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A platform for research: civil engineering, architecture and urbanism
Seismic Performance of RC Frame-Shear Wall Structure with Replaceable Coupling Beams
Abstract Traditional reinforced concrete (RC) coupling beams in a RC shear wall system will suffer severe damage which is repaired hardly or costly when the structure system is subjected to the strong earthquake. In this study, a new kind of coupling beam is proposed, which could be replaced conveniently after the earthquake. The new coupling beam is composed of non-replaceable part and replaceable part. The non-replaceable part is made of reinforced concrete and keeps elastic during earthquakes. The replaceable part, consisting of I-shaped steel beam with multiple low-yield-point steel webs paralleled to each other, could yield firstly and dissipate large portion of input energy prior to its failure. The replaceable part is connected to non-replaceable part by bolts so that it can be replaced conveniently after the earthquake. To verify the seismic performance of the new replaceable coupling beams, a case study was carried out. Two RC frame-shear wall structures, one with traditional coupling beams, the other with the new replaceable coupling beams, were designed. The numerical models for two structures were established with the aid of commercial software Perform-3D. The responses of two structures under rare earthquake were analyzed and compared. The results show that the replaceable parts yield firstly, the damage of the new coupling beams concentrates on the replaceable parts, and the non-replaceable parts keep elastic even in the rare earthquake while the traditional coupling beams are damaged seriously. Compared with the structure with traditional coupling beams, the seismic performance of the structure with replaceable coupling beams is improved significantly.
Seismic Performance of RC Frame-Shear Wall Structure with Replaceable Coupling Beams
Abstract Traditional reinforced concrete (RC) coupling beams in a RC shear wall system will suffer severe damage which is repaired hardly or costly when the structure system is subjected to the strong earthquake. In this study, a new kind of coupling beam is proposed, which could be replaced conveniently after the earthquake. The new coupling beam is composed of non-replaceable part and replaceable part. The non-replaceable part is made of reinforced concrete and keeps elastic during earthquakes. The replaceable part, consisting of I-shaped steel beam with multiple low-yield-point steel webs paralleled to each other, could yield firstly and dissipate large portion of input energy prior to its failure. The replaceable part is connected to non-replaceable part by bolts so that it can be replaced conveniently after the earthquake. To verify the seismic performance of the new replaceable coupling beams, a case study was carried out. Two RC frame-shear wall structures, one with traditional coupling beams, the other with the new replaceable coupling beams, were designed. The numerical models for two structures were established with the aid of commercial software Perform-3D. The responses of two structures under rare earthquake were analyzed and compared. The results show that the replaceable parts yield firstly, the damage of the new coupling beams concentrates on the replaceable parts, and the non-replaceable parts keep elastic even in the rare earthquake while the traditional coupling beams are damaged seriously. Compared with the structure with traditional coupling beams, the seismic performance of the structure with replaceable coupling beams is improved significantly.
Seismic Performance of RC Frame-Shear Wall Structure with Replaceable Coupling Beams
Li, Shurong (author) / Jiang, Huanjun (author)
2017-08-06
10 pages
Article/Chapter (Book)
Electronic Resource
English
| SAGE Publications | 2019
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