Experimental Research on Seismic Performance of Self-centering Prefabricated RC Frame Structures

LIU Hang; LI Mu; YANG Xuezhong; HAN Mingjie; TIAN Yuji

doi:10.13204/j.gyjzG21062601

Volume 52 Issue 1

Apr. 2022

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LIU Hang, LI Mu, YANG Xuezhong, HAN Mingjie, TIAN Yuji. Experimental Research on Seismic Performance of Self-centering Prefabricated RC Frame Structures[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 65-73. doi: 10.13204/j.gyjzG21062601

Citation:

LIU Hang, LI Mu, YANG Xuezhong, HAN Mingjie, TIAN Yuji. Experimental Research on Seismic Performance of Self-centering Prefabricated RC Frame Structures[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 65-73. doi: 10.13204/j.gyjzG21062601

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Experimental Research on Seismic Performance of Self-centering Prefabricated RC Frame Structures

doi: 10.13204/j.gyjzG21062601

1. Beijing Building Construction Research Institute Co., Ltd., Beijing 100039, China;
2. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

Received Date: 2021-06-26
Available Online: 2022-04-24

Abstract

Abstract

A new self-centering prefabricated RC frame structure was proposed. Two single-floor and one-bay frame specimen were designed and constructed, including one cast-in-situ concrete frame and one new type of prefabricated RC frame. Two quasi-static tests were carried out for the self-centering prefabricated RC frame specimen, and the second test was carried out after the completion of the first test and the energy-dissipation rebars of the structure were replaced. The results showed that the bearing capacity and energy-dissipation capacity of the new prefabricated RC frame was slightly lower than the conventional concrete frame, but the ductility was enhanced substantially compared with the conventional concrete frame. When the drift ratio was larger than 1/50, the bearing capacity of the prefabricated RC frame still did not decrease. The residual deformation of the new prefabricated RC frame after the first quasi-static test was approximately 15% of that of the cast-in-situ concrete frame. The damage degree of the components was slight and the self-centering performance of the structure could be achieved. The bearing capacity of the new prefabricated RC frame in the second test was decreased slightly, and the residual deformation was larger compared with the results of first test. The self-centering performance still existed, and the damage degree of component was still slight. It could be shown that the seismic performance of the new self-centering prefabricated RC frame could be basically restored through the simple replacement of the energy-dissipation rebar.
- self-centering,
- prefabricated concrete frame,
- quasi-static test,
- unbonded prestressed tendons,
- energy-dissipation rebar

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References(15)

References

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