Table 1.
Risk assessment indexes for deep foundation pit construction projects.
Table 2.
Grey semantic scale.
Table 3.
Weighted semantic scale.
Fig 1.
The flow chart of deep foundation pit construction risk evaluation based on the Grey-DEMATEL-Fuzzy Comprehensive Evaluation method.
Fig 2.
Excavation plan diagram.
Fig 3.
Distribution of causality-centrality.
Table 4.
Direct impact matrix S.
Table 5.
Integrated impact matrix Z.
Table 6.
Centrality and causality of risk factors.
Table 7.
Evaluation table of risk factors for deep foundation pit construction.
Fig 4.
(A) Weight [0.0, 0.3]; (B) Weight [0.4, 0.7]; (C) Weight [0.5, 0.9]; (D) Weight [0.7, 1.0].
Fig 5.
(A) Weight [0.0, 0.3]; (B) Weight [0.3,0.5]; (C) Weight [0.5,0.9]; (D) Weight [0.7,1.0].
Fig 6.
(A) Weight [0.0, 0.3]; (B) Weight [0.3, 0.5]; (C) Weight [0.4, 0.7]; (D) Weight [0.5, 0.9].
Fig 7.
(A) Weight [0.0, 0.3]; (B) Weight [0.3, 0.5]; (C) Weight [0.4, 0.7]; (D) Weight [0.7, 1.0].
Fig 8.
(A) Weight [0.0, 0.3]; (B) Weight [0.3, 0.5]; (C) Weight [0.4, 0.7]; (D) Weight [0.7, 1.0].
Fig 9.
(A) Weight [0.0, 0.3]; (B) Weight [0.3, 0.5]; (C) Weight [0.5, 0.9]; (D) Weight [0.7, 1.0].
Table 8.
Calculation results of risk levels of accident types for different evaluation models.
Table 9.
Calculation of the overall risk level of the different evaluation models.