Vibration of Reinforcement in Pipe supports
Vibration of Reinforcement in Pipe supports
(OP)
Hi,
I have a Reciprocating Foundation as shown in sketch given below, unfortunately due to construction changes some pipe supports where attached in the later stage. If the dowels are connected to the foundation as shown also the plinth and the block is poured as a
single pour.
When the pipes supported over the plinth starts vibrating a crack would be formed between the plinth and the block.
So the rebars connecting the plinth and the block would be subjected to a cyclic tension and shear.
At some point of time a plastic hinge may form in the rebar connecting the plinth and the block and may fail in the later stage.
Please correct me if I am wrong and also please tell me an alternate solution.
https://res.cloudinary.com/engineering-com/image/upload/v1482940790/tips/PUMP_FDN_hrd3de.pdf

I have a Reciprocating Foundation as shown in sketch given below, unfortunately due to construction changes some pipe supports where attached in the later stage. If the dowels are connected to the foundation as shown also the plinth and the block is poured as a
single pour.
When the pipes supported over the plinth starts vibrating a crack would be formed between the plinth and the block.
So the rebars connecting the plinth and the block would be subjected to a cyclic tension and shear.
At some point of time a plastic hinge may form in the rebar connecting the plinth and the block and may fail in the later stage.
Please correct me if I am wrong and also please tell me an alternate solution.
https://res.cloudinary.com/engineering-com/image/upload/v1482940790/tips/PUMP_FDN_hrd3de.pdf








RE: Vibration of Reinforcement in Pipe supports
RE: Vibration of Reinforcement in Pipe supports
RE: Vibration of Reinforcement in Pipe supports
I don't know how much unbalanced force we are talking here, but you may have to run some rough numbers to see what it would take to create unacceptable vibrations. (Or do a full blown dynamic analysis.) Just eyeballing it, I wonder more about motion than cyclic issues in the re-bar.
RE: Vibration of Reinforcement in Pipe supports