US 5,272,851 AGranted

Improvements to the devices for reinforcing concrete in compression and to concrete works thus reinforced

AssigneeFreyssinet International et Compagnie

InventorCarlos De La Fuente

Life of this patent

Estimating the term…

Loading patent…

Abstract

This is a device for reinforcing a concrete member (1) in compression, comprising at least one bar (3) housed without adhesion in a channel (2) hollowed out in said member. Each of the two ends of the bar is associated with a device adapted to cause it to bear longitudinally on the concrete of the member. One of these two devices, which is associated with at least one (3.sub.1) of the two ends of the bar (3) is a rigid frame (4) housed in a cavity (5) of the member accessible from the outside. The frame is arranged so as to receive in removable manner a thrust generator (7). One side of this frame having the bar end in question passing through it is arranged so as to interact with a unidirectional element (8) serving successively to cause the end to be pushed back by the thrust generator, and then to lock this end with respect to the frame in the direction corresponding to the return of the end into the frame.

Claims10

Dependent claims

A system for providing a reinforced concrete element which is subjected to external compression comprising:

an elongate concrete member having a longitudinal channel and an open cavity adjacent to a portion of the channel;
a bar resistant to a longitudinal compression which is housed without adhesion in said channel, said bar having a first end and a second end;
an anchoring means for anchoring said first end of said bar against movement from a compressive force exerted on said bar;
a rigid frame housed in the open cavity which said rigid frame is accessible through the open cavity, said frame including a first side which bears longitudinally on a portion of said concrete member to hold said bar in compression and a second side through which said bar extends;
a thrust generator means which is received in a removable manner in said frame through said open cavity for exerting the compressive force on said second end of said bar relative to said anchoring means and said first side;
and
a holding means which engages said bar and said second side for holding said bar in compression after said thrust generator means is no longer exerting the compressive force and said thrust generator is thus removed from the open cavity.

4 more elements

A concrete work having a portion operating in compression comprising:

a reinforced concrete element which is subjected to the compression including
(a) an elongate concrete member having a longitudinal channel and an open cavity adjacent a portion of the channel,
(b) a bar resistant to longitudinal compression housed without adhesion in said channel, said bar having a first end and a second end,
(c) an anchoring means for anchoring said first end of said bar against movement from a compressive force is exerted on said bar,
(d) a rigid frame housed in the open cavity which said rigid frame is accessible through the open cavity, said frame including a first side which bears longitudinally on a portion of said concrete member to hold said bar in compression and a second side through which said bar extends, and
(e) a holding means which engages said bar and said second side for holding said bar in compression after a thrust generator means which is received in a removable manner in said frame through said open cavity exerts the compressive force on said bar relative to said anchoring means and said first side;
and
a plurality of elements which exert a compression on said concrete element.

5 more elements

Dependencies are inferred from the claim text.