鐵路客運專線跨東小江222-225連續(xù)梁專項方案(定稿)

1、跨東小江222225連續(xù)梁專項方案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.....................................................................................................................

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

5、..........................................74.4普通普通鋼筋綁扎................................................................................................................94.5預應預應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、運拌、運輸................................................................................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)護和鑿毛.......................................................................................134.9預應預應力筋的下料、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、臨時臨時固結(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掛藍靜載試驗載試驗..................

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、預應預應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懸臂段臂段預施應力張拉及

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)梁專項專項方案方案一、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、交點里程DK35290，此處連續(xù)梁在曲線上、設置聲屏障。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，為預應力混凝土連續(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、中跨中及中支點處共設5個橫隔板，橫隔板設過人孔洞，供檢查人員通過。橋面防護墻內(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、橫三向預應力，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，預應力制孔采用內(nèi)徑ф70（圓形）、ф90（圓形）、ф100（圓形）和內(nèi)徑7019mm（扁形）波紋管；豎向束