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Effect of loading sequence on lateral soil-pile interaction due to excavation
Computers and Geotechnics ( IF 5.3 ) Pub Date : 2021-04-03 , DOI: 10.1016/j.compgeo.2021.104134
Hongjiang Li , Songyu Liu , Xin Yan , Wenbo Gu , Liyuan Tong

P-y curve representing lateral soil-pile interaction mechanism is a well-adopted approach to analyze laterally loaded piles. To date, there is still a lack of clear understanding of the lateral pile performance under active and passive composite loadings based on the p-y method. This paper presents a series of p-y oriented modellings on the effect of loading sequences on soil-pile interactions due to a nearby excavation. The loading sequences were divided into firstly applying active loading on pile head and then passive loading caused by adjacent excavation (i.e. active–passive loading sequence) and firstly excavation-induced passive loading and then applying active loading on pile head (i.e. passive-active loading sequence). In this study, the rules of the p-y curve evolution due to different loading sequences were obtained, and the effect of loading sequences on the lateral soil-pile interaction due to excavations was analyzed. Finally, enlightenment based on the mechanism of soil-pile interaction was discussed to guide the design of pile foundations subjected to excavations.



中文翻译:

开挖荷载顺序对土-桩侧向相互作用的影响

代表横向土-桩相互作用机制的P - y曲线是分析横向受力桩的一种常用方法。迄今为止,仍然缺乏基于p - y方法的主动和被动复合荷载作用下侧向桩性能的清晰认识。本文提出了一系列p - y加载顺序对附近开挖引起的土-桩相互作用的影响的定向建模。荷载顺序分为:首先在桩头上施加主动荷载,然后是相邻开挖引起的被动荷载(即主动-被动荷载顺序),首先是挖掘诱发的被动荷载,然后在桩头上施加主动荷载(即被动-主动荷载)。顺序)。在这项研究中,规则p - ý得到曲线演化由于不同的加载序列,并分析在外侧桩土相互作用由于挖掘装载序列的效果。最后,探讨了基于土-桩相互作用机理的启示,对开挖桩基础的设计提供了指导。

更新日期:2021-04-04
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