地下车库结构抗浮稳定性

Analysis and control of anti-floating of underground garage

采用理论计算和数值模拟分析了地下结构的上浮变形机理,运用Flac3D软件分析抗浮桩桩长、桩径及桩距对抗浮桩承载力的影响.研究结果表明:地下结构上浮变形主要由于地下水浮力大于结构自重,加固中不能单一改变抗浮桩单个参数来提高其稳定性.以沈阳丁香水岸二期的地下车库作为研究对象,验证了分析结果的合理性并对该车库增设抗浮桩进行加固,可供类似工程参考.

Anti-floating pile is used as the basic measure of anti-floating design of underground structures, and the selection of design parameters of anti-floating piles has a certain effect on anti-floating effect. This paper applied theoretical calculation and numerical simulation analysis of the floating of underground structure deformation mechanism, and analyzed the anti-floating pile length, pile diameter and pile -om anti floating pile bearing capacity influence. The results of study show that the surface deformation of the underground structure is mainly due to the buoyancy of groundwater which is more than the structural weight, and the single parameter of anti-floating piles can not be changed in the reinforcement. This paper took the second phase of Shenyang Clove waterfront underground garage as the object of study, and verified the rationality of the analysis results, and the garage additional anti-floating pile reinforcement can offer a guidance for similar engineering project.