多级递阶工程系统抗地震设计整体优化的计算实现

针对多级递阶工程系统结构特点 ,以结构设防烈度为优化指标、抗地震设计为工程背景 ,本文建立该系统整体优化的计算方法体系并付诸实现。首先 ,提出大系统整体与局部划分概念 ,从基元系统出发 ,建立有效的离散型最优化方法和算法 ,形成方法体系的基础层次 ;其次 ,根据该系统逻辑分布 ,提出整体优化的耦合法与分解法 ,构成方法体系的上一层次 ;最后 ,通过该系统本体描述数据设计 ,开发了通用分析程序 ,大量运算校验了它们的速度、精度和稳定性

Computational implementation of global optimization of anti-seismic design for multilevel hierarchical engineering systems

Based on the engineering background of anti\|seismic design and using the structural earthquake protection intensities as the variables, the systematic global optimization methods, that comply with structural character of the multilevel hierarchical engineering system, are developed and implemented. At first, a large\|scale system is partitioned into global and local levels in the context of optimization and a discrete optimization method is proposed for the elementary level. Secondly, from the study of elementary systems, the efficient minimizing approaches and corresponding schemes for the discrete goal functions are put forward to form the secondary level. According to the logical structure of the multilevel hierarchical engineering systems, two kinds of the global optimization methods, the coupling and the decomposition methods, are presented, respectively, which constitute the first level. Lastly, a general purpose analytical program is successfully developed in terms of a well\|designed datasheet. A number of examples are included to demonstrate the speed, accuracy and stability of the methods