华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (3): 100-105.

• 土木建筑工程 • 上一篇    下一篇

不规则布置梁加强环式梁柱节点承载力及刚度

何军 蔡健 吴建营 陈庆军   

  1. 华南理工大学 建筑学院,广东 广州 510640
  • 收稿日期:2006-05-16 出版日期:2007-03-25 发布日期:2007-03-25
  • 通信作者: 何军(1980-),男,硕士,现任职于广东省建筑设计研究院,主要从事钢结构工程研究. E-mail:egjunh@163.com
  • 作者简介:何军(1980-),男,硕士,现任职于广东省建筑设计研究院,主要从事钢结构工程研究.
  • 基金资助:

    广东省自然科学基金资助项目(020965) ;华南理工大学自然科学基金资助项目

Load-Carrying Capacity and Stiffness of Beam-Column Joint Strengthened with Stiffening Ring on Irregularly -Arranged Beam

He Jun  Cai Jian  Wu Jian-ying  Chen Qing-jun   

  1. School of Architecture and Civil Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-05-16 Online:2007-03-25 Published:2007-03-25
  • Contact: 何军(1980-),男,硕士,现任职于广东省建筑设计研究院,主要从事钢结构工程研究. E-mail:egjunh@163.com
  • About author:何军(1980-),男,硕士,现任职于广东省建筑设计研究院,主要从事钢结构工程研究.
  • Supported by:

    广东省自然科学基金资助项目(020965) ;华南理工大学自然科学基金资助项目

摘要: 不规则布直梁节点的设计是钢结构设计中的难点.文中以不规则布直梁加强环式梁柱节点为研究对象,进行了该类型节点的足尺模型试验,了解节点的受力性能和破坏机理.基于试验结果,采用理想弹塑性应力-应变关系和Von Mises 屈服准则,并考虑几何非线性的影响,建立了与试验模型对应的有限元分析模型.在此模型基础上,利用有限元程序进行了参数分析.综合试验、有限元分析结果,提出了不规则布直梁加强环式梁柱节点承载力和刚度的计算方法.

关键词: 加强环, 节点, 承载力, 刚度, 试验研究, 有限元分析

Abstract:

For a steel structure , it is difficult to design reasonable joint on the irregularly-arranged beam. In order to solve this problem , a typical kind of full-scale beam-column joint strengthened with stiffening ring on the irregu-larly-arranged beam is modeled and tested , and the structural behavior and collapse mechanism of the joint are also investigated. Based on the experimental results , a finite-element analyzing model is established according to the elastic-perfectly plastic model , the Von Mises yield criterion and the geometric nonlinearity. The proposed nonli-near finite element model is then employed to carry out numerical parametric analyses for the joint. By summarizing the experimental and numerical results , two formulae are finally presented to calculate the load-carrying capacity and stiffness of the joint strengthened with stiffening ring on the irregularly-arranged beam.

Key words: stiffening ring, joint, load-carrying capacity, stiffness, experimental investigation, finite element analysis