Advances in Concrete Construction
Volume 22, Number 1, 2026, pages 1-15
DOI: 10.12989/acc.2026.22.1.001
Research on seismic performance of precast recycled aggregate concrete beam-column joints with multi-spiral stirrups
Xiaoping Wang , Chao Wu , Kaifeng Xing
Abstract
Due to the excellent constraint on concrete, the multi-spiral stirrups were used to reinforce precast recycled aggregate concrete (RAC) beam-column joints. Considering the influence of RAC contents and construction methods, a total of six full-scale beam-column joints were designed. The seismic performance, including failure modes, hysteresis characteristics, skeleton curves, energy dissipation, ductility, and beam-column rotations; was discussed through cyclic loads, and the seismic behaviors of precast joints (JP) and cast-in-place joints (JC) were compared. The results showed that the lateral load decreased and the deformation increased when RAC content increased in JP and JC specimens, and these changes were more obvious at the peak load stage. The load capacity and the deformation capacity of JP specimens were reinforced by multi-spiral stirrups. In addition, the design code (GB50010-2010) was used to calculate the joint failure, and the results indicated that the experimental moment values of JC and JP joints were increased by 13.73% and 17.80%, respectively, compared to the designed moment. The capacities of precast RAC beam-column joints with multi-spiral stirrups were higher than those of JC specimens, indicating a sufficient safety margin.
Key Words
multi-spiral stirrups; precast joints; recycled concrete aggregate; seismic performance
Address
- Xiaoping Wang — School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China; School of Architecture and Engineering, Huangshan University, Huangshan 245041, China
- Chao Wu — School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China
- Kaifeng Xing — School of Architecture and Engineering, Huangshan University, Huangshan 245041, China
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