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新建鐵路寧波樞紐北環(huán)線40+64+40m有砟軌道雙線預應(yīng)力混凝土連續(xù)梁施工方案-文庫吧

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【正文】 ......................................................................................... 44 合龍段吊架 ..................................................................................................... 44 合龍段施工配重 ............................................................................................. 44 合龍段臨 時鎖定措施 ..................................................................................... 44 合龍段混凝土澆筑前的準備工作 ................................................................. 47 合龍段混凝土的澆筑及養(yǎng)護 ......................................................................... 48 注意事 項 ......................................................................................................... 48 體系轉(zhuǎn)換 ......................................................................................................... 49 連續(xù)梁鋼筋施工 ....................................................................................................... 50 ( 40+64+40) m 連續(xù)梁施工方案 III 工藝流程 ......................................................................................................... 50 質(zhì)量控制要點 ................................................................................................. 50 質(zhì)量控制程序 ................................................................................................. 54 鋼筋及預應(yīng)力管道安裝 ................................................................................. 54 預應(yīng)力施工 ............................................................................................................... 56 預應(yīng)力體系 ..................................................................................................... 56 伸長值的計算 ................................................................................................. 57 張拉前的準備工作 ......................................................................................... 57 縱向預應(yīng)力體系施工 ..................................................................................... 58 橫向預應(yīng)力體系施工 ..................................................................................... 61 豎向預應(yīng)力體系施工 ..................................................................................... 63 管道壓漿 ......................................................................................................... 64 封錨 ................................................................................................................. 66 混凝土施工 ............................................................................................................... 66 工程概況 ......................................................................................................... 66 混凝土供應(yīng)方案 ............................................................................................. 66 混凝土施工前準備 ......................................................................................... 67 混凝土拌和、運輸及輸送 ............................................................................. 69 混凝土澆筑方法 ............................................................................................. 70 混凝土養(yǎng)護 ..................................................................................................... 72 線型控制方案 ........................................................................................................... 72 線型控制基本原理 ......................................................................................... 72 預拱度計算 ..................................................................................................... 73 節(jié)段前緣施工標高確定 ................................................................................. 73 現(xiàn)場施工控制 ................................................................................................. 74 橋面附屬工程施工工藝 ......................................................................................... 75 防護墻、電纜槽施工 ................................................................................... 75 防水層施工 ................................................................................................... 77 接觸網(wǎng)支柱基礎(chǔ)及下錨拉線基礎(chǔ) ............................................................... 77 人行道欄桿 ................................................................................................... 77 橋梁綜合接地裝置 ....................................................................................... 77 ( 40+64+40) m 連續(xù)梁施工方案 IV 5 夏季施工方案 ..................................................................................................................... 78 組織準 備 .................................................................................................................... 78 技術(shù)準備 ................................................................................................................... 78 原材料準備 ............................................................................................................... 78 、水泥 ............................................................................................................... 78 、骨料 ............................................................................................................... 78 、水 ................................................................................................................... 78 、外加劑 ........................................................................................................... 78 混凝土拌制 ................................................................................................................ 78 混凝土運輸 ............................................................................................................... 79 混凝土澆筑 ............................................................................................................... 79 混凝土的養(yǎng)護 ........................................................................................................... 79 6 施工措施 .......................................
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