Background: Green BIM emphasizing the contribution of BIM technology to the design and construction of green buildings. It attaching importance to the impact of climate and regional environment, using benchmarking and target setting, using BIM architecture for building performance analysis and realizing performance optimization through scheme comparison and modification. A university campus is a community that has a certain geographical scope and spatial scale and involves a variety of functions, such as teaching, scientific research, and living space. Hence, a campus possesses urban characteristics and diverse building types, and the construction of green university campuses will play a leading role in green urban construction in China under the increasing ecological and energy pressure of cities.
Methods: Based on the Green BIM decision cycle model, the study employs BIM architecture to analyses building performance. By using the as the evaluation benchmark values and project objectives and taking the most representative teaching buildings, libraries, and dormitory buildings in universities in northern China as examples, the study selects appropriate BIM software, establishes models in steps, and conducts targeted visual analysis. The purpose is to find out the commonness and difference through the analysis, and then realize that the diversity of building types in campus determines that the green performance research of different types of buildings should comprehensively consider various design factors.
Results and conclusions: Taking a university library in northern China as an example, the study optimized it from four aspects: base environment, function layout, envelope performance and system transformation, and management measures improvement. The results show that the total annual cumulative energy consumption load of the scheme is reduced obviously. The conclusions are that the improvement of university buildings' green performance must be comprehensively carried out from the aspects of planning, building design, system design, energy management, and energy conservation planning. In the future, we also need to carry out energy consumption data mining, continue the energy-saving transformation of existing buildings and energy consumption systems, achieve the goal of green and low-carbon campus.