桩基变刚度调平前后在水平力及偏心荷载下的性状分析

Character analysis of balance and imbalance of varying rigidity of pile foundation under horizontal and vertical eccentric load

基于有限元软件模拟分析,选取6种模型,在群桩总体积相同的条件下对比分析了桩基在竖向均布荷载作用下不同的布桩方式下筏板差异沉降、水平力及竖向偏心荷载作用下调平前与调平后筏板差异沉降、筏板在调平前与调平后的弯矩、桩在调平前与调平后的轴力与弯矩,得出桩基调平前后筏板与桩的受力变化规律,为理论分析变刚度桩的工作性状提供了参考。

By numerical analysis software, the article select six modes. We compare and analyze differetial settlement of raft balance former and latter with differently distributed pile at same volume of all the pile under formal vertical load, differetial settlement and bending moment of raft balance former and latter under horizontal and vertical eccentric load, axial force and bending moment under horizontal and vertical eccentric load,variable bending moment of raft balance former and latter. We conclude differetial settlement and bending moment size of raft and pile on balance former and latter of composite foundation, this serves as helpful reference for a theoretical analysis of working properties of varying rigidity piles.