Long-term Evenness of Pavements with Respect to Soil Deformations
Long-term Evenness of Pavements with Respect to Soil Deformations
复制标题
路面的长期平整度与土壤变形的关系
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
K.
中科院分区：
文献类型：
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作者：
Jürgen Grabe;K.
今天，人们对舒适和快速旅行的要求继续增加。因此，有必要确保路面的长期平整度。平整度取决于底土的均质性。实测结果表明，土体刚度和路面不平度的空间变化具有相同的统计特征。可以看出，路面的平整度是土体刚度、车辆通过次数和动荷载空间变化的函数。动载取决于车辆的动态特性、车速和路面的平整度。给出了一个简单的数值模型，用来说明这种不平度随车辆通过次数而发展的机理。这提供了一个机会，以建立必要的要求，可容忍的空间变化的土壤硬度相对于提高驾驶舒适性的要求。
Today’s requirements of comfortable and fast travelling continue to increase. Thus it is necessary to secure a long-term evenness of the pavement. The evenness is depending on the homogeneity of the subsoil. Measurements indicate that the spatial variation of soil stiffness and pavement unevenness have the same statistical characteristics. It can be posted that the evenness of the pavement is a function of the spatial variation of soil stiffness, number of vehicle passes and dynamic loads. The dynamic loads depend on the dynamic characteristic of the vehicles, their velocity and the evenness of the pavement. A simple numerical model is outlined to demonstrate this mechanism of developing unevenness with number of vehicle passes. This gives a chance to establish necessary requirements for the tolerable spatial variation of soil stiffness with respect to the raising requirements of driving comfort.