第七届全国岩土工程实录交流会特邀报告——杭州地铁一号线湘湖站基坑事故再议
摘要:对7年前发生的杭州地铁湘湖站基坑事故进行了较全面地分析,从施工、设计和管理诸方面提出了讨论。也对我国相关的基坑规范及其应用提出了质疑。作者认为,对该工程事故施工者负有不可推脱的责任;同时也指出,在基坑稳定分析中对饱和软黏土使用固结不排水强度指标和饱和重度是不当的,设计对于高灵敏度软黏土没有给予应有地重视,在整个施工过程中没有封闭风情大道是一个失误。
Abstract:In the paper,some discussions on accident of foundation excavation of Xianghu Station of Hangzhou subway No.1 line are proposed from construction,design and management.Some questions are proposed about codas concerned with building foundation excavation and its applications.It is indicated that constructors have important blame in the accident.In the design of the engineering,there are mistakes.For example,in analyses of stability against overturning of retaining structure,overall stability by Swedish circle method and stability against heaving of pit bottom,if the CU shear strength parameters of saturated clay are adopted,the resistant force has to be calculated by buoyant unit weight rather than by saturated unit weight of soil.The high sensitive of clay is not paid enough attention.It is an important fault that the Fengqing road is not closed during the construction.
中文标题:
第七届全国岩土工程实录交流会特邀报告——杭州地铁一号线湘湖站基坑事故再议
Discussion on Accident of Foundation Excavation of Xianghu Station of Hangzhou Subway No.1 Line Again
作者:
李广信
Li Guangxin
作者简介:李广信,1941年生,男,汉族,黑龙江宾县人,1966年毕业于清华大学水利系,博士,教授,主要从事土的本构关系、土工合成材料、高土石坝和地基基础工程等方面的科研工作。E-mail:mail.tsinghua.edu.cn
通讯地址:
清华大学水沙科学与水利水电工程国家重点实验室, 北京 100084
StateKeyLaboratoryofHydroscienceandEngineering,TsinghuaUniversity,Beijng100084,China
中图分类号:TU47
doi:10.3969/j.issn.1007-2993.2015.06.002
出版物:岩土工程技术
收稿日期:2015-09-09
网络出版日期:2021-07-19
关键词:基坑工程,强度指标,高灵敏度黏土,水土合算
Key words:foundation pit engineering,strength parameters,high sensitive clay,estimating water and earth pressure together
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基金项目:
基金项目: 国家自然科学基金项目(51279085) 水沙科学与水利水电工程国家重点实验室(2013-KY-4) 重点基础研究发展计划(973)项目(2013CB036402)
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