摘要
大跨径钢桥桥面沥青铺装材料的性能对行车舒适性及桥梁耐久性有重要的影响,其设计与桥梁所处气候、交通荷载条件及某些特殊要求有关。在了解各类铺装材料特性和适用性的基础上合理选材是铺装设计重要步骤之一。以武汉白沙洲大桥、明石海峡大桥和南京长江二桥为例对三种主要的铺装材料(改性沥青SMA混凝土、高温拌和浇注式沥青混凝土和环氧沥青混凝土)设计进行对比说明,对铺装材料特性、优劣点及适应性结合具体桥梁进行初步探讨,以期为钢桥面沥青铺装设计提供参考。
Materials' property plays an important role not only in vehicle safety and comfortable lever but also in durability for long- span steel bridge. The design of materials is usually related with climate, traffic and some special requirements. Based on the property and suitability of pavement materials, pavement materials selected properly is one of most important steps in the design of pavement. The comparability of three pavement materials (SMA,GA and Epoxy Asphalt)in some long- span steel bridge is descussed in order to give some references to the design of asphalt pavement.
