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首页> 外文期刊>Geotextiles and Geomembranes >Seismic performance of a whole Geosynthetic Reinforced Soil - Integrated Bridge System (GRS-IBS) in shaking table test
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Seismic performance of a whole Geosynthetic Reinforced Soil - Integrated Bridge System (GRS-IBS) in shaking table test

机译：整体土工加筋土-集成桥系统（GRS-IBS）在振动台试验中的抗震性能

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摘要

A scaled plane-strain shaking table test was conducted in this study to investigate the seismic performance of a Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS) with a full-length bridge beam resting on two GRS abutments at opposite ends subjected to earthquake motions in the longitudinal direction. This study examined the effects of different combinations of reinforcement stiffness J and spacing S-v on the seismic performance of the GRS-IBS. Test results show that reducing the reinforcement spacing was more beneficial to minimize the seismic effect on the GRS abutment as compared to increasing the reinforcement stiffness. The seismic inertial forces acted on the top of two side GRS abutments interacted with each other through the bridge beam, which led to close peak acceleration amplitudes at the locations near the bridge beam. Overall, the GRS-IBS did not experience obvious structure failure and significant displacements during and after shaking. Shaking in the longitudinal direction of the bridge beam increased the vertical stress in the reinforced soil zone. The maximum tensile forces in the upper and lower geogrid layers due to shaking happened under the center of the beam seat and at the abutment facing respectively.
机译：在这项研究中，进行了按比例的平面应变振动台试验，以研究土工合成材料加筋土集成桥系统（GRS-IBS）的抗震性能，全长桥梁搁置在遭受地震的两端的两个GRS基台上沿纵向运动。这项研究检查了不同的配筋刚度J和间距S-v组合对GRS-IBS地震性能的影响。测试结果表明，与增加钢筋刚度相比，减小钢筋间距更有利于最大程度地减小对GRS基台的地震影响。作用在两侧GRS基台顶部的地震惯性力通过桥梁互相作用，从而导致在靠近桥梁的位置处出现接近的峰值加速度振幅。总体而言，GRS-IBS在振动过程中和振动后均未出现明显的结构破坏和明显位移。沿桥梁的纵向振动会增加加筋土区域的垂直应力。由于晃动而在上部和下部土工格栅层中产生的最大拉力分别发生在梁座的中心下方和桥基面处。

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  • 来源
    《Geotextiles and Geomembranes》 |2020年第3期|315-330|共16页
  • 作者

  • 作者单位

    Tongji Univ Key Lab Geotech & Underground Engn Minist Educ Shanghai 200092 Peoples R China|Tongji Univ Coll Civil Engn Dept Geotech Engn Shanghai 200092 Peoples R China;

    Tongji Univ Coll Civil Engn Dept Geotech Engn Shanghai 200092 Peoples R China;

    Univ Kansas Dept Civil Environm & Architectural Engn Lawrence KS 66045 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Geosynthetics; Abutment; Bridge; Earthquake; Geosynthetic reinforced soil; Seismic; Shaking table;

    机译：土工合成材料;邻接;桥;地震;土工合成材料加筋土;地震摇床;

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