摘要
城市地铁施工通常采用盾构方式,盾构施工过程中时常出现地面沉降过大现象,特别是在软土地区此种情况更为常见。介绍了天津地区某地铁在盾构施工期间出现的两次地表沉降过大的现象,并对此地表沉降过大案例的工程概况、发生经过以及处理措施进行了介绍,并详细分析了地表沉降过大发生的原因、后续盾构施工预防以及保障措施,对地表沉降过大的发生机理进行了初步的分析,以期望对于后续盾构工程施工具有较好的指导意义。
Shield tunneling is usually used in urban subway construction,and ground collapse accidents often occur during construction.This situation is more common especially in soft soil.This article introduces two phenomena of excessive surface subsidence during the shield construction of a subway,and introduces the project overview,occurrence and treatment measures of the case of excessive surface subsidence,and analyses the excessive surface subsidence in detail.The cause of occurrence,subsequent shield construction prevention and safeguard measures,a preliminary analysis of the mechanism of excessive surface settlement,in order that it will have a better guiding significance for the subsequent shield construction.
作者
王均山
衣凡
连文博
张建铭
何志伟
谢育杨
仲志武
程雪松
WANG Junshan;YI Fan;LIAN Wenbo;ZHANG Jianming;HE Zhiwei;XIE Yuyang;ZHONG Zhiwu;CHENG Xuesong(China Railway Construction North China Investment&Development Co.,Ltd.,Shijiazhuang 050011,China;Department of Civil Engineering,Tianjin University,Tianjin 300350,China;China Railway 14th Bureau Group Tunnel Engineering Co.,Ltd.,Ji’nan 250013,China;China Railway 18th Bureau Group Co.,Ltd.,Tianjin 300000,China)
出处
《建筑结构》
CSCD
北大核心
2022年第S01期2871-2877,共7页
Building Structure
基金
中国铁建股份有限公司科技研究开发计划项目(2020-C63)
国家自然科学基金面上项目(52178343)
关键词
盾构隧道
掌子面稳定
软土地区
地面沉降
shield tunnel
face stability
soft soil area
surface settlement
