基于渐进结构优化法的拱坝结构曲线函数优化

Optimization Research of Arch Dam Structure Curve Function Based on the Evolutionary Structural Optimization Algorithm

拓扑优化作为结构优化研究领域中的前沿课题和热点问题近年来受到设计人员的重视。其作为后续优化的起点,常见于工程结构的概念设计领域。另外,拓扑优化与后续的尺寸优化及形状优化关系密切。渐进结构优化算法原理简单,概念明确,极大地促进了拓扑优化的发展。本文基于渐进结构优化算法,通过现有的ANSYS软件,采用APDL语言开发了二维厚拱拱坝的拓扑优化程序,实现了拱坝渐进结构优化算法的应用。分析结果验证了拱坝结构二次拱理论的正确性,并分析了不同形式拱在均布荷载下合理的受力轴线。

As the frontiers and hot issue in the fields of structure optimization,topological optimization gets much attention by designers in recent years.It is applied in the concept of engineering structure design field as the staring point of subsequent optimize.In addition,the topology optimization closely relates to subsequent size and shape optimization.The evolutionary structural optimization algorithm has simple principle and explicit concept,and greatly promotes the development of topological optimization.Basing on the evolutionary structural optimization algorithm,this paper develops the topology optimization procedures for a two-dimensional thick arch dam by using the existing ANSYS.The results verify the correctness of arch dam structure second arch theory,and analyze the reasonable stress axis of different forms arch under uniformly distributed load.