基于新型本构模型的胶凝堆石坝多目标优化

摘要

借助ANSYS有限元软件的二次开发平台和优化设计模块,进行基于新型胶凝堆石料本构模型的胶凝堆石坝结构分析,并采用加权多目标优化的思想,综合考虑胶凝堆石坝的经济性和安全性,选取不同目标权重组合,对该坝型断面进行优化设计研究.结果表明优化坝体断面可保证良好的安全稳定性和经济性,且分析结果符合实际工程的一般规律,可为该坝型的设计提供参考依据.%By means of the second-development platform and optimization module in the finite element software ANSYS, structural analysis of a cement sand and gravel (CSG) dam was conducted based on a new constitutive model. The idea of weighted multi-objective optimization, which synthetically considers the economical efficiency and security efficiency, was adopted to conduct research on optimization design of the CSG dam with different weighting coefficient combinations. The results show that the optimized dam sections have a high degree of stability and economical efficiency, and the research results that accorded with general rules of practical engineering can provide references for the design of this dam.