Anti-Impact Performance Enhancement of Two-Way Spanning Slab through the Implementation of Steel Trussed Bars

Table 10

Results of parametric study samples.

Sample	Initial drop acceleration (g) at 20 cm from the center of the slab		Impact load (kN) at initial drop	Initial concrete stress (MPa) in the drop impact zone		Initial drop displacement (mm) measured 20 mm from the bottom face center	Initial drop-induced residual displacement (mm) at a 20 mm offset from the center of the slab’s bottom face	Displacement (mm) at total failure beyond drop initiation position	DDE^+ (J) upon reaching total failure
	Max	Min		Top face	Bottom face
Cϕ6	88.75617	−80.0309	195.54	102.6	19.03	0.82087	0.5220267	26.501	77.205
TBϕ3Orth	88.646	−78.902	192.704	94.01	21.32	0.87561	0.5944608	9.1	55.2723
TBϕ3Dia	88.2752	−78.9325	204.619	92.54	20.91	0.90107	0.5757206	18.787	40.8717

⁺DDE: damage dissipation energy.