Yan Zhang’s scientific contributions

As the key node of highway traffic in China, the super-large bridge is the most important infrastructure of the country. With the completion of large-scale infrastructure construction in China, the key work of super-large bridges has changed from construction to maintenance. The service life of the super-large bridge is long, and with the increase of the service life of the super-large bridge, the annual maintenance cost is also increasing. At present, with the rapid development of super-large bridges in China, the diseases of super-large bridges are also increasing, and the maintenance and management of super-large bridges have become an urgent problem to be solved. In order to solve this problem, this paper takes the highway bridge as the research object and, on the basis of mastering the actual needs of the maintenance management of highway bridges in China, puts forward the monitoring and maintenance of bridges based on BIM technology, solves the lack of maintenance information elements in traditional BIM technology, studies the establishment method of the maintenance information model, finally develops the basic data acquisition software of the BIM model, accurately locates the disease position of the highway bridge, realizes the three-dimensional visual information management system of bridge, and continuously improves the maintenance efficiency. The research results show that starting from the monitoring and maintenance information management of highway bridges, the BIM data management method of the highway bridge maintenance stage is put forward, which realizes the visual management of maintenance information of highway bridges. Based on the analysis of the hierarchical information model of bridges, the component coding system of a bridge facing the maintenance management stage is established, and the visual management of diseases of bridges is put forward. Using BIM technology to assist the evaluation method of super-large bridges, using relational database and VBA project manager, based on the theoretical algorithm and interface design, automatic maintenance decision-making suggestions are realized. BIM technology is proposed to assist maintenance inspection and evaluation decision-making, and automatic and visual maintenance management of super-large bridges is realized. The research results provide practical guiding significance for further realizing the maintenance management system of highway bridges based on BIM technology.