ABSTRACT
Urban interchange is a systematic project, and the alignment and structural design of the interchange projects are the core issues, which determine the advantages and disadvantages of the design scheme. Based on the design of an interchange project in Nanning, this paper discusses a variety of technical problems in the overall scheme design of interchange under complex environment, puts forward the optimization methods of road alignment and bridge structure design of interchange, and improves the optimization methods in combination with building materials, construction technology, and landscape environment. Then, considering various factors, such as technology and economy, the design schemes of urban interchange are compared and recommended, which provide a reasonable and effective reference for the optimization design of urban interchange.
