With the recent continuous improvement of China′s economic level, the national investment on infrastructure constructionhas been increased significantly. In the bridge construction area, the service life of the bridge is constantly growing, andcorrespondingly, the problems on bridge structure disease are increasingly prominent, which claims for higher request on following facility maintenancework. This paper firstly analyses the deficiencies and limitations of present bridge-detection method, then puts forward a BIM UAVbridge detection implementation scheme, and further discusses the combination of BIM technology and UAV and its application in bridge detection. This paper will provide the reference for the future upgrade of bridge detection technology.

The development of BIM technology has promoted a new revolution in the construction industry. With the deepening concepts of green buildings, intelligent buildings and urban sustainable development, the existing modeling methods can no longer meet the latest modeling requirements. In recent years, 3D real-time modeling technology has been widely used in model reconstruction of existing buildings. Thus, how to realize high-precision, fast-rate, low-cost real-life modeling becomes an important problem faced by numerous technicians. This paper uses the tilt photography technology to realize 3D real-world modeling. Based on an actual engineering case study, an implementable reference plan is proposed, and the real-world modeling method is used to monitor the settlement of the tunnel entrance.

With the development of BIM application in domestic engineering construction industry in China, the governments and enterprises gradually realize the importance and value of BIM technology. Codes and/or guidelines for BIM applications have been published in various places. BIM technology runs through the whole life cycle of engineering construction, while the 3DGIS technology performs well in presentation application for the infrastructure construction closely related with the surrounding terrain and environment, such as bridge, tunnels and highway engineering. The combination of two technologies is imperative. This paper considering practical application experience in engineering explores the application of the BIM+3DGIS technology in bridge engineering, and provides reference for the future development of BIM+3DGIS technology.