T-Bracket Beam Analysis 1

[E-N-E ENG]

What's the pull force on the top bolt in terms of the point load, F?

Need to determine the pull force on the top bolt to find the pre-load (T = k x F x d --> F = T / (k x d)) to ensure no separation.

Thank you folks!

 

[HTURKAK]

You may look to AISC Design Guide 1 Base Plate and Anchor Rod Design.
Assuming the base plate is rectangular or square , pull force P would be approximately P=8F/6= 1.33F.
Don't pull too much the concrete may break out. ( check probable failure modes).

 

[XR250]

You may look to AISC Design Guide 1 Base Plate and Anchor Rod Design.
Assuming the base plate is rectangular or square , pull force P would be approximately P=8F/6= 1.33F.
Don't pull too much the concrete may break out. ( check probable failure modes).

My guess is there is no concrete involved here.

 

[Tomfh]

4/3 F

 

[E-N-E ENG]

You may look to AISC Design Guide 1 Base Plate and Anchor Rod Design.
Assuming the base plate is rectangular or square , pull force P would be approximately P=8F/6= 1.33F.
Don't pull too much the concrete may break out. ( check probable failure modes).

[Moment load F x 8] / [distance from top bolt to bottom bolt 6] = 8F/6 = 4F/3

Correct explanation?

Thank you

 

[EngDM]

[Moment load F x 8] / [distance from top bolt to bottom bolt 6] = 8F/6 = 4F/3

Correct explanation?

Thank you

You bet

 

[E-N-E ENG]

Folks... trying to analyze this further:

At interface 1 - plate to SEPARATE (BOLT 1 IN TENSIONS)
At interface 2 - plate to COMPRESS (BOLT 2 IN MOMENT ??)

Is the BOLT 2 under MOMENT load (top half in tensions and bottom half in compression)?

Thank you

 

[Stress_Eng]

8 x F = (1x edge + 2 + 4) x T1 + (1x edge) x T2
T1 / T2 = (4 + 2 + edge) / edge (ratio of distances from free edge contact point)
T1 = tension load at bolt 1
T2 = tension load at bolt 2
edge = bolt No.2 edge distance
Take moments at bolt 2 free edge contact point

 

[HTURKAK]

At interface 1 - plate to SEPARATE (BOLT 1 IN TENSIONS)
At interface 2 - plate to COMPRESS (BOLT 2 IN MOMENT ??)

It is not possible to figure out the full picture ( at least for me) .
Some questions ;
- What is the red line at the interfaces ? Rubber gasket? ( the gasket will kill the joint stiffness)
- What about the load F is this a dynamic load?
- What is the shape of T bracket and how many bolts will be used?

Short answer ;
If the red lines are not gasket, if the bolts 1 and 2 both preloaded , the joint will not separate as long as the bolts do not experience tension more then preload value . ( The preload value shall be more than 4F/3.).
The bolt 1 will be in tension with preload value and will experience more tension if the joint separates,
The bolt 2 will be in tension with preload value and will not experience compression even if the joint separates,
The shear force will be resisted by the friction developing at the interface,
Bolt 2 may subject to prying forces depending on the force level .