路面平整度（Pavement Evenness）.docVIP

路面平整度（Pavement Evenness） Pavement Evenness Road roughness is the most intuitionistic index to reflect the quality of a project. The smoothness and comfort of a road drive can reflect the whole effect of a road opening. Using new technology and new technology to improve pavement evenness is the goal in construction. This paper mainly expounds the factors affecting the smoothness of the road surface and the solutions. 1 the influence of subgrade and surface on smoothness 1.1 effects of subgrade and subbase of bituminous pavement smoothness In road construction, with a bulldozer peacefully in straight machine combined with artificial per 20m a section, a section of each curve segment 10m to control the elevation, level actual operation level depends on whether to meet the requirements of grader manipulator. Practice has proved that no matter how high the manipulator level is, the experience of operating machinery alone is not enough. At a certain point or individual section, the roughness is different and can not meet the requirements. After compaction, the roughness of the surface is reflected to the base and the surface, which leads to poor evenness of the road surface. Effect of 1.2 base construction of bituminous pavement smoothness In the construction of two ash macadam or cement Graded Macadam Base, in order to meet the requirements of smoothness, the paver with fully automatic leveling is generally used. In the construction of high-grade highways, two paver are often required to be paved, and flatness can meet the requirements. The stable material has certain proportion, when the pull rod by the screw from the central decomposition, granular rod main ironing plate below the relatively thin and dense, away from the decomposition of the screed on both sides, the main screed rod pellets below the relatively dense, granular away from the ironing plate on both sides of the relatively thick and loose. In the highway construction, the highway generally adopts two-way f