sacem1
Mechanical
- Nov 26, 2002
- 186
I'm in the process of designing some welded plate square section columns to support over head crane rails.
The section will be 12" x 12" with 18' height 3/8" A-36 plate welded continuosly on the corners with E70S MIG weld.
In order to help during fabrication we will put square plates at 3' intervals as diafragms welded to 3 sides an only covered by the last plate.
There are going to be 3 paralell rails with 2 overhead cranes 2 metric tons capacity each on either side, the columns are set at 34' b.c. and the rail is 113' long.
Here is now the question: If instead of putting the steel plate diafragms inside the columns, we add some steel rebars welded to the inner side of the plates and then fill the whole column once set in place with high grade concrete, will they offer better vibration dampening effect than plain steel ones, and what will the long time effect on the concrete inside these columns by the work of the cranes?
In Italy they have developed a very interesting type of machine tools made of steel weldings filled up with concrete obtaining better dampening effects on vibrations than the usual cast iron machines while being able to use higher strengh alloys in the wear surfaces of the machines and plain structural steel in the rest, so I was wondering if this would apply to these crane columns.
Thanks for any help you can give me.
SACEM1
The section will be 12" x 12" with 18' height 3/8" A-36 plate welded continuosly on the corners with E70S MIG weld.
In order to help during fabrication we will put square plates at 3' intervals as diafragms welded to 3 sides an only covered by the last plate.
There are going to be 3 paralell rails with 2 overhead cranes 2 metric tons capacity each on either side, the columns are set at 34' b.c. and the rail is 113' long.
Here is now the question: If instead of putting the steel plate diafragms inside the columns, we add some steel rebars welded to the inner side of the plates and then fill the whole column once set in place with high grade concrete, will they offer better vibration dampening effect than plain steel ones, and what will the long time effect on the concrete inside these columns by the work of the cranes?
In Italy they have developed a very interesting type of machine tools made of steel weldings filled up with concrete obtaining better dampening effects on vibrations than the usual cast iron machines while being able to use higher strengh alloys in the wear surfaces of the machines and plain structural steel in the rest, so I was wondering if this would apply to these crane columns.
Thanks for any help you can give me.
SACEM1
