鐵路客運(yùn)專線跨東小江222-225連續(xù)梁專項(xiàng)方案(定稿)

1、跨東小江222225連續(xù)梁專項(xiàng)方案1目錄一、工程概況一、工程概況........................................................................................................................1二、二、總體施工方案體施工方案....................................................

2、............................................................2三、掛三、掛籃的結(jié)構(gòu)及形式構(gòu)及形式........................................................................................................2四、四、0#段施工方案段施工方案.....................

3、...........................................................................................54.1.支架搭支架搭設(shè).....................................................................................................................

4、....54.2支架堆支架堆載預(yù)壓載預(yù)壓方案方案.........................................................................................................64.3模板安裝模板安裝...............................................................................

5、..........................................74.4普通普通鋼筋綁扎................................................................................................................94.5預(yù)應(yīng)預(yù)應(yīng)力波力波紋管的加工、安裝及固定管的加工、安裝及固定.....................

6、......................................................104.6箱梁高性能混凝土的箱梁高性能混凝土的攪拌、運(yùn)拌、運(yùn)輸................................................................................114.7箱梁混凝土的灌注箱梁混凝土的灌注..................................

7、.....................................................................124.8混凝土的拆模、養(yǎng)混凝土的拆模、養(yǎng)護(hù)和鑿毛.......................................................................................134.9預(yù)應(yīng)預(yù)應(yīng)力筋的下料、穿束、力筋的下料、穿束、張拉及孔道拉及孔道壓漿壓

8、漿..................................................................134.10孔道孔道壓漿壓漿與封與封錨........................................................................................................194.11支架拆除支架拆除................

9、.....................................................................................................20五、五、臨時(shí)臨時(shí)固結(jié)及支座安裝及支座安裝.................................................................................................

10、.215.1連續(xù)連續(xù)梁施工技梁施工技術(shù)要求要求...................................................................................................215.2施工方案施工方案.....................................................................................

11、..................................215.3支座安裝方案支座安裝方案...............................................................................................................22六、掛六、掛籃施工方案（施工方案（17號段）號段）...............................

12、.............................................................246.1掛籃的拼裝的拼裝..................................................................................................................246.2掛藍(lán)靜載試驗(yàn)載試驗(yàn)..................

13、............................................................................................256.3掛籃模板模板測量控制量控制.......................................................................................................266.4普通

14、普通鋼筋綁扎、扎、預(yù)應(yīng)預(yù)應(yīng)力波力波紋管的安裝及固定施工方法管的安裝及固定施工方法...........................................266.5懸臂段混凝土的灌注臂段混凝土的灌注..................................................................................................266.6懸臂段臂段預(yù)施應(yīng)力張拉及

15、孔道拉及孔道壓漿壓漿施工方法施工方法..............................................................286.7掛藍(lán)走行走行......................................................................................................................28七、七、邊跨現(xiàn)澆現(xiàn)

16、澆段施工段施工..........................................................................................................307.1施工工施工工藝流程流程...........................................................................................

17、....................307.2施工方法施工方法.......................................................................................................................30八、合八、合攏段施工方案及段施工方案及結(jié)構(gòu)體系的構(gòu)體系的轉(zhuǎn)換轉(zhuǎn)換..................................

18、........................................328.1合攏段施工工段施工工藝流程流程...................................................................................................32跨東小江222225連續(xù)梁專項(xiàng)方案1柯橋特大特大橋DK35220.84DK35366（222#墩225#墩）（墩）（4

19、06440）m連續(xù)連續(xù)梁專項(xiàng)專項(xiàng)方案方案一、工程概況一、工程概況柯橋特大橋（406440）m連續(xù)梁跨越東小江，與東小江斜交，交叉夾角為49、交點(diǎn)里程DK35290，此處連續(xù)梁在曲線上、設(shè)置聲屏障。東小江河道為V級通航河道，通航凈高為5m，凈寬為45m，橋址處最高通航水位5.20m、測時(shí)水位為4.12m。地質(zhì)情況：地表為人工填土，從地表以下依次為粉土、層厚12.5m16.5m不等、基本承載力100kpa，淤泥質(zhì)黏土層厚3.0m5.9m不等

20、、基本承載力60kpa。本處上部結(jié)構(gòu)為（406440）m連續(xù)梁，為預(yù)應(yīng)力混凝土連續(xù)單室、變高度、變截面結(jié)構(gòu)，箱梁頂寬12.0m，底寬6.7m，腹板為直腹板，腹板厚度48～80cm、按折線變化，底板厚度40～80cm、按直線線形變化，頂板厚度除梁端附近外為40cm。梁全長145.5m，中支點(diǎn)處梁高6.05m，跨中10m直線段及邊跨13.75m直線段梁高3.05m，邊支座中心線至梁端0.75m。箱梁底板下緣按拋物線變化，拋物線方程為y=0.

21、0045245x2。全橋在端支點(diǎn)、中跨中及中支點(diǎn)處共設(shè)5個(gè)橫隔板，橫隔板設(shè)過人孔洞，供檢查人員通過。橋面防護(hù)墻內(nèi)側(cè)凈寬8.8m，橋上人行道欄桿內(nèi)側(cè)凈寬11.9m，橋梁建筑總寬12.28m。梁箱采用縱、豎、橫三向預(yù)應(yīng)力，縱向束、橫向束采用ф15.2mm鋼絞線，采用錨具分別為M157、M1516、M1518、BM154、BM15p4型，預(yù)應(yīng)力制孔采用內(nèi)徑ф70（圓形）、ф90（圓形）、ф100（圓形）和內(nèi)徑7019mm（扁形）波紋管；豎向束