CAJ | 학술논문

为了给沥青路面坑槽结构修补设计提供科学的理论支持，针对坑槽补缝处力学响应的影响因素修补厚度和修补料与原路面材料的模量比，采用Goodman零厚度单元模型，运用非线性有限元软件ABAQUS计算了不同修补厚度、不同模量比与荷载耦合作用下补缝处的力学响应，分析了补缝处力学指标随接触摩擦系数的变化规律．研究结果表明：不同接触模型对补缝最大拉应力和最大剪应力计算结果影响较大；不同修补厚度和模量比条件下，横缝最大拉应力无显著变化；而纵缝处，一定修补厚度和模量比条件下最大拉应力出现峰值，且由顶部到底部呈先减小后增大趋势，各补缝处最大剪应力关系是纵缝顶部＞补块表面＞橫缝底部，模量比为0．5时出现峰值0．32 M Pa ．
위료급력청로면갱조결구수보설계제공과학적이론지지，침대갱조보봉처역학향응적영향인소수보후도화수보료여원로면재료적모량비，채용Goodman령후도단원모형，운용비선성유한원연건ABAQUS계산료불동수보후도、불동모량비여하재우합작용하보봉처적역학향응，분석료보봉처역학지표수접촉마찰계수적변화규률．연구결과표명：불동접촉모형대보봉최대랍응력화최대전응력계산결과영향교대；불동수보후도화모량비조건하，횡봉최대랍응력무현저변화；이종봉처，일정수보후도화모량비조건하최대랍응력출현봉치，차유정부도저부정선감소후증대추세，각보봉처최대전응력관계시종봉정부＞보괴표면＞횡봉저부，모량비위0．5시출현봉치0．32 M Pa ．
This paper aims at providing more scientifically theoretical support for repairing design of as‐phalt pavement potholes .Repairing depth and the modulus ratio between repair material and the origi‐nal pavement material are two important factors affecting mechanical response in pothole joints .In or‐der to unveil the relationship between the mechanical properties and contact friction coefficients at the joints ,Goodman element model of zero thickness in nonlinear finite element software ABAQUS is in‐troduced to simulate mechanical response under different repairing thickness ,different modulus ratio and load combination .It is found that contact model has a great impact on the calculation results of the maximum tensile stresses and the maximum shear stresses at joints .The maximum tensile stress of transverse joints does not change greatly under different repairing thickness and modulus ratio con‐ditions in each contact model .But for longitudinal joints ,tensile stress exhibits a peak value .It first decreases and then increases from top to bottom of the joint .Shear stress show s a peak value at the top of longitudinal joints and the lowest value at the bottom of transverse joints .It reaches its highest value ,0 .32M Pa ,w hen the modulus ratio is 0 .5 .The mechanical analysis results can guide the selec‐tion of repairing material and the design of pothole fill .