Research On The Construction Safety Evaluation Of High-rise Building Based On SVM

The improvement of the level of urbanization benefits from the development of the construction industry.With the increase of the total number of people and the limitation of inherent resources,many factors directly affect the development of buildings,and high-rise buildings are also gradually prevailing in this context.Compared with general buildings,high-rise buildings have high construction technology requirements,complex surrounding environment,strong uncertainty and easy to produce accidents.The occurrence of construction safety accidents will affect the interests of the participants,and the more direct impact is the safety of operators.China has been aware of the harm of safety accidents,and gradually pay attention to safety laws and regulations,safety management,but the current construction site safety management level is still to be improved.Based on this situation,this paper selects the construction stage of high-rise building as the target,constructs the safety evaluation model,provides a new idea for the study of high-rise building safety evaluation.Based on the research of scholars at home and abroad,this paper analyzes typical safety accident cases,analyzes high-rise buildings,and establishes an initial index system based on the current codes and standards and combined with the actual situation of the construction site.Through the questionnaire survey,the credibility of the questionnaire was verified,and the correlation analysis of the indicators was carried out to ensure the feasibility and pertinence of the index system.The final evaluation index system was established:4 first-level factors(human,material,management,environment)and 15 second-level factors.Analytic Hierarchy Process(AHP)and Entropy Weight Method(EW)are used to determine the comprehensive weight of indicators,and the construction safety evaluation model of high-rise buildings is established.The established safety evaluation model is applied to M project,and the empirical analysis is carried out.Parameters optimization,training and prediction of the constructed model were carried out by support vector machine.The results showed that the safety of M project was in a critical state,which was consistent with the actual situation,and verified the feasibility and practical value of the model.And through the model,analyze the main factors affecting the safety accident,find out the safety hidden danger in the accident,from the aspects of human,material,environment,management,put forward preventive measures for safety control,reduce the occurrence of accidents.