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Q460高强钢焊接箱形柱轴心受压力学性能数值分析

王彦博,  李国强,  陈素文,  孙飞飞

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文章导航 > 工业建筑  > 2012 >  42(1): 26-31,69
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引用本文: 王彦博, 李国强, 陈素文, 孙飞飞. Q460高强钢焊接箱形柱轴心受压力学性能数值分析[J]. 工业建筑, 2012, 42(1): 26-31,69. doi: 10.13204/j.gyjz201201005
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Citation: Wang Yanbo, Li Guoqiang, Chen Suwen, Sun Feifei. NUMERICAL ANALYSIS OF MECHANICAL PROPERTY OF Q460 HIGH STRENGTH STEEL WELDED BOX COLUMNS UNDER AXIAL COMPRESSION[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(1): 26-31,69. doi: 10.13204/j.gyjz201201005
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Q460高强钢焊接箱形柱轴心受压力学性能数值分析

doi: 10.13204/j.gyjz201201005
  • 1.

    1. 同济大学土木工程学院,上海 200092;

  • 2.

    2. 同济大学土木工程防灾国家重点实验室,上海 200092

基金项目: 

国家自然科学基金项目(90815029)

详细信息
    作者简介:

    王彦博，男，1983年出生，博士研究生。E－mail:2ybwang@tongji.edu.cn

NUMERICAL ANALYSIS OF MECHANICAL PROPERTY OF Q460 HIGH STRENGTH STEEL WELDED BOX COLUMNS UNDER AXIAL COMPRESSION

  • 1.

    1. College of Civil Engineering,Tongji University,Shanghai 200092,China;

  • 2.

    2. State Key Lab of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China

摘要

    摘要
  • 摘要: 为了解国产Q460高强钢焊接箱形柱轴心受压的力学性能,以数值积分法和有限单元法对7个已有焊接箱形柱轴心受压试验进行数值分析。试件宽厚比为8～12,长细比为35～70。数值模型中考虑了实测的初始挠度、初始偏心及简化的残余应力分布模型。分析预测Q460高强钢焊接箱形柱轴心受压的极限承载力和荷载-挠度曲线。数值积分法分析结果与有限元分析结果吻合。为验证数值分析的准确性,将预测结果与已有试验结果进行对比发现,考虑残余应力、初始偏心、初始挠度的数值积分法与有限元分析可以准确地预测Q460钢焊接箱形柱受压力学行为。通过对比采用简化残余应力分布模型与采用实测残余应力分布模型的有限元分析结果,验证简化残余应力分布模型的准确性。
    Abstract: In order to investigate the behavior of Q460 high strength steel welded box columns under axial compression,numerical analysis was performed with both numerical integration method(NIM)and finite element method(FEM).The numerical models were based on the previous experiments conducted by authors.The measured initial geometric imperfections and simplified distributions of residual stresses were taken into account in the numerical models.The predicted results obtained through NIM and FEM showed a good agreement with each other.The comparison of test results with numerical results was presented for verifying the NIM program.It was demonstrated that both NIM and FEM,which took initial imperfections into account,could predict reliable results of the behavior of Q460 high strength steel welded box columns under axial compression.Moreover,the accuracy of the simplified distributions of residual stresses was verified by comparing the FEM results considering measured distributions with FEM results considering simplified distributions.
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    • 参考文献(9)
  • Nishino F,Ueda Y,Tall L. Experimental Investigation of the Buckling of Plates with Residual Stresses[A].Philadelphia:ASTM Special Technical Publication,No,419,1967.
    Usami Tsutomu,Fukumoto Yuhshi. Local and Overall Buckling of Welded Box Columns[J].Journal of the Structural Division ASCE,1982,(ST3):525-542.
    Usami Tsutomu,Fukumoto Yuhshi. Welded Box Compression Members[J].Journal of Structural Engineering,1984,(10):2457-2470.
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    施刚,石永久,王元清. 超高强度钢材焊接箱形轴心受压柱整体稳定的有限元分析[J].沈阳建筑大学学报(自然科学版),2009,(02):255-261.
    李国强,王彦博,陈素文. Q460高强钢焊接箱形柱轴心受压极限承载力参数分析[J].建筑结构学报,2011,(11):149-155.
    Shen Zuyan,Lu Lewei. Analysis of Initially Crooked,End Restrained Steel Columns[J].Journal of Constructional Steel Research,1983,(01):10-18.
    李国强,王彦博,陈素文. 高强钢焊接箱型柱轴心受压极限承载力试验研究[A].香港:香港钢结构学会,2010.328-338.
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出版历程
  • 收稿日期:  2011-06-20
  • 刊出日期:  2012-01-20

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