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  Internal stability of ground improved by Geosynthetics Reinforced Pile Supported (GRPS) under high embankment
Tác giả hoặc Nhóm tác giả: Do Huu Dao - Pham Anh Tuan
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Nơi đăng: VietNam-France International Conference: Safety of small Dams and Dikess
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; Số: ISBN: 978-604-82-1322-0;Từ->đến trang: 105-113;Năm: 2014
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
ABSTRACT: Geosynthetic Reinforced and Pile Supported (GRPS) System, an in-situ soil stabilization technique using geosynthetic and soil cement (SC) pile, is often applied to improved soft soil. An improved-ground current design procedure assumes have two failure patterns involve to external and internal stabilities. For the external stability, a collapse failure pattern where the soil cement piles tilt like dominos could take place instead of a sliding failure pattern. For the internal stability, GRPS system shows shear, bending and tensile failure mode, depending not only on the ground and loading condition but also more factors interacting between piles-geosynthetic-soil as on the location of each pile, improvement area ratio, strength of soil cement pile, place and a number of geosynthetic. However, the current design does not incorporate the effect of these failure mode, but not unique shear failure mode. In the study, the paper analysis and describes the failure modes of GRPS system, a proposed and complement simple calculation for failure modes, examine impact of high embankment. Keywords: GRPS, internal stability, failure modes, calculation, numerical.
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ABSTRACT
ABSTRACT: Geosynthetic Reinforced and Pile Supported (GRPS) System, an in-situ soil stabilization technique using geosynthetic and soil cement (SC) pile, is often applied to improved soft soil. An improved-ground current design procedure assumes have two failure patterns involve to external and internal stabilities. For the external stability, a collapse failure pattern where the soil cement piles tilt like dominos could take place instead of a sliding failure pattern. For the internal stability, GRPS system shows shear, bending and tensile failure mode, depending not only on the ground and loading condition but also more factors interacting between piles-geosynthetic-soil as on the location of each pile, improvement area ratio, strength of soil cement pile, place and a number of geosynthetic. However, the current design does not incorporate the effect of these failure mode, but not unique shear failure mode. In the study, the paper analysis and describes the failure modes of GRPS system, a proposed and complement simple calculation for failure modes, examine impact of high embankment. Keywords: GRPS, internal stability, failure modes, calculation, numerical.
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