Analysis of seismic performance of high strength steel composite K-eccentrically braced frames

被引：0
|
作者：
Tian X. [1 ]
Su M. [2 ]
Li S. [3 ]
Song D. [4 ]
机构：
[1] School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an
[2] School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an
[3] School of Civil Engineering and Architecture, Xi'an University of Technology, Xi'an
[4] Northwest Engineering Corporation Limited, Xi'an
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 12期
关键词：
Eccentrically brace; High-strength steel; IDA; Seismic performance; Storey drift angel;
D O I：
10.13465/j.cnki.jvs.2020.12.013
中图分类号：
学科分类号：
摘要：
To evaluate the seismic performance of high-strength steel composite eccentrically braced frames (K-HSS-EBFs), a 20-story K-HSS-EBF was designed, and Incremental dynamic analysis (IDA) was carried out with 10 seismic ground motions. The weak parts of the structure, the formation and development of the plastic zones of the link and the relationship between deformation of link and maximum story drift under the action of strong earthquakes were investigated. The IDA curves of 10%, 50%, and 90% fractiles and the displacement ductility coefficient were obtained. The seismic performance was assessed by combining the defined performance parameters. The results show that with the increase in the peak ground acceleration, the links successively entered the plastic state and absorbed the seismic energy. The collapse fragility curve can reflect the seismic performance of the K-HSS-EBFs. The K-HSS-EBFs designed according to the current code have negligible risk of collapse and high security reserve, which is more conserved and leads to cost waste. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：95 / 102
页数：7
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