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首页> 外文会议>World conference on earthquake engineering;WCEE >A PROPOSAL TO ARRANGE LARGE-SCALE WATER-SATURATEDSANDS FOR LIQUEFACTION-RELATED SHAKING TABLE TESTS
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A PROPOSAL TO ARRANGE LARGE-SCALE WATER-SATURATEDSANDS FOR LIQUEFACTION-RELATED SHAKING TABLE TESTS

机译：关于液化相关振动台测试的大型水饱和砂池的建议

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摘要

This paper presents construction experiments of test soils for shaking table tests, especially for large-scalesoil model liquefaction-related shaking table tests. In liquefaction-related shaking table tests using largescalesand boxes, quality control of saturated sands is one of critical issues. The target is to makehomogeneous saturated sand soils. Soil models were arranged by scattering sand through developedapparatus on a vibrating screen in the water of a steel box (length 6 meters, width 3 meters and height 2.5meters). The study consists experiments Ⅰ and Ⅱ. In the experiment Ⅰ, Nikko Silica Sand No.5 was used.The soils were arranged four times by scattering dry sand or wet sand. In addition to one-layerhomogeneous soils, two-layer homogeneous soils were arranged through densifying the sand of lowerlayer by oscillator excitations. For comparison, the soil was directly pored without using the developedapparatus and the vibrating screen. In the experiment Ⅱ, Nikko Silica Sand No.3 & No.7 were used. Thesoils were arranged controlling traveling velocities of sand scattering system. The quality of the soils wasevaluated as relative density determined by samples by in-situ freezing method. From the results ofexperiments Ⅰ and Ⅱ, the proposed method can apply both wet sands and dry sands and can makehomogeneous one-layer and two-layer test soils. There is possibility of controlling relative densities bychanging the traveling velocities of the sand scattering system.
机译：本文介绍了用于振动台试验的测试土壤的施工实验，特别是用于与土壤模型液化相关的大型振动台试验。在使用大型砂箱进行的与液化有关的振动台测试中，饱和砂的质量控制是关键问题之一。目标是使均质的饱和砂土。土壤模型是通过在振动的筛子上在钢箱水中（长6米，宽3米，高2.5米）中通过发达的设备将沙子散布而布置的。本研究包括实验Ⅰ和Ⅱ。在实验Ⅰ中，使用日光5号硅砂。通过散布干砂或湿砂将土壤布置四次。除一层均质土壤外，还通过振荡激发使下层砂致密化，从而形成了两层均质土壤。为了进行比较，不使用发达的设备和振动筛就直接对土壤打了孔。在实验Ⅱ中，使用3号和7号日光硅砂。安排土壤以控制沙粒散布系统的行进速度。用原位冷冻法通过样品测定的相对密度来评价土壤的质量。从实验Ⅰ和Ⅱ的结果来看，该方法既可以适用于湿沙，也可以适用于干沙，可以制成均质的一层和两层试验土。有可能通过改变沙粒散布系统的行进速度来控制相对密度。

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  • 会议地点 Vancouver(CA);Vancouver(CA)
  • 作者

    Hatsukazu MIZUNO; Tsutomu HIRADE; Akio ABE;

  • 作者单位

    Japan Association for Building Research Promotion Tokyo Japan. Email:mizuno@kksk.or.jp;

    Building Research Institute Tsukuba Japan. Email: hirade@kenken.go.jp;

    Engineering Sect. Tokyo Soil Research Co. Ltd. Tsukuba Japan. Email: abe@tokyosoil.co.jp;

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