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Numerical study on seismic performance of prefabricated steel frames with recentering energy dissipative braces
Highlights Seismic performances of RCED braced frames are numerically investigated. Quasistatic and time history analyses are performed. The dynamic behaviors of RCED and SCED braced frames under various earthquakes are compared. A parametric study on the RCED model is performed.
Abstract The application and research of prefabricated steel structures (PPSs) have developed rapidly in China. To improve the seismic resistance of PPSs, alternative bracing systems have been developed. The seismic performance of steel frames with recentering energy dissipative (RCED) braces is investigated numerically through quasistatic and nonlinear time history analyses. A one-bay braced frame model was first created in ABAQUS and calibrated by previous experimental tests. Subsequently, a comparative study on the dynamic performances of the multistory steel frames with RCED braces and self-centering energy dissipative braces was conducted. Six far-field earthquake records were adopted, i.e., Northridge, Imperial Valley, Kobe, San Fernando, Loma Prieta, and Kocaeli, Turkey. Finally, a parametric study was performed to investigate the effects of tendon diameter and pretension magnitude of high-strength bolts on the seismic performances of the RCED model under the Kocaeli earthquake.
Numerical study on seismic performance of prefabricated steel frames with recentering energy dissipative braces
Highlights Seismic performances of RCED braced frames are numerically investigated. Quasistatic and time history analyses are performed. The dynamic behaviors of RCED and SCED braced frames under various earthquakes are compared. A parametric study on the RCED model is performed.
Abstract The application and research of prefabricated steel structures (PPSs) have developed rapidly in China. To improve the seismic resistance of PPSs, alternative bracing systems have been developed. The seismic performance of steel frames with recentering energy dissipative (RCED) braces is investigated numerically through quasistatic and nonlinear time history analyses. A one-bay braced frame model was first created in ABAQUS and calibrated by previous experimental tests. Subsequently, a comparative study on the dynamic performances of the multistory steel frames with RCED braces and self-centering energy dissipative braces was conducted. Six far-field earthquake records were adopted, i.e., Northridge, Imperial Valley, Kobe, San Fernando, Loma Prieta, and Kocaeli, Turkey. Finally, a parametric study was performed to investigate the effects of tendon diameter and pretension magnitude of high-strength bolts on the seismic performances of the RCED model under the Kocaeli earthquake.
Numerical study on seismic performance of prefabricated steel frames with recentering energy dissipative braces
Ye, Quanxi (author) / Wang, Zongyi (author) / Wang, Yuanqing (author)
Engineering Structures ; 207
2020-01-12
Article (Journal)
Electronic Resource
English
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