Experimental and analytical research on the seismic performance of CEEP joint
STRUCTURES(2024)
摘要
In this paper, the seismic performance of two cruciform extended end-plate (CEEP) joints was investigated through experimental and theoretical analysis methods. The low-frequency cyclic loading experiments were performed on the joints, and the failure modes, M -theta curves, strain distributions, and seismic performance indices, including hysteretic behaviors, skeleton curves, ductility coefficients, stiffness degradation, and energy dissipation coefficients, were obtained and compared. Experimentally-validated FEMs were applied to quantitatively investigate the specific effects of column web thickness, end-plate thickness, and bolt diameter on the joint performance. The critical stiffness value of rigid and semi-rigid joints was proposed based on the failure modes, FE results and initial stiffness, and it was demonstrated that the two joints were a semi-rigid and a rigid joint, respectively. The FE results showed that for the semi-rigid joints, increasing the column web thickness was the most effective method to improve the stiffness. For the rigid joints, increasing the end plate thickness was a cost-effective method to enhance the stiffness. A theoretical method to evaluate the initial stiffness of the CEEP joints was proposed, and the accuracy of the method was testified.
更多查看译文
关键词
CEEP joint,Seismic performance,FE analysis,Critical stiffness,Theoretical method
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要