| According to the relevant statistical data released by the official website of the Ministry of Housing and Urban-Rural Construction,the number of accidents and deaths caused by construction safety accidents continued to rise from 2010 to 2019.Among them,the high-altitude falling accidents accounted for an average of 51.76% of all construction safety accidents,making it the type of accident with the highest frequency and mortality.Engineering practice shows that the high-altitude falling accidents in construction caused by a single risk are uncommon and the majority of the accidents are the result of multiple risks coupling.Therefore,it is in line with the new demand and development trend for construction to discard the conservative concept of safety risk management and study the laws on risk coupling of high-altitude falling accidents in order to curb effectively the frequent occurrence of the accidents.The paper topic and contents are determined based on reading a large number of literatures.Firstly,according to the causation theories abroad and the domestic classification conventions of construction safety risk factors,the safety risk factors are classified and identified of 51 high-altitude falling accidents of Company A from 2011 to 2020,and analysis of risk coupling relationship is followed.Secondly,the N-K coupling model is set up based on51 accidents and the coupling degrees are measured.Finally,optimization suggestions of safety risk prevention of high-altitude falling accidents based on decoupling theories are put forward to Company A.Qualitative and quantitative methods are used to do an in-depth study on safety risk coupling of high-altitude falling accidents in construction in the paper.It is of both theoretical and practical significances to explore safety risk coupling mechanism and decoupling strategies of high-altitude falling accidents and provide a new perspective of safety risk management for a large number of construction companies. |
