【正文】 .............................................................................. 7 材料供應(yīng)情況 ............................................................................................................................... 7 臨建設(shè)施 ...................................................................................................................................... 7 任務(wù)安排及施工進度計劃： ........................................................................................................... 8 施工隊伍安排及施工范圍 ............................................................................................................ 8 施工進度計劃 ............................................................................................................................. 8 第四章施工方案及主要施工方法 .......................................................................................................... 9 總體施工方案 ............................................................................................................................... 9 支架施工方案 ..............................................................................................................................11 K142+ 下開河分離式立交 ....................................................................................................11 K145+409 西南泊中橋 .................................................................................................................13 AK0+345 中橋 ............................................................................................................................16 AK0+ 匝道橋 .....................................................................................................................20 CK0+317 中橋 .............................................................................................................................24 CRK1+ 流豐路橋 ................................................................................................................28 K141+160 上跨天橋 ....................................................................................................................31 K143+208 上跨天橋 ....................................................................................................................34 K146+370 上跨天橋 ....................................................................................................................34 支架預(yù)壓方案 ..............................................................................................................................37 支架預(yù)壓的目的 .........................................................................................................................37 預(yù)壓方法 ...................................................................................................................................38 觀測點布設(shè) ...............................................................................................................................38 預(yù)壓數(shù)據(jù)分析原 則及方法 ...........................................................................................................39 預(yù)壓施工中的安全注意事項 ........................................................................................................39 預(yù)拱度設(shè)置 ...............................................................................................................................39 支座安裝 .....................................................................................................................................40 模板安裝質(zhì)量控制 .......................................................................................................................41 模板制作 ...................................................................................................................................41 外、內(nèi)側(cè)模板安裝 .....................................................................................................................41 內(nèi)模制作及拼裝 ........................................................................................................................41 鋼筋綁扎、預(yù)應(yīng)力管道安裝 ..........................................................................................................42 鋼筋施工工藝流程 .....................................................................................................................42 鋼筋加工 ...................................................................................................................................42 鋼筋安裝 ...................................................................................................................................43 預(yù)應(yīng)力管道安裝 .........................................................................................................................43 混凝土澆筑 .................................................................................................................................44 混凝土的拌和與運輸 ..................................................................................................................44 混凝土的澆筑 ............................................................................................................................45 混凝土養(yǎng)護 .................................................................................................................................48 張拉、壓漿施工方案 ....................................................................................................................48 鋼絞線下料 ...............................................................................................................................48 鋼絞線編束、標(biāo)識 .....................................................................................................................48 張拉前的準(zhǔn)備 ............................................................................................................................48 預(yù)應(yīng)力張拉 .......................................................................................................................