Different mechanical modes of diaphragm wall joints for foundation pit of subway station in Changzhou
ZHANG Si-yuan1, TONG Li-yuan1, ZHU Wen-jun2, YOU Di3
1. Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China; 2. Changzhou Rail Transit Development Co., Ltd., Changzhou 213022, China; 3.Changzhou City Planning and Design Institute, Changzhou 213002, China
Abstract：For the design of diaphragm wall of Changzhou metro line No. 1 of foundation pit project at Huaide Station, the horizontal displacement response to different mechanical joint modes and the influences of the joint types on the stress of diaphragm wall and support system are studied through ABAQUS simulation. The results show that the maximum horizontal displacement of the joint is most likely to happen at the upper part of excavation surface of foundation pit, leading to a better guidance to prevent the joints from over-large deformation and large-area seepage. Compared with the relative flexible joint, the rigid joint is more compatible with diaphragm wall, and it can increase resistance of retaining structures to resist deformation and to reduce stress of the support system and increase stability of retaining structures. The results can be as reference for choosing the right joint mode for foundation pit project of subway station in Changzhou.
张思源, 童立元, 朱文骏, 尤迪. 常州地铁车站基坑地下连续墙不同接头型式分析[J]. 岩土工程学报, 2019, 41(S2): 240-243.
ZHANG Si-yuan, TONG Li-yuan, ZHU Wen-jun, YOU Di. Different mechanical modes of diaphragm wall joints for foundation pit of subway station in Changzhou. Chinese J. Geot. Eng., 2019, 41(S2): 240-243.
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