临近地铁区间隧道的深基坑开挖数值模拟分析

Analysis on numerical simulation of deep foundation pit excavation adjacent subway section tunnel

针对深基坑开挖对临近地铁盾构区间隧道的影响,以佛山保利达广场项目为工程背景,采用有限元数值模拟分析基坑开挖及回筑阶段地层位移及隧道变形,并在基坑开挖过程中采取专项保护措施和进行详尽的基坑及地铁隧道监测。结果表明,基坑及地铁隧道均在安全可控范围内。

According to the influence of deep foundation pit excavation adjacent subway shield section tunnel,taking the Foshan Baoli Plaza project as the engineering background,using the finite element numerical simulation analysis on the strata displacement and tunnel deformation of foundation pit excavation and construction phase,and took special protection measures and made detailed foundation pit and subway tunnel monitoring in excavation process,the results showed that both the foundation pit and subway tunnel within safe and controllable range.