基于DEMATEL-ISM的泵送混凝土堵管事故风险因素分析

作为高层建筑施工的关键性环节，泵送混凝土质量影响因素复杂。以泵送混凝土堵管事故风险因素为研究对象，构建DEMATEL-ISM模型，明确影响堵管事故风险的关键因素及各因素间的层级结构和作用机理。结果表明：泵送混凝土堵管事故风险的22个影响因素可划分为4个层级，其中混凝土配合比合理性是影响堵管事故风险最核心最根本的因素，对其他因素的影响程度最大；混凝土施工流动性、输出压力稳定性和管道光滑度对堵管事故风险的影响作用最直接。

Risk Factors of Pumping Concrete Pipe Plugging Accident Based on DEMATEL-ISM

As the key link of high-rise building construction, the factors that affect pumping concrete quality are complex. The risk factors of pumping concrete pipe blocking accident are taken as the research object, and the DEMATEL-ISM model is constructed to clarify the key factors affecting the risk of pumping concrete pipe blocking accident and the hierarchical structure and action mechanism of each factor. The results show that the 22 influencing factors of pumping concrete plugging accident risk can be divided into four levels, in which the rationality of concrete mix ratio is the most core and fundamental factor affecting the risk of pumping concrete plugging accident, and has the greatest influence on other factors. Concrete construction fluidity, output pressure stability and pipeline smoothness have the most direct effect on the risk of pipe blocking accident.