在以地下连续墙作为围护结构的地下工程中，当明挖法与盖挖法结合施工时，由于明盖挖交界面处土体变形差异较大，导致目前的地连墙接头形式容易产生渗水。针对某地铁车站面临的上述实际问题，充分利用明盖挖交界面处的剪切应力，在两幅地连墙之间设置密封装置，形成一种新型有效的明挖法和盖挖法地连墙接头处防渗水措施。与传统措施相比，该措施的经济性、质量可靠度明显提高，可为今后类似工程问题提供借鉴。%Waterproofing is easy to occur due to a large deformation of soil mass at the joints of open excavation and cov-ered excavation for underground continuous wall during the construction of underground engineering which is based on the methods of open excavation and covered excavation in the process of using underground continuous wall as retaining struc-ture.In connection with the above real problem that a subway station is taking,we should fully take advantage of the shear-ing stress at the joints of open excavation and covered excavation to set up sealing equipment between the two underground continuous walls,and thus a new and effective waterproofing measure is formed.Compared with traditional measures,its e-conomic efficiency and quality reliability is obviously improved,which could provide references for similar projects.
展开▼
