Radye Temel Direct Connection-Enlarge Connection Area

[proisa]

Hello, In the attached project file, I looked at the basic stapling controls between choosing the Radye Basic connection method directly - making analysis by magnifying 0.5h. When I analyzed larger projects with 0.5h enlargement, the columns that did not provide punching control provided direct connection. In most columns, Vpd values are smaller in direct connection. As the coefficient in front of h gets closer to 1, even larger Vpd values appear. What is the logic of this? I've read the help file but it's not very descriptive. Thanks.. Note: The project has been solved in ideCAD Static 7.022.

 

[Ismail Hakki Besler]

The finite element plane of the raft floor is passed through half the height of the raft floor. In this case, the loads transferred from the column to the raft spread at an angle of 45 degrees from the upper level of the raft to the middle of the plate. It is appropriate to enlarge the area where the column presses the plate by 0.5 h. If it is not done in this way, there may be sudden ground stress jumps in the column region.

 

[HakanŞahin]

Also, the punching load vpd depends on the ground stress value. It is normal for the Vpd value to change, as the ground stress value will change when the junction area is changed. Vpd = N - Zg * (b+d)(h+d) (b+d)(h+d) -> Punch area (m2) Zg -> Soil stress in the punching zone. (tf/m2) N-> Column axial load (tf)

 

[Erdem]

So why is there such an option? Why is there a direct choice, the only option is to enlarge the connection area.