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基于有限元软件ABAQUS编制DLOAD(竖向移动荷载)子程序,计算移动荷载作用下不同坑槽面积大小和不同路面结构组合下沥青路面的力学响应,从而得出坑槽的发展规律和最佳的抗坑槽路面结构。结果表明:坑槽变化曲线中急剧增长的拐点为坑槽面积为53.25cm×53.25cm,即荷载作用面的横向宽度的乘积;路面结构组合型式4.5cm+6cm+9.5cm为最优的抗坑槽面层结构组合型式,其结果可为确定最佳的坑槽维修时机提供指导,并为抗坑槽路面结构型式提供最优设计方案。
Based on the finite element software ABAQUS, the subroutine DLOAD (Vertical Moving Load) was used to calculate the mechanical response of asphalt pavement with different pit area under different moving loads and the combination of different pavement structures. The development law of pit and the best Anti-pit groove pavement structure. The results show that the inflection point of the sharp increase in the pit curve is the product of the pit width of 53.25cm × 53.25cm, which is the product of the lateral width of the loading surface. The pavement structure type 4.5cm + 6cm + 9.5cm is the best anti-pit The results show that the method can provide guidance for determining the optimal trenching maintenance timing and provide the optimal design for the anti-pit road structure type.