摘要
由于拱坝应力分析比较困难,拱坝优化问题的求解难度较大,动荷载作用下的优化尤其困难。经过10年的努力,作者提出了一系列有效的求解方法,如静态和动态的内力展开法、设计变量指数变换法、不对称矩阵子空间迭代法和静力和动力荷载下的敏度分析方法等等,不仅可以迅速求解静荷载作用下的拱坝优化问题,并实现了动荷载作用下拱坝的体形优化。这些求解方法也适用于拱坝以外的其他结构优化,具有普遍意义。
As the stress analysis of arch dam is rather complicated,the solution of the problem of shape optimization of arch dams is more difficult,especially under dynamic loads.After 10 years' work,the authors have proposed a series of effective methods of solution,such as the internal force expansion method,the exponential transformation of design varia-bles,the subspace iteration method for eigen problem of nonsymmetrical matrix and the methods for analysing the stresses and stress sensitivities of arch dams under static and dynamic loads.By means of these methods,the solutions for the problems of shape optimization of arch dams under static and dynamic loads may be obtained quickly.These methods are suitable for any types of structures other than arch dam,so they are universal methods for structural optimization.
出处
《水利学报》
EI
CSCD
北大核心
1992年第5期20-26,共7页
Journal of Hydraulic Engineering
