鋼橋焊接接頭強韌匹配現(xiàn)狀分析

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摘要：綜述了國內(nèi)鋼橋焊接接頭強韌性匹配情況。鋼板及焊接材料試驗數(shù)據(jù)表明：原材料的強度波動范圍較大，給強度匹配帶來較大的難度，需要在原材料標準中對其強度范圍進行限制；某些項目規(guī)定的焊縫強度限制指標缺乏理論依據(jù)，需要進行專題研究制定合理的波動范圍。

關(guān)鍵詞：鋼橋；焊接接頭；強韌匹配

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

橋梁是互聯(lián)互通的關(guān)鍵節(jié)點和樞紐工程，其破壞事故將造成嚴重的社會影響。（剩余4975字）