桥梁常见桩基础形式的ANSYS仿真分析

An ANSYS-Aided Simulation Analysis of Common Forms of the Pile Foundation for Bridges

桥梁桩基础设计和计算通常按相关规范给定的方法进行,规范算法不仅将空间的群桩基础完全简化成了平面问题,而且对于很多计算中的难点,规范还采用了大量的合理或者不合理的近似。在与规范方法假定一致的条件下或在规范的框架下,如何利用有限元方法实现大型桩基础的计算分析是很有必要解决的问题。通过一个典型的群桩算例,对各种桩基础形式进行了计算和理论分析。分析结果表明以ANSYS为计算手段的有限元仿真算法可以使桩基础的计算更加快捷,结果更加合理,也能在一定程度上解决一些桩基础的计算难点,具有一定的理论意义和工程实践应用价值。

The design and calculation of the pile foundation for bridges are usually performed by methods prescribed in the relat- ed technical specifications. The prescribed calculation methods have not only simplified the calculation of the spacial pile founda- tion completely into plane problems, but also adopted a large number of reasonable and unreasonable approximations for many of the difficulties in the calculation. Under the conditions in agreement with the methods prescribed in the technical norm or in the frame of the technical norm,the problem of how to use the finite element method for the analysis and calculation of large-type pile foundation is worth studying and solving. With the calculation of a typical group of piles as a practical example, various forms of pile foundation are calculated and theoretically analyzed in the paper. The finite element simulation method with the ANSYS as its calculation means may quicken the calculation for the pile foundation,achieve more rational results and help solve some of the difficult problems in the Calculation for the pile foundation to a certain extent. It is of certain value in both theory and the application to engineering practice.