地下連續(xù)墻專項(xiàng)施工方案

1、一經(jīng)路站地下連續(xù)墻專項(xiàng)施工方案天津城建集團(tuán)有限公司天津地鐵天津地鐵1號(hào)線東延至國家會(huì)展中心工程號(hào)線東延至國家會(huì)展中心工程站地下連續(xù)墻專項(xiàng)施工方案地下連續(xù)墻專項(xiàng)施工方案編制：審核：批準(zhǔn)：公司天津地鐵1號(hào)線東延2標(biāo)項(xiàng)目經(jīng)理部2014年1月一經(jīng)路站地下連續(xù)墻專項(xiàng)施工方案天津城建集團(tuán)有限公司25.3.8泥漿施工管理..................................................................

2、..................................................285.3.9泥漿置換.............................................................................................................................285.3.10泥漿質(zhì)量檢測(cè)及調(diào)控.................

3、......................................................................................295.4試成槽及原材檢驗(yàn)........................................................................................................................3

4、05.5首件驗(yàn)收.........................................................................................................................................325.6成槽施工..................................................................

5、......................................................................335.6.1槽段劃分.............................................................................................................................345.6.2槽段放樣...

6、.........................................................................................................................345.6.3槽段開挖........................................................................................

7、....................................345.6.4導(dǎo)墻拐角部位兩端部位處理............................................................................................375.6.5沉淀法清孔、二次清孔泥漿置換....................................................

8、................................375.6.6刷壁....................................................................................................................................385.6.7成槽質(zhì)量控制標(biāo)準(zhǔn)................................

9、............................................................................385.7地下連續(xù)墻接頭的處理.................................................................................................................385.8鋼筋籠制作和吊放...

10、......................................................................................................................395.8.1鋼筋籠加工平臺(tái)........................................................................................

11、........................395.8.2鋼筋籠制作........................................................................................................................395.8.3閃光對(duì)焊質(zhì)量保證及技術(shù)措施............................................

12、............................................405.8.4鋼筋籠吊點(diǎn)材料的選擇、導(dǎo)管倉布置與鋼筋籠加固....................................................425.8.5鋼筋籠保護(hù)層設(shè)置................................................................................

13、............................445.8.6預(yù)埋件的安裝.....................................................................................................................445.8.7鋼筋籠吊放..................................................

14、......................................................................455.9混凝土灌注....................................................................................................................................485.10鎖口

15、管頂拔..................................................................................................................................495.11墻趾注漿.............................................................................

16、.........................................................505.11.1預(yù)留注漿管......................................................................................................................505.11.2注漿要求與參數(shù).................

17、.............................................................................................515.11.3試注漿....................................................................................................................

18、..........515.11.4正常注漿..........................................................................................................................525.12地下連續(xù)墻各部位允許偏差..........................................................

19、............................................52六、關(guān)鍵點(diǎn)控制及針對(duì)性的預(yù)防措施........................................................................................................536.1槽壁穩(wěn)定性控制及針對(duì)性措施....................................

20、................................................................536.1.1地下水頭控制....................................................................................................................536.1.2泥漿控制................

21、............................................................................................................536.1.3施工荷載控制...................................................................................................

22、.................536.2垂直度控制....................................................................................................................................536.2.1設(shè)備的選用.................................................

23、.......................................................................546.3成槽施工保證措施........................................................................................................................546.3.1卡斗的預(yù)防措施..

24、..............................................................................................................546.3.2埋斗的預(yù)防措施................................................................................................

25、................546.3.3掉斗的預(yù)防措施................................................................................................................556.3.4繞流的預(yù)防及處理措施.............................................................

26、.......................................556.4混凝土澆筑異常現(xiàn)象控制............................................................................................................566.4.1導(dǎo)管無法正常下放..........................................