基于优化准则法与粒子群算法的超高层建筑抗风性能设计优化  

Wind-induced vibration performance-based optimal structural design of super high-rise buildings based on optimality criteria and particle swarm optimization method

作　　者：黄铭枫[1,2] 王淳禾 林巍[2] 肖志斌[2] HUANG Mingfeng;WANG Chunhe;LIN Wei;XIAO Zhibin(Institute of Structural Engineering,Zhejiang University,Hangzhou 310058,China;Center for Balance Architecture,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]浙江大学结构工程研究所,浙江杭州310058 [2]浙江大学平衡建筑研究中心,浙江杭州310058

出　　处：《建筑结构学报》2023年第5期58-67,共10页Journal of Building Structures

基　　金：国家自然科学基金项目(51838012,52178512);浙江省自然科学基金项目(LZ22E080006)。

摘　　要：为了使超高层建筑结构在抗风性能设计中不但满足结构安全性要求,而且满足舒适度要求,采用优化准则法(OC)以及粒子群算法(PSO),建立了一个以降低结构设计造价为优化目标、同时考虑结构层间位移角和风振加速度等设计约束条件的结构抗风性能设计优化(OC-PSO)方法。在结构优化的过程中采用基于风洞试验的超高层建筑结构风振响应频域计算方法对结构设计的等效静力风荷载进行更新,使其与结构动力特性相匹配,在一定程度上增大了优化问题的寻优空间。某50层实际超高层建筑结构优化结果表明:OC-PSO方法能够在满足抗风性能设计条件的前提下,得到具有最优结构造价的超高层建筑优化设计方案,节省结构造价3.3%。In performance-based wind engineering design,the design requirements of structural safety and serviceability performance must both be satisfied.This paper presents a wind-resistant optimal design method by combining particle swarm optimization(PSO)and optimality criteria(OC);the method(OC-PSO)aims to minimize the total cost of the buildings subject to the constraints of lateral drifts and top peak synthetic accelerations.In the optimization process,a frequency domain method based on wind tunnel test results is applied to update the equivalent static loads so that they can always match the dynamic properties of the structure,and the optimization space is enlarged to some extent in this way.Then,the proposed method was applied to a 50-story super high-rise building.The results show that a relatively optimal result satisfying the wind-resistance design requirements with a 3.3%cost reduction can be obtained by OC-PSO.

关 键 词：超高层建筑 结构优化设计 粒子群算法 优化准则法 抗风性能 

分 类 号：TU973.32[建筑科学—结构工程]