Abstract:
A reinforcing bar with improved adherence for reinforced concrete component, consists of a metal profile section (1) in the form of a flattened strip of rectangular cross section with two opposite wide faces (10, 10′) on which longitudinally separated projecting anchoring portions are formed.
Abstract:
A molded concrete member has two facings, respectively active and passive, spaced from one another by a preselected distance, and between which is embedded a reinforcing cage. The cage has, on either side of a neutral axis, two layers, respectively active and passive, which are separated by a spacing. Each layer has at least one longitudinal solid bar of preselected cross-section, the spacing and the cross-section of the bars being determined in relation to loads to be applied, the two layers are respectively parallel to both facings of the molded element and are connected by transverse linking armoring.
Abstract:
The invention relates to a modular construction system for a covered structure of large section produced by assembling prefabricated elements, namely floor elements (1), side elements (2) placed on each side of the floor, and roof elements (4).The structure according to the invention is composed of at least two juxtaposed passage sections (S, S') having parallel axes (0, 0'), each bounded at the bottom by a floor element (1, 1') and at the top by a roof element (4, 4') and, at the sides, on the outside by a side element (2, 2') and on the inside by at least one intermediate pier (6) supported on the ground by means of a sole piece (7) interposed between the adjacent longitudinal sides (11, 11') of the two floor elements (1, 1') which frame it, said pier (6) being provided at the top with a longitudinal member (5) comprising two side walls (52) diverging in V-shape to form on each side of a median plane P1 two support surfaces (53) in the form of concave grooves on which rest the adjacent longitudinal sides (41) of the two roof elements (4, 4') framing the intermediate pier (6).
Abstract:
A method for producing a reinforced concrete part, having a tensioned portion subjected to pull stresses and tending to stretch under the load, and which includes a reinforcing frame with at least one tensioned longitudinal bar rigidly connected to the concrete by an adhesive connection that determines a tangential adhesive stress along the bar that varies on the basis of applied pull stresses. Each tensioned longitudinal bar has, on at least one portion of the length thereof, a discontinuous series of spaced blocking areas that each include a plurality of elements for anchoring into the concrete and which are separated from each other by a series of sliding areas, in each of which an increase in the adhesion stress above a limit value causes the bar to disengage, without disrupting the concrete, on at least a portion of the length between the two blocking areas with an extension of the bar corresponding to applied pull stresses, the extension being distributed over the entire length of the disengaged portion of the bar.
Abstract:
The invention concerns a tank for a fluid product, having a bottom (4) and a resistant side wall (10) composed of juxtaposed prefabricated panels (1) each comprising a wall element (2) covered, on an internal face (22), with a continuous sealing sheet (3) extended by three sections (33, 33′, 34) which cover respectively the lateral sides (23, 23′) and the lower side (24) of the wall element (2) and overlap on the outside of the wall (10). Said panels are placed on a slab (4) covered with a sealing sheet (42) and the adjacent overlapping sections of the sealing sheets (3, 42) covering the set of the panels (1) and the bottom (4) are connected together in a sealed fashion.Such a tank which is easy to build and to maintain, can contain drinking water or a polluting product.
Abstract:
A conduit for the circulation of fluid under pressure comprising a tubular enclosure delimited by a thin wall and fixed on a rigid base slab of molded material. The upper part of the enclosure comprises, in cross-section, at least three thin wall segments, including two lateral segments each extending from a lower side to an upper side, and at least one upper segment closing the enclosure by connecting the upper sides of the lateral segments. Each lateral thin wall segment is joined to a rigid support element of molded material fixed at its base to the corresponding side of the slab and comprising an inner surface conjugate with that of the lateral segment onto which the latter is applied. The inner surface extends from the level of the upper surface of the slab as to a level sufficient to maintain the rigidity of the lateral segment over its entire height.
Abstract:
The invention relates to a conduit for circulation of fluid comprising a sealed pipe (A) fixed to a rigid supporting body (B) comprising a horizontal base having a lower face bearing on a laying surface (C) and two lateral wings going up vertically along the sites of the lower section of the pipe (A), said supporting body (B) comprising, on either side of the tubular enclosure (A), a single-piece portion (31, 31′) having, as a transversal section, a L-shaped profile comprising a substantially vertical branch (32) forming the wing extending along the corresponding side of the enclosure (A) and a substantially horizontal branch (33) extending beneath the former in order to form at least a portion of the base (3) of the supporting body (B) resting on the ground (C).
Abstract:
A process for the construction of a semi-buried structure for the protection of a subgrade formed on a mountainside, and the structure thus constructed. The structure consists entirely of precast concrete elements forming a succession of adjacent sections, each consisting of three precast elements, respectively an upper covering element bearing, via longitudinal articulations, on two side elements comprising, respectively, a solid wall on the uphill side and at least one pillar on the downhill side, and each provided with a widened footing enabling the element simply to be placed on the ground, and with an upper portion in the form of a stringer on which are formed longitudinal portions for the articulated bearing of the corresponding lateral edge of the covering element. The invention applies, in particular, to the protection of highways or railroad tracks in mountainous locations.
Abstract:
An underground tubular structural system capable of having a very large cross section, for the construction of urban or rural conduits, underground passages and other civil engineering installations. At least two conduits (S1) (S2), namely a high conduit (S2) and a low conduit (S1), are superposed and at least the high conduit is formed in cross section by at least two prefabricated elements, namely a lower element (4) (6) in the shape of an inverted U capping the low conduit (S1) and bearing along two lateral sides (14) of the latter and an upper covering element (2') (5) capping the lower element (4) (6) of the high conduit and closing the section (S2) towards the top. One or more supplementary conduits can easily be added to an already existing conduit.
Abstract:
An underground tubular structural system capable of having a very large cross section, for the construction of urban or rural conduits, underground passages and other civil engineering installations. At least two conduits (S1) (S2), namely, a high conduit (S2) and a low conduit (S1), are superposed and at least the high conduit (S2) is formed in cross section by at least two prefabricated elements, namely a lower element (4) (6) in the shape of an inverted U capping the low conduit (S1) and bearing along two lateral sides (14) of the latter and an upper covering element (2') (5) capping the lower element (4) (6) of the high conduit and closing the section (S2) towards the top. One or more supplementary conduits can easily be added to an already existing conduit.