基于云模型的装配式建筑施工安全风险评价

Research on Safety Risk Assessment of Prefabricated Building Construction

为预防装配式建筑施工安全事故的发生,根据工程实际和文献资料进行评价指标筛选,结合调查问卷信度、效度分析结果,从人、物、技术、管理、环境5个方面建立了科学合理的安全风险评价指标体系。采取序关系分析法(Order Relation Analysis Method,G1)-熵权法(Entropy Weight Method,EWM)计算主客观权重,加以博弈论组合赋权,确定评语集各等级数学特征,并将其以MATLAB绘制映射到云图上。结合具体案例分析,建立了评价标准云和项目评价云模型,计算项目评价云与各标准云的云相似度,得到项目“比较安全”的结果,据此提出了安全措施建议,对装配式建筑的安全管理有一定的借鉴意义。

In order to prevent the occurrence of safety accidents in the construction of prefabricated building,the evaluation indicators were screened according to the actual project and literature,and combined with the reliability and validity analysis results of the questionnaire,a scientific and reasonable safety risk evaluation indicator system was established from five aspects:human,material,technology,management,and environment.Order Relation Analysis Method(G1)-entropy weight method is adopted to calculate the subjective and objective weights,and game theory combination weighting is applied to determine the mathematical characteristics of each grade of the comment set,and it is mapped to the cloud map in MATLAB.Combined with the specific case analysis,the evaluation standard cloud and project evaluation cloud models are established,and the cloud similarity between the project evaluation cloud and each standard cloud is calculated to get the“relatively safe”results of the project.Based on this,safety measures and suggestions are proposed,which has certain reference significance for the safety management of prefabricated building.