Numerical Evaluation of the Opening Effects on the Reinforced Concrete Slab Structural Performance

Table 7

Obtained parameters and results from models with opening with different areas under loading in X direction.

Deterioration of resistance (%)	Deterioration of stiffness (%)	Diaphragm drift at maximum resistance (mm)	Maximum resistance (kN)	Stiffness (kN/mm)	Opening ratio	Opening size	Model name
—	—	1.74	629.71	3401.51	—	—	X
23.54	23.96	1.23	481.49	2586.52	4.5	1.06 × 1.06	X-1-1
37.89	39.93	1.61	391.10	2043.31	16	2.00 × 2.00	X-1-2
44.59	43.50	1.89	348.95	1922.02	25	2.50 × 2.50	X-1-3