Research On The Coupling Relationship And Measurement Of Safety Risk Factors Of Tower Cranes In Building Construction

The important reason for the safety accidents of tower cranes in building construction is the coupling effect of safety risk factors.At present,there is still a lack of research on the coupling effect relationship,the degree of coupling,and how to prevent and control the coupling between these safety risk factors.Therefore,the research on the coupling relationship and measurement of safety risk factors of tower cranes in building construction is of great significance to the safety management of tower cranes in construction sites.By sorting out the relevant literature on the safety management and risk coupling research of building construction tower cranes at home and abroad,this thesis clarifies the existing research priorities and deficiencies,and determines the research object and research scope.By using case study and literature research method,and combining with expert investigation results,20 safety risk factors for tower cranes in building construction are determined from four dimensions: personnel risk,equipment risk,environmental risk and management risk.On this basis,the coupling relationship of safety risk factors of tower crane in building construction is analyzed by using interpretive structure model from the perspective of qualitative analysis;And the coupling degree calculation model of risk factors is constructed,the coupling index system of this model is established based on the list of risk factors,the weight of coupling index is determined by the combination weighting method of AHP-entropy weight method,the digital characteristics of risk value of coupling index are calculated by reverse cloud model,and the coupling degree between coupling indexes is calculated by efficacy function and coupling degree function.Finally,the case of tower crane accident in project B is selected to apply the coupling degree model.According to the calculation results of coupling degree and combined with the elastic risk decoupling theory,the coupling prevention and control measures for the safety risk factors of tower cranes in building construction are put forward.Including 19 figures,44 tables,110 references...