Study on Comprehensive Risk Assessment of Expressway Construction Machinery Maintenance Mode
The risk assessment of conventional construction machinery maintenance and repair models often adopts grey theory,which is easily affected by the quantitative relationship between various risk indicators,resul-ting in low accuracy of the assessment.Therefore,a comprehensive risk assessment method for the maintenance and repair mode of highway construction machinery is proposed.Taking the safety status of machinery as the overall evaluation object,an evaluation index system is constructed from the four dimensions of construction.The internal relationship between the indicators is analyzed by calculating the entropy weight redundancy of the indi-cators,and the comprehensive weight of each level of indicators is calculated using the sorting and weighting method.Combined with the risk chain of mechanical maintenance and repair,the comprehensive risk evaluation value is obtained,thus achieving a comprehensive evaluation of the risk of construction machinery maintenance and repair mode.Empirical research was conducted on actual highway construction projects to verify the perform-ance of the proposed method.The results showed that the designed method has high evaluation accuracy.
万方数据
维普
