Safety Risk Control for the Shaped Deep Foundation Pit in Water-rich Sand Layer at Guangzhou Metro Ruyifang Station
Based on the foundation pit project of Ruyifang Station of Guangzhou Railway Transportation Line 11,which is 24.5 m away from the Pearl River at the closest distance,the thickness of the sand layer is about 17.0 m,the water table is high,the foundation pit is in anisotropic shape,and it is constructed by the open excavation and smooth working method.By analyzing the safety risks in the investigation stage,design stage and construction stage,putting forward effective control measures,strictly controlling the construction quality of the enclosure structure during the construction process,refining the sequence of pit excavation and excavation steps,scientific descending,rapid construction of the structure and other technical and managerial measures,it ensures that the deformation and settlement of the foundation pit construction and operation station are safe and controllable,and that the whole station is successfully completed.
subway stationwater-rich sand layershaped deep foundation pitmonitoring and measurementsettlement and deformationrapid constructionemergency disposalrisk control
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