摘要
采用数值模拟手段对上海某深大基坑工程对紧邻地铁车站、区间隧道的影响进行了三维分析计算,重点分析了在基坑的开挖回筑过程中已建地铁车站、区间盾构隧道的动态位移变形。计算结果表明:车站结构、区间隧道的竖向位移、水平位移、差异变形等数值均较小,定性验证了所采用的技术措施的合理性。同时,计算结果也为基坑工程设计、施工方案的进一步优化提供了有益的参考。
A 3D numerical analysis is performed here in order to simulate the influence of nearly constructed deep excavation on the near existing metro station and tunnel sections. The analysis is focused on the displacements of the metro station and tunnel section with time during the excavation and back filling. It is concluded that the vertical and horizontal displacements and deformation of the metro station and tunnel section are comparatively small. It is also proved that the constructiou techniques adopted here is reasonable for this project. Furthermore, the results can be used as the reference for optimum design of the pit and construction plan.
出处
《地下空间与工程学报》
CSCD
北大核心
2010年第A01期1432-1437,1443,共7页
Chinese Journal of Underground Space and Engineering
关键词
基坑
施工
地铁
数值分析
excavation
construction
subway
numerical analysis
