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首页> 外文会议>American Society of Civil Engineers(ASCE) International Conference on Pipeline Engineering and Construction v.2; 20030713-20030716; Baltimore,MD; US >Experiments on Buried Pipe Using Backfill of Cover with Geosynthetics
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Experiments on Buried Pipe Using Backfill of Cover with Geosynthetics

机译：土工合成材料回填埋地管道的试验

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摘要

The behavior of buried flexible pipe is influenced to a considerable extent by the properties of the backfill materials. Recently, geosynthetics are commonly used in retaining wall for reinforcement. And flexible pipe is used for drainage in such embankment. However, the behavior of buried flexible pipe in the retaining wall reinforced by geosynthetics is not clear. In this paper, two types pit tests were conducted using a model flexible pipe having a diameter of 150 mm that was equipped with 20 bi-axial load cells in reinforced backfill cover by geosynthetics. In case of first type, as the model pipe subside vertical in the ground, the distribution of the earth pressure acting on the model pipe, and changes of earth pressure in the sand backfill without geosynthetics were measured. Second case is using sand backfill with geosynthetics. As a result, in case of second condition, it was found that the vertical earth pressure acting on the model pipe decreased by 25% of the overburden pressure obtained by the prism formula, and the vertical load distributed to around by arcing action.
机译：埋入式挠性管的性能在很大程度上受回填材料的性能影响。最近，土工合成材料通常用于挡土墙以进行加固。柔性管用于这种路堤的排水。然而，土工合成材料加固的挡土墙中埋入式挠性管的行为尚不清楚。在本文中，使用直径为150 mm的模型挠性管进行了两种类型的基坑测试，该挠性管通过土工合成材料在加固的回填盖层中装有20个双轴称重传感器。在第一种类型的情况下，由于模型管在地面上垂直沉降，因此测量了作用在模型管上的土压力的分布以及未使用土工合成材料的回填砂土中土压力的变化。第二种情况是使用具有土工合成材料的回填砂。结果，在第二条件的情况下，发现作用在模型管上的垂直土压力降低了由棱镜公式获得的上覆压力的25％，并且垂直负荷通过电弧作用分布到周围。

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