E - Fixed Constructions – 01 – F
Patent
E - Fixed Constructions
01
F
E01F 5/00 (2006.01) B21D 51/16 (2006.01) E04C 2/32 (2006.01)
Patent
CA 2118145
Soil/metal supporting structures commonly include panel sections having a short radius of curvature in the range of 750 mm to 2,500 mm. In such soil metal supporting structures the panels are of heavy gauge in the range of 2 mm to 10 mm thickness. Usually, expensive tooling and forming techniques are required to cold form the heavy gauge material into a curved shaped having such short radius. Such expensive techniques have been eliminated by this invention by virtue of the improvements comprising: a) the panels have a high degree of ductility before being cold formed, such high degree of ductility being determined by a ratio of specified minimum yield strength to specified minimum tensile strength equal to or less than 0.8; b) the panels are cold formed with cross-corrugations in each of the inside ridges of the longitudinally formed corrugations of the panel, the cross-corrugations are sinusoidal and cross section and allow the cold forming of a short radius panel on a consistent basis without dislodging panel shape to facilitate thereby interconnection of the panels for the structure; c) the cross-corrugations have a depth in the range of 4 mm to 12 mm and a pitch of 40 mm to 70 mm; and d) the cold formed panels of short radius by virtue of the sinusoidal shaped cross-corrugations provide a finished panel with marginal increase in ductility, thereby allowing for either plastic or elastic analysis in providing the soil/metal supporting structure.
Major Jean-Louis
Mccavour Thomas C.
Ail International Inc.
Sim & Mcburney
LandOfFree
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