| With the development of urbanization,high-rise buildings and super high-rise buildings are also developing.As a new semi mechanized scaffold,the attached scaffold provides the operation platform and transportation channel for the construction work of the high-rise buildings,which greatly facilitates the construction of the high-rise buildings and improves the efficiency of the construction work.With the increasing use of attached scaffolds,accidents also happen frequently,resulting in serious consequences of casualties and economic losses.In order to ensure the safe construction of the attached scaffold,the safety evaluation of the attached scaffold should be carried out scientifically and meticulous,and the safety management and monitoring of the key items are carried out to avoid dangerous sources,avoid the occurrence of safety accidents and improve the safety of the attached scaffold.Therefore,this paper focuses on the safety evaluation of attached scaffold.First,through the statistics of the typical cases of the attached scaffold safety accidents,the causes of the accident cases are analyzed.Secondly,the main causes of the falling and collapsing accidents of the attached scaffolding are analyzed by using the accident tree.On the basis of the calculation results,the safety evaluation index is built on the basis of the index selection principle.Then,based on the rough set theory,the safety evaluation model of the attached scaffold is built.Through the field investigation,statistics on the safety evaluation index data of the attached scaffolding,the discretization of statistical data and the reduction of the index discrete data,the weight of the reduction index is calculated,the evaluation value of the evaluation object is obtained,and the safety status of the attached scaffold is judged according to the evaluation value.Finally,the construction item of the attached scaffolding by using the attached scaffolding in Ji’nan is built.The safety evaluation model based on the rough set theory is carried out and the safety evaluation value is calculated.According to the objective and impartial evaluation of the results,the suggestions for improving the safety management of the attached scaffolding are put forward to guide the safety management in the field construction.In this paper,based on the rough set theory,the safety evaluation model of the sattached scaffold is built,which provides a certain theoretical significance for the safety evaluation and management of the attached scaffold in the construction.In this paper,through screening and establishing safety evaluation index,it quantifies the safety status of attached scaffolding,provides key direction for safety monitoring and management of construction site,ensures safe construction environment,and specific practical significance. |
