昌九高铁全线最长转体桥连续梁成功转体|国产毛片欧美毛片久久久

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  中新网南昌9月9日电(吴鹏泉 李翔)9日,经过30分钟的连续作业,(南)昌九(江)高铁全线最长T构转体桥——乐化联络线特大桥上跨昌九城际铁路连续梁成功转体,标志着昌九高铁建设取得重大进展。

  此次转体施工的昌九高铁乐化联络线特大桥右线转体连续梁全长162米,总重9701吨,下方跨越昌九城际铁路,底部距离既有铁路线接触网顶部仅2.1米,施工安全风险极高,是昌九高铁全线控制性工程之一。

图为转体施工前的昌九高铁乐化联络线特大桥上跨昌九城际铁路连续梁。任达禹 摄

  昌九城际铁路运输繁忙,高峰期每3分钟就有一趟列车通过。为确保工程施工与铁路运输安全,项目团队采用“先平行挂篮悬臂浇筑、后顺时针转体合龙”的施工方案,并通过“低净空旋挖”施工工艺,提升工作效率,减少天窗作业时间。

  据中铁十二局昌九高铁项目工程部部长张泽虎介绍,为保证连续梁转体实现一次性毫米级精准到位,项目团队在转体前进行了称重试验,并采用BIM(建筑信息模型)技术对连续梁转体的全过程进行三维模拟,精准计算桥梁转体的速度、角度等参数,动态调整牵引力,实现转体施工全程可视化、控制智能化。

  昌九城际铁路公司昌九指挥部副指挥长袁小军说,目前,昌九高铁建设已完成总投资计划的81%。其中,箱梁架设完成95%;17座隧道已贯通;3座新建站房主体结构全部封顶,站台雨棚主体结构全部完工;四电工程已全面开工建设。下一步,昌九高铁将全面进入无砟轨道铺设阶段,预计2027年3月全线具备开通运营条件。

图为转体完成的昌九高铁乐化联络线特大桥上跨昌九城际铁路连续梁。任达禹 摄

  昌九高铁正线全长138公里,桥隧比82%,共设车站5座、桥梁58座、隧道21座,是中国“八纵八横”高速铁路网京港通道的重要组成部分。

  铁路部门表示,昌九高铁建成通车后,将加强长江中游城市群、环鄱阳湖城市群与长三角、粤港澳周边城市群的互联互通,对助力长江经济带发展,推动沿线经济社会高质量发展具有重要意义。(完)

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