Device for anchoring pageboy pre-tensioned reinforcement
(57) Abstract:Usage: in construction, in particular in devices for fastening tense pageboy valve with anchors. The inventive device for anchoring pageboy pre-tensioned reinforcement includes a ferrule having a conical broadening holes in contact with the tapered holes liners placed in them pageboy valves, in which each conical insert is made with an annular groove on the outer surface and formed of at least three asymmetrically spaced parts United by an annular elastic element placed in the groove, and a gap between adjacent surfaces of the parts of the conical liner not less than 0.01 of the diameter of its Central hole. 1 C.p. f-crystals, 2 Il. The invention relates to the construction, in particular to a device for fastening tense pageboy valve with anchors.A device for fastening the valve with the anchor heads, containing the holder, the support plate in which are formed holes for valves and thermowells made of durable plastic material, which is provided with an elastic inserts with Otani with the broadening under the sleeve, and the holes of the cage with bores whose shape corresponds to the shape of the sleeves, with elastic inserts and bearing sleeve mounted in the bores of the holes of the bracket. (see ed.St. USSR N 897998, class E 04 5/12, 1982 prototype).The main disadvantage of this device is the complexity and low reliability of the design.The technical result achieved by the proposed device is to simplify and increase the reliability of the design.This technical result is achieved by a device for anchoring pageboy pre-tensioned reinforcement containing a ferrule having a conical broadening holes in contact with the last cone liners placed in them pageboy valves, in which each conical insert is made with an annular groove on the outer surface and formed of at least three asymmetrically spaced parts United by an annular elastic element placed in the groove, and a gap between adjacent surfaces of the parts of the conical liner not less than 0.01 of the diameter of its Central hole.The internal conical surface of the support liners supplied with persistent thread in Berlin is Oh pre-tensioned reinforcement; in Fig. 2 a top view of a device for anchoring pageboy pre-tensioned reinforcement.Device for anchoring pageboy pre-tensioned reinforcement consists of a casing 1, a tapered bushing 2 with holes placed in them pageboy valve 3. The inner surface of the tapered bushing 2 is provided with a thrust screw 4, located along the entire height of the liner. Each conical liner 2 is formed with three asymmetrically spaced parts 5, United annular elastic element 6 is placed in the groove 7. This connecting part is installed with a clearance of 8 value not less than 0.01 diameter of the conical liner, and an annular elastic element 5 is placed in the groove 9.The yoke 1 has a conical bore and is made of structural steel.Conical inserts 2 have an increased surface hardness up to 60 units of Rockwell.The device operates as follows.Post-tensioning Jack pradalago beam 3 conical liners 2 zakladivaetsa in the holes of the cage 1. The annular elastic elements 5, while in the tapered hole, pressed by the inner threaded surface of the strands and fix the lock.A distinctive feature of the ing more than 2 times, improving the reliability of the fastening of the strands in the cage that ensures no slippage of the strands. Theatric strand can be individually pulled without removing the whole beam, which greatly simplifies the Assembly process design. 1. Device for anchoring pageboy pre-tensioned reinforcement containing a ferrule having a conical broadening holes in contact with the tapered holes liners placed in them pageboy valves, wherein each conical insert is made with an annular groove on the outer surface and formed of at least three asymmetrically spaced parts United by an annular elastic element placed in the groove, and a gap between adjacent surfaces of the conical liner not less than 0.01 of the diameter of its Central hole.2. The device under item 1, characterized in that the inner surface of the base of conical inserts are supplied resistant thread, located along the entire height of the liner.
SUBSTANCE: proposal is related to construction and repair of artificial structures, mostly bridges, namely to devices and accessories for production of works related to concreting of construction structures and facilities. Anchor device includes support-anchor plate that contains casing arranged with conical channel and protrusion with support surface rigidly fixed to the casing, collet element installed in conical bore of support-anchor plate and reinforcement spiral that interacts with support surface of support-anchor plate. Support surface of protrusion is installed in the plane that is located perpendicularly to longitudinal axis of casing conical channel at the distance H equal to 0.6-0.7 of conical channel length from the plane of its largest diameter, at that between casing and support surface of protrusion there is radial surface arranged with radius R equal to 0.2 - 0.35 of conical channel length.
EFFECT: reduction of structure material intensity and labour intensity of its manufacture with simultaneous reduction of stress concentration in concrete.
5 dwg, 2 tbl
SUBSTANCE: tendon comprises additional external reinforcing contour in the form of cylindrical rigid steel or nonmetal cartridge that is installed symmetrically relative to prestressed reinforcement and filled with concrete of at least B 15 grade; with concrete prestressing force in element within the limits from 5 N/sq.mm to 40 N/sq.mm and force of side thrust in cartridge from prestressing within the limits from 0 to 300 N\sq.mm. External cartridge may be arranged with rectangular or square section, and prestressed reinforcement - from coal plastic; at that reinforcement made of steel ropes may be installed in flexible nonmetal tubes with lubricant inside.
EFFECT: increased reliability.
5 cl, 2 dwg, 2 ex
SUBSTANCE: joint anchor bolt for consecutive assembly, installed into the place after reinforced concrete frame gets frozen, contains the first anchor bolt, made standing out from the reinforced concrete frame, the second anchor bolt set eccentrically against the axis of the first anchor bolt, connective part for connection of the first and the second anchor bolts, connective part wherein is made with a protruding part, standing out in the direction opposite to the first anchor bolt. As per the other version of the joint anchor bolt, centre of the connective part and axis of the first anchor bolt are coaxial, profile of the said connective part has a polygonal or round surface, and the second anchor bolt is arranged on the circle centered at the axis of the connective part and the first anchor bolt. As per the third version of the joint anchor bolt, connective part and the second anchor bolt are formed in the T-shaped spot, and the first anchor bolt is arranged on the butt side of the connective part. As per the assembly method of the joint anchor bolt for consecutive assembly, which is installed in place after the reinforced concrete frame gets frozen, at first, joint anchor bolt is prepared. Then cylindrical or multisided core is removed from the covering fittings band, preserving their position, when the fitting meets with the drilled hole for the anchor, whereat said core corresponds to the shape of the specified connective part and surrounds drilled hole. Thereafter holes for the second anchor bolt are drilled and joint anchor bolt is simultaneously secured.
EFFECT: reduced moment of deflection directly affecting the connective part due to the load over the said first anchor bolt.
18 cl, 19 dwg
FIELD: construction industry.
SUBSTANCE: invention refers to construction of pre-stressed reinforced-concrete structures, and namely protective reinforced-concrete coverings of nuclear power stations and can be used for controlling the operation of stressed groups of ropes during operation of nuclear power station. Anchorage for fixing a group of stressed ropes contains support flange 1 installed on reinforced-concrete housing 4 of building structure and inside which there are fixtures 6 for ropes 7, and cap 10 fixed on flange 1 and intended for protection of ends 11 of ropes 7, having liquid-type pressure gage 15 mounted in upper part of wall of cap 10. Internal cavity of cap 10 is divided into upper 16 and lower 17 sections, the boundary 20 between which is located between level 21 of ends 11 of ropes 7 and flange 1. At that, lower section 17 is intended for filling ropes 7 with paraffin, and upper section 16 with ends 11 of ropes 7 serves for being filled with non-compressible liquid, for example, brake fluid.
EFFECT: providing the possibility of controlling both breakage of rope inside pre-stressed building structure, which is characterised with rope end released from channel former to free volume space under the cap, which thus decreases volume under cap, and possibility of controlling loosened rope at sliding in collet, which is characterised by sinking the rope end in channel former and thus increasing volume space under cap.
3 cl, 3 dwg
SUBSTANCE: reinforcement rod fixation device contains a body having a throughhole for the reinforcement rod insertion and embedded parts for installation between the reinforcement rod as inserted into the throughhole and the peripheral inner surface of the body. The peripheral inner surface of the body is shaped as a funnel. Each embedded element has hitching section on its peripheral inner surface coming in a fastening contact with the reinforcement rod and a conic surface formed on at least part of its peripheral outer surface that comes in surfacial contact with the body peripheral inner surface. The hitching section contains a section with female screw thread formed on the peripheral inner surface of the embedded elements designed so that to enable screwing onto the male screw thread section formed on the outer surface of the reinforcement rod. The body contains an insert section having a basically cylindrical shape and a flange section whose outer diametre exceeds that of the insert section. The flange section on the body outer periphery has a couple of flat sections positioned parallel to each other on opposite sides of the body throughhole central axis.
EFFECT: reinforcement rod fixture device can easily be fixed in a position relatively remote from the reinforcement rod end section; it ensures enhanced strength of cohesion to the reinforcement rod.
2 cl, 14 dwg
SUBSTANCE: invention relates to clamp of anchor designed for concrete element lifting and includes attachment mechanism for clamp attachment to lifting anchor and retaining plate intended for creation of load clamp supporting surface to limit load clamp rotation relative lifting anchor.
EFFECT: perfected design.
15 cl, 7 dwg
SUBSTANCE: supporting device is suggested which device creates support for edge lifting anchor designed for concrete parts lifting. The anchor includes head end engaging with load clamp of hoisting unit and body for its embedding into concrete element material. The supporting device is provided with surfaces for supporting edge lifting anchor relative to surface of poured concrete during concrete element spouting.
EFFECT: perfected design.
17 cl, 21 dwg
SUBSTANCE: shear bar of a boundary lifting anchor is proposed for an assembly wall panel. It is made in the form of a bar having a central part engaged with the upper edge of the lifting anchor when installed in the wall panel, and legs inclined downwards from each end of the central part. The lower part of each leg is shaped so that it is strongly engaged with concrete, where it is embedded. Shaping is made in the form of structural elements arranged in longitudinal direction at a certain distance from each other, each having mainly serrated shape. The front edge of each structural element is turned towards the central part so that whenever shear load is applied to the shear lug, legs are attached to concrete mainly with pressing loading applied to concrete in the area between two legs.
EFFECT: increased reliability.
6 cl, 7 dwg
FIELD: machine building.
SUBSTANCE: to protect the end of wire containing set of cables holding individually in system of the anchor securing the device contains skirt passing from face of the anchor securing system and located around the cables set, and multiple cases. The cables have appropriate end parts that project from the face of the anchor securing system, and that are individually inserted in cases, at that the cases are closed from outside of the ends. Connection between the skirt and cases closes the chamber limited by the face of the anchor securing system, skirt and cases. This chamber volume is filled by filler.
EFFECT: improved design.
12 cl, 4 dwg
FIELD: process engineering.
SUBSTANCE: claimed process is intended for protection of the end of rope composed of multiple parallel strands secured by tackle with front side, rear side and channels extending between said front and rear sides. Rope every strand is retained in appropriate groove of said tackle by appropriate retainer. Claimed process comprises fulfilment of protective material injection first step in, at least, several grooves of said tackle. The chamber is configured on at least one side of the tackle to have sections of multiple strands. Then, second step of injection is performed.
EFFECT: higher efficiency of the process.
15 cl, 5 dwg