城市地下综合管廊基坑施工风险评价研究

Research on risk assessment of urban underground comprehensive pipe gallery foundation pit construction

为控制城市地下综合管廊基坑施工风险,根据城市地下综合管廊基坑工程项目特点,构建基坑施工风险评价体系;使用模糊层次分析法和CEEMDAN方法对实际工程进行风险评价,将主观评价数据进行客观处理,得到各评价指标的最终权重;根据云模型理论生成标准评价云模型,并结合专家意见和最终权重生成综合评价云模型;最后将该模型用于实际工程风险评价,得出该工程处于“较低风险”。评价结果与实际情况相符,表明该模型的准确性和实用性,且能有效规避专家打分的主观因素影响。

To control the construction risks of urban underground comprehensive pipe gallery foundation pits,a risk assessment system for foundation pit construction is constructed based on the characteristics of urban underground comprehensive pipe gallery foundation pit engineering projects;Using fuzzy analytic hierarchy process and CEEMDAN method to conduct risk assessment on actual projects,objectively processing subjective evaluation data to obtain the final weights of each evaluation index;Generate a standard evaluation cloud model based on cloud model theory,and combine expert opinions and final weights to generate a comprehensive evaluation cloud model;Finally,the model is applied to actual engineering risk assessment,and it is concluded that the project is at a“lower risk”.The evaluation results are consistent with the actual situation,indicating the accuracy and practicality of the model,and effectively avoiding the subjective factors of expert scoring.