基于模态参与消减的直连拉索连接惯容系统的简易算法  

Study on a simple design method for direct connected cable inerter system based on modal participation cancellation

作　　者：谢丽宇 班鑫磊 康建飞 薛松涛[1,4] XIE Liyu;BAN Xinlei;KANG Jianfei;XUE Songtao(College of Civil Engineering,Tongji University,Shanghai 200092,China;Shanghai Electric Power Design Institute Co.,LTD.,Shanghai 200025,China;International Research Institute of Disaster Science,Tohoku University,Sendai 980-8572,Japan;Department of Architecture,Tohoku Institute of Technology,Sendai 982-8577,Japan)

机构地区：[1]同济大学土木工程学院,上海200092 [2]上海电力设计院有限公司,上海200025 [3]日本东北大学灾害科学国际研究所,宫城仙台980-8572 [4]日本东北工业大学建筑系,宫城仙台982-8577

出　　处：《地震工程与工程振动》2022年第6期104-113,共10页Earthquake Engineering and Engineering Dynamics

基　　金：政府间国际科技创新合作重点专项(2021YFE0112200);上海市自然科学基金项目(20ZR1461800)。

摘　　要：高层建筑各层加速度响应峰值往往受到高阶模态的影响,文中通过模态参与消减机制来探究高层结构的模态参与因子对结构振动响应的影响,旨在消除高阶模态的影响,为实现高层建筑结构层间位移和加速度的同步控制提供新的设计方案。首先,基于地震输入减少特性,总结了直连拉索连接惯容系统的控制特点;然后,推导了基于模态参与消减的直连拉索连接惯容系统解析设计公式,从解析的层面揭示了惯容的表观质量与各阶模态参与因子的关系。基于该公式通过惯容表观质量的合理设定可以对模态参与因子进行调节,为拉索连接惯容系统的简化参数设计提供依据;最后,文中提出了全模态参与消减的简易算法,解决了全模态参与消减的惯容系统的实用化设计问题。The peak acceleration response of each story of high-rise building is often affected by higher modes. In this paper,the influence of modal participation factor of high-rise structure on structural vibration response is explored based on modal participation cancellation,aiming to neutralize the influence of higher modes and provide a new design method for the synchronous control of peak displacement and acceleration response of high-rise buildings. Firstly,the control characteristics of the direct connected cable inerter system are summarized based on the input reduction characteristics. Then,the analytical design formula for the parameters of the inerter system is derived based on the modal participation cancellation,and the relationship between the apparent mass of inerter element and the modal participation factors of each order is revealed theoretically. The modal participation factors can be adjusted through the reasonable setting of the apparent mass of the inerter element,which provides the basis for the simplified design of the direct connected cable inerter system. Finally,this paper proposes a simple design method of full-mode participation cancellation,which solves the practical design problem of the direct connected cable inerter system.

关 键 词：模态参与消减 惯容系统 拉索连接 被动控制技术 

分 类 号：TU318.1[建筑科学—结构工程]