徐忠根1，程定荣1，邓长根2

（1 广州大学土木工程学院， 广州 510006； 2 同济大学土木工程学院， 上海 200092）

 

［摘要］基于2个新型柱外传力式节点和2个传统节点的试验结果，采用大型有限元软件ANSYS对节点在单调荷载作用下的受力性能进行有限元分析，研究了两类节点的极限荷载、应力分布、应力发展规律、破坏形态。有限元计算得到的荷载位移曲线和局部破坏形态与试验结果吻合较好。研究结果表明，增设传力板使得节点应力得到改善，从而避免梁根部应力发展导致梁柱连接处焊缝过早地发生脆性破坏，而且增设传力板使得节点承载力得到提高。

［关键词］柱外传力；传力板；节点；试验；有限元分析

中图分类号：TU391      文献标识码：A      文章编号：1002-848X(2013)09-0062-04

 

Experiment and finite element analysis on the behavior of connections of  steel frame joints transferring forces outside columns

Xu Zhonggen1, Cheng Dingrong1, Deng Changgen2

 (1 School of Civil Engineering, Guangzhou University, Guangzhou 510006, China; 2 College of Civil Engineering, Tongji University, Shanghai 200092, China)

 

Abstract: Based on experimental results of two -steel frame joints transferring forces outside columns and two ordinary joints, the mechanical properties of two kinds of joints under static loading were calculated by ANSYS software. The ultimate load, distribution of stresses, development rule of stresses, and failure mode of two kinds of joints were investigated. The load-displacement curves and local failure modes by finite element analysis show good agreement with those of the experiments. Analytical results indicate that the stresses of joints are improved by adding transfer plates, thereby the premature brittle fracture near the butt weld with high stresses is avoided. All the bearing capacities of joints are improved by adding transfer plates.

Keywords: forces transferring outside columns; transfer plate; joint; experiment; finite element analysis

作者简介：徐忠根，博士，教授，Email: xuzhonggen@263.net。

 

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