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    金臺鐵路靈江特大橋鋼管拱順利合龍

    時間:2019-06-12 14:52:10 來源:人民鐵道網 作者:李航天
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    400噸浮吊正在吊裝鋼管拱

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    靈江特大橋最后一節鋼管拱即將實現合龍

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    靈江特大橋鋼管拱全部合龍
     
      人民鐵道網訊 (通訊員李航天)6月10日,由中鐵十一局二公司承建的金臺鐵路全線重難點控制性工程——靈江特大橋主橋3×152米連續梁拱橋鋼管拱順利實現合龍,標志著靈江特大橋正式進入鋪軌階段。
     
      靈江特大橋全長4298.82米,共設5聯連續梁。施工中,采用在陸地及梁面搭建鋼管柱及型鋼臨時支架,再利用400噸浮吊將大節段整體吊至梁面支架進行拼裝,先吊裝緊挨拱腳大節段,后安裝中間大節段、全橋焊接、頂升混凝土,吊桿施工。
     
      建設者們先后攻克了“深水基礎冬季施工技術”“鋼圍堰設計、加工、拼裝、下沉、糾偏施工技術”“大體積混凝土冬季施工技術”等科技攻關課題,通過采用“新型C-O型鎖扣鋼管樁圍堰”“樁頭和墩身施工環切工藝”“深水長大樁基氣舉反循環施工工藝”等多項新技術、新工藝,大大提高了施工速度,降低了安全風險。
     
      金臺鐵路是浙江省首條自主建設的電氣化鐵路,通車后對暢通浙江沿海及金臺沿線與浙中地區、皖贛及中西部地區的貨運交流、促進沿線社會經濟發展具有重要意義。
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    標簽: 鐵路
    編輯: 孫玥
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