karaniwang pagsusuri na ginagamit upang imbestigahan ang pag-uugali ng pagkabigo sa pag-apay. Madalas silang gamitin sa larangan para sa mga pagsusuri tulad ng pagpapabuti ng lupa na nakabatay sa kolum.<\/p>\n<p>Palagi nating ginagamit ang 'standard compressive strength' sa ating on-site na pagsusuri, hindi ba? Ito ay dahil napakaraming kongkretong estruktura.<\/p>\n<p>&nbsp;<\/p>\n<p>Gayunpaman, sa kaso ng lupa, ang kinakainteresahan natin ay ang lakas kung saan nagaganap ang pagkabigo sa pag-apay\u2014ito ang tinatawag na shear strength.<\/p>\n<p>Ibig sabihin,<span style=\"font-size: 130%;\"><strong>Ang shear strength ang tunay na lakas ng lupa.<\/strong><\/span>Iyon, kung gayon, ang sitwasyon.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-55500\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/09\/472990c29690db6929350909ce2e6afc-1.png\" alt=\"Pagkabigo sa pag-igpas\" width=\"600\" height=\"400\" \/><\/p>\n<p>Sabihin nating may bundok na ganito.<\/p>\n<p>Kapag gumuguho ang bundok na ito, ganito ang itsura nito sa larawan sa ibaba. (Pamilyar na tanawin ito, hindi ba?)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-55504\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/09\/fd4ad19cf4c14613407c7fe8060f7506-1.png\" alt=\"Pagkabigo sa pag-igpas\" width=\"600\" height=\"400\" \/><\/p>\n<p>Karaniwang tinatawag na 'mga gumagalaw na masa ng lupa' at 'mga nakapirming masa ng lupa'<\/p>\n<p>Kaya kung mataas ang shear strength, hindi ito madadulas. Iyan ang ideya, hindi ba? lol<\/p>\n<p>&nbsp;<\/p>\n<p>Puting linya: lakas ng paghiwa<\/p>\n<p>Linyang pula: linyang madulas<\/p>\n<p>Itim na linya: tensyon sa paghiwa<\/p>\n<p>&nbsp;<\/p>\n<p>Ang mga sumusunod na pagsusuri ay ginagamit upang sukatin ang puwersang ito.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-55508\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/09\/3e8625a863a4a842ff1f70fcf18071f4-1.png\" alt=\"Listaan ng mga Pagsusuri sa Gilid\" width=\"600\" height=\"400\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Iyon lang muna.<\/p>\n<p>Sa susunod na bahagi, titingnan natin nang mas malapitan ang pagsusulit.<\/p>\n<p>&nbsp;<\/p>\n<p>Magkita tayo mamaya.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Kamusta kayong lahat. Ako si Enta. Tulad ng nabanggit ko noong isang araw, nagulo nang todo ang mga kontak sa cellphone ko, kaya nawala ang karamihan sa mga numero ninyo lol. Medyo nakakainis lang, pero pakipadala naman ng text o tawagan niyo ako nang direkta. Salamat sa pag-unawa. Pero gayunpaman\u2026 Tayo\u2026<\/p>","protected":false},"author":2,"featured_media":55746,"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":[34,38],"tags":[],"class_list":["post-55745","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-slope-work","category-construction-management"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ 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