管桩支护水平位移数值模拟

Numerical Simulation of Horizontal Displacement for Pipe Pile Support

利用三维连续体拉格朗日快速分析(FLAC3D)软件,分别数值模拟了管桩壁厚、直径、弹性模量变量下的预应力管桩深基坑支护结构变形(水平位移),获得了影响预应力管桩深基坑支护结构变形(水平位移)的规律,并在此基础上,根据预应力管桩规范,进一步分析了预应力对抗裂弯矩检验值影响,从而为工程设计和施工提供参考依据.

In this paper,the deformation of supporting structure（ horizontal displacement） under the variableswall thickness,diameter and elastic modulus was respectively simulated and calculated by the fast Lagrangiananalysis of continua 3 D（ FLAC3 D） software. The influence law of the deformation of supporting structure（ horizontal displacement） was obtained. On this basis,the influence of the pre-stressed on the crack resistant moment test value was further analyzed according to the specification for the pre-stressed pipe pile,thus the reference basis is provided for the engineering design and construction.