防水层施工是城市轨道交通高架桥梁的最后一道施工工序，其设计、施工质量关系到高架桥梁的耐久性和使用安全。津滨轻轨工程在高架无碴桥梁整体道床的砂浆垫层、防水涂料和保护层的设计、施工中进行了深入地探讨。

The construction of the waterproofing layers is the last step of the construction of the elevated bridges of MRT system. The design and construction quality of the waterproofing layers are closely related with the durability and operation safety of the elevated bridges. The article describes the design and construction of the base layers, waterproofing paints and protection layers of the monolithic roadbeds of the elevated bridges of Jinbin light rail project.