为了开发一种排水路面所用高黏改性沥青，利用苯乙烯-丁二烯-苯乙烯嵌段共聚物（SBS）、丁苯橡胶（SBR）、胶粉、硫黄粉复配制备一种高黏复合改性沥青（HVMA-4），将常见的3种高黏改性沥青作为对照组进行对比。通过零剪切黏度试验、动态流变试验以及弯曲流变试验分别评价HVMA-4复合改性沥青以及对照组的黏度性能、高温性能和低温性能，并用红外光谱和扫描电镜对复合改性沥青的结构和微观形貌进行分析。结果表明：HVMA-4的高温流变性能最好，在68 ℃时，HVMA-4较HVMA-1、HVMA-2、HVMA-3分别提升93.9%、82.1%和68.8%。HVMA-4抗车辙能力表现更为突出，低温抗裂性能以及抗永久变形能力更强。微观结果表明，3种改性剂在沥青中分布均匀并形成三维网状结构，HVAM-4的形成既有物理变化也有化学变化，沥青分子间的稳定性得到提高。

In order to develop a high viscosity modified asphalt for drainage pavement, styrene-butadiene-styrene block copolymer (SBS), styrene-butadiene rubber (SBR), rubber powder and sulfur powder were combined to prepare a high viscosity modified asphalt (HVMA-4), and three common high viscosity modified asphalt were compared as control group. Zero shear viscosity test, dynamic rheological test and bending rheological test were used to evaluate the viscosity, high temperature and low temperature properties of the HVMA-4 composite modified asphalt and the control group, respectively. The structure and microstructure of the composite modified asphalt were analyzed by infrared spectroscopy and scanning electron microscopy. The results showed that HVMA-4 had the best high-temperature rheological properties, with 93.9%, 82.1% and 68.8% improvement at 68 ℃ over HVMA-1, HVMA-2, and HVMA-3, respectively. HVMA-4 showed more outstanding rutting resistance, low temperature cracking resistance and permanent deformation resistance. The microscopic results showed that the three modifiers were uniformly distributed in asphalt and form a three-dimensional network structure. The formation of HVAM-4 had both physical and chemical changes, and the intermolecular stability of asphalt was improved.