文献类型：期刊文献

中文题名：地层参数对软土深基坑变形的敏感性分析

英文题名：Sensitivity Analysis of Stratum Parameters to Soft Soil Deep Foundation Pit Deformation

作者：王晨[1];黄曼[1,2];马成荣[1]

机构：[1]绍兴文理学院岩土工程系,浙江绍兴312000;[2]同济大学地下建筑与工程系,上海200092

年份：2019

卷号：0

期号：10

起止页码：171

中文期刊名：科技通报

外文期刊名：Bulletin of Science and Technology

收录：CSTPCD

基金：浙江省自然科学基金(No.LY18D020003);国家自然科学基金(No.41572299;No.41427802;No.41302257;No.41472248)

语种：中文

中文关键词：软土深基坑;数值模拟;地层参数;敏感性分析

外文关键词：soft soil foundation pit;numerical simulation;formation parameters;sensitivity analysis

中文摘要：珠三角地区的软土具有含水量大、压缩性高、承载力低等特性,对基坑工程的设计和施工都提出了更高的要求,深基坑支护设计和施工面临诸多挑战。因此,本文以珠三角公路隧道深基坑工程为背景,采用岩土有限元分析软件MIDAS/GTS对该工程的开挖过程进行模拟,分析地层参数对软土深基坑变形的敏感度。研究结果表明:地层的弹性模量变化对基坑变形最为敏感,其次为内摩擦角,粘聚力的敏感度最低,数值计算结果为深基坑支护设计和施工提供了指导性建议,同时还为类似工程的敏感性分析问题提供了借鉴方法。

外文摘要：The soft soil in the Pearl River Delta area has the features of high water content,high compressibility and low carrying capacity,etc.,which has put forward more stricter requirements for the design and construction of foundation pit project.There are many challenges in the design and construction of deep foundation pit engineering.Therefore,this paper,taking foundation pit excavation in the section of highway tunnel,analyzed the present situation during excavation of foundation pit.the geotechnical finite element analysis software MIDAS/GTS simulate excavation of foundation pit.which analyzed the sensitivity of formation parameters to soft soil foundation pit,The results show that:The sensitivity of stratum modulus of elasticity to foundation pit deformation is largest and internal friction angle is next.Sensitivity of cohesion are lowest.The research results provided guiding suggestion for the design and construction of deep foundation pit engineering,and offered a reference for sensitivity analysis of similar engineering as well.