Application of a negative stiffness device in the benchmark problem for a base isolated building
This paper presents a novel negative stiffness device(NSD)for the seismic protection of the base isolated benchmark building in near fault earthquake.The benchmark structure has eight stories and irregular plan,and the superstructure is considered to be a linear elastic system with lateral torsional behavior.Furthermore it is equipped with low damping elastomeric rubber bearings and viscous dampers for seismic protection.The proposed NSD can change the stiffness of composite structure-device assembly,emulate “apparent weakening of the structure system without permanent deformations.It consists of a highly compressed spring,a wheel and a curved template that the wheel can roll on.The device can achieve any force-displacement behavior within its designed range.Experimental results are presented to verify the analytical model of the NSD.Numerical simulation results under seven earthquake inputs show that the proposed device is effective in reducing the response of the base and superstructure in comparison with a sample clipped optimal controller and an H/LQG sample controller.
smart base isolation benchmark problem negative stiffness device seismic response control
Tong Sun Zhilu Lai Satish Nagarajaiah Hong-Nan Li
Department of Civil Engineering,Shenyang Jianzhu University,Shenyang,China Dept.of Civil and Environment Engineering,Rice University,Houston,America
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
894-904
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）