Abstract
For a high-speed railway bridge built in soft soil, excessive settlement can seriously affect the railway safety of operation. So, how to strictly control the settlement has become a common concern in this filed. As a new type of bridge foundation, Lattice Shaped Diaphragm Wall (hereinafter for LSDW) provides a potential new solution to this problem. In order to investigate the applicability of LSDW as bridge foundations in soft soil, three models (pile group, LSDWs with single chamber and two chambers) under similar material quantity are studied by small-scale model tests and numerical analysis based on FLAC3D. The settlement, skin friction, soil resistance under cap and load sharing ratio of three models are studied thoroughly, and special attention is given to the investigation of the settlement difference of three models under similar material quantity. It turns out to be that the bearing capacity will be improved and the settlement will be reduced for a practical bridge foundation if it can adopt LSDWs instead of pile group in soft soil.
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Wu, Jj., Cheng, Qg., Wen, H. et al. Comparison on the vertical behavior of lattice shaped diaphragm wall and pile group under similar material quantity in soft soil. KSCE J Civ Eng 19, 2051–2060 (2015). https://doi.org/10.1007/s12205-015-0367-3
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DOI: https://doi.org/10.1007/s12205-015-0367-3