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城市道路交叉口沥青路面受力分析

, PP. 41-45

Keywords: 道路工程,受力分析,有限元法,沥青路面,剪应力

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Abstract:

城市交叉口路面由于车辆制动启动频繁,交通渠化严重,导致车辙病害严重。针对此现象,进行了交叉口沥青路面的有限元受力分析。在有限元假定的基础上,确定了3种荷载工况下的轮胎作用面积和接地压力分布,从车辆荷载、环境温度、车辆速度、路面层厚度、面层基层模量组合等方面对路面受力情况进行敏感度分析。结果表明城市交叉口路面的剪应力是导致车辙病害严重的主要原因,车辆重载及高温低速的行驶状况更加重了病害,交叉口路面结构材料的设计应着力于提高顶层材料的车辙抵抗力。

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