基于不同原理的地铁车站基坑数值分析及现场监测研究

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• 英文论文题名：Numerical Analysis and Field Monitoring Research on the Excavation of Subway Station Based on Different Principles
• 论文作者：侯本申 ; 蒋雅君 ; 杨其新
• 英文论文作者：HOU Benshen ; JIANG Yajun ; YANG Qixin ; Key Laboratory of Transportation Tunnel Engineering ; Ministry of Education ; School of Civil Engineering Southwest Jiaotong University
• 年：2016
• 作者机构：西南交通大学交通隧道工程教育部重点实验室土木工程学院;
• 论文关键词：基坑 ; 支挡结构 ; 弹性支点法 ; 硬化土模型
• 英文论文关键词：Foundation pit ; Retaining and protection structure ; Elastic fulcrum method ; Hardening-soil
• 会议召开时间：2016-10-24
• 会议录名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会论文集
• 语种：中文
• 分类号：U231.3
• 学会代码：OGTY
• 会议名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会
• 会议地点：中国四川成都
• 主办单位：中国土木工程学会隧道及地下工程分会
• 学会名称：中国土木工程学会
• 页数：8
• 文件大小：1737k
• 原文格式：O
• 会议级别：全国

摘要

数值分析是基坑工程中对支护结构和周围土体进行计算分析的一项重要手段,监控量测是基坑工程施工中的必备技术方案,二者对于指导设计和施工具有非常重要的意义。在分析了弹性支点法和平面连续介质有限元法的基础上,借助两款数值分析软件理正深基坑7.0和Plaxis2D,并结合地铁车站基坑工程现场监测数据,系统地分析了两种数值分析方法和现场监测结果在地表沉降、支护结构侧移和内力以及内支撑轴力的一致性及存在的差异。研究表明:弹性支点法计算过程简单,计算结果可以用于指导设计和施工。平面连续介质有限元法通过对基坑支护结构和周围土体进行整体分析,计算结果也更符合实测数据,是以后进行地铁车站基坑工程计算的发展趋势之
Numerical analysis is an important method for analyzing inthe excavation of the retaining and protection structure and the surrounding soil,Monitoring measurement is an essential technical scheme for excavation engineering construction,It has very important meaning for guiding the design and construction.On the basis of the elastic subgrade method and planar continuous medium finite element method,through a subway station excavation instance,by means of two numerical analysis software Lizhengdeep excavation7.0 and PLAXIS2 D,and combined with the subway station excavation engineering site monitoring data,Systematically analyzed the consistency and difference of the ground settlement around the stage of excavation,lateral and internal force of retaining structure and strut axial forces.Studies have shown that:The calculation process of the elastic fulcrum method is simple,The calculation results can be used to guide the design and construction,in terms of analysis of the surface subsidence around foundation latter is more realistic,and this method is the development trend of the foundation pit engineering calculation in the future.

引文

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