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.
出处
《广东土木与建筑》
2012年第10期55-57,共3页
Guangdong Architecture Civil Engineering
关键词
盾构隧道
既有结构
有限元分析
应力集中
shield tunnel
existing structure
finite element analysis
stress concentration
