通过对高速公路中央分隔带的设置型式、功能、内部积水的原因及其对路面结构、路基造成损害和对行车的影响程度进行简述 ,指出高速公路进行中央分隔带排水设计的必要性 ;结合中央分隔带排水设计原则 ,提出关于设计要点的构思、设计方案的布置及其排水构造的设计要求 ;并对各种设计方案进行综合评价 ,供同类工程设计参考。 Through the brief introduction of the types and functions of the central divider belt of the expressway, the reason of the internal water accumulation, the damage caused to the pavement structure and the roadbed and the impact on the traffic, the necessity of expressway drainage design for the central divider zone is pointed out. Combined with the design principle of the central divider drainage, the author puts forward the conception, design layout and design requirements of the drainage structure.