The foundation pit of the drainage pump station in the first terrace area of the Yangtze River often requires precipitation measures to control the impact of groundwater;When there are existing buildings around the foundation pit,it is necessary to control the impact of precipitation on the surrounding environment.In response to the existing practical problems,this article takes the foundation pit of a pump station near a bridge on the first terrace of the Yangtze River in Wuhan as an example.Based on the geological conditions of the foundation pit and the surrounding environment,a support form of drilled cast-in-place piles and internal supports is adopted.Combined with the TRD construction method,a bottom type waterproof curtain and a groundwater control scheme for dewatering in the pit are used.Finite element software is used to analyze the deformation effect of foundation pit dewatering on the adjacent bridge,and the results are compared with on-site monitoring.The results show that the strength and permeability of the TRD construction method's bottom type waterproof curtain can meet the engineering requirements of the pump station foundation pit,and can reduce the impact of precipitation on the horizontal and vertical settlement of the bridge,ensuring the safety of the surrounding buildings.
pump station foundation pitwater stop curtainTRD construction methodprecipitation
万方数据
维普
