【摘要】 将现代软件工程方法与有限元方法结合起来 ,开发了逆作法施工分析的面向对象有限元分析软件———TDM ,土体弹塑性模型采用修正剑桥模型 ,并用之于某市火车站北口人防工程逆作法施工数值模拟计算分析 ,通过两方案比较 ,最后提出有关施工建议 ,可为设计师们提供有益参考。更多还原

【Abstract】 The Object-Oriented FEM has been applied in simulating the construction by the top-down method in this paper. In combination of the modern object-oriented software engineering approach with the traditional finite element method, the TDM program has been developed. This program with quite strong preprocess and post-process function can run for the Windows system, and calculate elastic, elasto-plastic and visco-elasto-plastic problems using linear elastic model, the modified Cambridge model with an element library composed of multiple element types. The elasto-plastic problem results have been proved by the results from the common triaxial tests. The TDM has been applied to analyze the top-down construction of the underground engineering in one city. Based on the caculation results, the reasonable construction scheme has been recommended. The TDM program can be taken as analytical tool for the reference in the design and construction of the top-down method.更多还原