Vehicle surcharge at top of Retaining Wall
Vehicle surcharge at top of Retaining Wall
(OP)
How do you calculate or where would you find a chart for how to apply vehicle loads to the top of a retaining wall.
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Vehicle surcharge at top of Retaining Wall
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RE: Vehicle surcharge at top of Retaining Wall
RE: Vehicle surcharge at top of Retaining Wall
RE: Vehicle surcharge at top of Retaining Wall
RE: Vehicle surcharge at top of Retaining Wall
RE: Vehicle surcharge at top of Retaining Wall
RE: Vehicle surcharge at top of Retaining Wall
My understanding is that it is not meant to represent a truck parked for long periods of time at the top of a wall. Such a truck would cause a high point load, but the load would be distributed with depth using a Bousineque (sp?) or 2:1 approximation. Therefore the top of the wall may experience localized higer stresses, but overall less than the 250 psf.
How close to the wall will the trucks travel? A conservative approach would be to determine the loading on the wall due to a parked design vehicle or the 250 psf loading, and design for the highest loads. My assumption, having not done any calculations, is that if you design for the moment and shear of the 250 psf surcharge load (plus the appropriate soil loading, of course), you likely will be designing for a higher bending moment than the static truck loads.
RE: Vehicle surcharge at top of Retaining Wall
We have done MSE walls for the ramps to primary crushers on quarries that support 200000 lbs vehicles. Bearing capacity has not been an issue due to the good rock substrate typical of a quarry. Main issue is to have what I call a well designed concrete spreading slab with a minimum thickness of 12 inches and well reinforced. This slab will make the load evenly distributed on a larger area making the load easy for the MSE wall. We have used Keystone blocks with polyester grids and A-1-a backfill.