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Applicability of deformation-compatible vertical drain
Abstract It has been noted that the discharge capacity of an installed vertical drain rapidly decreases with consolidation mainly due to flow area reduction and bending and/or kinking of the drain. To solve these two problems, this study attempts to develop the “Deformation-Compatible Vertical Drain (DCVD)”, with a new concept of replacing the existing stiff core with a spring structure. A modified triaxial test was conducted to investigate whether DCVD can solve the problem of flow area reduction. A centrifuge model test was conducted to investigate the deformation compatible function of the DCVD, as it interacts with the ground settlement and deforms in a vertical direction only. Lastly, a pilot-scale chamber test was carried out to evaluate the performance and adaptability of DCVD when applying it in the field. The results of three experimental tests demonstrate that DCVD does not show the bending and kinking of the drain even at a large ground settlement, and that it secures the flow area even at a high lateral pressure. Finally, it is considered that if the DCVD designed in this study is produced using the proper materials, the two problems observed in the existing vertical drains can be solved.
Applicability of deformation-compatible vertical drain
Abstract It has been noted that the discharge capacity of an installed vertical drain rapidly decreases with consolidation mainly due to flow area reduction and bending and/or kinking of the drain. To solve these two problems, this study attempts to develop the “Deformation-Compatible Vertical Drain (DCVD)”, with a new concept of replacing the existing stiff core with a spring structure. A modified triaxial test was conducted to investigate whether DCVD can solve the problem of flow area reduction. A centrifuge model test was conducted to investigate the deformation compatible function of the DCVD, as it interacts with the ground settlement and deforms in a vertical direction only. Lastly, a pilot-scale chamber test was carried out to evaluate the performance and adaptability of DCVD when applying it in the field. The results of three experimental tests demonstrate that DCVD does not show the bending and kinking of the drain even at a large ground settlement, and that it secures the flow area even at a high lateral pressure. Finally, it is considered that if the DCVD designed in this study is produced using the proper materials, the two problems observed in the existing vertical drains can be solved.
Applicability of deformation-compatible vertical drain
Song, Seok-Kyu (author) / Shim, Seong-Hyeon (author) / Kim, Young-Uk (author) / Lee, Seok-Won (author)
KSCE Journal of Civil Engineering ; 17 ; 691-698
2013-05-01
8 pages
Article (Journal)
Electronic Resource
English
Applicability of deformation-compatible vertical drain
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