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合安高鐵全線最大的連續梁拱橋順利合龍

新聞來源: 中鐵四局 發布日期:2019-04-25

4月17日6點48分,經過8個多小時的混凝土澆筑,由中鐵四局建筑公司合安鐵路HAZQ-1標三分部承建的合安高鐵花崗特大橋跨206國道連續梁成功合龍,是合安高鐵全線最大的連續梁拱橋,也是目前國內同類型跨度最大的連續梁拱橋之一。

合安高鐵是安徽省首條控股建設的高速鐵路,是國家“八縱八橫”鐵路網規劃京九高鐵的重要組成部分,總投資334億元。合安高鐵自新合肥西站引出,經肥西、舒城、廬江、桐城、懷寧等市縣,終至新安慶西站。正線全長162公里,設計行車速度350公里/小時,預計2020年建成通車,屆時合肥到安慶的時間將由現在的2小時縮短至40分鐘,對于完善長江經濟帶區域路網布局,提高路網質量和能力,帶動沿線地區經濟社會發展具有重要作用。

花崗特大橋跨G206國道連續梁全長361.6m,采用無砟軌道,道路與線路大里程夾角為25°,凈空高度為5m~11.2m,設計采用(90+180+90)m連續梁拱跨越,為預應力混凝土結構,采用單箱雙室變高度箱型截面,跨中及邊跨處梁高5.5m,0#塊處梁高11m,箱梁頂寬14.2m,分為79個梁段。

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