复杂地质条件下地铁车站地下连续墙技术应用研究

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中图分类号：TU74;TQ172.4+1 文献标志码：A文章编号：1001-5922（2026）1-0250-04

Abstract：To address the challenges such as water and soil pressure and surrounding environmental constraints facedbydeep foundation pitsof metrostations undercomplex geological conditions，this studyinvestigates the application of diaphragm wall technology.A hybrid support system consisting of a "square pile-diaphragm wallcomposite structure ⋅+ 3 layers of fiber-reinforced concrete supports layers of steel supports" was adopted，and the groove section division and the waterproof design of mortise-tenon rigid joints were optimized.The construction - stage deformation wasanalyzed through 22 monitoring points.The results show that the maximum horizontal displacement of the retaining structure is 20.1mm and the maximum deformation of the diaphragm wall is 17.5mm ， both of which are lower than the early warning values，verifying the stability of this technology.

Key words：subway station;deep foundation pit ;retaining structure;diaphragm wall;composite support system

城市地铁车站深基坑工程常面临土压力、地下水压力耦合作用以及周边建筑密集、施工空间局促等严峻挑战[1]。（剩余5504字）