
粤东城际铁路8标五工区项目迎来重大施工节点,正式转入上部结构施工阶段
粤东城际铁路8标五工区项目龙湖站至汕头站特大桥三线变四线道岔连续梁贝雷梁吊装作业12日完成,标志着全线重难点控制性工程正式转入上部结构施工阶段。
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粤东城际铁路“一环一射线”是粤东地区城际铁路网的骨干通道,潮州东至汕头段全长约42公里。
中新网广州9月13日电 (记者 王坚)粤东城际铁路8标五工区项目12日迎来重大施工节点——龙湖站至汕头站特大桥54#至55#墩三线变四线道岔连续梁贝雷梁吊装作业完成。随着最后一榀超级贝雷梁精准就位,标志着全线的又一重难点控制性工程正式转入上部结构施工阶段,为后续工序高效推进奠定基础。
施工现场。中铁二局 供图
粤东城际铁路“一环一射线”是粤东地区城际铁路网的骨干通道,其中潮州东至汕头段全长约42公里。其建成后,将实现潮州、汕头、揭阳三市中心城区“半小时通勤圈”,对推动粤东区域一体化发展、促进经济社会协同进步具有重要意义。
据介绍,粤东城际铁路8标五工区项目由广东省铁投集团投资、中铁南方牵头管理、中铁二局承建。此次施工聚焦52#至58#墩道岔连续梁,全长196.2米,采用钢管柱+超级贝雷梁支架现浇方案。其中54#至55#墩跨径32.7米,墩高19米至21米,属大跨高墩体系,施工风险高、精度要求极严。
据了解,单组贝雷梁长度28.5米,最大吊重约21.7吨(含动载系数23.87吨),且作业区域紧邻既有铁路线,场地受限,安全压力倍增。面对复杂工况,项目团队科学选用220吨汽车吊,作业半径12米至16米,主臂长度39.2米;吊装前对地基换填0.5米级配碎石并分层压实,支腿下铺设钢板及砂垫层,确保承载力达标。

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