【正文】 青島海灣大橋第六合同土建工程非通航孔橋鉆孔灌注樁施工技術(shù)方案路橋集團(tuán)國際建設(shè)股份有限公司青島海灣大橋六合同項目經(jīng)理部二○○七年七月 1 目 錄第一章 工程概況 .....................................................................................................................1 工程簡介 .........................................................................................................................1 氣象、自然條件 .............................................................................................................1 氣象 .............................................................1 水文地質(zhì) .........................................................1 地震 .............................................................1 水文 .............................................................1 地形地貌與工程地質(zhì) ...............................................2 施工依據(jù) .........................................................................................................................2第二章 資源配置 .....................................................................................................................3 人力資源配置 .................................................................................................................3 主要施工設(shè)備配置 .........................................................................................................3 主要船機(jī)設(shè)備配置 .................................................3 主要測量設(shè)備配置 .................................................5 主要試驗設(shè)備配置 .................................................5第三章 施工計劃安排 .............................................................................................................7 基礎(chǔ)及下部結(jié)構(gòu)施工順序 .............................................................................................7 施工周期分析 .................................................................................................................7 非航道橋詳細(xì)施工計劃安排 .........................................................................................8第四章 施工技術(shù)方案 .............................................................................................................9 鉆孔樁施工技術(shù)方案概述 .............................................................................................9 鉆孔樁鋼護(hù)筒設(shè)計 .........................................................................................................9 鉆孔平臺的設(shè)計 ...........................................................................................................11 鉆孔平臺的搭設(shè) ............................................................................................................14 臨時鋼管樁的插打 ................................................15 平聯(lián)焊接 ........................................................17 臨時鋼管樁樁頭割平 ..............................................18 鋼護(hù)筒插打 ......................................................19 鋼護(hù)筒牛腿位置放樣、焊接 ........................................21 平臺上部結(jié)構(gòu)整體制作、安裝 ......................................21 鉆孔平臺的維護(hù)保養(yǎng) ....................................................................................................22 鉆孔平臺的拆除 ............................................................................................................23 鉆孔灌注樁施工 ............................................................................................................23 泥漿制備與循環(huán) ..................................................23 鉆孔施工 ........................................................26 鋼筋籠制作與安裝 ................................................28 水下混凝土施工 ..................................................31 樁頭預(yù)留與鑿除 ..................................................34 樁基質(zhì)量檢測 ....................................................34 聲測管壓漿 ......................................................34 鉆孔樁施工主要風(fēng)險及對策 ........................................34 2 第五章 鉆孔樁施工質(zhì)量保證措施 .......................................................................................38 嚴(yán)格控制鋼護(hù)筒質(zhì)量 ...................................................................................................38 嚴(yán)格控制鋼護(hù)筒平面位置和垂直度 ...........................................................................39 嚴(yán)格控制鋼筋籠的加工質(zhì)量 .......................................................................................39 嚴(yán)格控制鋼筋籠的安裝質(zhì)量 .......................................................................................40 嚴(yán)格控制水下混凝土質(zhì)量 ...........................................................................................40第六章 工期保證措施 ...........................................................................................................40 工期保證承諾 ...............................................................................................................40 制定科學(xué)的施工組織管理制度，努力提高管理水平 ...............................................40 組織保證措施 ...............................................................................................................41第七章 安全保證措施 ...........................................................................................................41 安全管理目標(biāo) ...............................................................................................................41 安全施工組織保證 .......................................................................................................42 安全施工制度保證 .......................................................................................................42 安全施工資金保證 .......................................................................................................42 安全施工措施保證 .......................................................................................................43 思想保證 .......................................................................................................................43 應(yīng)急保證措施 ...............................................................................................................43第八章 環(huán)境保護(hù)措施 ...........................................................................................................44 環(huán)保組織機(jī)構(gòu) ................................................................................................................44 組織措施 ........................................................................................................................45 技術(shù)措施 .....................................................................................................