刚性基础下组合桩复合地基下卧层沉降分析

Substratum settlement analysis of composite piles foundation under rigid foundation

针对刚性基础下长短组合桩复合地基,采用Flac3D模拟软件结合现场资料构建有限元分析模型,分析了长短组合桩复合地基下卧层的沉降规律。通过控制改变荷载等级与短桩长度,对复合地基下特征点进行监测记录分析。根据实验分析结果,进一步揭示长短桩复合地基下桩土各个交界面的沉降情况,为沉降计算的改良提供理论支撑。

For the composite foundation with the long and short composite piles under rigid foundation,combined with field data,a finite element analysis model was established by using Flac3D simulation software,the settlement law of the substratum under the long and short composite piles foundation is analyzed. By controlling the change of load grade and short pile length,the characteristic points of composite foundation are monitored and recorded. According to the experimental analysis results,the settlement of the pile-soil interface at the long and short pile composite foundation is revealed further,which provides theoretical support for the improvement of settlement calculation.