基于节点简化理论的带悬臂梁段节点及框架力学性能分析

史震海; 韩明岚; 王燕; 庞宽; 王旭

doi:10.13206/j.gjgS22120501

基于节点简化理论的带悬臂梁段节点及框架力学性能分析

doi: 10.13206/j.gjgS22120501

史震海¹,
韩明岚^2, ,,
王燕¹,
庞宽²,
王旭²

1. 青岛理工大学土木工程学院, 山东青岛 266033;
2. 青岛理工大学理学院, 山东青岛 266033

基金项目:

国家自然科学基金面上资助项目(52078258)。

详细信息

作者简介:
史震海,男,1997年出生,硕士研究生,1405004112@qq.com。

通讯作者:
韩明岚,女,1974年出生,博士,副教授,zihanc@163.com。

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- 文章访问数: 81
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- PDF下载量: 12
- 被引次数: 0
出版历程
- 收稿日期: 2022-12-05
- 网络出版日期: 2023-05-24
- 刊出日期: 2023-03-25

Analysis of Mechanical Properties of Joints and Frames with Cantilevered Beams Based on Joint Simplification Theory

1. School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China;
2. School of Science, Qingdao University of Technology, Qingdao 266033, China

摘要

摘要: 为提高钢框架实体结构有限元数值计算的效率,采用节点简化理论模型对装配式带悬臂梁段嵌入式节点、装配式加强型带悬臂梁段嵌入式节点、传统带悬臂梁段梁柱连接节点以及带悬臂梁段嵌入式栓焊混合节点进行简化,采用ABAQUS有限元软件对4种节点的简化模型、一层一跨框架简化模型以及框架实体模型分别进行静力分析和拟静力分析,将节点简化模型与节点实体模型、框架简化模型与框架实体模型的计算结果进行对比分析。分析结果表明:1)节点简化模型与节点实体模型在单向静力荷载作用下计算得到的节点刚度、屈服荷载以及极限荷载差值较小,两种模型在循环往复荷载作用下计算得到的节点滞回曲线、骨架曲线以及刚度退化曲线等基本一致,节点简化模型可以很大程度上反映出节点实体模型的力学性能。2)单向静力荷载作用下,框架简化模型和框架实体模型计算得到的结构屈服荷载、极限荷载差值较小,在往复循环荷载作用下,两种框架模型计算得到的框架结构承载力、框架刚度、滞回性能以及耗能能力基本一致,计算结果吻合较好。3)采用节点简化模型和框架简化模型对4种带悬臂梁段节点及框架进行相关计算,计算结果具有一定的精度,与采用节点及框架实体模型相比,分析效率提高了95%以上,大大降低了计算成本。
- 节点简化理论 /
- 带悬臂梁段节点 /
- 有限元分析 /
- 承载力 /
- 滞回性能
Abstract: To improve the efficiency of finite element numerical calculation of steel frame solid structure, the simplified theoretical model of joint was used to simplify the assembled embedded joint with cantilever beam, the assembled reinforced embedded joint with cantilever beam, the traditional beam-column connection joint with cantilever beam and the embedded bolt-welded hybrid joint with cantilever beam. The static analysis and pseudo-static analysis of four joint simplified models, one-story one-bay frame simplified model and frame solid model were carried out by ABAQUS finite element software, respectively. The calculation results of joint simplified model and joint solid model were compared and analyzed, and the calculation results of frame simplified model and frame solid model were compared and analyzed. The analysis results showed that:1) the difference of joint stiffness, yield load and ultimate load calculated by the simplified model and the solid model of the joint under unidirectional static load was small. The hysteretic curve, skeleton curve and stiffness degradation curve of the two models under cyclic loading were basically the same. The joint simplified model could reflect the mechanical properties of the joint solid model largely. 2) Under the action of unidirectional static load, the difference between the yield load and ultimate load of the structure calculated by the frame simplified model and the frame solid model was small. Under the action of reciprocating cyclic load, the bearing capacity, frame stiffness, hysteretic performance and energy dissipation capacity of the frame structure calculated by the two frame models were the same basically, and the calculation results were in good agreement. 3) The joint simplified model and the frame simplified model were used to calculate four kinds of joints and frames with cantilever beam. The calculation results had certain accuracy. Compared with the joint and frame solid model, the analysis efficiency of the joint simplified model and the frame simplified model was improved by more than 95%, and the calculation cost was greatly reduced.
- joint simplification theory /
- joint with cantilever beam /
- finite element analysis /
- bearing capacity /
- hysteretic behavior

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参考文献(18)

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