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In order to research the seismic performance of earthquake-damaged reinforced concrete circular column repaired rapidly with composite repair technique of near-surface-mounted basalt fiber reinforced concrete (BFRP) rebars and wrapped BFRP sheets (BFRP rebars-sheets composite repair technique), four reinforced concrete circular columns which were rapidly repaired within 4 or 5 days, were tested under low reversed cyclic loading. And the seismic performance of repaired reinforced concrete circular columns with different contents of embedded BFRP bars and different layers of BFRP sheets was obtained from experiment. Based on the experimental data, the ductility, energy dissipation, bearing capacity, stiffness degradation of repaired columns were compared with the original ones. The results show that all the repaired specimens have similar energy dissipation and ductility, higher bearing capacity compared with the original ones. Furthermore, the stiffness of repaired specimens is recovered, and the bearing capacity is increased with the increase of the displacement applied to the specimens, namely the post-yielding stiffness. However, the value of post-yielding stiffness of repaired columns has the direct relation with the amount of BFRP bars and sheets, and the better post-yielding stiffness of repaired specimens with the ratio λ (reinforcement ratio of embedded BFRP bars vs. volume fraction of BFRP sheets) in the range of 1.80-1.92 can be achieved to reduce the residual displacement. ©, 2015, Science Press. All right reserved.
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Journal of Building Structures
ISSN: 1000-6869
CN: 11-1931/TU
Year: 2015
Issue: 8
Volume: 36
Page: 58-65
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count: 1
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
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