基于结构方程模型的公轨合建桥施工安全风险评估OA

Based on the construction of the first Phase of the line 10 project of Xi'an highway and rail traffic building jointly,which crosses the Jingwei River section and dual-use bridge project of the Xiyan Expressway,the WBS-RBS method was used to identify construction risk sources;The coupling degree model was used to calculate the single and double risk coupling degrees of risk factors;Through literature research,the risks of public rail joint construction projects were divided into 7 categories of personnel quality,machinery and material status,and operating environ-ment etc.and total 24 subcategories.The construction risk model was verified by the structural equation model.The coupling analysis results indicate that personnel risk factor and mechanical equipment material risk factor are most likely to couple with other risk factors.The results of the structural equation model indicate that the construction risk factors are ranked in descending order of correlation coefficients is safety execution force＞management system＞safety control force＞working environment＞bridge structure＞machinery and material status＞personnel quality.The results indicate that personnel safety management should be strengthened and the design of construction protec-tive systems be focused on in highway and rail traffic building jointly project.The bridge structure will also have a significant reducing effect on safety risks.