岩土工程学报2024，Vol.46Issue(z2)：119-123,5.DOI:10.11779/CJGE2024S20039
压入式沉井与反力桩对地表沉降的耦合影响研究
Coupling effects of pressed caisson and uplift piles on surface settlement
摘要
Abstract
Constructing underground railway stations using the pressed continuous caisson group is a new type of prefabricated assembly construction mode.However,compared to the traditional open-pit excavation method of station construction,there is currently a lack of research on the environmental impact of the caisson pushing process.Therefore,taking the actual projects as a background,this study conducted numerical simulations and combined existing measured data to fit subsidence profile curves.The influences of the presence or absence of the reactive piles outside the caissons on the surface settlement profile are investigated.Further investigations are done on the regulation effects of pile spacing on the surface settlement.Based on the principle of the equivalent anti-pulling bearing capacity,the influences of pile spacing and pile diameter on the settlement of the surrounding soil are also explored.Consequently,a modified normalization curve for the settlement profile of the soil outside and between piles is formed,and it may provide reference support for the implementation of the underground stations with pressed continuous caisson group in densely populated urban centers.关键词
压入式沉井/地表沉降/反力桩/数值模拟Key words
pressed caisson/surface settlement/uplift pile/numerical simulation分类
建筑与水利引用本文复制引用
张中杰,王啸翔,俞剑,黄茂松,王浩然..压入式沉井与反力桩对地表沉降的耦合影响研究[J].岩土工程学报,2024,46(z2):119-123,5.基金项目
上海市自然科学基金项目(23ZR1468500) （23ZR1468500）
