为改善连续配筋混凝土与沥青面层间的黏结效果,提高复合式路面层间抗剪强度,以同步碎石封层层间抗剪强度为研究对象,采用“水泥混凝土+封层+沥青面层”的复合结构,以集料粒径、沥青洒布量、试验温度、混凝土基面构造深度、竖向压应力为变量,进行室内连续配筋混凝土-沥青混凝土（Continuously Reinforced Concrete Pavement-Asphalt Concrete, CRCP-AC）层间同步碎石封层（Synchronous Crushed Stone Seal Coat, SCSSC）抗剪模拟试验。结合三维有限元分析结果,确定了同步碎石封层最佳参数组合,提出了改善层间抗剪强度的建议。试验结果表明:集料粒径、沥青洒布量、试验温度、混凝土基面构造深度、竖向压应力对同步碎石封层层间抗剪强度产生了显著影响;相较于4.75~9.5mm粒径的集料,为获取更高的抗剪切强度,在工程实践中宜选择9.5~13.2mm粒径的碎石作为同步碎石封层用撒布料;使用粒径为9.5~13.2mm的集料时,最佳参数组合为沥青洒布量1.6kg/m²+碎石撒布量8kg/m²。

In order to improve the adhesion between the CRCP(Continuously Reinforced Concrete Pavement) and the AC(Asphalt Concrete) layer, and further increase the interlayer′s shear strength of the composite pavement, the paper investigated the interlayer′s shear strength of the SCSSC(Synchronous Crushed Stone Seal Coat). The composite layer of "Cement Concrete + SCSSC + AC" was realized indoor to conduct and assess the interlayer shear strength of the SCSSC layer, where the following factors were set as test variables, such as the aggregate particle size, the asphalt spraying amount, the shear temperature, the texture depth of the concrete surface, and the normal stress, etc. Combined with the three-dimensional finite element analysis, the optimal parameter combination of SCSSC was determined, and suggestions for improving the interlayer′s shear strength were proposed. The test results showed that the shear strength of SCSSC was greatly affected by the aggregate particle size, asphalt spraying amount, shear temperature, the texture depth of the concrete surface, and normal stress; compared to crushed stone with size of 4.75-9.5mm, the crush stone with size of 9.5-13.2mm was more appropriate for engineering use due to its better shear resistance ability; the optimal composition of 1.6kg/m² asphalt spreading amount and 8kg/m² crushed stone spreading amount was recommended when the crush stone with size of 9.5-13.2mm was adopted.