含局部焊接缺陷的钢桁架模型材料性能研究

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Abstract Research purposes: The slag inclusion，air hole and weld residual stress often appear in the truss model sampling during welding and these weld defects would much affect the model modification and experiment．In order to provide the material parameters for the relative calculation and consider the effect of the typical weld defects on the structure performance，this paper researches the material performance of truss model with typical welded defects．

Research conclusions: The result of experimental research show the performance parameters of the material in the welded defect area aye variant，the parameters should be decided separately to the master material，toe zone and weld material rather than deciding one parameter for all of them．In this way，the results of lean calculation and analysis with finite element software can be more close to the actual loading situation．

Key words： steel truss structure material performance parameters welded details stress concentration

Received: 11 May 2009

PACS:

U443

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	Liu Ming—hui
	Yin Ai—guo

Cite this article:

Liu Ming—hui,Yin Ai—guo. Experimental Research on Material Performance of Truss Model with Typical Weld Defects[J]. 铁道工程学报, 2010, 27(7): 52-54.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2010/V27/I7/52

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