| 摘要 |
Herein is presented a new trough profile with double skid and double core placed facing each other in an inverted and stayed manner, with better mechanical and structural characteristics than the known structural profiles, which can be employed whether for the construction of ceiling or architectural arches armatures of great dimension, efficiently supporting dead-loads. The constitutive parts of this fundamentally one-piece rectangular-shaped profile from which outstands a set of exterior skids and a set of interior skids placed facing each other, as well as an upper core and a lower core to form a symmetric piece characterized by exterior skids of flat surface whose transversal cut comprises three main sections: a first straight vertical section, an intermediate section also straight and vertical, slightly displaced in relation with the plane axis which forms the stayed section and a straight and vertical terminal section aligned with the first section; from the interior skids are f ormed from a piece resembling the exterior skids, with the same sections, this is, a first interior section, an intermediate section displaced from the axis but with its stayed inverted image and, from an upper section remaining the exterior skids joined to the interior skid by means of a strip or fold at 90° placed in both first sections; of upper core consistent in a flat surface, also divided in three parts, horizontally placed where the first and third part are located in the same plane axis, while the intermediate third part joined to the other parts slightly offset from the plane axis, also forming a stayed part, the upper core remaining joined by its terminal ends to the set of exterior skids toward the third section of the skids; and where the lower core consistent in a stayed plate similar to the intermediate third part remains placed in an inverted way to the other and joined to the strips or folds at 90° from the first skids sections forming with this, a identical piece to the upper core in an inverted way in the stayed section. Therefore, the invention reach is subscribed to the universe of structural profiles employed for armatures construction.
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