Plastic hinge length of precast beam-column connections with U-shaped shells and anchored bottom longitudinal bars in beams

被引：0
|
作者：
Guan D. [1 ,2 ]
Guo Z. [1 ,2 ]
Yang S. [1 ]
Yang H. [1 ]
Jiang H. [1 ]
机构：
[1] School of Civil Engineering, Southeast University, Nanjing
[2] The Key Laboratory of C & PC Structures of China Ministry of Education, Southeast University, Nanjing
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2019年 / 40卷 / 09期
关键词：
Beam-column connection; Calculation model; Cyclic loading test; Plastic hinge; Precast concrete;
D O I：
10.14006/j.jzjgxb.2017.0438
中图分类号：
学科分类号：
摘要：
Considering the mechanical characteristics of concrete components under low-cyclic loadings, the definition of tension-compression plastic hinge length was put forward. Through low-cyclic loading tests, the characteristics of plastic hinges of new precast beam-column connections with U-shaped shells and anchored bottom longitudinal bars in beams were studied, and experimental results of tension-compression plastic hinge length were obtained. Based on the Panagiotakos model, a modified plastic hinge length model was proposed, involving local confinement of concrete, prefabricating details and reinforcement ratios. The results show that the tension-compression plastic hinge length can reflect the damage of plastic hinge regions under low-cyclic loadings. The plastic hinges of precast beam-column connections with U-shaped shells and anchored bottom longitudinal bars in beams have some minor difference from monolithic connections. The modified plastic hinge length model can be used to well evaluate the tension-compression plastic hinge length of this connection. © 2019, Editorial Office of Journal of Building Structures. All right reserved.
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页码：140 / 147
页数：7
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