框架结构线性黏滞阻尼器双目标同步优化布置研究  

Research on double-objective synchronous optimization distribution of linear viscous dampers for frame structures

作　　者：周玉娴 王曙光[1] ZHOU Yu-xian;WANG Shu-guang(College of Civil Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南京工业大学土木工程学院,江苏南京211816

出　　处：《振动工程学报》2023年第1期44-51,共8页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(51678301,51678302)。

摘　　要：在结构减震设计中,寻找最佳的阻尼器布置方案使减震效果最大化是一个至关重要的问题。用状态空间法描述在地震作用下布置线性黏滞阻尼器的减震系统,求解结构动力响应。采用基因属性保留遗传算法对减震系统进行编码,引入并列选择法对两个性能目标进行处理,可以实现阻尼器的双目标同步优化布置。将本文与已有研究成果的多层及高层框架阻尼器优化布置方案进行对比,双目标同步优化方法在改进原结构响应目标(如层间位移)减震效果的同时,还可以改善其他种类结构响应(如楼层加速度)的减震效果,使得减震结构具有更加优越的综合结构性能。双目标同步优化方法可以高效处理双目标的阻尼器同步优化问题。In structural damping design,it is a crucial issue to find the best arrangement of dampers to maximize the damping effect.At present,most of the damper distribution schemes can better meet the control objective of single response index,such as story displacement or floor acceleration.However,there is still a lack in coordinating and optimizing multiple performance objectives.In this paper,the damping system with linear viscous dampers under seismic action is derived by state space description method.The structural dynamic responses are solved.The gene-reserved genetic algorithm is used to encode the damping system.And the paral⁃lel selection method is introduced to deal with the two performance objectives,which can achieve the double-objective synchronous optimal placement of dampers.Compared with the existing literatures of multi-story and high-rise frame damper distribution optimi⁃zation scheme,the double-objective synchronous optimization method can improve the damping effect of original structure response target,such as story displacement.At the same time,the damping effect of other response can be significantly improved,such as floor acceleration.The damping structure has more superior comprehensive structural performance.Therefore,the double-objec⁃tive synchronous optimization method can effectively deal with the double-objective optimization problem for dampers.It has high practical value.

关 键 词：结构减震设计 双目标同步优化 状态空间法 基因属性保留 阻尼器布置 

分 类 号：TU352.1[建筑科学—结构工程]