装配式钢管混凝土叠合柱单边螺栓连接节点设计方法及其框架抗震性能

胡子明; 郭磊; 王静峰; 廖飞宇

doi:10.3724/j.gyjzG23103111

装配式钢管混凝土叠合柱单边螺栓连接节点设计方法及其框架抗震性能

doi: 10.3724/j.gyjzG23103111

胡子明^1,3,
郭磊²,
王静峰^1,2, ,,
廖飞宇⁴

1. 合肥工业大学土木与水利工程学院, 合肥 230009;
2. 水泥基材料低碳技术与装备教育部工程研究中心, 合肥 230009;
3. 土木工程结构与材料安徽省重点实验室, 合肥 230009;
4. 福建农林大学交通与土木工程学院, 福州 350002

详细信息

作者简介:
胡子明,博士研究生,主要从事钢结构与组合结构研究。

通讯作者:
王静峰,博士,教授,主要从事钢结构与组合结构研究,jfwang008@163.com。

计量
- 文章访问数: 42
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- 被引次数: 0
出版历程
- 收稿日期: 2023-10-31
- 网络出版日期: 2024-12-05

A Design Method for One-Side Bolted Connection Joints of Prefabricated Concrete-Encased CFST Composite Column and the Analysis of Seismic Performance of CECFST Frames

HU Ziming^1,3,
GUO Lei²,
WANG Jingfeng^{1,2
, ,},
LIAO Feiyu⁴

1. College of Civil Engineering, Hefei University of Technology, Hefei 230009, China;
2. Engineering Research Center of Low-carbon Technology and Equipment for Cement-based Materials, Ministry of Education, Hefei University of Technology, Hefei 230009, China;
3. Anhui Key Laboratory of Civil Engineering Structures and Materials, Hefei 230009, China;
4. College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China

摘要

摘要: 钢管混凝土叠合柱具有优越的力学性能和耐久性,在工程中得到了广泛应用。然而目前钢管混凝土叠合柱-钢梁连接节点常采用焊接连接,节点区施工困难且焊接工作量大,焊接节点在地震下易发生脆性断裂。研究了钢管混凝土叠合柱与钢梁单边螺栓连接节点,基于节点内力在外混凝土的扩散机制,揭示了外混凝土对单边螺栓受拉和钢梁翼缘受压承载力和刚度的影响,建立了节点承载力和初始刚度设计方法。采用OpenSEES程序建立了钢管混凝土叠合柱连接框架的弹塑性分析模型;基于组件法和叠加原理,考虑了节点弯矩-转角和剪力-剪切关系模型,通过试验结果验证了分析模型的正确性,研究了钢管混凝土叠合柱单边螺栓连接框架在不同烈度地震下的动力响应,研究此类框架结构的抗震性能是否满足现行相关规范要求。
- 钢管混凝土叠合柱 /
- 装配式节点 /
- 节点设计方法 /
- 抗震性能
Abstract: Concrete-encased concrete-filled steel tubular (CECFST) composite columns possess better durability and fire performance, and have been widly used in engineering practice. However, welding joints are generally used to connect the steel beam to CECFST column, leading significant difficulty in joint construction accompanied by a large amount of welding work. Moreover, welding joints are more likely to appear fracture under earthquake loads. The load transfer mechanism within the encased concrete was analyzed and its influence on the bearing capacity and stiffness of one-side bolts in tension and beam flanges in compression were discussed. The calculation model for the bearing capacity and stiffness of joints was established. OpenSEES software was employed to model the CECFST frame, in which the moment-rotation and shear force-shear curves were obtained based on the component method and superstition method, respectively. The accurary of the model was verified through test results, and the dynamic response of the CECFST frame with one-side bolted connections under different seismic intensities was studied. The seismic performance for such frame structures was investigated to determine whether it meets the requirements of current relevant specifications.
- concrete-filled CFST composite column /
- assembled joint /
- joint design method /
- seismic performance

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