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以武汉长江隧道工程为对象,分析了路面结构组成、材料刚度、层间接触条件、坡度大小和荷载速率对隧道大纵坡沥青复合路面结构受力特性的影响规律,结果表明:隧道大纵坡刚性基层沥青路面弯沉值小于一般公路隧道,但在湿滑的隧道环境和过往车辆频繁刹车作用下,路表水平应力激增,行车安全性下降;采用刚性基层沥青复合路面结构和新型隧道路面材料——抗滑、阻燃、降噪沥青(AFNA),不仅满足了隧道路面抗滑、阻燃、降噪功能要求,而且提高了隧道路面结构的抗剪强度和整体承载力.
Taking Wuhan Yangtze River Tunnel Project as an example, the influence of pavement structure, material stiffness, interlayer contact conditions, slope size and load rate on the stress characteristics of large longitudinal asphalt concrete pavement is analyzed. The results show that: The deflection of rigid asphalt pavement is less than that of normal highway tunnels. However, under wet tunnel conditions and frequent braking of passing vehicles, the level stress of road surface increases sharply and traffic safety is deteriorated. The rigid base asphalt composite pavement structure and new tunnel pavement materials - Anti-skid, flame-retardant and noise-reducing asphalt (AFNA) not only meet the anti-slip, flame retardant and noise-reducing functions of tunnel pavement, but also improve the shear strength and overall bearing capacity of tunnel pavement structure.