Research On Ontology-based BIM And VR Technology To Assist Green Construction

With the rapid development of society,energy and environmental problems become an urgent problem to be solved.The construction industry is an industry with large energy consumption both in construction and use stage,and has a great impact on the environment,so it is necessary to speed up the green process.Construction is also a very important stage in the life cycle of a building.Some countries have formulated and issued laws and regulations related to green construction according to their own actual conditions to promote the standardization of green construction.At present,China has formulated regulations related to green construction,but on the one hand,the construction industry absorbs a large number of labor force,the quality of construction workers is generally not high,the traditional mode of training for workers is not only inefficient,but also the effect of workers receiving information is poor,so a more efficient way to train personnel is urgently needed.On the other hand,the efficiency of artificial judgment on whether the construction behavior conforms to the green construction specification is low,so more intelligent methods are needed to judge the construction behavior.VR(Virtual Reality)technology can build virtual scenes,provide an immersive experience and enable users to interact with virtual reality scenes.Ontologies can be used for knowledge representation and rule reasoning.This research combines BIM(Building Information Modelling),VR,and ontology technologies for green construction training.This research used BIM to build a green construction scene.Based on the context learning theory,a VR green construction training system was established.Real-time data in the VR operation process was collected and stored through the MySQL database.The green construction ontology was established through the Protégé software.SWRL was used to define the rules.The Jess inference engine was used to infer VR operation data,so as to judge whether the workers' green construction learning behavior conforms to the green construction specification.The effectiveness of the proposed method is verified by a case study,that is,based on the BIM model of a green construction site,the immersive scene is made by the Unity game engine,and the workers learn the knowledge points of green construction and interact with the construction scene.As an example,the three-dimensional coordinate information of each frame is collected and stored in the database,and the feasibility of the proposed method is proved by reasoning whether the distance between the blast site and worker conforms to the distance regulations in the provisions of demolition engineering of green construction through ontology reasoning.This study provides an intelligent solution for green construction training,which is of great significance to promote the development of green construction.