Seismic performance of circular columns from an existing RC building constructed in 1969
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Bibliographic Details
| Author(s): |
Hideo Araki
(Hiroshima Institute of Technology, Hiroshima, JAPAN)
Kazushi Sadasue (Hiroshima Institute of Technology, Hiroshima, JAPAN) Eisuke Sakamoto (Hiroshima Institute of Technology, Hiroshima, JAPAN) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Resilient technologies for sustainable infrastructure, Christchurch, New Zealand, 3-5 February 2021 | ||||
| Published in: | IABSE Congress Christchurch 2020 | ||||
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| Page(s): | 1257-1264 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/christchurch.2021.1257 | ||||
| Abstract: |
Experimental work was performed using two circular columns taken from a reinforced concrete (RC) building constructed in 1969. The diameter of each column was 550 mm, and the average concrete strength obtained from the material tests was 11.3N/mm². The columns were subjected to reversal loading with displacement control under constant axial load to evaluate the validity of the equations currently used for seismic evaluation. The damaged columns were repaired with epoxy resin injection to investigate the effect of repairs after earthquake events. The final collapse mechanism was the shear failure mode after flexural yielding. The maximum strength of the retrofitted columns was approximately 1.1 times that of the original columns. Three-dimensional nonlinear finite element analysis was conducted using ‘‘FINAL’’. The minimum principal stress of the circular columns with low-strength concrete was also examined. |
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| Keywords: |
seismic performance retrofitting existing building FEM analysis circular RC column low strength concrete
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