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Liquefaction remediation by vertical drains with varying penetration depths

Brennan, A.J. / Madabhushi, S.P.G.

AbstractVertical drains have been used as remediation against earthquake-induced soil liquefaction for many years. These are seen to begin fluid dissipation from deeper deposits first. Drains are not necessarily installed to the full depth of the liquefiable layer. To determine the effect of this on the efficiency of drain systems, centrifuge test results are presented. It is seen that not installing all drains through the full liquefiable depth significantly retards their performance, due to the dominance of vertical dissipation. It will be shown that a standard design chart may over-predict an improvement in drain performance.

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Liquefaction remediation by vertical drains with varying penetration depths

Brennan, A.J. / Madabhushi, S.P.G.

AbstractVertical drains have been used as remediation against earthquake-induced soil liquefaction for many years. These are seen to begin fluid dissipation from deeper deposits first. Drains are not necessarily installed to the full depth of the liquefiable layer. To determine the effect of this on the efficiency of drain systems, centrifuge test results are presented. It is seen that not installing all drains through the full liquefiable depth significantly retards their performance, due to the dominance of vertical dissipation. It will be shown that a standard design chart may over-predict an improvement in drain performance.

Liquefaction remediation by vertical drains with varying penetration depths

Brennan, A.J. / Madabhushi, S.P.G.

AbstractVertical drains have been used as remediation against earthquake-induced soil liquefaction for many years. These are seen to begin fluid dissipation from deeper deposits first. Drains are not necessarily installed to the full depth of the liquefiable layer. To determine the effect of this on the efficiency of drain systems, centrifuge test results are presented. It is seen that not installing all drains through the full liquefiable depth significantly retards their performance, due to the dominance of vertical dissipation. It will be shown that a standard design chart may over-predict an improvement in drain performance.

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Title:

Liquefaction remediation by vertical drains with varying penetration depths

Contributors:

Brennan, A.J. (author) / Madabhushi, S.P.G. (author)

Published in:

Soil Dynamics and Earthquake Engineering ; 26 ; 469-475

Publication date:

2005-10-02

Size:

7 pages

ISSN:

DOI:

https://doi.org/10.1016/j.soildyn.2005.10.001

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Liquefaction , Liquefaction remediation , Vertical drains , Centrifuge

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