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1前育为减少铁路运输运能损失,顶进施工法因其诸多优点被大量运用到既有线增建箱形桥的工程中。准备工作坑是其法施工中必不可少的工序,而在市区项目中因受地貌控制,箱形桥预制工作坑往往都成深基坑形式,支护自然成为施工保安全和进度的重要环节,应对经济有效地基坑支护方法进行研究。本文就杭州市望江路下穿铁路箱形桥工程的基坑支护施工方法作一粗浅探讨。
In order to reduce the loss of railway transport capacity, the jacking construction method has been extensively applied to the construction of box-shaped bridges by existing lines because of its many advantages. The pit for preparation work is an indispensable process in the construction of its method. Due to the topographic control in the urban project, the prefabricated work pits of the box-shaped bridge are often in the form of deep foundation pit, and the support naturally becomes the important point of construction safety and progress Link, should be economical and effective support method of foundation pit research. In this paper, Wangjiang Road, Hangzhou City, under the box-girder bridge construction of the foundation pit support construction method for a brief discussion.