基于多水准分级屈服阻尼器的减震结构优化方法  

Optimization methods of seismic structures based on multi-level graded yield dampers

作　　者：郭甘 陈云 王保平 雷龙刚 张海亮 Guo Gan;Chen Yun;Wang Bao-ping;Lei Long-gang;Zhang Hai-liang(School of Civil Engineering&Architecture,Hainan University,Haikou 570228,China;China Railway First Bureau Group Construction and Installation Engineering Co.Ltd,Xi'an 710054,China)

机构地区：[1]海南大学土木建筑工程学院,海南海口570228 [2]中铁一局集团建筑安装工程有限公司,陕西西安710054

出　　处：《工程抗震与加固改造》2025年第2期57-64,共8页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金(51968020);海南省科技专项资助(ZDYF2022SHFZ353);横向课题项目(ZTYJ/JAGS-JHHZGC-KY-01)。

摘　　要：本文基于改进的遗传算法,提出了一种基于多水准分级屈服阻尼器的减震结构优化方法,以基于层间位移和楼层加速度综合考虑的指标为评价函数,首先计算出小震、中震和大震作用下单屈服点阻尼器的最优屈服位移及其对应的屈服承载力,据此构建了多水准分级屈服阻尼器的骨架曲线和恢复力模型,采用该模型对减震结构进行优化。以9层钢框架结构为例,采用提出的减震优化方法,通过地震时程弹塑性反应分析表明:算法收敛可靠,优化方法能够最大程度发挥分级屈服阻尼器的减震功效,相比单一屈服点阻尼器,其对结构在不同强度地震作用下的振动控制效果更为显著,证实了分级屈服阻尼器减震结构优化方法的有效性。Based on the improved genetic algorithm and the finite element analysis software SAP2000,this paper proposes an optimization method of damping structure using multi-level graded yield dampers.The index based on the comprehensive consideration of interlayer displacement and floor acceleration is used as the evaluation function to calculate the optimal yield displacement and bearing capacity of dampers under different seismic actions.Multi-level graded yield dampers are constructed to optimize the damping structure.Taking a 9-story steel frame structure as an example,this optimization method is used to optimize the structure's shock absorption.The calculation results show that the algorithm is convergent and reliable,and the optimization method can maximize the effect of the dampers and realize the purpose of effectively controlling the deformation between layers of the structure.

关 键 词：遗传算法 分级屈服阻尼器 多水准 减震优化 SAP2000 

分 类 号：TU3[建筑科学—结构工程]