鋼橋焊接接頭強(qiáng)韌匹配現(xiàn)狀分析

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摘要：綜述了國(guó)內(nèi)鋼橋焊接接頭強(qiáng)韌性匹配情況。鋼板及焊接材料試驗(yàn)數(shù)據(jù)表明：原材料的強(qiáng)度波動(dòng)范圍較大，給強(qiáng)度匹配帶來較大的難度，需要在原材料標(biāo)準(zhǔn)中對(duì)其強(qiáng)度范圍進(jìn)行限制；某些項(xiàng)目規(guī)定的焊縫強(qiáng)度限制指標(biāo)缺乏理論依據(jù)，需要進(jìn)行專題研究制定合理的波動(dòng)范圍。

關(guān)鍵詞：鋼橋；焊接接頭；強(qiáng)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(diǎn)和樞紐工程，其破壞事故將造成嚴(yán)重的社會(huì)影響。（剩余4975字）