该桥最早修建于1896年,为槽形钢梁结构,1960年改造为无砟轨道钢筋混凝土连续板梁,目前,桥体钢筋混凝土保护层风化腐蚀、剥落严重,钢筋外露并锈蚀,存在较大安全隐患,严重影响铁路运输安全及桥下道路交通安全。
针对桥上分布八股线路、管线繁杂造成的安全风险,场地狭小,地下水位高带来的施工不便以及紧张的工期,项目打了双排止水帷幕、破碎既有桥混凝土地面并进行水泥注浆作业,有效封住了地下水,提高了地基承载力,为确保顶进对接精度奠定了基础。用叉车配合旧桥拆卸及搬运工作,在通道内铺设了枕木和钢板,确保了拆桥工作安全高效推进。全部顶进施工预计将于7月底完成。
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