Shake-Table Tests and Numerical Analysis of Steel Frames with Self-Centering Viscous-Hysteretic Devices under the Mainshock-Aftershock Sequences

被引：19

作者：

Zhu, Ruizhao ^{[1
,2
]}

Guo, Tong ^{[3
]}

Tesfamariam, Solomon ^{[2
]}

Xu, Yanqing ^{[4
]}

机构：

[1] Southeast Univ, Sch Civil Engn, Nanjing 210096, Peoples R China

[2] Univ British Columbia, Sch Engn, 3333 Univ Way, Kelowna, BC V1V 1V7, Canada

[3] Southeast Univ, Key Lab Concrete & Prestressed Concrete Struct, Minist Educ, Nanjing 210096, Peoples R China

[4] Nanchang Univ, Sch Civil Engn & Architecture, Nanchang 330031, Jiangxi, Peoples R China

来源：

JOURNAL OF STRUCTURAL ENGINEERING | 2022年 / 148卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Shake-table test; Steel frame; Self-centering viscous-hysteretic device (SC-VHDs); Mainshock-aftershock sequence; Numerical analysis; MOMENT-RESISTING FRAMES; PERFORMANCE EVALUATION; DESIGN;

D O I：

10.1061/(ASCE)ST.1943-541X.0003318

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Shake-table tests, subjected to mainshock-aftershock sequences, were conducted on a 1/3-scaled 3-story steel frame equipped with self-centering viscous-hysteretic devices (SC-VHDs) and its primary frame to investigate the effect of the aftershock on seismic performance. It was found that the SC-VHD can effectively reduce 30%-50% of the peak drift and 50%-80% of the residual drift, respectively. Additionally, the peak and residual drifts of the 3-story primary frame under the mainshock-aftershock sequences were more than those under the mainshock-only sequences, while the peak and residual drifts of the 3-story SC-VHD frame under the mainshock-only and mainshock-aftershock sequences were basically the same. A numerical simulation method for the SC-VHD frame was further developed and validated, based on which 6-, 9-, and 12-story SC-VHD frames were analyzed to investigate the seismic performance of medium- high-rise SC-VHD frames. Both shake-table tests and numerical analysis indicate that the peak and residual drifts of the 3-, 6-, 9-, and 12-story SC-VHD frames can meet the design objective under the mainshock-aftershock sequences.

引用

页数：19