2003•Journal of Zhejiang University(Engineering Science)Requires access
Analysis of field test data on pore pressure in vacuum drainage preloading
Cen Yang
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Abstract
Factors that influence variation of pore pressure in vacuum drainage preloading were determined and analyzed to develop a method to obtain the distribution of the seepage field of negative pore pressure along the depth of the soft soil foundation. Some vacuum drainage preloading projects were analyzed using this method and the regularity of distribution of the seepage field of negative pore pressure along the depth of soft soil foundation was determined.When prefabricated vertical drains(PVDs)were installed to a depth less than 20 m,the distribution along depth was almost consistent and the value was greater than 50% of applied vacuum pressure.When PVDs were installed to a depth more than 20 m,the distribution presented a certain extent dispersion.