【正文】 鏡湖新區(qū)一期路網(wǎng) 群賢路一號(hào)橋 橋梁 工程 浙江裕眾建設(shè)集團(tuán)有限公司 二○○ 四 年 二 月 十 八 日 1 目 錄 第一章 工程概況 .............................................................................................. 1 工程簡(jiǎn)介 .............................................................................................. 1 施工方法簡(jiǎn)介 ...................................................................................... 4 編制依據(jù) .............................................................................................. 4 第二章 施工計(jì)劃及總體布置 .......................................................................... 6 工程目標(biāo) ................................................................................................. 6 施工進(jìn)度計(jì)劃 ......................................................................................... 6 施工部署 ................................................................................................. 7 平面布置 ................................................................................................. 7 勞動(dòng)力組織 ............................................................................................. 8 主要施工機(jī)具設(shè)備 ................................................................................. 9 第三章 下部結(jié)構(gòu)施工方案 ............................................................................ 11 鉆孔灌注樁施 工 ................................................................................... 11 簡(jiǎn)介 .............................................................................................. 11 施工工藝流程 .............................................................................. 11 施工要點(diǎn) ...................................................................................... 11 承臺(tái)施工 ............................................................................................... 16 簡(jiǎn)介 .............................................................................................. 16 施工流程 ...................................................................................... 16 圍堰及基底施工 .......................................................................... 17 模板施工 ...................................................................................... 19 2 鋼筋施工 ...................................................................................... 20 承臺(tái)大體積混凝土澆筑 ............................................................... 20 橋墩施工 ............................................................................................... 25 施工流程 ...................................................................................... 25 施工要點(diǎn) ...................................................................................... 26 橋臺(tái)施工 ............................................................................................... 26 蓋梁施工 ............................................................................................... 27 施工工序 ...................................................................................... 27 支架布置 ...................................................................................... 28 模板安裝 ...................................................................................... 30 鋼筋施工 ...................................................................................... 32 混凝土施工 .................................................................................. 34 預(yù)應(yīng)力張拉及孔道壓漿 ............................................................... 34 盆式橡膠支座安裝 ............................................................................... 35 簡(jiǎn)介 .............................................................................................. 35 支座安裝步驟 .............................................................................. 35 安裝注意事項(xiàng) .............................................................................. 35 第四章 主橋上部結(jié)構(gòu)施工方案 ..................................................................... 37 施工程序 ............................................................................................... 37 施工流程 ............................................................................................... 38 0 號(hào)塊施工 ............................................................................................ 39 支架設(shè)計(jì) ...................................................................................... 39 0 號(hào)梁段模板 ............................................................................... 40 3 墩頂處理 ...................................................................................... 42 0 號(hào)塊施工 ................................................................................... 43 節(jié)段懸臂澆筑 ....................................................................................... 45 掛籃系統(tǒng) ...................................................................................... 46 掛籃拼裝 ...................................................................................... 49 掛籃預(yù)壓試驗(yàn) .............................................................................. 50 掛籃行走 ...................................................................................... 50 懸臂澆筑工序 .............................................................................. 51 三角形掛籃特點(diǎn) .......................................................................... 51 鋼筋安裝 ...................................................................................... 52 預(yù)應(yīng)力管道 .................................................................................. 53 混凝土澆筑 .................................................................................. 54 邊跨直線段施工 ................................................................................... 55 地基處理及支架布置 .................................................................. 55 模板施工 ..................................................................................... 56