Research On Safety Risk Evaluation And Control Of Prefabricated Building Construction Based On SEM-FCEM

In recent years,the construction industry,as a pillar industry in the development of the national economy,has developed rapidly with the further development of the social economy and the advancement of the urbanisation process.In line with the development of the times,assembled buildings have obvious advantages over traditional cast-in-place buildings in terms of short construction cycle,high production efficiency,energy saving and environmental protection,and are an efficient building product that has become a key point of modernisation and innovation in China’s construction industry.With the development of assembled buildings elevated to the national level,the assembled building industry is developing rapidly in China.However,the continued application and popularity of assembled buildings has also resulted in an increasing number of construction accidents.The development process is still at a stage of continuous exploration and development,and its technical standard and site management level are not mature enough.Moreover,the parallel operation of assembled buildings in the production and transportation process of prefabricated components and the construction and assembly stages is prone to a risk superposition effect,so there are many risk factors affecting the construction of the project during the construction process.To promote the development of assembled buildings,it is necessary to effectively identify,evaluate and control safety risks during the construction process.In this paper,through the study of relevant literature and risk management theory,a conceptual analysis of safety risks in the construction phase of assembled buildings is conducted,Management risk factors and environmental risk factors.The risk factors were screened using questionnaires and principal component analysis,and a risk evaluation index system was constructed for the construction safety of assembly buildings.Subsequently,the questionnaire method was used to collect data,and SPSS and AMOS software were used to check the validity and reliability of the questionnaire data.Based on the adjustment and evaluation of the original model,the final structural equation model was determined,the path coefficients of the model were standardized,the risk evaluation indicators were assigned weights,and a fuzzy comprehensive evaluation model was established based on this,so that the SEM-FCEM risk evaluation model was constructed to evaluate the safety risks of assembly building construction.The model fully takes into account the interrelationship between the influencing factors and the existence of fuzziness among the indicators,and combines subjective judgement with objective reality to make the evaluation results more scientific and reasonable.Finally,the risk evaluation model is applied to an example of an assembly building project to evaluate the construction risks of the project,and the results of the evaluation are used to propose risk prevention measures in five aspects: management,personnel,materials and machinery,environment and construction technology.Figure[6] Table[41] Reference[68]...