预应力管桩在基坑开挖中的受力特性及有限元分析

预应力混凝土管桩在基坑开挖过程中由于挖土施工不当等原因常会发生桩身偏斜事故，造成较大的经济损失并且延误工期。本文分析了承受土体侧向位移的桩的受力特性，并采用通用有限元分析程序对比分析了各种开挖施工方式下管桩的偏斜和内力，对设计施工提出了一些建议。

Mechanical Behavior and Finite Element Analysis of Pretensioned Spun Concrete Piles in Excavation

Pretensioned spun concrete piles often incline in the process of excavation because of incorrect construction method. When accident occurs, the remedy measures will cost a lot of money and time. This paper analyses the effect of lateral soil movement on pile. A finite element program is applied to calculate the displacements and internal forces of piles for different excavation methods. Some suggestions are given for design and construction.