Research On Risk Knowledge Management Method Of Construction Project Oriented To Virtual Community

With the rapid development of China’s economy and technology,the scale of construction projects has become more and more large,the cycle becomes longer and longer,the technical difficulty is getting higher and higher,the construction project is prone to risk cases,that He has an impact on society,economy,and the natural environment.Researchers have been trying to find ways to prevent and reduce the risk of construction projects.However,due to lack of experience and knowledge,construction project risk management has not been effectively implemented.Virtual community and ontology have an important role in the acquisition and sharing of knowledge.The aim of this paper is to introduce the virtual community and ontology technology into the construction project risk management,and construct the risk knowledge base of the construction project for the virtual community.It aims to improve the risk knowledge level of the project personnel and prevent and reduce the risk of the construction project happened.First of all,on the basis of detailed literature review,this paper analyzes the current situation and research direction of risk knowledge management,virtual community and ontology of construction projects at home and abroad,and points out the shortcomings of the current research.And then put forward the virtual community and ontology technology in the risk management of construction project,utilize the openness of the virtual community,obtain the risk knowledge of the construction project and review the risk knowledge.Then,on the basis of ontological theory,we choose the ontology editing tool Protégé software and the "seven step" to construct the construction project risk ontology.From the knowledge representation,the definition of the core concept,the relationship between the class and the definition of the class,the creation of examples to complete the construction project risk ontology knowledge base construction,and based on collaborative development to complete the risk of ontology update.Finally,to analyze application of the ontology knowledge base of the construction project for the virtual community,and the function of the ontology knowledge base is briefly introduced and applied from the aspects of reasoning and semantic retrieval.And to develop the prototype system to verify the actual project case,to achieve the construction project risk knowledge sharing and reuse,and promote the construction project personnel risk management level,which is to prevent and reduce the risk of construction projects is of great significance.