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[1]郑 宏,杨瑞鹏,戴永超,等.装配式梁翼缘侧板加强-狗骨式削弱节点滞回性能及变参研究[J].建筑科学与工程学报,2020,37(05):88-96.[doi:10.19815/j.jace.2019.08011]
　ZHENG Hong,YANG Rui-peng,DAI Yong-chao,et al.Study on Hysteretic Behavior and Variable Parameters of Prefabricated Beam Flange Side Plate Strengthened Dog Bone Weakened Joint[J].Journal of Architecture and Civil Engineering,2020,37(05):88-96.[doi:10.19815/j.jace.2019.08011]
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装配式梁翼缘侧板加强-狗骨式削弱节点滞回性能及变参研究(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
37卷
期数:
2020年05期
页码:
88-96
栏目:
出版日期:
2020-09-30

文章信息/Info

Title:
Study on Hysteretic Behavior and Variable Parameters of Prefabricated Beam Flange Side Plate Strengthened Dog Bone Weakened Joint
文章编号:
1673-2049(2020)05-0088-09
作者:
郑 宏,杨瑞鹏,戴永超,郁曙光
长安大学 建筑工程学院,陕西 西安 710061
Author(s):
ZHENG Hong, YANG Rui-peng, DAI Yong-chao, YU Shu-guang
School of Civil Engineering, Chang’an University, Xi’an 710061, Shaanxi, China
关键词:
侧板加强;  狗骨式削弱;  抗震性能;  滞回性能
Keywords:
side plate strengthening;  dog bone weakening;  seismic performance;  hysteretic property
分类号:
TU391
DOI:
10.19815/j.jace.2019.08011
文献标志码:
A
摘要:
提出一种新型装配式梁翼缘侧板加强-狗骨式削弱节点,利用有限元软件ABAQUS对其进行静力和拟静力加载分析; 在此基础上对该新型节点进行系列参数分析,设计了端板厚度td、梯形侧板末端斜边在梁长度方向的尺寸lt、削弱区削弱深度c共3个变参数系列试件,探究各参数对节点滞回性能的影响,并给出设计参考建议。结果表明:在静力加载过程中,节点在梁端削弱区产生大量塑性变形,形成塑性铰破坏,该种破坏形式属延性破坏; 在拟静力加载过程中,节点滞回曲线饱满,表现出良好的耗能能力; 端板厚度td对节点滞回性能影响较大,对塑性铰的形成位置起决定作用,建议端板厚度td的取值为tf≤td≤1.5tf(tf为柱翼缘厚度); 梯形侧板末端倾斜角度lt对节点的承载能力和耗能性能有较大影响,建议倾斜角度的正切值取值为0.27≤tan(θ)≤0.59(θ为侧板末端角度); 削弱区削弱深度c影响着节点的承载力和延性系数等多项指标,削弱深度的取值应该综合考虑承载力和耗能能力2种性能的影响,建议削弱深度的取值为0.18bf≤c≤0.25bf(bf为梁翼缘宽度)。
Abstract:
A new type of prefabricated beam flange side plate strengthened dog bone weakened joint was proposed, and the static and quasi-static loading analyses were carried out by using the finite element software ABAQUS. On this basis, a series of parameters of the new joints were analyzed, and three variable parameter series were designed, including the thickness of end plate td, the inclination length of trapezoidal side plate end lt, and the weakening depth of weakening zone c. The Influence of each parameter on the hysteretic performance of the joint was explored, and the design reference suggestions were given. The results show that in the process of static loading, a large amount of plastic deformation occurs in the weakening area of beam end and forms plastic hinge failure, which belongs to ductile failure; in the process of quasi-static loading, the hysteretic curve of the joint is full, which shows good energy dissipation capacity. The thickness of end plate td has a great influence on the hysteretic behavior of the joint, and plays a decisive role in the formation of the plastic hinge. It is suggested that the value of the end plate thickness td is tf≤td≤1.5tf(tf is the thickness of the column flange). The inclination angle of the trapezoidal side plate has a great influence on the bearing capacity and energy dissipation performance of the joint. The tangent value of the inclination angle is suggested to be 0.27≤tan(θ)≤0.59(θ is the end angle of the side plate). The influence of bearing capacity and energy dissipation capacity should be taken into account in the value of weakening depth c, and the value of weakening depth is suggested to be 0.18bf≤c≤0.25bf(bf is the width of beam flange).

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相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2019-12-26
基金项目:国家自然科学基金项目(51278061); 中央高校基本科研业务费专项资金项目(310828175002)
作者简介:郑 宏(1964-),男,黑龙江哈尔滨人,教授,博士研究生导师,工学博士,博士后,E-mail:cehzheng@chd.edu.cn。
更新日期/Last Update: 2020-10-15