摘要
提出一种新型多行开缝低屈服点钢板(multirow slit low-yield-point steel plate,MSSP)的减震阻尼器。基于低屈服点Q160钢试验数据和ABAQUS有限元模拟,进行了MSSP和未开缝低屈服点钢板阻尼器的性能比较。通过MSSP数值计算分析,给出了MSSP参数的适用范围以及屈服承载力的理论修正公式;同时,研究了MSSP多排缝的存在条件和MSSP滞回性能。经对8度罕遇地震作用下安装Q160MSSP多层钢框架结构的动力弹塑性时程分析,在时域内进一步验证了MSSP对钢框架结构减震的有效性。
This paper presents a new seismic damper—the multirow slit low-yield-point steel plate,referred to as the MSSP.Based on both experimental data of Q160 steel and numerical simulation using ABAQUS,the comparison of damping performance is presented between MSSP and non-slotted low-yield-point steel plate.Through the numerical analysis of MSSP,the applicable range of MSSP parameters and the theoretical correction formula of yield bearing capacity are provided.Also,an investigation is conducted for the existence conditions of multirow slits in the MSSP and the hysteretic behavior of MSSP.The seismic responses of a multi-story steel frame structure with Q160 MSSPs under the8 degree rare earthquakes are analyzed using dynamic elastic-plastic time-history analysis to check the aseismic effectiveness of MSSP to structure.
作者
于志强
汪呈
李春祥
YU Zhiqiang;WANG Cheng;LI Chunxiang(College of Civil Engineering,Hunan University,Changsha 410082,China;Department of Civil Engineering,Shanghai University,Shanghai 200444,China)
出处
《建筑钢结构进展》
CSCD
北大核心
2020年第1期101-109,共9页
Progress in Steel Building Structures
关键词
多行开缝低屈服点钢板
试验数据
数值模拟
屈服承载力
动力弹塑性时程分析
multirow slit low-yield-point steel plate
experimental data
numerical simulation
yield bearing capacity
dynamic elastic-plastic time-history analysis
