考虑SSI效应时TMD的减震优化设计  

Optimum Design of TMD under Earthquake Excitation Considering Soil-Structure Interaction

作　　者：刘书童 张晋 谢金伦 杨树桐[1] 李培振[2] LIU Shutong;ZHANG Jin;XIE Jinlun;YANG Shutong;LI Peizhen(Department of Civil Engineering,College of Engineering,Ocean University of China,Qingdao 266400,China;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]中国海洋大学工程学院,青岛266400 [2]同济大学土木工程防灾减灾全国重点实验室,上海200092

出　　处：《结构工程师》2024年第5期45-55,共11页Structural Engineers

基　　金：国家自然科学基金青年项目(52208510);山东省自然科学基金青年项目(ZR2022QE260)。

摘　　要：土-结构相互作用(SSI)效应可能会对地震作用下调谐质量阻尼器(TMD)的有效性产生重要影响,因此本文研究了考虑SSI效应时TMD对高层建筑的抗震控制性能。针对一个质量分布均匀、层刚度随高度呈线性分布的40层benchmark结构,以结构顶层均方根位移最小为优化目标,采用改进粒子群算法对其在不同地基土条件以及地震波激励下的调谐质量阻尼器参数进行优化设计。优化结果表明,忽略SSI效应可能会造成地震激励下高层结构中TMD减震性能的不恰当估计,TMD的优化参数与地基土类型和地震波种类紧密相关。优化后的TMD可以有效降低结构顶层位移响应且不增加其峰值加速度,优化后的TMD耗散了绝大部分地震输入能量,并大大降低了结构能量。Soil-structure interaction(SSI)effects may play significant roles in TMD’s effectiveness under earthquake excitations.Therefore,the seismic control performance of TMD for tall buildings considering SSI effects are investigated in this paper.A new optimization method for the seismic design of TMD is proposed in this paper,based on the improved particle swarm optimization algorithm.A 40-story benchmark structure with a uniform mass distribution and a linear stiffness distribution along its height is adopted as the superstructure.The optimization goal is to minimize the root mean square displacement of the top layer under different soil types subjected to earthquake excitations.The results showed that,ignoring the soil-structure interaction effects may result in an inappropriate estimation of the seismic responses and the seismic control performance of TMD for high-rise structure.The optimal parameters of TMD are closely related to the soil type and seismic wave.The optimized TMD can effectively decrease the displacement response of the top floor without the increase of peak acceleration.The optimized TMD dissipates the overwhelming majority of the input energy,and it greatly decreases the structural energy.

关 键 词：土与结构相互作用 调谐质量阻尼器 优化设计 减震控制 地震响应分析 

分 类 号：TU352.1[建筑科学—结构工程]