Mechanically Anchored
The effective tensile capacity of a Mechanically Anchored bolt is dictated by the weakest of the following components:
- Anchor Capacity
- Plate Capacity (i.e., plate nut-thread assembly capacity)
- Tensile Capacity (of the steel)
Therefore, when you enter these parameters in the Define Bolt Properties dialog, only the lowest valued parameter will be used in the analysis. The other two values will not be used.
General
Force Application and Orientation
- Force Application: Active or Passive
- Use Bolt Orientation Efficiency (optional): Cosine Tension/Shear or Linear Tension/Shear
Tensile
- Tensile Capacity
- Plate Capacity
- Anchor Capacity
Shear
- Use Shear Capacity (optional): Shear Capacity
Bolt Force Diagram
When a Mechanically Anchored bolt intersects a block plane, it does not matter where the block plane intersects the bolt. The same force will be applied to the block, regardless of the point of intersection along the length of the bolt.
F = min (f1, f2, f3)
Where:
f1, f2, f3 are the anchor, steel and plate capacities, respectively.
The Force Diagram for a Mechanically Anchored bolt is simply a horizontal line, representing a constant value of applied force, regardless of where a block plane intersects the bolt.
