E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
61/64
E21D 11/08 (2006.01) E04B 1/18 (2006.01) E04B 1/344 (2006.01)
Patent
CA 1226448
ABSTRACT OF THE DISCLOSURE A prefabricated support and covering structure for constructing artificial tunnels, small bridges and the like is formed by arranging a number of modular bodies having the shape of a polygonal sector side-by-side in succession, the modular bodies being aligned along the longitudinal axis of the structure. Each modular body is constituted by at least one prefabricated element including two or reinforced concrete panels arranged in succession along the polygonal line which defines the cross-section of the prefabricated structure. A plurality of connecting and reinforcing rods extend from each panel to the adjacent panel close to the convex outer surface of the prefabricated structure. The adjacent panels of each prefabricated element have on their respective adjacent end faces a front edge substantially parallel to the longitudinal axis of the prefabricated structure and disposed in proximity to the concave inner surface of the latter. These two front edges of each pair of respective adjacent panels are brought into longitudinal abutment with each other upon erection of the structure so as to define, with the adjacent surfaces of the said end faces, a longitudinal space filled with a binding material cast on site, Means are provided for connecting together the adjacent prefabricated elements of the adjacent modular bodies so as to form the entire prefabricated support and covering structure.
483050
Macrae & Co.
Tensiter S.p.a.
LandOfFree
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