Three-dimensional iso-truss structure

Details Three-dimensional iso-truss structure Three-dimensional iso-truss structure

E - Fixed Constructions

04

C

E04C 3/04 (2006.01) E04C 3/08 (2006.01) E04C 3/40 (2006.01) E04H 12/00 (2006.01)

Patent

CA 2285980

A structural member (10) having greatly enhanced load bearing capacity per unit weight has a plurality of helical components (12) wrapped around a longitudinal axis (14). The helical components have straight segments (32) rigidly connected end to end in a helical configuration. In a basic repeating unit, three helical components (12) have a common angular orientation, a common longitudinal axis (14), and are spaced apart from each other at equal distances. Another three reverse helical components (12) also have a common angular orientation, a common longitudinal axis (14), and are spaced apart from each other at equal distances, but have an opposing angular orientation. These six helical components (12) appear as a triangle when viewed along the axis due to the straight segments (32). An additional six helical components (12) are configured as above but rotated with respect to the first six components (12) such that the member (10) appears as a six-pointed star and when viewed from the axis.

L'invention concerne un élément structural (10) ayant une force portante par unité de poids sensiblement accrue, et présentant plusieurs éléments hélicoïdaux (12) enroulés autour d'un axe longitudinal (14). Lesdits éléments présentent des segments rectilignes (32) accouplés de manière rigide bout à bout selon une configuration hélicoïdale. Dans une unité récurrente de base, trois éléments hélicoïdaux (12) ont une orientation angulaire commune, un axe longitudinal commun (14) et sont placés à égale distance les uns des autres. Trois autres éléments hélicoïdaux inversés (12) ont également une orientation angulaire commune, un axe longitudinal commun (14), sont placés à égale distance les uns des autres, mais présentent une orientation angulaire opposée. Ces six éléments hélicoïdaux (12) forment un triangle lorsqu'on les regarde le long de l'axe, de par les segments rectilignes (32). Six éléments hélicoïdaux supplémentaires (12) sont configurés comme ci-dessus mais tournés par rapport au six premier éléments (12) de sorte que l'élément (10) forme une étoile à six branches lorsqu'il est vu depuis l'axe.

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