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《Journal of Hydraulic Engineering》 2004-03
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Case study on consolidation of soft foundation by means of vacuum preloading

YAN Shu-wang, ZHU Ping, LIU Run (Tianjin University, Tianjin 300072, China)  
Vacuum preloading is an effective technology for consolidating soft foundation. The successful application of this technology to a highway project is presented. The vacuum pressure of 80kpa is applied for 90 days to consolidate the soft clay layer with thickness of 20m. The settlement is about 1.5m. The average degree of consolidation estimated according to the observation data is about 90%. The undrained shear strength of the soil is elevated and the water content and pore water pressure are remarkably reduced after vacuum preloading. The bearing capacity of the foundation reaches 80kpa. The procedure of implementation and the in situ monitoring data are introduced in detailed.
【CateGory Index】: U655
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