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

Table 8

Obtained parameters and results from models with opening with different areas under loading in Z 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
—	—	1.00	537.34	3838.20	—	—	Z
18.22	23.07	0.83	422.63	2952.81	4.5	1.06 × 1.06	Z-1-1
33.01	43.33	0.83	329.48	2175.18	16	2.00 × 2.00	Z-1-2
34.72	53.21	0.96	318.69	2042.40	25	2.50 × 2.50	Z-1-3