Loads on structure under transport?
Loads on structure under transport?
(OP)
Hi everyone,
I am analyzing loads on a structure while it is being transported on a truck. This is a manufactured item that will barely be small enough for a truck transport. I know how it is planned to be positioned and held down. I will be using RISA 3D for an analysis. I would like to know specifically what kind of impact force to apply for bouncing up and down on the roadway. It seems like there would be a rule of thumb or a specification somehwere that addresses this. A coefficent to apply to the self weight would be ideal for a RISA static study. Does anyone know a reference or a rule of thumb to use? Thanks in advance!
I am analyzing loads on a structure while it is being transported on a truck. This is a manufactured item that will barely be small enough for a truck transport. I know how it is planned to be positioned and held down. I will be using RISA 3D for an analysis. I would like to know specifically what kind of impact force to apply for bouncing up and down on the roadway. It seems like there would be a rule of thumb or a specification somehwere that addresses this. A coefficent to apply to the self weight would be ideal for a RISA static study. Does anyone know a reference or a rule of thumb to use? Thanks in advance!






RE: Loads on structure under transport?
More info on the item would be useful.
RE: Loads on structure under transport?
It is a fiber reinforced composite structure for the power industry. No concrete at all. It will be formed in pieces and the assembled before shipping. It will be analyzed for lifting as well. My main concern is the forces that happen due to bouncing down the road.
RE: Loads on structure under transport?
They address impact factors for transporting wall panels. It seems reasonable to assume something similar for your structure (Maybe bump it up some to account for the uncertainty due to the different material)
RE: Loads on structure under transport?
RE: Loads on structure under transport?
The question you are asking is indeterminate, as is the math/stress solution if you can find/pick a "g" factor. They'll put it on a stiffer trailer, or one with stiffer suspension, or they'll find a larger pothole at higher speed on the next trip. PCI or trailer manufacturers may have some starting points for you. But, the rules of thumb you want may really be design of a good dunnage system to protect the most highly stressed, or vibration sensitive parts of the structure. And, you should have a feel for these locations from your basic snow, wind and lifting load calcs.
RE: Loads on structure under transport?
RE: Loads on structure under transport?
RE: Loads on structure under transport?
Shipping and Transporting are different. They will use "truck bed" once on site. The bottom beam will carry all the weight instead of the column during transportation.