【正文】 ................... 4 七、施工方案 ....................................................................................................................... 4 （一） 0段施工方法 ......................................................................................................... 5 支座施工 .............................................................................................................. 5 0段支架施工 ....................................................................................................... 9 0段支架預壓及外模安裝 ..................................................................................... 9 梁體鋼筋安裝 ......................................................................................................13 預應力管道安裝 ..................................................................................................13 0段砼澆筑 ..........................................................................................................15 0段外模拆除及預應力施工 .................................................................................17 1段施工 .............................................................................................................17 （二）掛籃安裝和懸臂現(xiàn)澆梁段施工 ...............................................................................17 掛籃安裝、預壓 ..................................................................................................17 懸臂現(xiàn)澆梁段施工 ...............................................................................................20 養(yǎng)護 ....................................................................................................................20 （三）掛籃移動 ...............................................................................................................20 （四）邊跨現(xiàn)澆段施工 ....................................................................................................21 工藝流程 .............................................................................................................21 施工方法 .............................................................................................................21 （五）合攏段施工 ...........................................................................................................24 合攏段施工工藝 ..................................................................................................24 合攏段的配重 ......................................................................................................25 合攏段的鎖定支撐 ...............................................................................................25 合攏段施工注意事項 ...........................................................................................26 （六）體系轉(zhuǎn)換 ...............................................................................................................27 （七）懸臂澆筑中的施工監(jiān)控量測 ...................................................................................27 撓度監(jiān)測 .............................................................................................................27 懸臂澆注梁段的中線控制 ....................................................................................28 立模標高的確定與調(diào)整 ........................................................................................28 材料參數(shù)測量 ......................................................................................................29 觀測注意事項 ......................................................................................................30 （八）預應力筋張拉施工 .................................................................................................30 縱向穿鋼束 ..........................................................................................................30 汾河特大橋 跨七一渠 連續(xù)箱梁施工方案 中鐵十一局山西中南部鐵路通 道 ZNTJ7 標項目經(jīng)理部 2 張拉準備工作 ......................................................................................................31 張拉施工 .............................................................................................................31 張拉施工主要技術措施 ........................................................................................32 張拉施工注意事項 ...............................................................................................32 （九）預應力孔道真空壓漿 .............................................................................................33 （十）預埋件設置 ...........................................................................................................35 八、連續(xù)梁施工質(zhì)量控制措施 ......................................................................................... 35 （一）預應力施工質(zhì)量控制措施 ......................................................................................35 （二）掛籃懸臂現(xiàn)澆施工技術保證措施 ............................................................................36 （三）橋梁測量控制技術措施 ..........................................................................................37 （四）保證結構強度、剛度、外觀質(zhì)量的主要技術措施 ...................................................37 （五）保證連續(xù)箱梁結構幾何、變形、變位等要求所采取的主要技術措施 .......................38 九、施工進度計劃的保證措施 ......................................................................................... 38 編制施工進度計劃，指導現(xiàn)場施工 .............................................................................38 編制實施性施工組織設計，保障技術服務 ...................................................................38 合理組織施工隊伍 ......................................................................................................39 加強協(xié)調(diào)，盡快解決影響施工進度的不利因素 ............................................................39 加強施工組織，最大限度地提高掛籃使用效率 ............................................................39 十、連續(xù)梁施工安全控制措施 ......................................................................................... 39 （一）加強安全教育和安全操作規(guī)程的培訓 .....................................................................40 （二）實行安全生產(chǎn)責任制 .............................................................................................40 （三）安全措施