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Seismic response of self-centering prestressed concrete moment resisting frames with web friction devices
Abstract This paper examines the seismic response of self-centering prestressed concrete moment resisting frames (SCPC-MRFs) with web friction devices. Nonlinear dynamic analyses under ground motion ensembles corresponding to two seismic hazard levels are performed. The results of SCPC-MRFs are compared with those of monolithic reinforced concrete (RC) MRFs in terms of global and local responses. Seismic analyses results show that SCPC-MRFs generally experience similar peak story drifts, less beam end rotations, and much smaller residual deformations as compared with those of RC-MRFs. However, it is also found that SCPC-MRFs sustained larger column plastic rotations than RC-MRFs and are more sensitive to the formation of a soft story. In general, the 8-story SCPC-MRFs show better seismic performances than the 4-story ones. Mainshock–aftershock analyses show that the incremental effect of aftershock on damage extent is much smaller for the SCPC-MRFs than for the RC-MRFs.
Highlights Seismic response of novel self-centering (SC) concrete frames is examined. SC frames have less beam end rotations than RC frames. SC frames have larger column plastic rotations than RC frames. SC frames are more sensitive to form a soft story than RC frames. SC frames have less damage than RC frames after the aftershock.
Seismic response of self-centering prestressed concrete moment resisting frames with web friction devices
Abstract This paper examines the seismic response of self-centering prestressed concrete moment resisting frames (SCPC-MRFs) with web friction devices. Nonlinear dynamic analyses under ground motion ensembles corresponding to two seismic hazard levels are performed. The results of SCPC-MRFs are compared with those of monolithic reinforced concrete (RC) MRFs in terms of global and local responses. Seismic analyses results show that SCPC-MRFs generally experience similar peak story drifts, less beam end rotations, and much smaller residual deformations as compared with those of RC-MRFs. However, it is also found that SCPC-MRFs sustained larger column plastic rotations than RC-MRFs and are more sensitive to the formation of a soft story. In general, the 8-story SCPC-MRFs show better seismic performances than the 4-story ones. Mainshock–aftershock analyses show that the incremental effect of aftershock on damage extent is much smaller for the SCPC-MRFs than for the RC-MRFs.
Highlights Seismic response of novel self-centering (SC) concrete frames is examined. SC frames have less beam end rotations than RC frames. SC frames have larger column plastic rotations than RC frames. SC frames are more sensitive to form a soft story than RC frames. SC frames have less damage than RC frames after the aftershock.
Seismic response of self-centering prestressed concrete moment resisting frames with web friction devices
Song, Liang-Long (author) / Guo, Tong (author) / Cao, Zhi-Liang (author)
Soil Dynamics and Earthquake Engineering ; 71 ; 151-162
2015-01-24
12 pages
Article (Journal)
Electronic Resource
English
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