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APPLICATION OF ADVANCED SENSORS TO MODEL TESTS ON BEARING MECHANISM OF GROUP PILE

机译:先进传感器在群桩承载机理模型试验中的应用

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摘要

Model pile loading and transparent observation in dry silica sand were conducted with applying confining pressure of 50 ~ 200kPa at the model ground surface to investigate the behavior of a pile group.The pile group consists of 9 cylindrical model piles of 40mm in diameter in most tests or 3 rectangular parallelepiped model piles in the transparent observation.And two kinds of pile spacings were used in the models:200mm and 100mm between pile centers.To investigate the interaction among group piles,2 kinds of advanced sensors were installed in addition to strain gauges inside the model piles:tactile sensors to measure the pressure distribution in the ground and colored sand layer with PIV analysis to reveal the ground deformation.The tests results showed that the pile group with a narrow l00mm spacing affected a wider area of the ground and the interaction was more significant below tips.These affected the beating behavior of the pile group.
机译:在模型地面上施加50〜200kPa的围压,在干燥的硅砂中进行模型桩加载和透明观测,以研究桩组的性能。在大多数测试中,桩组由9个直径40mm的圆柱模型桩组成。或在透明观测中使用3个长方体模型桩。在模型中使用了两种桩间距:桩心之间的200mm和100mm。为研究群桩之间的相互作用,除应变仪外还安装了2种先进的传感器模型桩内部:触觉传感器通过PIV分析来测量地面和有色沙层中的压力分布,以揭示地面变形。测试结果表明,间距为100mm的桩组会影响较大的地面区域,提示下方的交互作用更为显着,这些影响了桩组的跳动行为。

著录项

  • 来源
  • 会议地点 Chengdu(CN)
  • 作者单位

    Department of Civil Engineering,The University of Tokyo,Hongo 7-3-1,Bunkyo-ku Tokyo,113-8656,Tokyo;

    Department of Civil Engineering,The University of Tokyo,Hongo 7-3-1,Bunkyo-ku Tokyo,113-8656,Tokyo;

    Department of Civil Engineering,The University of Tokyo,Hongo 7-3-1,Bunkyo-ku Tokyo,113-8656,Tokyo;

    Department of Civil Engineering,The University of Tokyo,Hongo 7-3-1,Bunkyo-ku Tokyo,113-8656,Tokyo;

    Department of Civil Engineering,The University of Tokyo,Hongo 7-3-1,Bunkyo-ku Tokyo,113-8656,Tokyo;

    Department of Civil Engineering,The University of Tokyo,Hongo 7-3-1,Bunkyo-ku Tokyo,113-8656,Tokyo;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土力学、地基基础工程;
  • 关键词

    group pile; interaction; tactile sensor; PIV;

    机译:群桩相互作用;触觉传感器PIV;

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