半刚性基层开裂的沥青路面承载力响应特性OA北大核心CSTPCD

In order to study the effect of semi-rigid base cracking on the bearing capacity response characteristics of asphalt pavement,ABAQUS software is used to establish a three-dimensional model of asphalt pavement with different types of base reflection cracks,and to study the bearing capacity response characteristics of the pavement under load,and reveal the response mechanism.The results show that the greater the length of reflective cracks,the greater the response of pavement bearing capacity.Before and after the reflection crack passes through the pavement,the bearing capacity response surges from weak to strong,and the reflection crack only affects the bearing capacity response within a certain width range.The suggestions for the treatment of reflection cracks are given,that is,according to the current scheme,attention should be paid to the distinction between reflection cracks and surface cracks to limit their development.The effect of reflection crack on the bearing capacity response is analyzed from the Angle of length,width and structure level.The simulation results are in agreement with the field measured results,which provides a reference for the study of bearing capacity response of semi-rigid asphalt pavement.