Experimental Study on the Safety Assessment of Reinforced Concrete Shear Wall Structure with the Correspondence between Damage Image and Index

Table 4

Failure grade of reinforced concrete shear wall members based on skeleton curve.

Damage classification	Performance of skeleton curve	Note
Basically intact	Straight line, in the bearing capacity rising section	Components are basically in elastic stage
Mild	Bending but still before obvious horizontal deflection	No obvious plastic development of components
Moderate	The decrease of bearing capacity is less than 5%	Ductility such as shear failure and bending failure is poor, and the skeleton curve is required to be a finite area of failure
Critical	The decrease of ductile failure bearing capacity does not exceed 15%	The failure limit of ductile failure components is 85%
Failure	Decrease in bearing capacity exceeding limit	The continued load is in an unstable state, and the whole section concrete has basically been fully destroyed