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Title of Journal: KSCE J Civ Eng

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Abbravation: KSCE Journal of Civil Engineering

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Korean Society of Civil Engineers

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DOI

10.1016/0550-3213(73)90362-3

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1976-3808

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Applicability of deformationcompatible vertical d

Authors: SeokKyu Song SeongHyeon Shim YoungUk Kim SeokWon Lee
Publish Date: 2013/05/05
Volume: 17, Issue: 4, Pages: 691-698
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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 “DeformationCompatible 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 pilotscale 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

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