摘 要該文主要對橋式起重機的金屬結(jié)構進行了設計。金屬結(jié)構的設計包括其主要尺寸的確定，主梁的設計、強度驗算，以及剛度驗算等，端梁的計算載荷的確定、主要焊縫的計算、接接頭的設計，焊接工藝設計等等。關鍵詞：橋式起重機；金屬結(jié)構；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 主要設計尺寸計算 .....................................................................................................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 主梁的計算 ...............................................................................................................103.1 計算載荷確定 .........................................................................................................103.2 主梁垂直最大彎矩 ....................................................................................................103.3 主梁水平最大彎矩 ....................................................................................................113.4 主梁的強度驗算 ........................................................................................................113.5 主梁的垂直剛度驗算 ................................................................................................133.6 主梁的水平剛度驗算： ............................................................................................134 端梁的計算 ...............................................................................................................154.1 計算載荷確定 ............................................................................................................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 端梁的強度驗算 ........................................................................................................165 主要焊縫的計算 .......................................................................................................205.1 端梁端部上翼緣焊縫 ................................................................................................205.2 下蓋板翼緣焊縫的剪應力驗算 ................................................................................205.3 主梁與端梁的連接焊縫 ............................................................................................205.4 主梁上蓋板焊縫 ........................................................................................................216 端梁接頭的設計 .......................................................................................................226.1 端梁接頭的確定及計算 .........................................................................................226.1.1 腹板和下蓋板螺栓受力計算 .......................................................................226.1.2 上蓋板和腹板角鋼的連接焊縫受力計算 ...................................................236.2 計算螺栓和焊縫的強度 .........................................................................................236.2.1 螺栓的強度校核 ...........................................................................................236.2.2 焊縫的強度校核 ...........................................................................................24參考文獻 .........................................................................................................................26致 謝 .........................................................................................................................274