摘要
本文在文献[1,2]提出的离散变量的结构优化设计的多阶段决策分析模型及解法的基础上,进一步讨论了平面刚架的结构优化设计问题;着重说明了指标函数矩阵的形成,状态变量集的设计等问题,为这一解法作了更为全面和系统的论述;在有位移约束的问题中同时引入了应力约束条件,讨论了多工况的处理,使此解法能毫无困难地应用到实际工程设计中:同时,编制了刚架结构优化的计算机程序,在微机上作出了有30根杆件的两跨六层刚架在四种工况下的计算例题。
Based on the multistage decision analysis model and the solution method for the discrete optimum design of structures presented in Ref.[1, 2]. the structural optimum design for plane frames is further discussed in this paper.The formulation of the object function matrices and the design of the state variable sets are explained clearly,and the solution method is exposed systematically and overall. The stress constraints are also considered in the problem with displacement constraints, and multi-load-case problem is discussed as well, thus the method can be applied to practical engineering design without any difficulties. The computer program for frame structure optimum design is coded, and the computational example of a two-bay and six-story frame with 30-members with 4-load-case on microcomputers is given in this paper.
