E - Fixed Constructions – 04 – C
Patent
E - Fixed Constructions
04
C
E04C 5/06 (2006.01)
Patent
CA 2308800
The present invention refers to stirrups and ties for structural members. Such stirrups and ties are used in all the structural members like columns, beams, slabs, footings, piles, chainages, lintels etc. The invention refers also to a method of reinforcement of structural members and to the structural members themselves. According to the invention the stirrup or tie consists of a load-bearing element (20) for the fixing of the longitudinal rebars (10) and for the undertaking of the tensile forces which develop during the loading of the structural member. The bearing element consists of at least one cell of closed shape (50) so that the flow of the tensile stresses developed in the cross section is closed and the stresses are not diffused to the concrete. The load-bearing element of the stirrup or tie in accordance to the invention has a continuous cross section and thus there are no free ends as in the known stirrups. In this way anchoring of the stirrups or ties is completely avoided. The closed cellular shape has no discontinuation and may be simple, i.e. rectangular, circular, T-shaped, I-shaped, etc. or complex i.e. square with inscribed rectangular, circular with inscribed square etc.
L'invention porte sur des étriers et fers de liaison pour armatures utilisables pour former tous types d'éléments structurels tels que des poteaux, des poutres, des dalles, des semelles, des piles, des chaînages, des linteaux, etc. Elle porte également sur un procédé de renforcement d'éléments structurels et sur les éléments structurels proprement dits. Lesdits étriers et fers de liaison sont des éléments porteurs (20) servant à la fixation des barres longitudinales (10) d'armature et encaissant les efforts de traction apparaissant lors de la mise en charge des éléments structurels. Un élément porteur consiste en au moins une cellule fermée (50) telle que le flux des contraintes de traction apparaissant dans la section transversale se referme et ne se propage pas dans le béton. La partie porteuse des étriers et fers de liaison de l'invention présente une section transversale continue et pas d'extrémités libres comme dans les étriers classiques, ce qui permet de se passer entièrement de l'ancrage des étriers et fers de liaison. La forme fermée des cellules, qui ne présente pas de discontinuités, peut être simple, par exemple rectangulaire, circulaire, en T, en I etc, ou complexe, par exemple carrée avec un rectangle inscrit, ou circulaire avec un carré inscrit etc.
Hill & Schumacher
Konstantinidis Apostolos
LandOfFree
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