Research On Domain Knowledge Structure And Knowledge Field Of Bridge Construction Safety Risk Management

With the rapid development of economy,China’s highway construction is also developing rapidly,especially during the "12th Five Year Plan" and "13th five year plan",China continues to strengthen the investment in highway construction,hoping to ensure the convenience of transportation while accelerating the development of urbanization.Bridge construction is in the throat of highway construction,so bridge construction also ushered in its golden development period.In bridge construction,the environment of bridge construction is bad,the construction technology content is high,the construction technology is complex,the construction difficulty is big these characteristics make the safety risk management of bridge construction more important,and full of challenges.In our country,the research of bridge construction safety risk management mainly focuses on the reform of enterprise safety management mechanism or the comprehensive and systematic analysis of the whole safety production management system.Bridge construction safety risk management is a knowledge intensive work,each link produces a lot of knowledge and uses a lot of knowledge,but the current construction safety risk management is lack of the management of knowledge accumulation,storage and reuse,which makes managers lack the support of knowledge when making decisions in the face of risk problems,and then affects the efficiency and accuracy of decision-making Accuracy.In order to solve this problem,this paper combs the knowledge elements in the field of bridge construction safety risk management and the relationship between them,and also establishes the knowledge field in the field of bridge construction safety risk management.Firstly,the rules of knowledge elements in the field of bridge construction safety risk management are extracted manually by using LTP to segment words,part of speech analysis,dependency syntax analysis,etc.,then all the knowledge elements in the field of bridge construction safety risk management are extracted by using the rules,and then the relationship between the knowledge elements is analyzed by corpus tagging and machine learning,The knowledge element structure in the field of bridge construction safety risk management is constructed based on the above-mentioned hyponymy,homonymy or causality.Combined with the case to verify the domain knowledge meta structure,to determine its authenticity and accuracy.After that,through the analysis and processing of the literature,the text extracts what are the knowledge situation elements related to the construction field,and then combined with the characteristics of bridge construction safety risk management,it is divided into three fields: field management field,field business field and field storage field.After dividing the situational elements into these three fields,comparing the situational elements with the field of construction safety risk management,this paper analyzes the composition of the situational elements of these three fields respectively,and finally establishes the knowledge field in the field of construction safety risk management.Through the construction of knowledge element and knowledge field,managers can directly call the knowledge reserve of relevant situations when facing specific risk situations,so as to support managers to make decisions,so as to improve the accuracy and timeliness of decisions.