Modeling on collapse behaviour of high-rise concrete-filled steel composite frames under over-design seismic excitations
Modeling on collapse behaviour of high-rise concrete-filled steel composite frames under over-design seismic excitations
复制标题
超设计地震激励下高层钢混凝土组合框架倒塌行为建模
DOI：
10.1080/15732479.2017.1303841
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发表时间：
2017-04
影响因子：
3.7
通讯作者：
Bai YT
中科院分区：
文献类型：
--
作者：
Bai Yongtao;Wang Jiantao;Sun Qing;Hu Hongsong;Bai YT
Abstract This paper presents a numerical study on seismic collapse capacity of high-rise concrete-filled steel tubular moment resisting frames (CFT-MRFs) under extreme ground motions that are beyond the design levels. The ground motions characterised as flat velocity spectral shape were selected to neglect record-to-record uncertainty induced by the changing of the natural periods of structures. A simple numerical approach was developed using fibre element with stiffness and strength degradation accounted in stress–strain models. Then, incremental dynamic analyses with various parameters were performed to evaluate the P-Delta and degradation effects on local and global collapse mechanisms. Results have shown that a drift concentration at the lower stories triggered the side-sway collapse mode that was dominated by the post-buckling strength degradation of CFT columns. The height of drift concentration indicates the range where the collapse mechanism was formed, and a drift concentration factor was proposed to estimate the extent of drift concentration. Last, a factor indicating the safety margin under collapse was computed based on the probability of earthquake occurrence.
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影响因子：
4.1
作者：
Lin-Hai Han;Wei Li;Y. Yang
通讯作者：
Lin-Hai Han;Wei Li;Y. Yang
DOI：
10.1061/(asce)0733-9445(1988)114:8(1804
发表时间：
1988-08-01
期刊：
JOURNAL OF STRUCTURAL ENGINEERING-ASCE
影响因子：
--
作者：
MANDER, JB;PRIESTLEY, MJN;PARK, R
通讯作者：
PARK, R
DOI：
10.3130/aijsx.444.0_135
发表时间：
1993
期刊：
Journal of Structural and Construction Engineering (transactions of Aij)
影响因子：
--
作者：
S. Yamada;H. Akiyama;H. Kuwamura
通讯作者：
S. Yamada;H. Akiyama;H. Kuwamura
影响因子：
4.5
作者：
L. Ibarra;R. Medina;H. Krawinkler
通讯作者：
L. Ibarra;R. Medina;H. Krawinkler
DOI：
10.1061/(asce)0733-9445(2004)130:2(169
发表时间：
2004-02
期刊：
Journal of Structural Engineering-asce
影响因子：
--
作者：
A. Varma;J. Ricles;R. Sause;Le-wu Lu
通讯作者：
A. Varma;J. Ricles;R. Sause;Le-wu Lu