CAJ | 학술논문

采用单轴贯入试验和无侧限抗压强度试验分析了加载速率、油石比、温度、级配类型及沥青种类对浇注式沥青混合料的抗剪强度的影响。通过有限元数值计算获得钢桥面铺装结构中浇注式沥青混合料的抗剪强度参数，绘制出不同荷载作用下的混合料抗剪强度标准曲线，并结合试验对混合料抗剪强度指标进行了验证。研究表明，由于自身材料组成特点，浇注式沥青混合料抗剪强度参数在不同因素影响下呈现一定的特殊变化规律，虽然浇注式沥青混合料满足荷载条件下的抗剪强度要求，但黏聚力不足会引起混合料剪切流动变形。在浇注式沥青铺装设计中，分析因为考虑抗剪强度不足引起混合料剪切流动变形时需同时考虑混合料黏聚力和摩擦角。
채용단축관입시험화무측한항압강도시험분석료가재속솔、유석비、온도、급배류형급력청충류대요주식력청혼합료적항전강도적영향。통과유한원수치계산획득강교면포장결구중요주식력청혼합료적항전강도삼수，회제출불동하재작용하적혼합료항전강도표준곡선，병결합시험대혼합료항전강도지표진행료험증。연구표명，유우자신재료조성특점，요주식력청혼합료항전강도삼수재불동인소영향하정현일정적특수변화규률，수연요주식력청혼합료만족하재조건하적항전강도요구，단점취력불족회인기혼합료전절류동변형。재요주식력청포장설계중，분석인위고필항전강도불족인기혼합료전절류동변형시수동시고필혼합료점취력화마찰각。
Based on uniaxial penetration tests and unconfined compressive strength tests,the effect of loading rate,asphalt-aggregate ratio, temperature,gradation types,and asphalt types on the shear strength of gussasphalt was analyzed.Through finite element numerical calculation for a structure of steel bridge deck paving,the shear strength parameters of gussasphalt were obtained and standard curves of the shear strength under different loads were drawn,and shear strength indexes were verified with experi-ments.The results show that,because of its material composition characteristics,the shear strength pa-rameters of gussasphalt present a certain special variation law under the influence of different factors.Al-though gussasphalt meets the shear strength requirements under load conditions,lack of cohesive force will cause shear flow deformation of the mixture.When the shear flow deformation of the mixture caused by insufficient shear strength was analyzed in gussasphalt paving design,parameters such as cohesive force and friction angle should also be considered.