土工格室挡墙动力响应振动台试验研究
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1.新疆建筑科学研究院有限责任公司;2.长安大学;3.中国地震局(甘肃省)黄土地震工程重点实验室

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国家自然科学(编号:52278328);中建新疆建工科技研发课题(编号:65000022859700210197)


Shaking table test of the dynamic response of geocell retaining walls
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1.Xinjiang Academy of Building ScienceLimited liability company;2.China;3.School of Highway Engineering,Chang’an University,Xi’an;4.The Key Laboratory of lntelligent Construction and Maintenance of CAAC,Chang’an University,Xi''an;5.Key Laboratory of Loess Earthquake Engineering,China Earthquake Administration Gansu Province,Lanzhou,;6.Key Laboratory of Loess Earthquake Engineering, China Earthquake Administration (Gansu Province)

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    摘要:

    以土工格室挡墙支护边坡为研究对象,开展大型振动台模型试验,研究了地震动参数对格室应变和挡墙加速度的影响。研究结果表明:格室应变和加速度沿墙高呈非线性变化;随着幅值和频率的增加,格室应变和加速度逐渐增大,应变最大值出现在高程1H/2附近;在频率1~4Hz时格室应变和加速度增幅较小,超过4Hz时增幅则较大;三种方向下, XZ向作用时挡墙动力响应最为强烈;而持时影响较小;第1列加速度小于第2列加速度,土工格室挡墙对地震能量具有一定的衰减作用,表现良好的抗震性能。该研究成果对于土工格室挡墙的抗震设计及其实践应用具有一定的参考价值。

    Abstract:

    : A large-scale shaking table model test was carried out to study the effects of ground motion parameters on the cell strain and the acceleration of the retaining wall. The results show that the cell strain and acceleration change nonlinearly along the wall height. With the increase of amplitude and frequency, the cell strain and acceleration increase gradually, and the maximum strain appears near the elevation 11/2. The increase of cell strain and acceleration is small when the frequency is 1~4Hz, and larger when the frequency is more than 4Hz. Under the three directions, the dynamic response of the retaining wall is the strongest when the action is in the XZ direction. While the time of persistence has little effect. The acceleration of column 1 is less than that of column 2, and the retaining wall of the geocellular cell has a certain attenuation effect on the seismic energy, showing good seismic performance. The research results have certain reference value for seismic design and practical application of geocell retaining wall.

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  • 收稿日期:2025-02-18
  • 最后修改日期:2025-06-08
  • 录用日期:2025-08-14
  • 在线发布日期: 2026-02-09
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