钢桥类外文翻译--大跨度钢桥桥面上环氧沥青混凝土铺装.doc

Epoxy asphalt concrete paving on the deck of long-span steel bridges Under the influence of traffic load, wind load, temperature change and other factors, stress and deformation of paving system is very complicated when paving the long-span orthotropic steel bridge deck. So the weight of the paving structure should be very light and the paving material should have the properties such as high bonding power, impermeability, and so on. At present, paving projects are primarily classified into four types: Gussasphalt project, mostly used in Germany and Japan; mastic asphalt project, typically in England; stone mastic asphalt (SMA), a kind of modified asphalt lately used in Germany and Japan; and epoxy asphalt, mostly adopted in USA. Epoxy asphalt concrete is a kind of high strength and flexible material by adding thermosetting epoxide resin and solidified agent into asphalt. As a paving material, epoxy asphalt is mainly applied for steel bridge deck in USA, Canada and Australia, especially in USA. But this material has never been used for paving bridge deck in China until its application in the SNYRB. These years, the construction of long-span bridges in China has developed very fast. Many paving techniques of Japan and England have been adopted in constructing bridges. However, these techniques are not completely applicable for the particular climate and traffic conditions in China. Furthermore, the steel girder box structure, once universally used by foreign countries, has been applied in long-span bridges recently constructed in China, and the highest temperature of the paving of bridge deck in most areas of China can reach 70℃. So the paving material must possess the higher temperature stability. The paving layer of many bridges was damaged shortly after being put into use. In fact, the paving technique of steel bridge deck depends to a large extent on the structure of steel bridge deck and natural environment. Deep and systematic research on paving of steel bridge