Stiff girder constructed with flexible cable ropes

Details Stiff girder constructed with flexible cable ropes Stiff girder constructed with flexible cable ropes

1982-01-22

1984-08-07

Bell, J. Karl

Static structures (e.g., buildings)

Cover or enclosure suspended by flexible means

52223R, F04B 700

Patent

active

044635265

ABSTRACT:
The invention is concerned with a stiff flat girder which basically consists of a top- and a bottom chord (4a, 3b), compression members (ab) between and diagonal bracings (1a, 3a, 2b, 4b) in the spacings (a, b), in which both chords and all diagonal bracings are made of flexible cable/rope. It is preferred to let the main cables (1a, 1b; 2a, 2b; 3a, 3b; 4a, 4b) continue uninterrupted from one end (L) to the other (R) between the fixed supporting mountings (Lp, Rp; Lq, Rq), whereby the main cables (1, 2, 3, 4) at least once follow the direction of a diagonal bracing (1a, 3a, 4b, 2b). Furthermore it is preferred to have one cable of the top chord continue endlessly in one cable of the bottom chord, the cable circuit (4a, 4b, 34R, 3b, 3a, 34L; 1a, 1b, 12 R, 2b, 2a, 12L)formed being guided round the fixed mountings with controlled friction. A stiff, intrinsically safe, light girder structure is formed, allowing a great variety of architectural shapes, applicable for small up to the largest spans.

REFERENCES:
patent: 2693195 (1954-11-01), Frieder et al.
patent: 3410039 (1968-11-01), Brezina

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