Experimental investigation of prefabricated buckling-restrained steel coupling beam with modified buckling-restrained RC panel

被引：0
作者：
Li, Zuohua [1 ,2 ]
Ge, Lei [1 ,2 ]
Qi, Yihe [1 ,2 ]
Miao, Jiayuan [1 ,2 ]
Teng, Jun [1 ,2 ]
机构：
[1] Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China
[2] Guangdong Prov Key Lab Intelligent & Resilient Str, Shenzhen 518055, Peoples R China
来源：
STRUCTURES | 2025年 / 72卷
关键词：
Buckling-restrained steel coupling beam; Precast reinforced concrete panel; Concrete connecting segment; Seismic performance; Quasi-static test; SEISMIC BEHAVIOR; PLATE; PERFORMANCE; TESTS;
D O I：
10.1016/j.istruc.2025.108252
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A prefabricated buckling-restrained steel coupling beam (PBRSCB) with improved energy dissipation capacity for shear wall structure is proposed in this study. The PBRSCB comprise a steel plate and two modified buckling- restrained reinforced concrete panels with concrete connecting segment (CCS) and concrete restraining segment (CRS). The PBRSCB have a two-stage force mechanism under cyclic loading. The buckling-restrained reinforced concrete panels and steel plate provide combined initial stiffness of PBRSCB in the first stage of force mechanism. The CCSs of buckling-restrained reinforced concrete panels fail in the second stage of the force mechanism. The remaining CRSs inhibit the buckling of steel plate. Meanwhile, the steel plate yield from the ends to the middle, providing the ultimate bearing and energy dissipation capacity for the PBRSCB. Therefore, the initial stiffness and energy dissipation capacity of the PBRSCB can be improved by the design of the two-stage force mechanism and the yield sequence of steel plate. Two PBRSCB specimens and a conventional steel plate- reinforced concrete coupling beam (SPRCCB) specimen were tested to study their seismic performance. Test results showed that the PBRSCB had 21.61 % greater bearing capacity and 2.58 times higher ductility factors than SPRCCB, and the energy dissipation capacities of the PBRSCBs were at least 49.32 % higher than that of the SPRCCB at a drift ratio of 3.11 %.
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页数：13
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