预应力管桩承载力性状的有限元计算分析

Finite Element Analytical Study on Bearing Capacity Behavior of Prestressed Pipe-pile

基于有限元数值方法,分析预应力管桩桩与土之间作用机制时采用荷载传递法,对Bowles方法进行改进,避免了需现场测量的限制。应用Fortran软件编制预应力管桩单桩计算程序,通过多层土体实例计算,其结果与静载试验结果基本吻合,说明其用于分析预应力管桩承载力性状具有一定的合理性,对预应力管桩工作性状研究和工程应用具有一定的参考价值。

Based on the finite element numerical method,bowlas method is improved by employing the load transfer function of pile shaft soil about analysis of prestressed pipe-pile and soil interaction mechanism. This method avoids the limitation of field measurement. The Fortran is used to build the calculation program for the prestressed single pipe-pile and the computational results in various soils agree well with the compressive static load test results. It is reasonable to employ the calculation program to research the behavior of the pre- stressed pipe-pile. The results will be helpful for engineering application and further research about the bearing capacity behavior of the prestressed pipe-pile.