龍江東江大橋及引道工程水中承臺套箱施工方案

廣東恒大路橋建設(shè)有限公司龍江東江大橋及引道工程廣東恒大路橋建設(shè)有限公司 1 1二、編制依據(jù) 1 1一、工程概況 1二、施工簡述 2三、主墩承臺有底套箱施工工藝流程圖 3 3 3一、機械設(shè)備配置表 3二、組織機構(gòu)圖 4三、勞動力配置表（一個主墩承臺） 4 4一．主墩承臺套箱設(shè)計 41、基本參數(shù)與設(shè)計原則 42、套箱模板設(shè)計 3、套箱承重體系設(shè)計 二．主墩承臺套箱加工、安裝與下放 錯誤!未定義書簽。1、施工前準(zhǔn)備工作 2、套箱模板的安裝 3、套箱下沉就位及固定 1三．主墩承臺結(jié)構(gòu)施工 11、灌注封底砼 12、鋼筋制作、安裝 23、承臺砼澆筑 44、承臺砼的養(yǎng)護和拆模 6 6一、實測項目、質(zhì)量標(biāo)準(zhǔn) 6二、質(zhì)量保證措施 7廣東恒大路橋建設(shè)有限公司三、安全保證措施 9四、環(huán)境保護措施 一、工程中可能出現(xiàn)的事故 二、事故處理程序 三、應(yīng)急預(yù)案工作流程圖 一.工程概述 二.15~17#墩鋼套箱計算參數(shù) 三.計算說明 五.第一工況 六.第二工況 七.第三工況 1廣東恒大路橋建設(shè)有限公司序號序號工程項目名稱1T490.7282承臺C40砼m34122.314#、18#承臺為C303承臺封底砼C25m3890.62廣東恒大路橋建設(shè)有限公司慢慢放，要同時協(xié)調(diào)一致放下，保持平衡，并每放3廣東恒大路橋建設(shè)有限公司工序名稱工期（天）14～18#承臺清理平臺，安放下支撐梁梁，鋪板澆濕接縫7鋪設(shè)上承重梁、緊固吊桿2安裝側(cè)模、吊桿及外加勁立梁6下放套箱到位1安裝內(nèi)支撐、澆注封底砼5等強、抽水，拆上下支撐、割鋼護筒6第一層鋼筋施工5第一次砼澆注1安裝頂層鋼筋、預(yù)埋件施工6第一次砼澆注1合計40序號123臺臺序號123臺臺臺臺臺臺臺臺臺臺臺臺汽車吊變壓器發(fā)電機11112161182QY35QY25400KVA4545678砼泵平板車平板車水準(zhǔn)儀全站儀蘇光水準(zhǔn)儀全站儀9SOKKIA9振動棒平板振蕩器千斤頂4廣東恒大路橋建設(shè)有限公司序號砼攪拌車臺6常務(wù)副經(jīng)理：嚴興元技術(shù)負責(zé)人：王朋綜合辦鋼筋班機械班雜工班電工班模板班雜工班人6機械班人2廣東恒大路橋建設(shè)有限公司11廣東恒大路橋建設(shè)有限公司套箱側(cè)模安裝完畢后，選擇在潮水較低時進套箱下沉至要求高度后，測量其整體水平及支撐固定，套箱支撐所起的作用是加強套箱整體灌注點逐個灌注，每個灌注點均在剪球后移至下一灌注點，剪球時漏斗2廣東恒大路橋建設(shè)有限公司砼封底最好選擇在最低潮時進行，此時施工水位低鋼筋彎曲機的心軸應(yīng)套專用套管，平板表面應(yīng)鋪上墊①鋼筋彎鉤：鋼筋彎曲后，彎曲處內(nèi)皮收縮、外皮延伸、軸線長②箍筋：箍筋的末端應(yīng)作彎鉤，彎鉤形式應(yīng)符合設(shè)計要求。箍筋調(diào)③鋼筋下料長度應(yīng)根據(jù)構(gòu)件尺寸、混凝土保護層厚度，鋼筋彎曲調(diào)整3廣東恒大路橋建設(shè)有限公司b.彎起鋼筋下料長度=直段長度+斜彎長度－彎曲調(diào)片運輸困難，故承臺鋼筋網(wǎng)不考慮分塊預(yù)制安裝。同，安裝時為保證預(yù)埋鋼筋精確度，承臺鋼筋與墩筋布設(shè)?，F(xiàn)澆懸臂連續(xù)梁臨時錨固預(yù)埋件須嚴格按4廣東恒大路橋建設(shè)有限公司承臺砼屬于大體積砼，為了避免砼內(nèi)外溫差過大5廣東恒大路橋建設(shè)有限公司鋼套箱調(diào)整到位并固定后，由潛水員水下安裝抱箍，隙，由于水下操作不方便，極易造成空隙封堵不嚴、不砼振搗：砼澆筑時，可從上水往下水方向平鋪澆注不再冒氣泡，表面平坦、泛起浮漿為止；每一處振速度要慢，插入深度為0.5～1.0m，以混凝土開始冒漿、混凝土不再下沉和不冒氣泡6廣東恒大路橋建設(shè)有限公司序號序號檢查項目規(guī)定值或允許偏差檢查方法和頻率1砼強度（Mpa）在合格標(biāo)準(zhǔn)內(nèi)試驗中心站試壓2斷面尺寸（mm）3豎直度0.2%h用垂直儀或經(jīng)緯儀測量4頂面高程(mm)用水準(zhǔn)儀測量3處5軸線偏位(mm)用經(jīng)緯儀測量縱橫各2點6大面積平整度(mm)57預(yù)埋件位置(mm)用尺量鋼模板制作、安裝的允許偏差：長和高肋高長和高肋高面板端偏斜孔中心與板面的間距連接配件（螺栓、卡子等）板端中心與板端的間距沿板長、寬方向的孔板面局部不平板面和板側(cè)撓度模板標(biāo)高模板內(nèi)部尺寸軸線偏位梁上部構(gòu)造的所有構(gòu)件梁允許偏差（mm)0，-10，-0.57廣東恒大路橋建設(shè)有限公司裝配式構(gòu)件支撐面的標(biāo)高模板相鄰兩板表面高低差模板表面平整預(yù)埋件中心線位置預(yù)留孔洞中心線位置檢查項目受力鋼筋順長度方向加工后全長箍筋、螺旋筋各部分尺寸受力鋼筋間距兩排以上排距受力鋼筋間距箍筋、橫向水平筋、螺旋筋間距鋼筋骨架尺寸長鋼筋骨架尺寸寬、高或直徑保護層厚度允許偏差（mm)253允許偏差（mm）+5+5+5+5一般要求1.鋼筋焊接前應(yīng)進行試焊，合格后方可正式施焊。焊工必須持有考試合格證方能上崗。嚴格按現(xiàn)行《鋼筋焊接及驗收規(guī)程》（JGJ18-2003）的規(guī)定進行驗收。2.施焊的鋼筋應(yīng)檢測合格，焊條應(yīng)有合格證，性能符合要求。3.對于焊接接頭，在焊接接頭長度范圍內(nèi)，接頭長度區(qū)段內(nèi)受力鋼筋接頭面積的最大百分率（%）接頭接頭面積最大百分率形式受拉區(qū)受壓區(qū)接頭不限制焊接接頭不限制8廣東恒大路橋建設(shè)有限公司要均勻涂抹，厚度一致，不能有漏涂、沾有污漬和中固定人員，不得隨意更換人員。混凝土振搗時，振搗器慢，振搗點要均勻，在振搗器不能達到的地方應(yīng)輔以插鏟9廣東恒大路橋建設(shè)有限公司砼澆筑成型，待表面收漿完，砼初凝后應(yīng)盡快對砼待砼達到一定強度后進行拆模，對砼表面有漏漿及錯臺、序作業(yè)活動發(fā)生部位危險因素高處綁扎鋼筋、安裝骨架鋼筋施工設(shè)施高處綁扎2安全防護作業(yè)人員未系安全帶模板制作安裝拆除模板的違等施工作章裝拆業(yè)場所危險類型人員傷亡處墜落人員傷亡機械傷害違章違規(guī)人員傷亡風(fēng)險級別評價結(jié)果風(fēng)險級別需進一步采取措施維持現(xiàn)有措施安全管理方案維持現(xiàn)有措施安全管理方案加強防護作業(yè)活動/狀態(tài)發(fā)生部位危險因素危險類型評價結(jié)果風(fēng)險級別需進一步采取措施無人指揮違章起吊載太滿或捆扎不牢起重傷害CC操作規(guī)程安全管理方案56焊接作業(yè)場所焊割作業(yè)點火災(zāi)爆炸違反有關(guān)違章違安全規(guī)章規(guī)制度規(guī)定人員傷亡高處焊接人員傷員未使用亡個人防護維持現(xiàn)有措施C安全管理方案C狹小且高空作業(yè)，針對該項工程施工的特點，經(jīng)過調(diào)查工序中相對應(yīng)的重大危險源，并對各項危險源作出了保廣東恒大路橋建設(shè)有限公司廣東恒大路橋建設(shè)有限公司重要環(huán)境因素施工便道及混凝土攪拌等的粉塵排放澆灌混凝土洗管作業(yè)廢水排放澆灌混凝土洗管作業(yè)砼環(huán)境影響情況大氣污染水體污染水體、土壤污染綜合評分/等級AAA控制部門工程部工程部工程部澆注砼洗管作業(yè)廢棄砼可用吊斗接住，吊回廣東恒大路橋建設(shè)有限公司時還應(yīng)該嚴格保護事故現(xiàn)場，因搶救人員、疏啟動搶險預(yù)案組織搶險救助事故原因調(diào)查損失保險公司賠償檢查隱患、整改、復(fù)查事故報告業(yè)主、監(jiān)理及保海事部門集團公司廣東恒大路橋建設(shè)有限公司危險源及環(huán)境因素辨識、評價危險源及環(huán)境因素辨識、評價編制應(yīng)急預(yù)案成立搶險領(lǐng)導(dǎo)小組組建搶險隊、救護配備應(yīng)急物資、設(shè)備應(yīng)急知識教育培訓(xùn)定期評審實施應(yīng)急預(yù)案進行評審、修訂v廣東恒大路橋建設(shè)有限公司v軸心抗壓：Ra=14.5MPa抗拉：鋼鋼鋼-6鋼砼砼砼-6砼廣東恒大路橋建設(shè)有限公司序號8底板底板底板底板模板梁底板底板底板封底砼粘結(jié)力浮力(高水位）水側(cè)壓力(高水位)浮力(低水位)第一層承臺砼粘結(jié)力N/mm2N/mm2NN/mm2N/mmN/mm2N/mm2N荷載標(biāo)準(zhǔn)值1000*2.4*10-5=0.0241000*1.0*10-5=0.013.14*2.2*12*0.3*106=248688005700*1.0*10-5=0.0575700*900*1.0*10-5=51.33600*1.0*10-5=0.0361500*2.5*10-5=0.03753.14*2.2*12*0.3*106=24868800類型一工況二工況三工況廣東恒大路橋建設(shè)有限公司廣東恒大路橋建設(shè)有限公司EQ\*jc3\*hps36\o\al(\s\up0(=),x)廣東恒大路橋建設(shè)有限公司EQ\*jc3\*hps36\o\al(\s\up0(/),x)廣東恒大路橋建設(shè)有限公司廣東恒大路橋建設(shè)有限公司廣東恒大路橋建設(shè)有限公司廣東恒大路橋建設(shè)有限公司廣東恒大路橋建設(shè)有限公司廣東恒大路橋建設(shè)有限公司廣東恒大路橋建設(shè)有限公司EQ\*jc3\*hps36\o\al(\s\up0(/),x)廣東恒大路橋建設(shè)有限公司廣東恒大路橋建設(shè)有限公司TextTextTextN-mmN-mmNNN1.2D+1.1LCombination-72871.897943.69-90062.5701.2D+1.1LCombination72871.9-7943.68-90062.5601.2D+1.1LCombination-72871.51-7945.29-90029.7201.2D+1.1LCombination72871.517945.3-90029.4701.2D+1.1LCombination-10322.0439086.74-76336.2901.2D+1.1LCombination-39086.76-76335.9501.2D+1.1LCombination39080.55-76318.4301.2D+1.1LCombination-10329.8-39080.56-76318.4101.2D+1.1LCombination-7951.88-75078.2301.2D+1.1LCombination7951.88-12643.93-75078.2301.2D+1.1LCombination7951.89-75078.2101.2D+1.1LCombination-7951.89-12643.95-75078.2101.2D+1.1LCombination-14276.5631917.13-71048.7701.2D+1.1LCombination-31917.13-71048.7701.2D+1.1LCombination31917.12-71048.520廣東恒大路橋建設(shè)有限公司1.2D+1.1LCombination-14276.57-31917.12-71048.52001.2D+1.1LCombination-39177.32-15478.84-66756.05001.2D+1.1LCombination39177.32-66756001.2D+1.1LCombination-39177.19-66733001.2D+1.1LCombination39177.19-15478.06-66732.81001.2D+1.1LCombination2671.593253.97-60628.64001.2D+1.1LCombination-2671.59-3253.98-60628.59001.2D+1.1LCombination2673.62-3252.99-60621.66001.2D+1.1LCombination-2673.633252.99-60621.64001.2D+1.1LCombination6507.147311.07-57800.3001.2D+1.1LCombination-6507.14-7311.08-57800.21001.2D+1.1LCombination-6505.977308.76-57793.88001.2D+1.1LCombination65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