钢桥焊接接头强韧匹配现状分析

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摘要：综述了国内钢桥焊接接头强韧性匹配情况。钢板及焊接材料试验数据表明：原材料的强度波动范围较大，给强度匹配带来较大的难度，需要在原材料标准中对其强度范围进行限制；某些项目规定的焊缝强度限制指标缺乏理论依据，需要进行专题研究制定合理的波动范围。

关键词：钢桥；焊接接头；强韧匹配

Analysis of strength and toughness matching status of welded joints of steel bridges

ZHANG Jianfeng， LI Junping， PEI Xuefeng

China Railway Baoji Bridge Group Co.， Ltd.， Baoji 721006， Shanxi， China

Abstract： The domestic steel bridge welded joint strength and toughness matching is reviewed. Steel plate and welding material test data show that： the range of raw materials fluctuation strength is large， bringing greater difficulties to strength match. Therefore， limitations on strength range is needed in raw material standerds; In some programs， the weld seam strength limitation index lack of theoretical basis. There is a need for thematic research to develop a reasonable range of fluctuations based on each cases.

Keywords： steel bridge; welded joint; strength and toughness matching

1 序言

桥梁是互联互通的关键节点和枢纽工程，其破坏事故将造成严重的社会影响。（剩余4975字）