Risk Assessment And Analysis Of Building Construction Safety

With the continuous progress of safety management,safety management of building construction has become a dynamic management process.The main performance is that there is a certain sequence and correlation between the factors causing accidents,and the probability of accidents will change with the passage of time.In the construction industry,with the passage of the construction period,people,machines,objects,laws and environments will have certain dynamic changes.There are also different dangerous and harmful factors in different construction projects or in different construction stages of one project.With the rapid development of China’s economic strength and science and technology culture,the development speed of construction industry has increased rapidly in recent years.However,a large number of hidden dangers in production safety have also come along,which seriously restricts the sustainable,efficient and healthy development of China’s construction industry.The situation attracts attention gradually of the relevant departments and all sectors of society.The main reason is that the safety management methods adopted in China’s construction industry are still traditional and static,lack of effective dynamic management means.In order to ensure the safety and stability of the construction project during the whole construction period,the first thing is to identify the types of hidden dangers in every aspect of the construction process,and forecast the possible accidents,then make safety evaluation of the forecast results,take safety management measures and update the corresponding safety technology.For example,at present,safety evaluation methods with higher frequency in China can be classified into three categories,in the case of static fault tree,it is difficult to solve the time series and correlation between hazardous and hazardous factors involved in dynamic management or the dynamic changes caused by the probability of accidents.Therefore,it is impossible to analyze the actual possibility of possible accidents in the construction process effectively.The dynamic fault tree,which includes priority-and and sequence-enforcing,can extend the application of the traditional fault tree analysis method to the dynamic system.Thus,the reliability modeling of systems with sequential correlation,resource sharing,repairable,cold and hot spare is achieved.Based on the analysis of falling accident,the accident type with the highest probability in construction site,the dynamic accident tree analysis method is used to model.Using BDD and Markov chain analysis to calculate the probability of each part of the system,and compare the results with those of the static accident tree,it can be found that compared with the traditional static risk assessment method,the dynamic analysis is more close to the reality,so it can be concluded that the implementation of dynamic security management measures more targeted and timely.