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Volume 55 Issue 5
Oct.  2020
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Article Contents
Journal of Southwest Jiaotong University  > 2020  >  55(5): 1009-1016.
CHEN Weihong, QIAO Zehui, SHOU Weirong. Experimental Study on Seismic Performance of Carbon Fibre Reinforced Plastics-Retrofitted Earthquake-Damaged Non-ductile Reinforced Concrete Frames[J]. Journal of Southwest Jiaotong University, 2020, 55(5): 1009-1016. doi: 10.3969/j.issn.0258-2724.20181068
Citation: CHEN Weihong, QIAO Zehui, SHOU Weirong. Experimental Study on Seismic Performance of Carbon Fibre Reinforced Plastics-Retrofitted Earthquake-Damaged Non-ductile Reinforced Concrete Frames[J]. Journal of Southwest Jiaotong University, 2020, 55(5): 1009-1016. doi: 10.3969/j.issn.0258-2724.20181068
shu

Experimental Study on Seismic Performance of Carbon Fibre Reinforced Plastics-Retrofitted Earthquake-Damaged Non-ductile Reinforced Concrete Frames

doi: 10.3969/j.issn.0258-2724.20181068
  • Received Date: 12 Dec 2018
  • Rev Recd Date: 03 Apr 2019
    • Available Online: 13 Apr 2019
  • Publish Date: 01 Oct 2020
    Abstract
  • To investigate the seismic performance of earthquake-damaged non-ductile reinforced concrete (RC) frames retrofitted with carbon fiber reinforced polymer (CFRP), two pseudo-static tests were conducted on a 1/2 scale two-span and two-story specimen before and after its CFRP reinforcement. After the RC frame was loaded to its peak bearing capacity, specimens with seismic damaged parts strengthened with external CFRP textile were studied experimentally to obtain their failure modes and hysteretic curves. The seismic performance indexes of the CFRP-retrofitted frame, such as stiffness, strength, ductility and energy consumption, were analyzed and compared with the initial intact frame. The results show that the external CFRP reinforcement has no significant influence on the lateral strength and initial stiffness of the earthquake-damaged non-ductile RC frame, but the energy dissipation capacity of the retrofitted RC frame is obviously improved. The average displacement ductility factor of retrofitted RC frame is 2.81. When the maximum story drift ratio reaches 1/50, the retrofitted RC frame still has a large safety margin. The retrofitted earthquake-damage non-ductile RC frames can be used in seismic areas.

     

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