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

Table 5

Correspondence between the damages and damage indexes of SW1.

Point	Displacement	Interstory drift	Damage index	Damage condition	Description	Damage image
						Mortar surface layer	Concrete surface layer
A	±1.81	1/1270	0.001	Basically intact	—	—	—
B	±3.95	1/582	0.016	Basically intact	The roots are slightly cracked but the cracks disappear after unloading
C	±6.08	1/378	0.037	Slight damage	Horizontal cracks appear, the mortar begins to get exfoliated from the concrete, and vertical cracks appear in the mortar
D	±7.94	1/290	0.063	Slight damage	The mortar is significantly exfoliated, the concrete is slightly cracked, and the longitudinal bars are yielded
E	±11.06	1/208	0.110	Slight damage	The horizontal main crack develops to half the height of the section
F	±13.98	1/165	0.158	Slight damage	The concrete in the compressed zone is slightly crushed, and vertical cracks appear in the concrete
G	±18.09	1/127	0.228	Slight damage	The sound of mortar exfoliation is heard during the loading process, and the mortar is crushed significantly
H	±22.84	1/101	0.325	Medium damage	The cracks of the two directions intersect each other, the concrete is crushed significantly, and the side mortar drops off
I	±29.79	1/77	0.471	Medium damage	The cracks feature even distribution and oblique development, the concrete crushing is intensified, and vertical cracks appear
J	±39.73	1/58	0.685	Severe damage	Large pieces of mortar drop off, and part of the concrete is crushed and drops off
K	±51.42	1/45	0.960	Severe damage	Large pieces of mortar drop off, the concrete is severely crushed and exfoliated, and the longitudinal bars are partially exposed
L	±62.7	1/37	1.295	Total damage	The concrete at each corner is completely crushed and drops off, and all bars are exposed and yielded