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首页> 外文会议>Proceedings of Sessions of Geo-Denver 2000, Aug 5-8, 2000, Denver, Colorado >Anchored and Pre-tensioned Geosynthetics in Unpaved Roads
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Anchored and Pre-tensioned Geosynthetics in Unpaved Roads

机译：未铺设道路的锚固和预张土工合成材料

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Unpaved roads built over soft, weak subgrade have been used extensively in the Southeast Asian region as temporary site access roads, forest roads and low volume roads. In Singapore, unpaved roads are often preferred in military training areas for better concealment. Vehicular traffic on unpaved roads will cause the base layer and subgrade to deform vertically and laterally. In addition, stones will get pushed into the subgrade and pumping of fines into the base layer will occur under wet conditions, as there is no separation between the base material and weak subgrade. To stabilise unpaved roads, geosynthetics have been successfully used to improve the overall stability and trafficability of these roads. Geosynthetics placed at the interface between the base layer and the subgrade function as a separator as well as a reinforcement to improve the performance of weak subgrade. This paper presented the performance of geosynthetics in the stabilisation of unpaved roads in a laboratory model-tracking test. The effect of anchoring and pre-tensioning of geosynthetics would be examined. Six laboratory-tracking tests had been carried out for this purpose: one control test, three composite geotextile tests (un-anchored, anchored and with pre-tensioning) and two geogrid tests (un-anchored and anchored). During loading, subgrade settlement of each test was carefully monitored. To evaluate the performance of each stabilisation system, rut and heave resistance of each test were evalated and compared to the performance of the control test.
机译：在软弱的路基上修筑的未铺设道路在东南亚地区已广泛用作临时工地访问道路，森林道路和低流量道路。在新加坡，军事训练区通常优先选择未铺设路面的道路，以便更好地掩盖。未铺砌道路上的车辆通行将导致基层和路基在垂直和水平方向变形。此外，在潮湿条件下，石头会被压入路基，而细粉会被泵入基层，因为基层材料与弱路基之间没有分离。为了稳定未铺设的道路，土工合成材料已成功用于改善这些道路的整体稳定性和可通行性。放置在基础层和路基之间的界面的土工合成材料起到隔离器的作用，并起到增强弱路基性能的作用。本文在实验室模型跟踪测试中介绍了土工合成材料在未铺砌道路的稳定中的性能。将研究土工合成材料的锚固和预张紧的效果。为此，进行了六项实验室跟踪测试：一项对照测试，三项复合土工布测试（不锚固，锚固和预拉伸）和两项土工格栅测试（不锚固和锚固）。在加载过程中，对每个测试的路基沉降进行了仔细的监控。为了评估每个稳定系统的性能，评估了每个测试的抗车辙性和抗沉性并将其与对照测试的性能进行了比较。

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