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Reduced control perimeters to be used for simplified approaches accounting for calculated shear force distributions are calculated using both NLFE approaches.
The shear resistance should be checked along control perimeters.
The punching resistance of column bases should be verified at control perimeters within 2.0 d from the periphery of the column.
The shear resistance should be checked along control perimeters (at the perimeter of the loaded area u0 and at the basic control perimeter u 1 ).
For the various control perimeters, that is, for different values of a and ratio a/d the following theoretical analysis was done, according to Halvonik et al. (2016): the reduced punching shear force VEd,red (a) of various control perimeters was calculated, and as a governing value was adopted the minimum value of VEd,red (a).
One may conclude from columns 4 and 9 that for shear slenderness ratios, e.g., ( a/d approx 2. 5 ) one gets control perimeters at the distance ( a_{cr} approx d ) from the column edge, which corresponds to the slope of the punching body of 45°.
Similar(53)
This is due to a potential concentration of shear forces along the control perimeter.
All factors investigated have been proven to influence the shear force distributions along the control perimeter around the support.
It is shown in this paper that this can be consistently considered by means of the shear-resisting control perimeter.
Tests show that the punching shear resistance depends on the control perimeter of punched concrete frustum and shear connectors.
Based on these influencing factors, a new method was developed to determine that the control perimeter section produces the smallest shear strength.
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