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国内众多公路隧道工程中,尚无超大直径泥水气压平衡盾构机近距离穿越高架桩基的先例。上海长江西路越江隧道新建工程φ15.43m盾构机将近距离连续穿越逸仙路高架和轨交3号线高架,与高架桩基最近距离仅1.05m,施工风险大。阐述了超大直径泥水平衡盾构机近距离穿越高架桩基应注意的问题及解决方法,可为类似施工提供借鉴。
In many domestic highway tunnel projects, there is no precedent of super-diameter mud pressure balance shield machine crossing overhead pile at short distance. The newly constructed φ15.43m shield tunneling machine for the new cross-river tunnel at Shanghai Changjiang West Road will continuously cross Yixian Road Elevated Elevated Road and Line No. 3 elevated with a distance of only 1.05m from the overhead pile foundation, resulting in a large construction risk. The problems and solutions to be paid attention to when super large diameter mud-water balanced shield machine traverses elevated pile foundation at short distance can be provided, which can provide reference for similar construction.