ABSTRACT
To scientifically and effectively carry out a comprehensive safety risk assessment in the construction process of foundation pit engineering, a complete safety risk assessment model of foundation pit based on construction monitoring data coupled with fuzzy analytic hierarchy process and set pair analysis method (FAHP-SPA) is established. First, a comprehensive safety risk evaluation system for foundation pits is established with monitoring items as evaluation indicators; then, the traditional FAHP evaluation index empowerment process is improved, the principle of expert group decision-making is adopted, and the set pair analysis method is introduced to consider the identity and consistency of opinions among experts. Finally, the safety risk classification of the foundation pit is carried out with the monitoring and alarm value as a reference, and the on-site monitoring data is used as the analysis data.
