Vertical transfer of load from slab to walls leads to a concentration of shear stress in the slab at wall ends and corners, which needs to be considered in punching shear design. This issue is not addressed in EN 1992 (2004) and only partially addressed in fib Model Code 2010 leaving ...
it is decreased with a sharp drop which indicates the rupture caused by punching shear in the slab. In the specimens S1 and S2 (specimens strengthened by bar inside the groove by EBRIG method)
At ultimate limit state, flat slabs are governed by their punching resistance at the slab-column connections, where high bending moments and shear forces develop. This aspect, together with the control of deflections at serviceability limit state, determine the thickness of the slab, ruling the eco...
Punching shear behaviour analysis of RC flat floor slab-to-column connection - Vainiûnas, Popovas, et al. - 2002Vainiunas, P.; Popovas, A.; Jarmolajev, A. Punching shear behaviour analysis of RC flat floor slab-to-column con- nection. Journal of Civil Engineering and Management, ...
In RF-PUNCH Pro, enlarged column heads can be arranged at point-supported punching shear points, thus increasing the shear force resistance of a reinforced concrete floor. In the following article, we will show the punching shear design with the optional
Underground parking structures often consist of flat slabs connected by columns, for which punching shear is often the most critical design criterion. In fire conditions, the punching load can increase due to restraint of the thermal curvature of the slab or due to the expansion of the columns....
The current Korean Standard KDS 14 has adopted a strain-based shear strength model for evaluating the punching shear strength of slab–column connections reinforced with steel rebars. Thus, this study evaluated the applicability of the KDS 14 design model for slab–column connections reinforced with ...
punching shear 1.Theshear stresscalculated by dividing the load on a column by the product of its perimeter and the thickness of the base or cap, or by the product of the perimeter taken at one-half the slab thickness away from the column and the thickness of the base or cap. ...
Shear mechanisms govern behaviour of RC flat slabs subjected to impact loading. • Two-phase model developed to predict response of slab subjected to impact loading. • Punching shear failure criterion considering material dynamic effects is proposed. • Shear demand and strength models applied to...
In Spain, however, it is traditional practice for contractors to first place the longitudinal reinforcement in the slab’s formwork and then set punching shear stirrups without encircling the main longitudinal reinforcement bars but engaging them with construction wire, or by other means not officially...