This paper firstly elaborates the features and significance of demolition management in infrastructure construction.By analyzing the main business and functional requirements of the demolition management system, this paper puts forward the demolition management based on BIM.Its goal, content and structure has been analyzed in the paper.Finally, with the demolition management module in Yang Si Gang Bridge Demolition Management Information System.The superiority and advanced nature of the demolition management method based on BIM have been illustrated sufficiently.It provides a useful reference for the demolition management in similar construction projects.

With the continuous development of urban modernization, problems appear in current underground pipeline information management in the old town area, including complex pipeline ownership and relationship, unclear underground pipeline layout, and etc. In order to solve these problems, a BIM-based digital management system for underground pipelines is proposed, and its role in the whole process of pipeline project is analyzed. Finally, the underground pipeline digital management system is applied to the Yangsigang Yangtze River Bridge project in Wuhan to achieve the functions of information classification, information retrieval, information visualization and collision detection for underground pipelines. The system effectively improves the management efficiency, increases the project revenue, and provides useful references for BIM technology combined with underground pipeline information management.