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Rapid Retrofit of Reinforced Concrete Frames after Progressive Collapse to Increase Sustainability

Author

Listed:
  • Shuang Li

    (Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China)

  • Sidi Shan

    (School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China)

  • Haiyu Zhang

    (Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China)

  • Yi Li

    (The Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China)

Abstract

A structural progressive collapse is usually a local failure, in which the damage is concentrated at beams that bridge the removal column and the column itself. In many cases, retrofitting the damaged structure is more economical and more sustainable than reconstructing the entire structure. A progressive collapse test of a 1/3 scale, four-bay by two-story reinforced concrete (RC) frame was conducted, after which the structure was retrofitted with carbon fiber reinforced polymer (CFRP) wraps and retested. The center column in the first story was removed and the frame was pushed down quasistatically under displacement control to investigate the progressive collapse performances of the retrofitted RC frame. The test results were represented systematically at different areas in terms of the resistance forces, crack developments, and local and global failure modes. Numerical models were built to verify the test frame before and after the retrofitting. A design method was proposed to retrofit an RC frame using CFRP wraps after a progressive collapse. The test frame was redesigned to improve the retrofitting and used as an example to demonstrate the rationality of the proposed retrofit design method. The results indicated that the proposed retrofitting technology rapidly restored the frame structure to its original capacity before the progressive collapse occurred, whilst consistently satisfying the priorities of being economical and sustainable.

Suggested Citation

  • Shuang Li & Sidi Shan & Haiyu Zhang & Yi Li, 2019. "Rapid Retrofit of Reinforced Concrete Frames after Progressive Collapse to Increase Sustainability," Sustainability, MDPI, vol. 11(15), pages 1-21, August.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:15:p:4195-:d:254425
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    Cited by:

    1. Emmanouil Golias & Adamantis G. Zapris & Violetta K. Kytinou & George I. Kalogeropoulos & Constantin E. Chalioris & Chris G. Karayannis, 2021. "Effectiveness of the Novel Rehabilitation Method of Seismically Damaged RC Joints Using C-FRP Ropes and Comparison with Widely Applied Method Using C-FRP Sheets—Experimental Investigation," Sustainability, MDPI, vol. 13(11), pages 1-19, June.

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