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1、鋼箱梁制造焊接工藝評(píng)定方案目錄1項(xiàng)目及產(chǎn)品結(jié)構(gòu)描述..............................................................................................32本項(xiàng)目產(chǎn)品接頭形式分析列表..............................................................................43工藝評(píng)定說明...................................................................
2、.....................................213.1鋼箱梁焊接工藝評(píng)定任務(wù)書編制的依據(jù)...................................................213.2焊接方法的選擇...........................................................................................213.3試板和焊接材料..............................................................
3、.............................213.4焊接設(shè)備.....................................................................................................213.5工藝評(píng)定編號(hào)說明.......................................................................................224工藝評(píng)定過程操作要求...................................
4、.......................................................224.1所用母材和焊接材料的檢驗(yàn)報(bào)告。.........................................................224.2評(píng)定時(shí)的焊接實(shí)況記錄.............................................................................224.3接頭檢驗(yàn)報(bào)告....................................................
5、.........................................225Q345D焊接工藝性分析...........................................................................................235.1原材料焊接性分析.......................................................................................235.2鋼材火焰切割.............................
6、..................................................................236工藝評(píng)定方案..........................................................................................................241項(xiàng)目及產(chǎn)品結(jié)構(gòu)描述本橋理論橋跨為2x40米,為兩跨等截面連續(xù)鋼箱梁橋,是連接呼和浩特至錫林浩特跨線改建橋,鋼橋縱向位于1.6%的上坡及R3500米的凸豎向曲線上,安裝時(shí)在橋跨中部設(shè)置1.625cm預(yù)拱度;鋼
7、橋橫坡由梁段繞中軸線旋轉(zhuǎn)而成.全橋鋼箱梁橫斷面為單箱單室構(gòu)造,橋頂面單幅橋?qū)?5.5米,底面寬11.5米,梁高1.8米,主要由頂板、底板、腹板、橫隔板、U肋、懸臂板等組成,如下圖。根據(jù)圖紙結(jié)構(gòu)及相關(guān)設(shè)計(jì)文件,鋼箱梁的焊縫形式主要分熔透型坡口對(duì)接焊縫,熔透型T型接頭,非熔透型貼角焊縫,根據(jù)實(shí)際操作位置,主要有平焊、橫焊、立焊、角焊等。根據(jù)不同的焊接形式、焊接位置、焊接方法及相關(guān)標(biāo)準(zhǔn),制定相應(yīng)的焊接工藝評(píng)定接頭。42本項(xiàng)目產(chǎn)品接頭形式分析列表53工藝評(píng)定說明3.1鋼箱梁焊接工藝評(píng)定任務(wù)書編制的依據(jù)根據(jù)設(shè)計(jì)圖紙及相關(guān)文件要求,依據(jù)《鐵路鋼橋制造規(guī)范》TB1