CAJ | 학술논문

为了探讨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应力状况,利用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以及基层缩缝宽度对沥青路面温度应力的影响.结果表明:沥青面层厚度对路面温度应力有显著影响,但沥青面层模量对路面温度应力影响不明显;贫混凝土基层厚度和模量对温度应力影响不显著;基层缩缝宽度对路面温度应力有显著影响.适当增加沥青面层厚度对延缓反射裂缝十分有效,适当增加沥青面层模量对延缓反射裂缝只起到较小的作用;改变贫混凝土基层的厚度、模量对延缓反射裂缝作用不明显;适当宽度的基层缩缝对延缓反射裂缝效果显著.
위료탐토빈혼응토기층력청로면재불동로면결구화재료삼수하적온도응력상황,이용삼유유한원수치방법,분석료력청면층후도화모량、빈혼응토기층후도화모량이급기층축봉관도대력청로면온도응력적영향.결과표명:력청면층후도대로면온도응력유현저영향,단력청면층모량대로면온도응력영향불명현;빈혼응토기층후도화모량대온도응력영향불현저;기층축봉관도대로면온도응력유현저영향.괄당증가력청면층후도대연완반사렬봉십분유효,괄당증가력청면층모량대연완반사렬봉지기도교소적작용;개변빈혼응토기층적후도、모량대연완반사렬봉작용불명현;괄당관도적기층축봉대연완반사렬봉효과현저.
In order to analyze thermal stress of asphalt pavement on lean concrete base with different road structures and material parameters,a 3D finite element method was used to analyze the effects of the thickness and modulus of asphalt surface course,the thickness and modulus of lean concrete base and the width of base contraction joint on the thermal stress of asphalt pavement.The results show that (1) the thickness of asphalt surface course and the width of base contraction joint have great effect on thermal stress,but the thickness and modulus of lean concrete base and the modulus of asphalt surface course have little effect on thermal stress;(2) it is effective to avoid reflection crack by increasing thickness of asphalt surface course properly,but it is little effective by changing the modulus of it;(3) the modulus and thickness of lean concrete base have little effect on the reflection crack avoidance;(4) the proper width of base contraction joint has great effect on the reflection crack avoidance.