|本期目录/Table of Contents|

[1]武振宇,丁玉坤.KK型搭接方管节点极限承载力的非线性有限元分析[J].建筑科学与工程学报,2007,24(02):30-35.
　WU Zhen-yu,DING Yu-kun.Nonlinear Finite Element Analysis of Ultimate Bearing Capacity of Partially Overlapped SHS KK-joints[J].Journal of Architecture and Civil Engineering,2007,24(02):30-35.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
24卷
期数:
2007年02期
页码:
30-35
栏目:
出版日期:
2007-06-20

文章信息/Info

Title:
Nonlinear Finite Element Analysis of Ultimate Bearing Capacity of Partially Overlapped SHS KK-joints
作者:
武振宇，丁玉坤
哈尔滨工业大学 土木工程学院,黑龙江 哈尔滨 150090
Author(s):
WU Zhen-yu, DING Yu-kun
School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China
关键词:
搭接方管节点;  KK型节点;  有限元分析;  多元线性回归;  极限承载力
Keywords:
overlapped SHS joint;  KK-joint;  finite element analysis;  multiple linear regression;  ultimate bearing capacity
分类号:
TU392.3
DOI:
-
文献标志码:
A
摘要:
采用有限元分析软件ANSYS对KK型搭接方管节点进行了弹塑性大挠度分析,研究了方管节点的极限承载力和塑性区扩展过程,揭示了节点的破坏机理和破坏模式,获得了节点的极限承载力和极限承载力随着节点几何参数的变化规律。2种荷载工况下节点性能的对比分析结果表明,绝大多数节点的极限承载力和几何参数对节点极限承载力的影响规律基本相同。通过多元线性回归,得出了体现主要几何参数影响的节点极限承载力计算公式,将回归公式与有限元计算结果进行了对比分析,验证了公式具有较好的精度,可供工程设计参考应用。
Abstract:
Static behavior of partially overlapped square hollow section(SHS)KK-joints was studied by finite element analysis software ANSYS involved in large deflection elastic-plastic range. The ultimate bearing capacity and the plasticity area spread process of the overlapped KK-joints under loading were investigated and the joint failure mechanisms and failure modes were revealed. The ultimate bearing capacity of the KK-joints and its variation regularity with geometric parameters were obtained. Two loading conditions were taken into account in analysis which revealed that ultimate bearing capacity of joints and the effect of main geometric parameters on joints' static behavior were almost same to most joints. The results show that the strength equation of partially overlapped SHS KK-joints covering the effect of main geometric parameters is developed through the multiple linear regression analysis based on the results of finite element analysis. The equation is founded to provide strength predictions to a very high degree of accuracy by comparing with the results of finite element analysis. It can be used in structural design as a reference.

参考文献/References:

[1] DOMINIQUE B,RICHARD G R.Triangular Truss Joints Using Rectangular Tubes[J].J Struct Engrg,1988,114(2):408-424.
[2]LEE M M K,WILMSHURST S R.Numerical Modelling of CHS Joints with Multiplanar Double-K Configuration[J].Journal of Constructional Steel Research,1995,32(1):281-301.
[3]武振宇,张壮南,丁玉坤,等.K型、KK型间隙方钢管节点静力工作性能的试验研究[J].建筑结构学报,2004,25(2):32-38. WU Zhen-yu,ZHANG Zhuang-nan,DING Yu-kun,et al. Experimental Research on the Static Behavior of Square Hollow Section Gapped K- and KK-joints[J].Journal of Building Structures,2004,25(2):32-38.
[4]张壮南,武振宇,丁玉坤,等.弦杆轴力作用下K型、KK型间隙方钢管节点静力工作性能的试验研究[J].土木工程学报,2005,25(2):32-38. ZHANG Zhuang-nan,WU Zhen-yu,DING Yu-kun,et al.An Experimental Research on the Static Behavior of Gapped SHS K- and KK-joints Under Axial Load[J].China Civil Engineering Journal,2005,25(2):32-38.
[5]DAVIES G,KELLY R,CROCKETT P.Effect of Angle on the Strength of Overlapped RHS K- and X-joints[C]//FARKAS J,JARMAI K.Tubular Structures VII.Rotterdam:Balkema,1996:78-84.
[6]丁玉坤,武振宇,张华山,等.K型、KK型搭接方管节点的试验研究[J].土木工程学报,2005,25(2):25-31. DING Yu-kun,WU Zhen-yu,ZHANG Hua-shan,et al.An Experimental Study on Partially Overlapped SHS K- and KK-joints[J].China Civil Engineering Journal,2005,25(2):25-31.
[7]丁玉坤.直接焊接K型、KK型搭接方管节点的静力性能研究[D].哈尔滨:哈尔滨工业大学,2004. DING Yu-kun.Research on the Static Behavior of Directly Welded Overlapped SHS K- and KK-joints[D].Harbin:Harbin Institute of Technology,2004.

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备注/Memo

备注/Memo:
收稿日期:2007-04-19
基金项目:国家自然科学基金项目(50578055)
作者简介:武振宇(1968-),男,黑龙江海林人,教授,博士生导师,工学博士,博士后,E-mail:wuzhenyu@hit.edu.cn。
更新日期/Last Update: 2007-06-20