In this paper, the seismic performance of wall-type gravel and rubber drains as a liquefaction countermeasure in silty sand has been addressed using a series of 1 g shaking table tests. In these tests, the liquefaction resistance of silty sand was studied by changing soil relative density, silt content, number of walls, and materials of drainage walls. In order to evaluate shear wave propagation, the generation and dissipation of pore water pressure (PWP), and the ground surface settlement, various accelerometers, displacement and PWP transducers were placed. The obtained results indicated that an increase in the relative density and the number of wall-type gravel and rubber drains in liquefiable silty sand reduces the settlement, liquefaction-induced deformations, as well as the excess PWP and eventually improves the liquefaction resistance. Totally, it can be noted that the reinforced silty sand with wall-type gravel drains revealed less excess PWP and settlement than that with wall-type rubber drains.

在本文中，使用一系列 1 g 振动台试验解决了壁式砾石和橡胶排水沟作为粉质砂液化对策的抗震性能。在这些试验中，通过改变土壤相对密度、淤泥含量、墙的数量和排水墙的材料来研究粉砂的抗液化能力。为了评估横波传播、孔隙水压力 (PWP) 的产生和消散以及地表沉降，放置了各种加速度计、位移和 PWP 换能器。所得结果表明，可液化粉砂中相对密度和壁式砾石和橡胶排水管数量的增加减少了沉降、液化引起的变形以及多余的PWP，最终提高了抗液化能力。