采用面向对象有限元法程序分析逆作法施工

将现代软件工程方法（面向对象方法）与有限元方法结合起来，开发了对逆作法施工进行数值模拟分析的面向对象三维有限元分析软件。其中土体力学本构模型采用修正剑桥模型，并且用试验数据进行了程序验证。然后用该程序对某市人防工程逆作法施工进行了数值模拟计算分析，通过两方案比较，最后提出有关施工建议。

Applied Object-Oriented FEM Program in Simulating the Construction by the Top-Down Method

The Object-Oriented FEM program has been developed and applied in simulating the aonstructiun by the top-down method in this paper. Combined the modern object-oriented sotfware 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 viseo-elasto-plastic problems using linear elastic model, the modi- fied Cambridge model with an element library composed of multiple element types. The elasto - plastic problem results, has been proved by the results from the common triaxial tests. The TDM has been applied to enalysis the top-down construction of the underground engineering in one city. Based on the calculation results, the reasonable construction scheme has been reeommendad.