【摘要】 为了分析贫混凝土基层沥青路面在不同路面结构和材料参数下的温度-荷载耦合应力状况,通过三维有限元数值方法,分析了沥青面层厚度和模量、贫混凝土基层厚度和模量及基层缩缝宽度对沥青路面温度-荷载耦合应力的影响.研究表明:沥青面层厚度和基层缩缝宽度对路面温度-荷载耦合应力有显著影响;基层厚度和模量对耦合应力的影响不显著.适当增加沥青面层厚度对预防反射裂缝十分有效;改变贫混凝土基层的厚度和模量对预防反射裂缝作用不大;适当宽度的基层缩缝对延缓反射裂缝效果显著.更多还原

【Abstract】 In order to analyze coupling stress of asphalt pavement on lean concrete base under different road structure and material parameters,a 3D finite element method was used to analyze the effects of the thickness and modulus of asphalt pavement,the thickness and modulus of lean concrete base and the width of contraction joint on the coupling stress of asphalt pavement.The results show that: the thickness of asphalt pavement and the width of contraction joint have great effect on coupling stress,but the thickness and modulus of base have little effect on coupling stress.It is effective to avoid reflection crack to increase thickness of asphalt pavement properly,but it is little effective to change the modulus and thickness of base;the width of contraction joint has great effect on the reflection crack.更多还原