盾构隧道施工对既有隧道及管线影响分析  

Analysis of the Affect to the Existing Tunnel and Pipeline Under Shield Construction

作　　者：胡云龙[1] 张远荣[1] 张征亮[2] 张新金[2] 

机构地区：[1]中国铁道科学研究院深圳研究设计院,深圳518034 [2]广东省建筑科学研究院,广州510500

出　　处：《广东土木与建筑》2012年第10期55-57,共3页Guangdong Architecture Civil Engineering

摘　　要：以某地铁盾构隧道临近既有隧道、管线施工为背景,采用ANSYS软件对盾构隧道施工过程中地层沉降、既有隧道及管线的变形和受力情况进行了分析,结果表明盾构施工过程中应力重分布致使地表最大位移向隧道左侧偏移,既有隧道及管线易在墙角部位产生应力集中,且既有隧道有向盾构隧道净空倾斜位移的趋势。Based on the construction of a shield tunnel near the existing tunnel and pipeline,the software of ANSYS was used to analyze the ground stratum squatting and the deformation and forces of the existing tunnel and pipeline under the construction process of shield tunnel.The result shows that the stress redistribution caused the maximum ground stratum offset the left side during the construction process of shield tunnel;the existing tunnel and pipeline easily caused stress concentration in the corner site,and the existing tunnel have the trend of tilt displacement to the shield tunnel clearance.

关 键 词：盾构隧道 既有结构 有限元分析 应力集中 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]