Role of dampers on the seismic performance of pin-supported wall-frame structures  

作　　者：Wang Xiaoyue Qu Zhe Gong Ting 

机构地区：[1]Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Sanhe 065201,China [2]Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Harbin 150080,China [3]China Re Catastrophe Risk Management Company Ltd.,Beijing 100000,China

出　　处：《Earthquake Engineering and Engineering Vibration》2023年第2期453-467,共15页地震工程与工程振动（英文刊）

基　　金：National Natural Science Foundation of China under Grant No.51878629。

摘　　要：Pin-supported(PS)walls have been proven effective in avoiding weak story failure of frame structures by increasing the height-wise continuous stiffness and producing uniform distribution of story drifts.However,little attention has been given to the floor velocity or acceleration responses of PS wall-frame structures,which predominate the seismic damage of various nonstructural components that are critical to the immediate occupancy and quick recovery of buildings.This paper presents a numerical evaluation of the floor velocity and acceleration responses of PS wall-frame structures,highlighting the effects of different types of dampers accompanying the PS walls.The results show that the PS walls alone significantly increase the peak floor velocity(PFV)and peak floor acceleration(PFA)responses.PS wall-frame structures with either steel or viscoelastic(VE)dampers are much less effective in reducing the PFV or PFA responses than they are in reducing the peak inter-story drift ratio(PIDR).The impact of this behavior is demonstrated by a seismic fragility analysis that incorporates demand parameters combining the maximum PIDR,average PFV and PFA.The results show that the use of VE dampers rather than hysteretic dampers results in better protection of nonstructural components in PS wall-frame structures.

关 键 词：strong spine system energy-dissipating device floor acceleration floor velocity nonstructural damage 

分 类 号：TU352.11[建筑科学—结构工程]