6003維修站施工方案

工程概 .-2...............................................................................................................................-2...............................................................................................................................-2...........................................................................................................-2...........................................................................................................-3..........................................................................................................................................-3..................................................................................................................................-4..............................................................................................................................-4...............................................................................................................................-4.......................................................................................................................-5...............................................................................................................................-5.......................................................................................................................-5..................................................................................................................................-6...............................................................................................................................-6.......................................................................................................................-7...................................................................................................................-8...............................................................................................................................-9.............................................................................................................................-12.........................................................................................................................-14.............................................................................................................................-17.........................................................................................................-18........................................................................................................-19................................................................................................................................-20.....................................................................................................................-20.............................................................................................................-21.................................................................................................-23........................................................................................................-25領(lǐng)導(dǎo)小組及資 .-25HSE體系.............................................................................................................................-26.............................................................................................................-26.........................................................................................................-29.....................................................................................................................-31............................................................................................................-33.............................................................................................................................-33.............................................................................................................................-33............................................................................................................................-34.................................................................................................................-34.................................................................................................................-34......................................................................................................................................-34...................................................................................................................-34...................................................................................................................-35...........................................................................................................-35..................................................................................................................................-36..................................................................................................................................-38..........................................................................................................-3969m×18mJC-124個(gè)，墊層底標(biāo)高-2.70m，JC-1短柱頂標(biāo)高0.10mJC-24個(gè)，墊層底標(biāo)高-2.70m，JC-2短柱頂標(biāo)高-0.10mC35C20，混凝土50mm40mm。綜合樓獨(dú)立基礎(chǔ)J-122個(gè)，墊層底標(biāo)高-2.60m，J-29個(gè)，墊層底標(biāo)高2.60m，J-39個(gè)，墊層底標(biāo)高-2.60m，J-3a3個(gè)，墊層底標(biāo)高-2.60m；基礎(chǔ)、基之間（赤道附近）2932mm252.3mm。0.3kN/m2,A類。85%31%。場地地貌：本工程所在摩拉島位于文萊—3米左右1.0m左右。表1.4- 工程施工特點(diǎn)重點(diǎn)和難 1GB50026—2JGJ8-3、《石油化工建（構(gòu)）GB50453-4GB51004-5、《GB50202-6GB50204-7GB50666-8GB50300-9、《鋼筋焊接及驗(yàn)收規(guī)程JGJ18-10JGJ107-11JGJ79-12、JGJ59-13JGJ130-14JGJ46-15、GB50484-16JGJ146-17、《安全生產(chǎn)許可證條例（2014修訂）1819HSE202122、施工手冊（第五版場地平整→定位測量→井點(diǎn)降水→土方開挖→基坑清理→修整找平→→混凝土墊層施工→基礎(chǔ)施工→基礎(chǔ)驗(yàn)收→土方回填→搞好“三通—平”(水通、電通、路通、場地平整)。修通場區(qū)主要運(yùn)輸干織土方工程的挖填、找平工作等。 1/20000。X=554200.Y=601619.

X=554200.Y=601670.X=554131.Y=601601.

X=554131.Y=601688.1.0m左右。因此對于大型、重型設(shè)備基礎(chǔ)施工需要采取降水措施。本0.5m為宜。m=1/1，基礎(chǔ)土方開挖2m3反鏟挖掘機(jī)，自卸汽車裝運(yùn)至指定地點(diǎn)，回填所需的土方二次回運(yùn)?；樱ú郏?00mm采用人工清槽，防止基底工藝流程：基底清理→檢驗(yàn)土質(zhì)→分層鋪土→碾壓密實(shí)→找平驗(yàn)收50mm，含水率應(yīng)符合規(guī)定。填土前50型裝載機(jī)裝土，自卸汽車運(yùn)土。填土應(yīng)分層夯實(shí)，每層虛350mm。采用小型壓路機(jī)（立式打夯機(jī)配合）分層夯實(shí)，夯實(shí)應(yīng)互相3遍，壓實(shí)系數(shù)≥0.94。60噸。檢查分兩步進(jìn)行：24臺(tái)。筋做成@300的馬凳，馬登做成“幾”字型，如下圖所示。

a、焊接：直徑大于28mm的帶肋鋼筋，其焊接應(yīng)經(jīng)試驗(yàn)確定。縱向受力鋼35d（d為連接鋼筋的較小直徑）500mm50%，縱向受驗(yàn)收應(yīng)符合《鋼筋焊接及驗(yàn)收規(guī)程》JGJ18-2012要求。b、機(jī)械連接：縱向受力鋼筋的機(jī)械連接接頭應(yīng)相互錯(cuò)開。鋼筋機(jī)械連接接頭II35d（d為連接鋼筋的較小直徑）；縱向受拉鋼筋的接頭面積百分率不宜大于50%，縱向受壓鋼筋的接頭面積百分率可不受限術(shù)規(guī)程》JGJ107-2016要求。c、綁扎搭接：縱向受力鋼筋的綁扎搭接接頭應(yīng)相互錯(cuò)開，鋼筋綁扎搭接接頭25%；對柱類構(gòu)件不宜大于50%。d、在施工中，當(dāng)需要以強(qiáng)度等級高的鋼筋代替原設(shè)計(jì)中的縱向受力鋼筋時(shí)，e、現(xiàn)澆框架鋼筋焊接或綁扎接頭不宜位于梁的中部，且宜避開梁端柱端的箍f、綁扎接頭搭接處應(yīng)用（20-22）號鐵絲扎緊，扎緊在搭接部分中的中心和兩→→→模內(nèi)雜物清理→模板安裝→方木支撐→調(diào)整尺寸、標(biāo)高→模板驗(yàn)收→砼澆筑安裝尺寸準(zhǔn)確，防止凹凸不平，模板加固采用鋼管支撐,柱模板根部定位（或內(nèi)撐可在放完線后，在樓地面鉆孔插Φ6或Φ8（或內(nèi)撐），運(yùn)輸→澆筑→振搗→抹面→2大于振動(dòng)半徑的1.5倍（一般為300～400mm）。振搗上一層時(shí)，應(yīng)插入下層約50mm。以消除兩層間的接搓。當(dāng)鋼筋較密時(shí)，可以用ф30振動(dòng)棒振搗作業(yè)。砼應(yīng)連28天送檢，同條件試件必須100lOOm3100lOOOm3200m3取樣不得少于一次；(5)在施工縫處繼續(xù)澆筑混凝土?xí)r,應(yīng)符合下列規(guī)定已澆筑的混凝土,1.2MPa在已硬化的混凝土表面上,應(yīng)清除水泥薄膜和松動(dòng)石子以及軟弱混凝土層并加以充分濕潤和沖洗干凈,且不得積水。即要做到:去掉