【正文】 ................81 構(gòu)件分類 ......................................................................................................................81 運輸車輛的選擇 ..........................................................................................................82 構(gòu)件運輸計劃 ..............................................................................................................824. 鋼構(gòu)件運輸流程 ...............................................835. 運輸安全管理 .................................................836. 運輸過程中成品保護 ...........................................847. 構(gòu)件包裝要求和標(biāo)識要求 .......................................84 構(gòu)件包裝的重要性 ......................................................................................................84 包裝的總體要求 ..........................................................................................................85 構(gòu)件裝載及加固要求 ..................................................................................................85四、 鋼結(jié)構(gòu)現(xiàn)場拼裝及安裝 .......................................871. 工程概況 .....................................................872. 鋼結(jié)構(gòu)施工的重點及難點 .......................................883. 整體部署 .....................................................884. 鋼桁架現(xiàn)場拼裝 ...............................................88 桁架概述 ......................................................................................................................88 桁架拼裝 ......................................................................................................................92 桁架的檢驗 ..................................................................................................................94 桁架起拱 ......................................................................................................................945. 桁架的吊裝 ...................................................94 吊裝機械 ......................................................................................................................94 吊裝思路 ......................................................................................................................95 鋼結(jié)構(gòu)安裝時間安排 ..................................................................................................96 施工人員安排 ..............................................................................................................96 施工機具安排 ..............................................................................................................976. 測量放線 .....................................................97 測量儀器 ......................................................................................................................98 測量儀器的檢驗校核： ..............................................................................................987. 施工準備 ....................................................101 安裝機具、設(shè)備準備 ................................................................................................101 基礎(chǔ)找平和地腳螺栓檢查 ........................................................................................1048. 主桁架吊裝 ..................................................108 吊裝方案的確定 ........................................................................................................108 桁架編號及重量表 ....................................................................................................111 桁架分段統(tǒng)計 ............................................................................................................111 主桁架吊車起重性能驗算 ........................................................................................113 吊裝過程中桁架變形控制 ........................................................................................122 桁架的穩(wěn)定性計算及措施 ........................................................................................123 雙機抬吊安裝注意事項 ............................................................................................1329. 現(xiàn)場焊接 ....................................................134 焊接準備 ...................................................................................................................134 焊接工藝評定 ............................................................................................................135 焊接過程控制措施 ....................................................................................................136 現(xiàn)場焊接工藝流程 ....................................................................................................139 焊接變形控制 ............................................................................................................141 焊接質(zhì)量檢查 ............................................................................................................142 焊接操作注意事項 ....................................................................................................144 焊接質(zhì)量保證措施 ....................................................................................................145 焊接質(zhì)量通病與預(yù)防措施 ........................................................................................145 ................................................147 高強度螺栓難點 ........................................................................................................147 高強度螺栓試驗及復(fù)驗 ............................................................................................148 儲存與保管 ................................................................................................................149 高強度螺栓的安裝 ....................................................................................................150 接觸面縫隙超規(guī)的處理 ............................................................................................150 安裝時注意事項 ........................................................................................................151 高強螺栓安裝施工檢查 ............................................................................................152 高強螺栓檢測 ...