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wind loads on a moving structure?
i am designing a bracing system for modified shipping containers to be shipped by train. would forces derived from asce7 be applicable to a moving structure. the train travels at 60 mph and the wind blows at 90 mph. i put them 90degs to each other and added them up. twopointfive questions:
1. is the force from a 3second gust higher than a constant wind ie train moving?
2. the structure is on top of a moving platform, the train car, is asce7 the correct reference? if not, what else is there besides the wind tunnel?
it's a cool problem. thanks for the help

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what about the centripetal force when the train is rounding a curve and is speeding at, say, 90 mph on a windy day ?
i would ask arema, asce 7 is not meant for this.
rwf7437 thanks, there is also a 2g lateral force to design for. should this be combined with a wind load? not sure. perhaps that is like a full siesmic and full wind load combination, which we rarely consider.
haynewp thanks, i'm checking it out, trying to get the loading without purchasing a railway design manual.

no trains are running full speed with 90 mph wind.
civilperson - i agree, but that doesn't really help. i could certainly imagine a train running at 60mph that encounters a head wind of 90mph. yes the train would slow down as my structures catch that breeze and transmit the forces into the rail car. wouldn't the structure "see" 150mph wind for a moment?

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