Fuzzy Comprehensive Evaluation Method of Masonry Structure Safety Based on Grey Clustering Theory
Table 7
Evaluation criteria of clustering indexes of the foundation, column and wall, beam, floor slab, and parapet.
Grey class
Bearing capacity
Deformation (mm)
Cracks (mm)
Structure
Ratio of height to thickness
Connections and other structures
≥1.0 ≥0.95
≤10 ≤30
≤0 (0.2) ≤5 (0.3)
Meets or does not meet the current design code
Does not meet the requirements of the country’s current design code and exceeds the prescribed limit of 10%
≥0.90 <0.85
≤60 >90
≤10 (0.4) ≤15 (0.5)
Accurate connection mode and the structure meet the current code, with no defect or only partial surficial defects and working properly
Wrong connection mode with serious defects in the structure which have caused deformation, loosening, cracking, and displacement or have caused other damage
Note. : the design value of resistance; : the design value of action effect; and : the structural importance factor.
