In order to study the compaction mechanism of ultra-thin anti-slip sliding sealing layer and gravel distribution,the contour scanning and 3D reconstruction of real gravel particles were carried out by CT scanning and 3D reconstruction technology.On this basis,EDEM discrete element software was used to establish the model of convex polyhedron particle and compaction,and the changes of parti-cle topology,contact force and coordination number during compaction were analyzed by particle contact dynamics.Results show that the airvoid of three-dimensional reconstruction models is consistent with the actual situation.The topology evolution is connected with the col-or and thickness of contact vectors during compaction.Moreover,the average contact force and coordination number of particles keep in-creasing and stabilizing with loading.Therefore,gravel particles can form solid embedded structure and ensure the anti-sliding performance and spalling resistance of pavement.
关键词
沥青路面/超薄抗滑封层混凝土/压实仿真/DEM/3D重构
Key words
asphalt pavement/ultra-thin anti-slip sealing layer/simulation of compaction/DEM/3D reconstruction
万方数据