(1)面层面层是直接同行车和大气接触的表面层次，它承受较大的行车荷载的

(1)面层
面层是直接同行车和大气接触的表面层次，它承受较大的行车荷载的垂直力、水平力和冲击力的作用，同时还受到降水的浸蚀和气温变化的影响。因此，同其他层次相比面层应具备较高的结构强度，抗变形能力，较好的水温稳定性，而且应当耐磨，不透水；其表面还应有良好的抗滑性和平整度。
(2)基层
基层主要承受由面层传来的车辆荷载的垂直力，并将力扩散到下面的垫层和土基中去。基层是路面结构中的承重层，它应具有足够的强度和刚度，并具有良好的扩散应力的能力。
(3)垫层
垫层介于土基与基层之间，它的功能是改善土基的湿度和温度状况，以保证面层和基层的强度、刚度和稳定性不受土基水温状况变化所造成的不良影响。另一方面的功能是将基层传下的车辆荷载应力加以扩散，以减小土基产生的应力和变形；同时也能阻止路基土挤入基层中，影响基层结构的性能。

結果 (英文) 1:

(1) surfaceSurface layer is surface level of direct contact with the road and air, which under high traffic load of the vertical, the level and impact of the role and impact of erosion by precipitation and temperature changes. Therefore, compared with the other level surface should possess high structural strength, resistance to deformation, good temperature stability, and should wear-resistant, impervious; it should also have good resistance to sliding and surface roughness.(2) grass-rootsGrass-roots mainly from vehicle load of vertical force from the surface, and spread to the pad and soil below. The grass-roots level is load-bearing layer, it must be of sufficient strength and stiffness, and has a good ability to spread stress.(3) beddingBetween the layer of soil and grass-roots, its function is to improve soil moisture and temperature conditions, to ensure that the surface layer and the grass-roots strength, stiffness and stability is not affected by soil temperature changes caused by the adverse effects. Another function is the primary vehicle under loading stress to be spread, to reduce the stress and deformation of soil also can stop soil into the grass-roots level, affecting the performance of infrastructure.

結果 (英文) 2:

(1) the surface layer of
the surface layer and the surface of the car is the direct peer-level contact with the atmosphere, it is the role of a large bear traffic loads vertical force, horizontal force and impact, but also affected by temperature changes of erosion and precipitation. Therefore, compared with other surface layer should have a high level of structural strength, resistance to deformation, good temperature stability, and should wear impervious; the surface should have a good skid resistance and flatness.
(2) Primary
Primary mainly bear vertical forces coming from the surface layer of vehicle loads and forces spread to the base below the cushion and earth to go. Primary is the load-bearing layer of the pavement structure, it should have sufficient strength and rigidity, and has good ability to diffusion of stress.
(3) cushion
cushion between the soil and the grass-roots group, its function is to improve the humidity and temperature conditions soil base, in order to ensure the strength of the surface layer and the base layer, rigidity and stability against temperature soil base status change resulting in adverse effects. On the other hand function is to pass under the load of the vehicle grassroots to stress diffusion, to reduce the stress and deformation of subgrade produced; but also to prevent the subgrade soil squeeze into the base layer, affect the performance of grassroots structures.

結果 (英文) 3:

(1) surface layerThe surface layer is the surface level car and air direct peer contact, vertical force and horizontal force and impact force it under vehicle load of the larger role, but also is affected by rainfall erosion and climate change. Therefore, compared with other levels of surface layer should have a high structural strength, anti deformation capacity, better water temperature stability, and should be wear-resistant, waterproof; the surface should also have a good degree of smoothness and smoothness.(2) basic levelThe vertical force base under vehicle loads by the surface layer came, and the force is spread to the following layer and subgrade to. The base layer is the bearing layer of pavement structure, it should have enough strength and stiffness, and has the ability of good diffusion stress.(3) cushionBetween the cushion between subgrade and base, its function is to improve the soil moisture and temperature conditions, to ensure that the adverse effects of the base layer and the surface layer strength, stiffness and stability is not affected by the situation caused by the temperature variation of subgrade. On the other hand is the function of vehicle load transfer under the stress of primary diffusion, to reduce the stress and deformation of subgrade; also can prevent subgrade soil into the base, affect the performance of base structure.