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LIQUEFACTION MITIGATION OF SAND DEPOSITS BY GRANULAR PILES-AN OVERVIEW

机译:颗粒桩的砂土液化减轻-综述

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Soil liquefaction and associated ground failures have been a major source of damage during the past earthquakes. The risk of liquefaction and associated ground deformation can be reduced by various ground-improvement methods including the stone column (gravel drain) technique. Ground improvement by rammed granular piles (RGP) is considered one of the most reliable of these methods. This paper summarizes different mechanisms involved in the effective function of granular piles as a ground treatment method for liquefaction mitigation.Various mechanisms like: Drainage, Reinforcement, Storage, Dilation and Densification effects are briefly discussed. Generation and dissipation of the pore pressures in the granular pile reinforced ground under different earthquake conditions are quantified considering these different mechanisms. Granular piles are proved to be very effective for liquefaction mitigation.
机译:在过去的地震中,土壤液化和相关的地面破坏一直是破坏的主要来源。可以通过各种地面改良方法(包括石柱(砾石排水)技术)来降低液化和相关地面变形的风险。夯实颗粒桩(RGP)进行的地面改良被认为是这些方法中最可靠的一种。本文概述了粒状桩作为减轻液化的基础处理方法的有效作用所涉及的各种机理。简要讨论了各种机理,例如:排水,加固,储存,膨胀和致密化作用。考虑到这些不同的机理,对在不同地震条件下粒状桩加固地面中孔隙压力的产生和消散进行了定量。事实证明,粒状桩对于减轻液化非常有效。

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