A novel control strategy for reproducing the floor motions of high-rise buildings by earthquake-simulating shake tables

作     者：Yuteng Cao Zhe Qu Xiaodong Ji Yuteng Cao;Zhe Qu;Xiaodong Ji

作者机构：Key Laboratory of Earthquake Engineering and Engineering VibrationInstitute of Engineering MechanicsChina Earthquake AdministrationHarbin150080China Key Laboratory of Earthquake Disaster MitigationMinistry of Emergency ManagementHarbin150080China Key Laboratory of Civil Engineering Safety and Durability of China Education MinistryDepartment of Civil EngineeringTsinghua UniversityBeijing100084China 

出 版 物：《Earthquake Research Advances》 (地震研究进展（英文）)

年 卷 期：2024年第4卷第1期

页      面：67-75页

核心收录：

学科分类：081405[工学-防灾减灾工程及防护工程] 08[工学] 0814[工学-土木工程] 

基　　金：supported by the Natural Science Foundation of China(52122811)。 

主　　题：Shake table test Nonstructural element High-rise building Open-loop IDCS algorithm Off-line iteration 

摘      要：To enable the experimental assessment of the seismic performance of full-scale nonstructural elements with multiple engineering parameters(EDPs),a three-layer testbed named Nonstructural Element Simulator on Shake Table(NEST)has been developed.The testbed consists of three consecutive floors of steel structure.The bottom two floors provide a space to accommodate a full-scale room.To fully explore the flexibility of NEST,we propose a novel control strategy to generate the required shake table input time histories for the testbed to track the target floor motions of the buildings of interest with high accuracy.The control strategy contains two parts:an inverse dynamic compensation via simulation of feedback control systems(IDCS)algorithm and an offline iteration procedure based on a refined nonlinear numerical model of the testbed.The key aspects of the control strategy were introduced in this paper.Experimental tests were conducted to simulate the seismic responses of a full-scale office room on the 21^(st)floor of a 42-story high-rise building.The test results show that the proposed control strategy can reproduce the target floor motions of the building of interest with less than 20%errors within the specified frequency range.