摘要
以佛山某地铁工程为例,分析盾构隧道开挖与上部地面结构同步施工的相互影响。采用Midas GTS NX软件建立三维有限元模型,对比上部结构在正常施工与停止施工的2种工况下盾构隧道开挖过程中的位移状况。结果表明:在"桩基础+托换梁"的条件下,上部结构施工对下穿隧道的盾构开挖有一定影响,但影响较小,两者同步进行施工基本可行。
Taking a subway project of Foshan for example,the interaction of the synchronous construction of the upper ground structure and the shield tunnel excavation is analyzed,and the three-dimensional finite element model is established using the Midas GTS NX software. The displacement conditions during the shield tunnel excavation process are compared between 2 working situations,where the superstructures are under normal construction or non-construction. The results show that under the condition of'pile foundation+underpinning beam',the construction of the superstructures has a certain influence on shield excavation of under tunnels,but the impact is small,so the simultaneous construction of the two is basically feasible.
作者
高锐斌
Gao Ruibin(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510641;State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510641)
出处
《工程建设》
2019年第2期7-11,共5页
Engineering Construction
关键词
地铁隧道
盾构法
下穿施工地块
数值分析
subway tunnel
shield method
excavation under construction site
numerical analysis
