基于集对理论的混凝土泵送施工堵管风险评价

近年来,高层和超高层建筑发展迅猛,混凝土高处泵送堵管时有发生,如何防止混凝土泵送施工堵管引发各方关注。为了预防混凝土泵送施工过程中堵管的发生,以事故因果连锁理论和人-机-料-法-环理论为理论依据,在对混凝土泵送施工堵管的主要影响因素进行分析的基础上,建立了混凝土泵送施工堵管风险评价指标体系;利用层次分析法确定风险指标权重;接着结合集对分析的联系度理论,运用模糊综合评价法构建了混凝土泵送施工堵管风险评价模型;最后,结合工程实例,运用模糊综合评价模型确定了某施工项目混凝土泵送堵管风险等级,并给出了相关风险防范措施和建议,为今后混凝土泵送施工的风险评价研究和堵管风险管控提供了重要参考。

The risk assessment of blockage in concrete pumping constructionbased on set pair analysis

In recent years, with the rapid development of high-rise and super-high-rise buildings, the blockage in concrete pumping construction occurs frequently. How to prevent blockage in concrete pumping construction has attracted much attention, however, there are few studies on risk assessment of blockage in concrete pumping construction. In order to prevent the occurrence of blockage in concrete pumping construction, based on the casual chain theory of accidents and the man-machine-medium-management theory, the main factors affecting the blockage in concrete pumping construction are analyzed, and then the risk assessment index system of blockage in concrete pumping construction is established. After that, the weight of each index is determined by analytic hierarchy process (AHP) with data processing under MATLAB. In addition, combined with the set pair analysis(SPA), the risk assessment model of blockage in concrete pumping construction is constructed by using the method of fuzzy comprehensive evaluation(FCE). At the end of the paper, illustrated with the example of concrete pumping construction, the risk of blockage in concrete pumping construction is quantitatively analyzed by using the fuzzy evaluation model, and the corresponding risk management and control suggestions are given, which provides an important reference for future risk assessment research and risk management of concrete pumping construction project.