高性能混凝土在高架桥上的应用

Application of High-performance Concrete in Viaduct

现行规范对桥梁结构的使用年限提出了明确的要求,桥梁结构的耐久性设计已成为重点,高性能混凝土是确保结构物耐久性的重要措施。该文阐述了,在贵阳市某主干道高架桥设计中,从耐久性设计为出发点,选取了主体结构混凝土等级,并对主梁及桥墩按高性能混凝土进行设计,为高性能混凝土在桥梁结构上的应用提供参考。

The service life of bridge structure is clearly required in the current standards.The durability design of bridge structure has become the key point.The high-performance concrete is the important measures to ensure the structure durability.The article sets forth the signification of durability design in the design of a main trunk viaduct of Guiyang City,the selection of concrete grade of the main structures,and the design of the main beam and the bridge piers according to the high-performance concrete,which can be referred for the application of high-performance concrete in the bridge structures.