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.

引用

页码：140 / 147

页数：7