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High strength corrugated metal plate and method of fabricating same
| Details |
Inventors: Sivachenko, Eugene W.;
Assignee:
Primary Examiner: Shapiro; Jacob
Assistant Examiner:
Attorney, Agent or Firm: Townsend and Townsend
Corrugated steel plate is formed from a flat plate stock and has a length of at least about 12 feet, a corrugation pitch of at least about 12 inches, and a corrugation depth of at least four inches. The plate has thicknesses of up to one-half inch and more. Also disclosed are structures such as tunnel-type, heavy load-supporting structures defined by upright and horizontal structure portions which extend over no more than about 180.degree. while being capable of supporting up to 40 feet of ground fill and payload thereon. The corrugated plate can be used singly or as double, spaced-apart plate assemblies which are hollow or filled with concrete or a like material, including steel reinforcing bars for the concrete. The corrugated plate can also be formed into vertical, sectional retaining walls, bin type retaining walls, bridge abuttment walls, flat support surfaces such as bridge decking, open air structures, guard rails, sheet piling, etc. |
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DETAILED DESCRIPTION The present invention seeks to overcome the above-discussed shortcomings of the prior art by providing as a structural building element a prefabricated, corrugated plate capable of supporting large loads without requiring stiffeners, support beams and the like as was necessary in the past.
Generally speaking, a corrugated, high strength structural steel plate constructed in accordance with the present invention comprises a plurality of parallel, longitudinally extending, generally sinusoidally shaped corrugations defined by alternating convex and concave peaks and troughs.
The spacing between adjacent peaks and troughs in a direction perpendicular to the plate, or the depth of the corrugations, is at least about 4 inches.
The spacing between adjacent peaks and adjacent troughs in a direction parallel to the plate, or the pitch of the plate, is at least about 12 inches.
Furthermore, the peaks and troughs preferably have a curvature radius of at least about 2 inches.
This plate can be fabricated from flat metal stock supplied, depending on the thickness of the stock, either in coils or in relatively long, flat sections, normally of a length well in excess of about 12 feet, the longest prior art corrugated steel plate lengths that could be made by pressbraking sheet stock into a corrugated plate.
Thus, the plate of the present invention can be fabricated in length of as much as 30 feet or more, depending on the ultimate use of the plate.
Depending on the desired strength and rigidity of the corrugated plate the plate can be constructed from stock of any thickness.
For applications such as for the construction of highway overpasses, bridges, tunnels and the like the plate can have a thickness of three-eighth to one-half inch and more.
In accordance with this invention, such plate is constructed by passing it through a plate corrugator such as is described and claimed, for example, in the inventor's U.
S.
Pat.
No.
3,940,965 the disclosure of which is incorporated herein by reference
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