工程系统可靠度优化的多阶段决策算子法  

MULTISTAGE DECISION OPERATOR TECHNIQUE FOR RELIABILITY OPTIMIZATION OF ENGINEERING SYSTEM

作　　者：黄炳生[1] 王文涛[1] 

机构地区：[1]南京建筑工程学院,南京210009

出　　处：《工程力学》1997年第1期69-78,共10页Engineering Mechanics

摘　　要：本文应用多阶段决策算子法,成功地解决了二种情况下工程系统可靠度优化问题:(1)在工程系统总造价和总损失期望之和给定的情况下,求各子系统的可靠度,使工程系统的总可靠度最大;(2)在给定工程系统总可靠度条件下,求各子系统的可靠度,使工程总造价和总损失期望之和最小.然后把桁架结构看作一个系统,讨论二种情况下基于可靠度最优分布的桁架优化设计.本文方法概念清晰,计算简便,具有很大的应用价值.By the multistage decision operator technique,this paper successfully solves the problem of optimal reliability distribution under two cases,(1)The reliability is maximized un- der condition that the total cost and loss expectation are given.(2)The total construction cost and loss expectation is minimized under predetermined reliability of the engineering system. Then the truss structure is taken as a system and is optimized based on optimal reliability dis- tribution.The concept is clear and the methot is simple,and effective.

关 键 词：工程系统 可靠度 优化 桁架结构 

分 类 号：TU311.2[建筑科学—结构工程] TU323.4