Lateral Motion of A Frame
Lateral Motion of A Frame
(OP)
Guys,
I have an A Frame that is moving laterally, I need some advice on how to limit lateral motion its experiencing when out to see.
I'm attaching some drawings here and some pictures.
Any advice?
Thank You






RE: Lateral Motion of A Frame
You don't give limits, can you cross brace between the verticals, that would be easiest and most effective, it could improve the design parameters for the verticals as well but the calculation should be performed by someone who knows what she is doing. To make it a rigid frame would increase the demand for an experienced structural engineer.
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Lateral Motion of A Frame
RE: Lateral Motion of A Frame
@paddington
yes, it was contracted to a design firm.
Some bracing was done but its limited by cables running between the beams.
@ishvaag
for each leg, the web is 'sandwich' between two 1" plate which goes between 1" pad eye on either side.
The Ibeam is used for a jumbo piston corer (JPC), and its experiencing both shock loads when it hits the bottom and also due to sea motion.
We're considering shortening the length of the A frame by 4', currently at 27' and also fabricating a guide for the JPC.
Still fishing for ideas/suggestions
Thank You
RE: Lateral Motion of A Frame
RE: Lateral Motion of A Frame
We've decided to shorten the A Frame by 6' as well as add more bracing as long as it doesnt interfere with the cables running between the vertical columns
thanks everyone.
still encouraging suggestions
RE: Lateral Motion of A Frame
RE: Lateral Motion of A Frame
Good point there, that what the geotechs call it, so the jargon was created
It works well on land based trials but when u factoring the pitch of the boat and bad weather, things start to move.
We've been having some very bad weather