Abstract:Under the background of further promoting the new urbanization, the central cities and urban agglomerations are becoming the main spatial forms of bearing development elements, and it is more urgent to solve the problem of urban traffic congestion. Urban viaduct has the advantages of easy to form the network layout and closely integrate with the existing urban roads, but has some characteristics different from highway bridges. By comparing the design codes for urban viaducts between China and Japan, some methods adopted by Japan in the construction of urban viaduct are found out. Some ideas such as the determination of the maximum longitudinal slope of the bridge according to the design speed, the distribution of lane load on the surface, the adoption of the different anti-overturning safety factors according to the type of action, and the strengthening of drainage in pavement layer to improve durability are put forward.
