PERFORMANCE OF BAND SHAPED VERTICAL DRAIN FOR SOFT HAI PHONG CLAY

SOILS AND FOUNDATIONS

KOJI SUZUKI¹  HIROKI TAKEUCHI² 

[1] Design Department, Civil Engineering General Headquarter, Toa Corporation;Vietnam Office, International Division, Toa Corporation

关键词: consolidation;    PVD;    soft ground;    vertical drain;    (IGC: E2/H7);   

DOI  :  10.3208/sandf.48.577

学科分类：建筑学

来源: Japanese Geotechnical Society / Jiban Kogakkai

【 摘 要 】

References(21)Performance of band shaped prefabricated vertical drain (PVD) installed into soft Hai Phong clay with a 110 cm triangle arrangement is reported together with the engineering properties of the clay investigated by field and laboratory tests. Stationary piston sampling was carried out to obtain high quality undisturbed soil samples for laboratory tests and reliable engineering characteristics of the clay. It was assumed for the design of PVD spacing and preloading that the ratio of apparent value of horizontal coefficient of consolidation ch(ap) to vertical coefficient of consolidation cv is equal to 1.0. The settlement monitored in the field, which clearly showed that the actual settlement was faster than expected, resulted in the ch(ap) value 1.5 times as much as cv determined by the laboratory test.

【 授权许可】

Unknown