半刚性基层沥青路面基-面层层间剪应力对面层畸变能的影响

Influence of Interlaminar Shear Stress among Layers of Asphalt Pavement with Semi-rigid Base on Its Distortion Energy

为了研究半刚性基层沥青路面基-面层层间剪应力对面层内部畸变能的影响,应用BISAR软件分析了半刚性基层沥青路面半刚性基层的模量、厚度和沥青路面的厚度等参数对基-面层层间剪应力的影响,根据畸变能的计算公式得到其对面层畸变能的影响.研究结果表明:降低半刚性基层的模量,增加面层厚度,可以有效减小基-面层层间剪应力,从而降低面层畸变能,提高半刚性基层沥青路面的使用寿命.分析结果为以最大畸变能理论进行半刚性基层沥青路面的设计施工提供依据.

In order to study the influence of interlaminar shear stress among layers of asphalt pavement with semirigid base on its distortion energy,BISAR software is used to analyze the influence of modulus and the thickness of semi-rigid base and the thickness of the asphalt pavement. The results show that the lower modules of semi-rigid base and the increasing thickness of surface layer can effectively reduce the base-surface shear stress among layers,and furtherly can reduce the surface distortion so as to improve the service life of the asphalt pavement with semi-rigid base. Analysis results provides reference for the design and construction of asphalt pavement with Semi-rigid base.