
5日凌晨0时30分,随着“章丘南跨京沪高速特大桥连续梁合龙段浇筑开始”的口令发出,工人们开始有条不紊地开展混凝土浇筑作业。经过3个多小时的奋战,全长289.5米,主跨136米的济莱高铁全线跨度最大悬浇连续梁顺利合龙。
据悉,章丘南跨京沪高速特大桥全长1439.737米,该桥梁桩基涉及岩溶地层,施工风险高,难度大。由于连续梁跨度大,质量重,为确保连续梁主墩承载力达到要求,施工过程中加大了主墩桩径和长度,桩径达到了1.8米,桩长81.5米,较为少见。此外,大桥中跨合龙段位于京沪高速公路行车道上方,车流量大,施工安全风险高。

面对工期紧、标准高、任务重等难题,济南轨道交通集团济莱高铁建设项目部全程加强质量管控和对重大安全风险源的监管,施工单位中铁十七局从工程建设伊始就抽调人员,成立现场专项施工管理指挥小组,跟班作业,靠前指挥。安排专人与交警、路政单位对接,保证工程建设全过程安全。
在参建各方共同努力下,工程建设进度顺利推进。目前,济莱高铁全线27处悬浇连续梁已完成合龙13处,王家峪、石磨顶、有兰峪、白家庄、马家庄等多座隧道已实现贯通,为下一步架梁和铺轨工作打下了坚实基础。
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