粉喷桩单桩复合地基承载及变形特性的数值分析

Numerical Analysis of the Bearing and Settlement Performances of DJM Pile Composite Foundation

采用有限元法对粉喷桩单桩复合地基进行数值试验。对在整个加荷过程中单桩荷载传递特性、变形特性和该复合地基桩土应力比的变化规律进行了分析,同时分析了桩体及褥垫层的变形模量对桩土应力比和桩土变形特性的影响。

The numerical evaluation experiments on the single dry-cement Jet mixing pile composite foundation is made by means of the finite element method (FEM). The loading transfer and settlement of the single pile in the composite foundation and the variations of stress ratio and settlement of pile-soil are analyzed during loading process,and the influences of the modules of pile and cushion layer on the stress ratio and settlement of pile-soil are analyzed.