基坑开挖对邻近地铁车站影响分析及安全控制

摘要

依托具体工程，建立了土层—结构的三维数值计算模型，分析了基坑开挖对邻近轨道交通车站影响，数值计算表明：靠近轨道交通车站一侧采用钻孔灌注桩+支撑的支护形式，同时对坑内外土体进行加固，能有效减少围护结构和周边建筑物的变形，满足基坑开挖对轨道交通车站的保护要求；同时提出相应的确保轨道交通安全的设计和施工措施。%Based on the engineering case, the three-dimensional numerical model of soil-structure is established, the influence of foundation ex-cavation on the adjacent rail traffic station is calculated. The results show that the deformation of the supporting structure and surrounding build-ings are effectively reduced and the protection requirements of foundation excavation to rail transit station are meted by using cast-in-place bored pile+support near the rail transit station and soil reinforcement, to ensure rail traffic safety, the corresponding design and construction measures are put forward.