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Behaviors of Embankment on PVD-Improved Haiphong Clay

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Soil Mechanics and Foundation Engineering Aims and scope

This paper presents the behaviors of embankments on clay deposits improved by prefabricated vertical drains (PVD) in the north-east coastal plain of Vietnam. The deposit consists of soft Holocene clay (approximately 20 m) and stiff Pleistocene clay (approximately 20 m) on a thick sand layer. PVDs with various spacing were fully installed into the soft clay. Settlement behaviors mostly show a reverse-S curve that consists of three phases: small recompression, rapid and large settlement, and delayed settlement. When the spacing is smaller than 1.0 m, the recompression behavior disappears because of soil disturbance during installation. A nearly elastic behavior is observed during construction; thus, the ratios of lateral displacement to settlement (0.02-0.13) and of the excess pore pressure to the applied pressure (0.1-0.7) are significantly small.

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Authors and Affiliations

  1. GS Engineering & Construction Co., Ltd., Seoul, South Korea

    W. Y. Jang

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  1. W. Y. Jang
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Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 1, p. 35, January-February, 2018.

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Jang, W.Y. Behaviors of Embankment on PVD-Improved Haiphong Clay. Soil Mech Found Eng 55, 120–126 (2018). https://doi.org/10.1007/s11204-018-9513-5

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  • DOI: https://doi.org/10.1007/s11204-018-9513-5

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