Experimental and theoretical research on large-diameter rock-socketed pile embedded depth

• Autorzy: Li Yanfeng , Zhao Jihe , Xiong Ying , Wang Qinghe

Identyfikatory

DOI

10.24425/ace.2021.137184

• Języki publikacji: EN

Abstrakty

EN

A theoretical formula for large-diameter rock-socket depth is developed to support pail embedding in a large bridge pile foundation project. There is a horizontal additional stress concentration at the place where the soil around the rock-socketed pile meets the soil layer under the horizontal load. When the rock-socketed tip stress and bending moment of the pile are relatively small, the pile shows favourable embedment effect and the pile foundation can be considered safe. The function curve of soil resistance around the pile under the action of horizontal force was obtained by finite element analysis. The force characteristics reveal the depth of the largediameter rock-socketed pile under the horizontal load. As the rock-socketed pile rotates under the action of horizontal force, the rock mass resistance around the pile changes according to the cosine. The distribution of pileside soil resistance is proportional to the displacement and distributed according to the sine. A comprehensive correction coefficient of pile shaft resistance β is introduced to deduce the theoretical formula of the depth hr of the large-diameter rock-socketed pile embedded in the bedrock. It is verified through both experiments and numerical analysis.

Słowa kluczowe

EN

horizontal load; loading test; finite element model; load transfer; ultimate bearing capacity; rock socket; depth; foundation pile; large diameter pile

PL

badanie obciążeniowe; obciążenie poziome; model elementów skończonych; przenoszenie obciążenia; nośność graniczna; głębokość; gniazdo skalne; pal fundamentowy; pal wielkośrednicowy

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2021
• Tom: Vol. 67, nr 2
• Strony: 537--550
• Opis fizyczny: Bibliogr. 22 poz., il., tab.

Twórcy

autor

Li Yanfeng

• School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0003-2153-7934

autor

Zhao Jihe

• School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0001-7245-4069

autor

Xiong Ying

• School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0001-9720-7048

autor

Wang Qinghe

• School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0002-1530-4555

Bibliografia

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