建筑结构学报2018，Vol.39Issue(1)：129-135,161,8.DOI:10.14006/j.jzjgxb.2018.01.015
周期与层间位移角双约束条件下超高层结构优化设计方法
Optimal design method for super tall buildings under period and story drift constraints
摘要
Abstract
The formulas for calculating the sensitivity coefficients of design constrains (period and stroy drift) to member material costs were derived,and the combination sort method for structural optimization under double constraints was proposed.The recommended formulas and constant incremental sensitivity analysis method were applied on the sensitivity analysis of a two-story plane frame,and the results were compared.Finally,a super tall building structure was optimized using the proposed method.It's revealed that the results of the proposed formulas and constant incremental sensitivity analysis method are consistent,which verifies the accuracy of the proposed formulas.Meanwhile,in the optimization,when the material cost change of each member group is controlled within 10％,the sensitivity coefficient can be regarded as constant.In the initial phase of optimization,the changing rate of design constraints is slow.But when the optimization of insensitive member groups is complete,the sensitive member groups will be optimized,as a result of which,the changing rate of design constraints will become faster.In the process of optimization,the maximum story drift will appear in different stories.More stringent limit of story drift can be used in order to control the actual magnitude of inter-story drift within the specification limit.关键词
超高层结构/优化设计/双约束/敏感性分析/组合排序法Key words
super tall building/optimal design/double constraints/sensitivity analysis/combination sort method分类
建筑与水利引用本文复制引用
赵昕,李浩,秦朗..周期与层间位移角双约束条件下超高层结构优化设计方法[J].建筑结构学报,2018,39(1):129-135,161,8.基金项目
上海市优秀技术带头人计划项目(14XD1423900). （14XD1423900）
