摘 要該文主要對橋式起重機(jī)的金屬結(jié)構(gòu)進(jìn)行了設(shè)計(jì)。金屬結(jié)構(gòu)的設(shè)計(jì)包括其主要尺寸的確定，主梁的設(shè)計(jì)、強(qiáng)度驗(yàn)算，以及剛度驗(yàn)算等，端梁的計(jì)算載荷的確定、主要焊縫的計(jì)算、接接頭的設(shè)計(jì)，焊接工藝設(shè)計(jì)等等。關(guān)鍵詞：橋式起重機(jī)；金屬結(jié)構(gòu)；主梁2AbstractThis thesis mainly to the bridge crane metal structure for hoisting mechanism.Metal structure design including the main girder, the size of the design, to determine the intensity, and stiffness checking computations, calculation of girders load determination, main calculation, after welding joint design, welding process design, etc.Key words: Bridge Crane;Metal Structure; Main beam。3目 錄摘 要 1ABSTRACT ......................................................................................................................2目 錄 31 前言 51.1 總體方案擬定 ..............................................................................................................52 主要設(shè)計(jì)尺寸計(jì)算 .....................................................................................................82.1 大車輪距 .....................................................................................................................82.2 主梁高度 .....................................................................................................................82.3 端梁高度 .....................................................................................................................82.4 橋架端部梯形高度 ...................................................................................................82.5 主梁腹板高度 ...........................................................................................................82.6 確定主梁截面尺寸 ...................................................................................................82.7 加勁板的布置尺寸 ......................................................................................................93 主梁的計(jì)算 ...............................................................................................................103.1 計(jì)算載荷確定 .........................................................................................................103.2 主梁垂直最大彎矩 ....................................................................................................103.3 主梁水平最大彎矩 ....................................................................................................113.4 主梁的強(qiáng)度驗(yàn)算 ........................................................................................................113.5 主梁的垂直剛度驗(yàn)算 ................................................................................................133.6 主梁的水平剛度驗(yàn)算： ............................................................................................134 端梁的計(jì)算 ...............................................................................................................154.1 計(jì)算載荷確定 ............................................................................................................154.2 端梁垂直最大彎矩 ....................................................................................................154.3 端梁水平最大彎矩 ....................................................................................................154.4 端梁截面尺寸的確定 ................................................................................................164.5 端梁的強(qiáng)度驗(yàn)算 ........................................................................................................165 主要焊縫的計(jì)算 .......................................................................................................205.1 端梁端部上翼緣焊縫 ................................................................................................205.2 下蓋板翼緣焊縫的剪應(yīng)力驗(yàn)算 ................................................................................205.3 主梁與端梁的連接焊縫 ............................................................................................205.4 主梁上蓋板焊縫 ........................................................................................................216 端梁接頭的設(shè)計(jì) .......................................................................................................226.1 端梁接頭的確定及計(jì)算 .........................................................................................226.1.1 腹板和下蓋板螺栓受力計(jì)算 .......................................................................226.1.2 上蓋板和腹板角鋼的連接焊縫受力計(jì)算 ...................................................236.2 計(jì)算螺栓和焊縫的強(qiáng)度 .........................................................................................236.2.1 螺栓的強(qiáng)度校核 ...........................................................................................236.2.2 焊縫的強(qiáng)度校核 ...........................................................................................24參考文獻(xiàn) .........................................................................................................................26致 謝 .........................................................................................................................274