基于有限元的预应力混凝土梁桥的优化分析

介绍了结构优化设计的基本原理和在Ansys软件中的实现过程，在有限元分析中钢筋混凝土模型和预应力模型的实现方案，及如何在Ansys软件中建立钢筋混凝土单元模型和预应力单元模型。并讨论在优化过程中各参数选取时要考虑的因素。最后提供了一个预应力混凝土简支T型梁的优化计算模型，从而提供了基于有限元的预应力混凝土梁桥优化分析的具体实现方法，为更复杂的优化计算提供了计算基础。

Optimization Design of Prestressed Concrete Beam Bridge Base on Finite Element Analysis

In this paper, the fundamental principle of structural optimization design and the processes in Ansys software are introduced Based on the finite dement analysis the paper discusses realization method of reinforced concrete model and prestressed model, and introduces how to establish the reinforced concrete rnodd and prestressed model in Ansys software. The paper also discusses the factors that should be considered when choose optimization parameters. At last the paper provides a optimization design model of T-shaped simple-supported prestressed ooncrete beam bridge, which gives the realization method of the optimization design of prestressed concrete beam, and provides the design foundation for the more complex optimization design problems.