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升降梯沿河西80米高大型龍門吊徐徐上升，江麵上三跨提籃式鋼拱慢慢進入視線。昨天上午9時18分，長630米、重1.2萬(wan)噸(dun)的(de)福(fu)元(yuan)路(lu)湘(xiang)江(jiang)大(da)橋(qiao)主(zhu)橋(qiao)主(zhu)拱(gong)，被(bei)中(zhong)交(jiao)二(er)航(hang)局(ju)掌(zhang)控(kong)的(de)液(ye)壓(ya)千(qian)斤(jin)頂(ding)頂(ding)推(tui)到(dao)湘(xiang)江(jiang)主(zhu)航(hang)道(dao)以(yi)東(dong)，長(chang)沙(sha)最(zui)寬(kuan)湘(xiang)江(jiang)大(da)橋(qiao)實(shi)現(xian)主(zhu)橋(qiao)合(he)龍(long)。長(chang)沙(sha)市(shi)城(cheng)投(tou)集(ji)團(tuan)項(xiang)目(mu)公(gong)司(si)總(zong)工(gong)程(cheng)師(shi)段(duan)堅(jian)堤(di)表(biao)示(shi)，預(yu)計(ji)今(jin)年(nian)9月中旬全麵完成橋麵建設，10月中旬通車。
重zhong達da萬wan餘yu噸dun的de主zhu拱gong是shi怎zen樣yang被bei推tui到dao湘xiang江jiang上shang的de呢ne？中zhong交jiao二er航hang局ju福fu元yuan路lu大da橋qiao項xiang目mu部bu常chang務wu副fu經jing理li關guan成cheng元yuan介jie紹shao，主zhu橋qiao鋼gang拱gong梁liang采cai用yong多duo點dian自zi平ping衡heng頂ding推tui法fa安an裝zhuang，即ji先xian將jiang鋼gang拱gong梁liang加jia工gong成cheng單dan元yuan件jian，拚pin成cheng吊diao裝zhuang節jie段duan，然ran後hou按an“先梁後拱，從兩邊向中間合龍”的de順shun序xu，分fen節jie段duan在zai臨lin時shi搭da建jian的de平ping台tai上shang拚pin裝zhuang成cheng形xing。第di一yi跨kua鋼gang拱gong梁liang拚pin裝zhuang完wan成cheng後hou，利li用yong步bu履lv式shi平ping移yi頂ding推tui裝zhuang置zhi，將jiang鋼gang拱gong梁liang頂ding推tui出chu拚pin裝zhuang平ping台tai，然ran後hou在zai平ping台tai上shang拚pin裝zhuang第di二er跨kua鋼gang拱gong梁liang。拚pin裝zhuang完wan成cheng後hou，采cai用yong同tong樣yang的de方fang法fa將jiang第di二er跨kua頂ding推tui出chu臨lin時shi搭da建jian平ping台tai。最zui後hou拚pin裝zhuang第di三san跨kua鋼gang拱gong梁liang，三san跨kua鋼gang拱gong梁liang全quan部bu拚pin裝zhuang完wan成cheng後hou，用yong千qian斤jin頂ding整zheng體ti頂ding推tui到dao湘xiang江jiang主zhu航hang道dao區qu域yu。
