市域(郊)铁路成都至德阳线启动预制梁架设|性瘾校草被c呻吟双腿大张bl
中新网成都11月26日电 (记者 刘忠俊)记者26日从成都轨道集团获悉,市域(郊)铁路成(都)至德(阳)线(以下简称“成德线”)预制梁架设作业已拉开序幕,标志着该条线高架段建设进入快速推进阶段。

据了解,作为“轨道上的都市圈”关键项目,成德线采用“工厂预制、现场架设”的“搭积木”式建桥工艺,相较于传统现场浇筑,可大幅提升施工效率、缩短工期,同时减少对周边环境的影响。预制梁形似中空“水泥盒子”,在保障承重强度的同时有效减轻自重,是高架段建设的核心构件。
成德线高架段全长约45.4公里,占全线总长的64%,需架设预制梁1156片,这些构件由三星堆、濛阳、天府旌城三个制梁场集中生产。针对三星堆梁场所在的川西平原软土区域承载力不足的难题,建设方采用复合地基加固技术,通过钢管桩深插硬土层、顶部浇筑条形承载结构的方式,解决了松软地基堆放重型预制梁的安全问题。

为保障工程质量,项目搭建智慧梁场管理平台,为每片预制梁建立专属“成长档案”,通过数字化管控生产关键参数,实现质量全程可控、数据可追溯。截至目前,高架段石亭江大桥、跨三星堆互通连续梁桥已全桥合龙,鸭子河大桥主跨合龙,预制梁架设同步展开;地下段9座车站完成主体结构封顶,2座车站进入机电安装和装饰装修阶段;盾构累计掘进33.5公里,完成总量的74.8%,8条单线隧道已贯通。
成德线是连接成都与德阳的重要轨道交通纽带,项目建成后将大幅缩短两地时空距离,为区域产业协同、人员往来提供高效运输支撑。下一步,项目将冲刺全线“桥通”等关键节点,推动“轨道上的都市圈”加速成型。(完)
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