【正文】 1 天寶特大橋系梁、墩柱、蓋梁施工專項(xiàng)安全方案 一、 工程概況 ............................................................................................................................... 3 二、編制依據(jù) ............................................................................................................................... 3 三、施工工序 ............................................................................................................................... 3 四、施工準(zhǔn)備 ............................................................................................................................... 4 測量放樣 ........................................................................................................................ 4 原材料控制 ..................................................................................................................... 4 施工現(xiàn)場準(zhǔn)備 ................................................................................................................. 4 五、樁間系梁施工 ........................................................................................................................ 4 樁間系梁施工工藝 .......................................................................................................... 4 樁間系梁施工方法 .......................................................................................................... 4 測量放線 .............................................................................................................. 5 基坑開挖 .............................................................................................................. 5 鑿除鉆孔樁頭 ....................................................................................................... 6 鋼筋施工 .............................................................................................................. 6 安裝樁間系梁模板 ................................................................................................ 6 澆筑混凝土 .......................................................................................................... 6 拆模及養(yǎng)護(hù) .......................................................................................................... 7 樁間系梁施工質(zhì)量要求 ......................................................................................... 7 六、墩柱施工 ............................................................................................................................... 7 施工工藝 ........................................................................................................................ 7 墩柱施工方法 ................................................................................................................. 8 接頭清理 .............................................................................................................. 8 測量放線 .............................................................................................................. 8 鋼筋施工 .............................................................................................................. 9 墩柱模板安裝與支撐 ............................................................................................ 9 墩柱混凝土澆筑 ................................................................................................. 10 拆模及養(yǎng)護(hù) ........................................................................................................ 10 墩柱施工技術(shù)措施 ...............................................................................................11 七、蓋梁、墩間系梁施工 .............................................................................................................11 工程數(shù)量及施工方法選擇 ...............................................................................................11 施工工藝 .......................................................................................................................11 橫穿鋼棒法施工方案 ..................................................................................................... 12 工藝流程 ............................................................................................................ 12 施工要點(diǎn) ............................................................................................................ 12 澆注砼 ............................................................................................................... 13 蓋梁支架結(jié)構(gòu)受力計算 ....................................................................................... 15 墩間系梁施工質(zhì)量要求 ....................................................................................... 15 八、影響安全質(zhì)量的危險源及其相關(guān)防范措施 ............................................................................ 15 九、安全保證措施 ...................................................................................................................... 21 十、應(yīng)急救援預(yù)案 ...................................................................................................................... 22 指導(dǎo)思想和編制目標(biāo) ................................................................................................... 22 編制依據(jù) ..................................................................................................................... 23 橋梁墩柱施工易發(fā)生的事故類型和危險程度 ................................................................ 23 應(yīng)急救援工作原則 ....................................................................................................... 23 組織機(jī)構(gòu)與職責(zé) .......................................................................................................... 24 預(yù)防和預(yù)警措施 .......................................................................................................... 26 應(yīng)急救援處理措施 ....................................................................................................... 30 恢復(fù)生產(chǎn) ..................................................................................................................... 32 應(yīng)急物資及裝備保障 .........................................................................................