【正文】 1 / 36滬昆鐵路長昆段 CKTJ Ⅸ標段田 家 坪 舞 水 特 大 橋雙壁鋼圍堰施工方案中鐵十四局集團有限公司二 O 一一年六月2 / 36目 錄1 工程概況 ........................................................................................................1 主體工程 ............................................................................................................................................1 水文資料 ............................................................................................................................................1 地質(zhì)資料 ............................................................................................................................................1 工程特點及難點 ................................................................................................................................12 雙壁鋼圍堰設(shè)計 .............................................................................................2 雙壁鋼圍堰設(shè)計思路 ........................................................................................................................2 相關(guān)設(shè)計參數(shù) ....................................................................................................................................2 雙壁鋼圍堰結(jié)構(gòu)設(shè)計 ........................................................................................................................33 雙壁鋼圍堰施工方案 ......................................................................................5 雙壁鋼圍堰總體施工方案概述 ........................................................................................................5 雙壁鋼圍堰制作 ................................................................................................................................7 底節(jié)雙壁鋼圍堰拼裝、下水 ............................................................................................................8 雙壁鋼圍臨時錨固、接高 ..............................................................................................................12 雙壁鋼圍堰浮運 ..............................................................................................................................14 雙壁鋼圍堰再次接高 ......................................................................................................................15 鋼圍堰下沉定位 ..............................................................................................................................15 搭設(shè)鋼平臺、安放鋼護筒 ..............................................................................................................16 鋼圍堰內(nèi)清理 ..................................................................................................................................17 灌注封底砼 ....................................................................................................................................17 壁內(nèi)填充 ........................................................................................................................................18 鉆孔樁施工 ....................................................................................................................................19 承臺、墩身施工 ............................................................................................................................19 鋼圍堰拆除 ....................................................................................................................................194 基坑水下爆破施工方案 ................................................................................19 爆破工程概況 ..................................................................................................................................193 / 36 爆破設(shè)計 ..........................................................................................................................................20 爆破施工 ..........................................................................................................................................23 清碴 ..................................................................................................................................................25 爆破安全 ..........................................................................................................................................255施工機械設(shè)備表 ............................................................................................2