基于二维云模型的地铁深基坑施工风险评价

城市地铁车站深基坑工程受工程地质与水文复杂、周边建筑物与地下管线多、施工作业面狭窄等条件影响,施工过程不确定因素多,面临的风险不可低估。因此,建立基于C-OWA算子-二维云模型的地铁深基坑施工风险评价模型。通过文献研究以及实际调研,从基坑主体和周围环境两方面进行风险分析,建立地铁深基坑施工风险指标体系,采用C-OWA模型进行赋权,结合云模型加权集成的方法,构建综合评价云数字特征以及二维云图。实例分析显示,地铁深基坑施工风险评价结果属于临界风险,与实际情况相符,可为项目管理者提供理论参考。

Risk Evaluation of Metro Deep Foundation Pit Construction Based on Two-dimensional Cloud Model

The deep foundation pit project of urban subway station is affected by complex engineering geology and hydrology, many surrounding buildings and underground pipelines, and narrow construction work surface. There are many uncertain factors in the construction process, and the risks should not be underestimated. Therefore, a risk assessment model is established for subway deep foundation pit construction based on the C-OWA operator-two-dimensional cloud model. Through literature research and actual investigation, conduct risk analysis from both the main body of the foundation pit and the surrounding environment is made, and a risk index system is established for subway deep foundation pit construction, using the C-OWA model for weighting, and combine the weighted integration method of the cloud model to construct a comprehensive evaluation Cloud digital features and two-dimensional cloud images. Case analysis shows that the risk evaluation results of subway deep foundation pit construction are critical risks, which are consistent with the actual situation, and provide theoretical references for project managers.