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首页> 外文会议>Proceedings of 5th China-Japan workshop on pavement technologies >Influence of Moving Load to Extend the Deformation of Asphalt Pavement
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Influence of Moving Load to Extend the Deformation of Asphalt Pavement

机译：移动载荷对沥青路面变形的影响

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To examine the moving of the leg load of the aircraft and the behavior of the pavement by the FWD load, two types of strain gauge are laid under the asphalt pavement. KM type strain gauge and fiber-optic type FBG strain gauge are laid on underside of binder course, underside of asphalt-stabilized layer and subgrade surface. As for the amplitude of strain vibration by the moving leg load, the biggest one is measured at underside of asphalt stabilized base layer. From this result, it is assumed that the failure criterion of asphalt-stabilized layer effects on pavement in whole. The strain corrugation which occurs on the underside of asphalt mixture shows two piles due to the leg load, but as for the one on the subgrade, it shows one pile and the loading time becomes long. Conventional pavement design establishes the standard on the surface of subgrade under the center of the leg load, and the validity of the design method was confirmed. The calculative strain obtained from staticanalysis using elastic modulus which is back-calculated by FWD deflection gave close agreement with the measurement strain obtained from moving load test of the aircraft at 5km per hour. Also, the measurement strain inside pavement from FWD load-test agreed with the calculated strain from dynamic analysis than that of statiC analysis. From the above, on the structure evaluation of asphalt pavement, it is necessary to establish the approach which considers the loading time.
机译：为了检查飞机的腿部载荷的移动以及FWD载荷对路面的影响，在沥青路面下铺设了两种应变仪。 KM型应变仪和光纤型FBG应变仪放置在粘结剂层，沥青稳定层和路基表面的下面。至于由动腿载荷引起的应变振动幅度，最大的一个是在沥青稳定基层的下侧测量的。根据该结果，可以认为沥青稳定层的破坏标准对路面整体有影响。沥青混合料下侧发生的应变波纹由于腿部载荷而显示为两个桩，但对于路基上的应变波纹而言，则显示为一桩并且加载时间变长。常规路面设计在支腿荷载中心下的路基表面建立标准，并确认了设计方法的有效性。通过弹性模量反算的使用弹性模量的静态分析获得的计算应变与飞机每小时5 km的移动载荷试验获得的测量应变非常吻合。另外，FWD荷载试验中路面内部的测量应变与动态分析计算的应变相比，与statiC分析的应变一致。综上所述，在沥青路面结构评估中，有必要建立一种考虑加载时间的方法。

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