【正文】 10m 圓形墩；4橋墩下同樣布置單排 2 個直徑 、深35m 圓形樁。新橋結(jié)構(gòu)為：主孔 L=3 預應(yīng)力砼簡支梁橋，主孔墩、臺均采用鉆孔灌注樁基礎(chǔ)。1 / 32目 錄1 總體施工組織布置及規(guī)劃 ..................................................................................................................2 工程概況 .......................................................................................................................................2 施工特點、難點和重點分析及主要對策 ...................................................................................2 項目管理組織機構(gòu) .......................................................................................................................4 施工布置 .......................................................................................................................................62 主要項目方案、方法和技術(shù)措施 ........................................................................................................8 鉆孔灌注樁施工 ...........................................................................................................................8 承臺及橋墩施工 .........................................................................................................................11 T 梁預制施工 ..............................................................................................................................11 T 梁安裝施工 ..............................................................................................................................14 伸縮縫安裝及橋面鋪裝 .............................................................................................................15 城南大橋舊橋拆除 .....................................................................................................................163 施工進度計劃和資源配置 ..................................................................................................................17 施工進度計劃 .............................................................................................................................17 工期保證體系 .............................................................................................................................18 工期保證措施 .............................................................................................................................18 資源配置計劃 .............................................................................................................................194 工程質(zhì)量管理體系及保證措施 ..........................................................................................................21 質(zhì)量規(guī)劃 .....................................................................................................................................21 施工質(zhì)量管理組織機構(gòu) .............................................................................................................21 質(zhì)量保證體系及框圖 .................................................................................................................22 質(zhì)量保證措施 .............................................................................................................................235 安全生產(chǎn)管理體系及保證措施 ..........................................................................................................24 安全管理目標 .............................................................................................................................24 施工安全管理組織機構(gòu) .............................................................................................................24 安全保證體系 .............................................................................................................................24 安全保證措施 .............................................................................................................................246 環(huán)境保護、水土保持保證體系及保證措施 ......................................................................................28 防止擾民與污染 .........................................................................................................................28 搞好空氣質(zhì)量的保護 .................................................................................................................28 加強水質(zhì)保護 .............................................................................................................................28 加強噪聲控制 .............................................................................................................................28 污水、廢泥、棄渣處理措施 .....................................................................................................297 文明施工保證體系及保證措施 ..........................................................................................................30 文明施工組織機構(gòu) .....................................................................................................................30 文明施工實施措施 .....................................................................................................................302 / 32 1 總體施工組織布置及規(guī)劃 工程概況 瀘定城南大橋東北端緊靠瀘定客運中心，接瀘定成武路；西南端正對縣人民醫(yī)院，接豐碑街。由于該橋已成危橋，為了確保兩岸人員及車輛通行，擬在原址修建新橋。主要設(shè)計參數(shù)如下：（1）橋梁下部結(jié)構(gòu)橋梁下部從左岸向右岸依次設(shè)置 1～4橋墩。（2）橋梁上部結(jié)構(gòu)主橋上部構(gòu)造為 3 跨 預應(yīng)力簡支 T 梁，引橋上部結(jié)構(gòu)為 1現(xiàn)澆 T 梁；橋面寬度：（行車道）+22m（人行道）=。橋墩砼澆筑 m179。鋼筋制安 t； 施工特點、難點和重點分析及主要對策 施工特點（1）本工程工期僅有 12 個月，而且受春節(jié)放假和大渡河汛期等因素影響，工期非常緊張，施工高峰強度大且持續(xù)時間長。（3）T 梁跨度長達 、單片重量達 150t，T 梁運輸、安裝受周邊現(xiàn)有建筑界限等因素影響大，安裝施工