CN212613919U - Prestressing force reinforcing apparatus - Google Patents

Abstract

The utility model relates to a building anchor technical field discloses a prestressing force reinforcing apparatus, include: the first anchor assembly and the second anchor assembly are oppositely arranged in a concrete groove of a concrete structure to be reinforced, and the carbon fiber reinforcements are embedded in the concrete groove and fixedly arranged between the first anchor assembly and the second anchor assembly, so that no extra space is occupied; the stress frame component comprises a stress frame component and a connecting frame component, the reaction frame component and the stress frame component are arranged oppositely, the reaction frame component is arranged on the concrete structure to be reinforced, and the stress frame component is arranged on the second anchorage device component through the connecting frame component; the tensioning component is arranged between the stress frame component and the reaction frame component and applies thrust to the stress frame component; the extension direction of the tensioning component is parallel to the axis direction of the carbon fiber bar, so that prestress is applied to the carbon fiber bar by tensioning outside the concrete tank, and the construction process is simple and convenient.

Description

Prestressing force reinforcing apparatus

Technical Field

The utility model relates to a building anchor technical field specifically is a prestressing force reinforcing apparatus.

Background

The CFRP (Carbon Fiber Reinforced Plastic, CFRP for short) has the advantages of high strength, corrosion resistance and the like, and is widely applied to the aspect of concrete structure reinforcement. The CFRP is prestressed and anchored on the beam, so that the deflection of the beam can be reduced, the normal use performance of the beam can be improved, the utilization rate of the material strength can be improved, and when a CFRP (slab or bar) bar is used for reinforcing a reinforced concrete structure, the embedded prestressed reinforcement is a very effective mode for improving the bearing capacity of the structure and the utilization rate of the CFRP material.

The existing CFPR prestress reinforcing device usually adopts a built-in mode, namely a tensioning end and an anchoring end are arranged at two ends outside a beam body.

Chinese patent CN108386002A discloses a carbon fiber reinforcement reinforcing apparatus for reinforced concrete beam slab, including the stiff end support, the stiff end ground tackle, the link, the stretch-draw end support, the stretch-draw end ground tackle, stretch-draw part and carbon fiber muscle, stiff end support and stretch-draw end support are fixed respectively at the reinforced concrete beam slab both ends of treating the reinforcement, the stiff end ground tackle is installed in the stiff end support, the stretch-draw end ground tackle is installed on the stretch-draw end support, carbon fiber muscle one end is connected to on the stiff end ground tackle, the other end is connected to on the stretch-draw end ground tackle, stretch-draw part fixed mounting is on reinforced concrete beam slab, stretch-draw part and link fixed connection, link and stretch-draw end ground tackle fastening connection.

The reinforcing device of the structure arranges the CFRP rib outside the concrete, occupies a larger space at the bottom of the beam after the installation is finished and the removable parts are removed, influences the impression and improves the manufacturing cost required by leveling, and is not suitable for reinforcing structures such as cantilever beams, bridge floors and the like because the finished surface is not flat with the original finished surface after the installation is finished; in addition, because above-mentioned structure reinforcing apparatus's jack and carbon fiber bar coaxial arrangement carry out the stretch-draw, if want to bury the carbon fiber bar in the concrete, then need also arrange the jack in the concrete, because the general specification of jack is great, lead to the construction inconvenient and the cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the CFRP muscle of overcoming among the prior art is arranged in the concrete outside, causes to occupy the bottom of the beam space great, influences the technical problem that impression and cost are high to a simple structure's the detachable prestressing force reinforcing apparatus of installation of being convenient for is provided.

Therefore, the utility model provides a prestressing force reinforcing apparatus, include:

the first anchorage device assembly is used for fixing one end of a concrete groove which is pre-arranged on a concrete structure to be reinforced;

the second anchor assembly is used for being arranged at the other end of the concrete tank opposite to the first anchor assembly;

the carbon fiber bar is suitable for being embedded in the concrete groove, one end of the carbon fiber bar is fixed on the first anchor assembly, and the other end of the carbon fiber bar is fixed on the second anchor assembly;

the reaction frame component is used for being installed on the concrete structure to be reinforced and is positioned outside the concrete tank;

the stress frame component is arranged on the second anchorage device component and comprises stress frame components arranged opposite to the reaction frame component at intervals and a connecting frame component connected with the concrete structure to be reinforced in a sliding mode, and the stress frame components can be directly stressed and transmit force to the connecting frame component and the second anchorage device component so as to apply prestress to the carbon fiber bars;

the two ends of the tensioning component are respectively arranged on the stress frame component and the reaction frame component and apply thrust far away from the reaction frame component to the stress frame component; the stretching direction of the tensioning component is parallel to the axial direction of the carbon fiber bar.

Optionally, the prestressed reinforcement device, the first anchor assembly and the second anchor assembly each include:

the sleeve matched with the concrete groove and extending along the extension direction of the carbon fiber bar is provided with a cavity, at least one end connected with the carbon fiber bar is an open end, the open end is connected with a positioning nut, and the positioning nut is provided with a positioning hole for the carbon fiber bar to pass through;

and two end parts of the carbon fiber bar respectively penetrate through the positioning hole and the opening end corresponding to the anchorage device component and are fixed in the corresponding cavity.

Optionally, the prestressed reinforcement device, the first anchor assembly and the second anchor assembly each further include:

the plate is connected with the sleeve, and the other end of the sleeve, which is opposite to one end connected with the positioning nut, is at least partially inserted on the plate; and

and the abutting piece is in threaded connection with the other end and abuts against the plate when the tensioning component applies thrust to the stress frame assembly. Optionally, in the pre-stress reinforcing device, the stop member is a nut with one closed end and a thread inside.

Optionally, the side wall of the sleeve is at least provided with a glue filling hole and an air hole communicated with the cavity.

Optionally, in the pre-stressed reinforcement device, the first anchor assembly and the second anchor assembly are respectively provided with a plurality of first connection holes for connecting with the concrete structure to be reinforced;

and the second anchorage device component is also provided with a plurality of second connecting holes for connecting with the stress frame component.

Optionally, the pre-stress reinforcing apparatus, the connecting frame assembly includes:

two connecting frame members relatively movably arranged on two sides of the concrete tank and used for connecting the stress frame member and the second anchorage device assembly;

one end of any connecting frame component is connected with the mutually-facing end surfaces of the stress frame component and the second anchor assembly, and the other end of the connecting frame component is connected with the side wall of the concrete structure to be reinforced in a sliding mode.

Optionally, any one of the connecting frame members of the pre-stress reinforcement device is L-shaped, and includes a first connecting frame member parallel to the plate of the second anchor assembly and a second connecting frame member perpendicular to the plate of the second anchor assembly;

the first connecting frame part is provided with a fourth connecting hole extending along the direction vertical to the extending direction of the tensioning part, and the two connecting frame parts can slide along the extending direction of the fourth connecting hole;

and the second connecting frame component is provided with a fifth connecting hole extending along the extension direction of the tensioning component, and the second anchor assembly and the stress bearing frame component can slide along the fifth connecting hole when receiving thrust.

Optionally, in the pre-stress reinforcing device, the stressed frame component and the reaction frame component are also in an L shape, and reinforcing ribs are respectively arranged on the stressed frame component and the reaction frame component.

Optionally, the prestressing force reinforcing apparatus, the tensioning member is the jack, all be equipped with on the mutual terminal surface that faces of reaction frame part with the stress frame subassembly with the coaxial projection that sets up of extension direction of tensioning member, tensioning member's both ends are spacing respectively on the projection.

The utility model discloses technical scheme has following advantage:

1. the utility model discloses a prestressing force reinforcing apparatus, include: the first anchorage device assembly is used for fixing one end of a concrete groove which is pre-arranged on a concrete structure to be reinforced; the second anchor assembly is used for being arranged at the other end of the concrete tank opposite to the first anchor assembly; the carbon fiber bar is suitable for being embedded in the concrete groove, one end of the carbon fiber bar is fixed on the first anchor assembly, and the other end of the carbon fiber bar is fixed on the second anchor assembly; the reaction frame component is used for being installed on the concrete structure to be reinforced and is positioned outside the concrete tank; the stress frame component is arranged on the second anchorage device component and comprises stress frame components arranged opposite to the reaction frame component at intervals and a connecting frame component in sliding connection with the concrete structure to be reinforced, and the stress frame components can be directly stressed and transmit force to the second anchorage device component so as to apply prestress to the carbon fiber ribs; the two ends of the tensioning component are respectively arranged on the stress frame component and the reaction frame component and apply thrust far away from the reaction frame component to the stress frame component; the stretching direction of the tensioning component is parallel to the axial direction of the carbon fiber bar.

According to the prestress reinforcing device with the structure, the carbon fiber bars, the first anchor assembly and the second anchor assembly are arranged in the concrete groove which is pre-arranged in the concrete structure to be reinforced, so that extra space is not occupied, the manufacturing cost is low, and meanwhile, the carbon fiber bars and the anchor assemblies are both arranged in the concrete groove, so that the prestress loss can be reduced; the stress frame assembly is installed on the second anchorage device assembly, the stress frame assembly comprises a stress frame component and a connecting frame assembly, a tensioning component is arranged on the stress frame component and the reaction frame component, the extension direction of the tensioning component is parallel to the axis of the carbon fiber bar, so that the extension direction of the tensioning component is not coaxial with the axis of the carbon fiber bar, prestress is applied to tensioning of the carbon fiber bar outside the concrete groove, and the non-coaxial arrangement facilitates the detachment of the tensioning component, the stress frame assembly and the reaction frame assembly.

2. The utility model discloses a prestressing force reinforcing apparatus, first ground tackle subassembly with second ground tackle subassembly all includes: the sleeve is matched with the concrete groove and extends along the extension direction of the tensioning part, a cavity is formed in the sleeve, at least one end connected with the carbon fiber bars is an open end, the open end is connected with a positioning nut, and a positioning hole for the carbon fiber bars to penetrate through is formed in the positioning nut; the end part of the carbon fiber rib penetrates through the positioning hole and the opening end and is fixed in the cavity; the plate is connected with the sleeve, and the other end of the sleeve, which is opposite to the end connected with the positioning nut, is at least partially inserted on the plate; and the abutting part is in threaded connection with the other end and abuts against the plate when the tensioning part applies thrust to the stress frame part. The sleeve and the carbon fiber bar are embedded in the concrete tank together, and the prestress level is kept by the bonding strength of the adhesive poured in the concrete tank; the positioning nut can prevent the cured adhesive from integrally sliding out of the cavity of the sleeve; the arrangement of the abutting piece enables the carbon fiber ribs to move along with the second plate, the second sleeve and the stress frame component of the second anchor assembly. The plate is fastened on the concrete through expansion bolts or chemical bolts, and the prestress level is kept by matching with the sleeve, so that the condition that the target requirement of the prestress level is low is met; and the plate and the resisting part are disassembled, and only the sleeve and the carbon fiber rib are kept in the concrete groove, so that the condition that the requirement on the prestress level target is low can be adapted.

3. The utility model discloses a prestressing force reinforcing apparatus, it is the threaded nut in one end confined to support the piece. Simple structure, convenient assembly and disassembly and low cost.

4. The utility model discloses a prestressing force reinforcing apparatus, stress frame subassembly a stress frame part and two relative movably arranged link parts, two link parts are L style of calligraphy, including the first link part parallel with the plate of second ground tackle subassembly and the second link part of the plate perpendicular to the second ground tackle subassembly, set up the fourth connecting hole perpendicular to the extension direction of stretch-draw part on the first link part, through the setting of fourth connecting hole, can be convenient for adjust the interval between two link parts so as to adapt to the width of waiting to consolidate the concrete body; the second connecting frame component is provided with a fifth connecting hole extending along the extension direction of the tensioning component, and the stress-bearing frame component and the second anchor assembly can be conveniently tensioned along the extension direction of the fifth connecting hole in the tensioning process through the arrangement of the fifth connecting hole, so that the functions of guiding and limiting are achieved.

5. The utility model discloses a prestressing force reinforcing apparatus, second reaction frame part with all be equipped with on the terminal surface that faces each other of second atress frame part with the axis parallel arrangement's of carbon fiber muscle projection, two the coaxial setting of projection. Through the arrangement of the convex columns, the tensioning component is convenient to mount.

6. The utility model discloses a prestressing force reinforcing apparatus, reaction frame part and atress frame part all are the L style of calligraphy, and all are equipped with the stiffening rib, through the setting of stiffening rib, can improve structural strength.

7. The utility model discloses a prestressing force reinforcing apparatus, reaction frame part, atress frame subassembly and stretch-draw part all can be demolishd after the stretch-draw finishes, and the first plate of first ground tackle subassembly, first second plate, the second of keeping off piece and second ground tackle subassembly simultaneously all can be according to the dismantlement of prestressing force target level selectivity so that reuse, and application scope is wide.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a prestressed reinforcement device according to the present invention;

fig. 2 is a schematic structural view of the prestress reinforcement device and the concrete structure to be reinforced according to the present invention;

fig. 3 is a schematic structural view (without a stress frame assembly, a reaction frame component and a tension component) of the prestressed reinforcement device of the present invention when the first anchor assembly, the second anchor assembly and the carbon fiber bar are fixed;

fig. 4 is a schematic structural view of a first sleeve of a first anchor assembly or a second sleeve of a second anchor assembly of the pre-stress reinforcement device of the present invention;

fig. 5 is a schematic structural view of a connecting frame member of the prestressing force reinforcing device according to the present invention;

fig. 6 is a schematic structural view of a positioning nut of the prestressing force reinforcing device according to the present invention;

fig. 7 is the utility model discloses a treat that reinforced concrete structure has seted up the schematic structure drawing in concrete groove.

Description of reference numerals:

10-a first anchor assembly; 100-a first connection hole; 11-a first sleeve; 110-a cavity; 111-a first glue hole; 112-a first vent; 12-a first plate; 13-a first stop;

20-a second anchor assembly; 21-a second sleeve; 221-a second connection hole; 22-a second plate; 23-a second abutment;

30-a reaction frame member; 31-a first reaction frame member; 311-sixth connection hole; 32-a second reaction frame member; 33-a first stiffening rib;

40-a force-bearing frame member; 41-a first force-bearing frame member; 411-third connection hole; 42-a second force-bearing frame member; 43-a second stiffening rib;

50-a connecting frame member; 51-a first connecting frame member; 511-a fourth connection hole; 52-a second connecting frame member; 521-a fifth connection hole;

60-a positioning nut; 61-annular stop;

70-carbon fiber ribs;

80-a tensioning member;

90-a concrete structure to be reinforced; 91-concrete tank.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 to 7, the present invention provides a prestressed reinforcement device, which comprises a first anchor assembly 10, a second anchor assembly 20, a reaction frame member 30, a stress frame member, a tension member 80 and a carbon fiber reinforced bar 70, wherein the first anchor assembly 10, the carbon fiber reinforced bar 70 and the second anchor assembly 20 are all disposed in a concrete groove 91 pre-installed in a concrete structure 90 to be reinforced. Referring to fig. 1, a first anchor assembly 10 is fixedly installed at the left end of a concrete groove 91, and a second anchor assembly 20 is installed at the right end of the concrete groove 91 and is not fixed, that is, the second anchor assembly 20 can slide along the concrete groove 91; the left end of the carbon fiber rib 70 is fixedly connected in the first anchor assembly 10 through an adhesive such as epoxy resin, and the right end is also fixedly connected in the second anchor assembly 20 through an adhesive such as epoxy resin; the reaction frame member 30 is installed on the upper surface of the concrete structure 90 to be reinforced and outside the concrete groove 91 between the first anchor assembly 10 and the second anchor assembly 20; the stress frame assembly is arranged on the second anchorage device assembly 20 and comprises a stress frame component 40 arranged opposite to the reaction frame component 30 at intervals and a connecting frame assembly connected with the concrete structure 90 to be reinforced in a sliding way; the two ends of the tensioning component 80 are respectively arranged on the reaction frame component 30 and the stress frame component 40, the tensioning component 80 can apply acting force towards the direction far away from the reaction frame component 30 to the stress frame component so as to increase the distance between the reaction frame component 30 and the stress frame component 40, and the second anchor assembly 20 and the stress frame component synchronously move towards the direction far away from the reaction frame component 30 to tension the carbon fiber ribs 70 so as to apply prestress to the carbon fiber ribs 70; the stretching direction of the tension member 80 is parallel to the axial direction of the carbon fiber bar 70.

As for the first anchor assembly 10 and the second anchor assembly 20, as shown in fig. 1 to 4, each of the first anchor assembly 10 and the second anchor assembly 20 is composed of a sleeve extending along the direction of the concrete groove 91 and a plate connected with the sleeve in an inserting manner, a cavity 110 is formed in the sleeve, external threads (not shown) are respectively arranged at two ends of the sleeve, a positioning nut 60 is screwed on the external threads at one end (the end close to each other), as shown in fig. 6, one end of the positioning nut 60 is open, the other end is an annular blocking part 61 with a positioning hole (not shown) formed in the middle, and the annular blocking part 61 and the positioning nut 60 are of an integral structure; the external thread at the other end (the end opposite to each other) of the sleeve is screwed with a stop piece, the stop piece abuts against the plate in the process of tensioning by the tensioning component 80, so that the carbon fiber rib 70 moves along with the sleeve and the plate, as shown in fig. 1, the stop piece is a nut with one open end and the other end completely closed; two through holes communicated with the cavity are formed in the side wall of the sleeve, and one through hole with a larger diameter is a glue filling hole and is used for filling an adhesive into the cavity so as to fixedly connect the carbon fiber rib 70 in the cavity 110 in the sleeve; the other through hole with the smaller diameter is an air hole, so that air is exhausted when the adhesive is poured, and the pouring is smoother. Optionally, the first plate 12 and the first sleeve 11 of the first anchor assembly 10 may be detachably connected or may not be detachably connected, that is, fixedly connected, preferably detachably connected; similarly, the second plate 22 and the second sleeve 21 of the second anchor assembly 20 may be detachably connected or may not be detachably connected, i.e., fixedly connected, and preferably detachably connected.

For ease of distinction and description, the plate on the first anchor assembly 10 is described as a first plate 12, the sleeve on the first anchor assembly 10 is described as a first sleeve 11, the positioning nut 60 on one end of the first sleeve 11 is described as a first positioning nut, the stop on the other end of the first sleeve 11 is described as a first stop 13, the cavity 110 in the first sleeve 11 is described as a first cavity, the glue hole on the first sleeve 11 is described as a first glue hole 111, the vent hole on the first sleeve 11 is described as a first vent hole 112, and similarly, the plate on the second anchor assembly 20 is described as a second plate 22, the sleeve on the second anchor assembly 20 is described as a second sleeve 21, the positioning nut 60 on one end of the second sleeve 21 is described as a second positioning nut, the stop on the other end of the second sleeve 21 is described as a second stop 23, the cavity 110 in the second sleeve 21 is described as a second cavity, the glue filling hole on the second sleeve 21 is described as a second glue filling hole, and the vent hole on the second sleeve 21 is described as a second vent hole. As shown in fig. 1, the first plate 12 is provided with two rows of six first connection holes 100, three in each row, for connecting the first anchor assembly 10 with the concrete structure 90 to be reinforced, and the two rows of first connection holes 100 are distributed on the front and rear sides of the first sleeve 11; as shown in fig. 1, two rows of four first connection holes 100 are provided on the second plate 22 for connecting the second anchor assembly 20 with the concrete structure 90 to be reinforced, four rows of eight second connection holes 221 are provided between the four first connection holes 100 for connecting the second plate 22 with the stress bearing assembly, for the shapes of the first connection holes 100 and the second connection holes 221, both are circular connection holes and the aperture of the second connection holes 221 on the second plate 22 is smaller than that of the first connection holes 100 on the second plate 22, for the second connection holes 221, the second connection holes 221 have threads therein, that is, threaded holes; during installation, the high-strength bolt is installed at the position of the second connecting hole 221 and connected with the stress frame assembly, at the moment, the second anchor assembly 20 and the stress frame assembly on the second anchor assembly can synchronously move along the extension direction of the tensioning part 80, thrust is applied to the stress frame assembly through the tensioning part 80, so that the stress frame assembly drives the second anchor assembly 20 to move towards the direction far away from the first anchor assembly 10 so as to tension the carbon fiber bars 70 and apply prestress, then the reaction frame assembly 30, the stress frame assembly and the tensioning part 80 are disassembled, and finally cement mortar is sprayed or plastered outside the concrete groove 91 to complete the whole construction process. Optionally, the sleeve and the plate can be fixedly connected into a whole or can be in a detachable structure; when the prestress level target is high, the plate and the carbon fiber bar 70 can be fixed on the concrete structure 90 to be reinforced together by connecting the chemical bolt or the expansion bolt with the first connecting hole on the plate, and the prestress level is kept by matching with the sleeve; when the prestress level target is not too high, the abutting piece and the plate can be detached from the sleeve for recycling after the installation is finished (at the moment, the end of the sleeve, which is provided with the abutting piece, is a closed end, the end, which is provided with the positioning nut 60, namely the end connected with the carbon fiber bar 70 is an open end, and the sleeve and the plate are of a detachable structure), only the sleeve and the carbon fiber bar 70 are kept in the concrete groove 91, and the prestress level is kept by the bonding strength of the adhesive by injecting the adhesive such as epoxy resin into the concrete groove 91; in the two construction schemes, the plates and sleeves of the first anchor assembly 10 and the second anchor assembly 20 and the carbon fiber reinforced bars 70 are buried in the concrete structure 90 to be reinforced, and thus, no additional space is occupied.

As for the reaction frame member 30, as shown in fig. 1, the reaction frame member 30 is L-shaped, and includes a plate-shaped first reaction frame member 31 parallel to the extending direction of the tension member 80 and used for connecting with the concrete structure 90 to be reinforced, and a plate-shaped second reaction frame member 32 perpendicular to the extending direction of the tension member 80 and used for installing the tension member 80, two rows of six connection holes 311 for connecting with the concrete structure 90 to be reinforced are opened on the first reaction frame member 31, two reinforcing ribs with right-angled triangles in cross section are provided outside the two rows of the sixth connection holes 311, for convenience of description and distinction, the reinforcing ribs on the reaction frame member 30 are described as first reinforcing ribs 33, one of the first reinforcing ribs 33 is fixedly connected with the first reaction frame member 31, and the other right-angled side is fixedly connected with the second reaction frame member 32; a convex pillar (not shown) protruding outwards, that is, protruding towards the direction of the force-bearing frame assembly and extending along the extending direction of the tension member 80 is disposed on the end surface of the second reaction frame member 32, for convenience of description and distinction, the convex pillar on the reaction frame member 30 is described as a first convex pillar, and one end of the tension member 80 is mounted and limited on the first convex pillar.

As shown in fig. 1 and 5, the force-bearing frame assembly comprises an L-shaped force-bearing frame member 40 and a connecting frame assembly composed of two connecting frame members 50 which are of the same structure and are of an L shape, wherein the force-bearing frame member 40 comprises a plate-shaped first force-bearing frame member 41 which is parallel to the extension direction of the tensioning member 80 and is used for connecting with the connecting frame assembly and the second plate 22 of the second anchor assembly 20, and an upwardly extending plate-shaped second force-bearing frame member 42 which is perpendicular to the extension direction of the tensioning member 80, the force-bearing frame member 40 and the counter force frame member 30 are oppositely arranged at intervals, and an installation space for installing the tensioning member 80 is defined between the force-bearing frame member 40 and the counter force frame member; the first stress frame part 41 is provided with four rows of eight third connecting holes 411 which are used for being connected with the connecting frame part 50 and the second anchor assembly 20, a second reinforcing rib 43 with a right-angled triangle section is arranged between the two rows of third connecting holes 411 in the middle, one right-angled edge of the second reinforcing rib 43 is connected with the first stress frame part 41, and the other right-angled edge is connected with the second stress frame part 42; each connecting frame part 50 comprises a first connecting frame part 51 parallel to the plate of the second anchor assembly 20 and used for connecting with the stress frame part 40 and the plate of the second anchor assembly 20, and a second connecting frame part 52 vertical to the plate of the second anchor assembly 20 and used for connecting with the side wall of the concrete structure 90 to be reinforced, two rows of fourth connecting holes 511 used for correspondingly connecting with the second connecting holes 221 on the second plate 22 and the third connecting holes 411 on the stress frame part 40 are arranged on the first connecting frame part 51, two fourth connecting holes 511 on each first connecting frame part 51 extend along the extending direction vertical to the tensioning part 80, namely, as shown in fig. 5, two fourth connecting holes 511 are kidney-shaped holes and extend along the length direction of the first connecting frame part 51, namely along the front-back direction as shown in fig. 5; the fourth coupling hole 511 of the waist type is provided to allow the interval between the two coupling frame parts 50 to be adjusted according to the width of the concrete structure 90 to be reinforced; each second connecting frame part 52 is provided with a fifth connecting hole 521 extending along the extension direction of the tensioning part 80, and the fifth connecting hole 521 is a waist-shaped hole; a convex pillar (not shown) protruding outwards and extending, that is, extending in the extending direction of the tension member 80 is arranged on the end surface of the second force-bearing frame member 42 facing the reaction frame member 30, for convenience of description and distinction, the convex pillar on the force-bearing frame member 40 is described as a second convex pillar, the other end of the tension member 80 is mounted and limited on the second convex pillar, and the first convex pillar and the second convex pillar are coaxially arranged. When the reinforced concrete structure 90 is installed, the two connecting frame parts 50 are installed on the second plate 22 in a tandem and opposite mode to form a connecting frame assembly, then the stress frame part 40 is installed above the two connecting frame parts 50, high-strength bolts respectively penetrate through the third connecting hole 411, the fourth connecting hole 511 and the second connecting hole 221 so as to enable the stress frame part 40, the connecting frame part 50 and the second anchor assembly 20 to be connected together, and the distance between the two connecting frame parts 50 is adjusted according to the width of the concrete structure 90 to be reinforced so as to enable the second connecting frame part 52 of the two connecting frame parts 50 to be attached to the two outer wall surfaces of the concrete structure 90 to be reinforced; connecting the chemical bolts or expansion bolts through the fifth connecting holes 521 and the side surface of the concrete structure 90 to be reinforced but not completely locking the chemical bolts or expansion bolts so as to be convenient for tensioning, after the chemical bolts or expansion bolts are tensioned in place, penetrating the chemical bolts or expansion bolts through the first connecting holes 100 of the second plate 22 to lock the second anchor assembly 20 and the concrete structure 90 to be reinforced, and removing the reaction frame component 30, the stress frame component and the tensioning component 80; and selectively removing the first abutting piece 13 on the first anchor assembly 10, the second abutting piece 23 on the first plate 12 and the second abutting piece 22 on the second anchor assembly 20 according to the prestress level target, and only keeping the first sleeve 11, the first positioning nut, the carbon fiber rib 70, the second positioning nut and the second sleeve 21 in the concrete groove 91.

The tensioning member 80 is a jack, which is common in the prior art, and the axial direction of the jack is parallel to but not coaxial with the axial direction of the carbon fiber bar 70, specifically, the carbon fiber bar 70 is embedded in the concrete groove 91, and the jack is located outside the concrete groove 91.

The concrete groove 91 of the concrete structure 90 to be reinforced is configured to match the shapes of the first plate 12 of the first anchor assembly 10, the carbon fiber reinforced bar 70, and the second plate 22 of the second anchor assembly 20, as shown in fig. 7, and will not be described or limited in detail.

The method comprises the following specific steps: firstly, horizontally inserting one end of a carbon fiber bar 70 into a first positioning nut and a first sleeve 11 through a concrete groove, connecting and fixing the first positioning nut and the first sleeve 11 through threads, then inserting the first sleeve 11 into a first plate 12, fastening a first stopper 13 at the other end of the first sleeve 11 to form a first anchor assembly 10, and then injecting cementing agents such as epoxy resin and the like into a first glue filling hole 111 to fix the carbon fiber bar 70 into the first sleeve 11; meanwhile, the other end of the carbon fiber bar 70 is horizontally inserted into the second positioning nut and the second sleeve 21, the second positioning nut and the second sleeve 21 are fixedly connected in a threaded manner, the second sleeve 21 is inserted into the second plate 22, the second stopper 23 is fastened at the other end of the second sleeve to form a second anchor assembly 20, and then cementing agents such as epoxy resin and the like are injected into the second glue filling hole 211 to fix the other end of the carbon fiber bar 70 into the second sleeve 21; burying a first anchor assembly 10, a carbon fiber bar 70 and a second anchor assembly 20 which are fixedly connected into a whole in a concrete groove 91; the first connection hole 100 of the first plate 12 of the first anchor assembly 10 is locked and fixed on the concrete structure 90 to be reinforced by an expansion bolt or a chemical bolt, the sixth connection hole 311 of the reaction frame member 30 is locked and fixed on the concrete structure 90 to be reinforced by an expansion bolt or a chemical bolt, the third connection hole 411 of the first stress frame member 41 of the stress frame member is fixedly connected with the fourth connection hole 511 of the first connection frame member 51 and the second connection hole 221 of the second plate 22 of the second anchor assembly 20 by a high-strength bolt, and the fifth connection hole 521 of the second connection frame member 52 is incompletely locked on the side wall of the concrete structure 90 to be reinforced by an expansion bolt or a chemical bolt; installing and limiting the tensioning part 80 on the first convex column of the reaction frame part 30 and the second convex column of the stress frame part 40, starting the tensioning part 80 to apply force and tension to the stress frame part, enabling the stress frame part and the second anchor assembly 20 to drive the carbon fiber reinforcement 70 to move along the extending direction of the fifth connecting hole 521 towards the direction far away from the reaction frame part 30 or the first anchor assembly 10 together to enlarge the space between the reaction frame part 30 and the stress frame part, thereby applying prestress to the carbon fiber reinforcement 70 until the preset prestress reaches the preset prestress, namely the displacement corresponding to the preset prestress level, at the moment, disassembling the reaction frame part 30, the stress frame part and the tensioning part 80, finally spraying cement mortar or plastering outside the concrete groove 91 to complete construction, certainly, selectively disassembling the first plate 12 of the first anchor assembly 10 according to the target prestress level, First abutment member 13 and second plate member 22, second abutment member 23 of second anchor assembly 20. The utility model discloses a prestressing force reinforcing apparatus can carry out carbon fiber bar 70's both ends level simultaneously and fix on first ground tackle subassembly 10 and second ground tackle subassembly 20, shortens construction cycle greatly.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (9)

1. A pre-stressed reinforcement device, comprising:

a first anchor assembly (10) for fixing to one end of a concrete groove (91) previously provided on a concrete structure (90) to be reinforced;

a second anchor assembly (20) for disposition opposite the first anchor assembly (10) at the other end of the concrete trough (91);

the carbon fiber bar (70) is suitable for being embedded in the concrete groove (91), one end of the carbon fiber bar is fixed on the first anchor assembly (10), and the other end of the carbon fiber bar is fixed on the second anchor assembly (20);

a reaction frame member (30) for mounting on the concrete structure (90) to be reinforced and outside the concrete trough (91);

a stress frame assembly mounted on the second anchor assembly (20) and comprising a stress frame member (40) arranged opposite to the reaction frame member (30) at an interval and a connecting frame assembly slidably connected with the concrete structure (90) to be reinforced, wherein the stress frame member (40) can directly bear force and transmit the force to the connecting frame assembly and the second anchor assembly (20) so as to apply prestress to the carbon fiber rib (70);

a tension member (80) having both ends respectively attached to the force-receiving frame member and the reaction frame member (30) and applying a pushing force to the force-receiving frame member (40) away from the reaction frame member (30); the stretching direction of the stretching component (80) is parallel to the axial direction of the carbon fiber rib (70).

2. A prestressed reinforcement device according to claim 1, characterized in that said first anchor assembly (10) and said second anchor assembly (20) each comprise:

the sleeve is matched with the concrete groove (91) and extends along the extension direction of the carbon fiber bar (70), a cavity (110) is formed in the sleeve, at least one end of the sleeve, which is connected with the carbon fiber bar (70), is an open end, the open end is connected with a positioning nut (60), and a positioning hole for the carbon fiber bar (70) to pass through is formed in the positioning nut (60);

two ends of the carbon fiber bar (70) respectively penetrate through the positioning hole and the opening end corresponding to the anchor assembly and are fixed in the corresponding cavity (110).

3. A prestressed reinforcement device according to claim 2, characterized in that said first anchor assembly (10) and said second anchor assembly (20) each further comprise:

the plate is connected with the sleeve, and the other end of the sleeve, which is opposite to the end connected with the positioning nut (60), is at least partially inserted into the plate; and

and the abutting piece is in threaded connection with the other end and abuts against the plate when the tensioning component (80) applies thrust to the force bearing frame component.

4. The prestressed reinforcement device of claim 3, wherein said stop is an internally threaded nut closed at one end.

5. The pre-stressed reinforcement device of claim 2 or 3, wherein the side wall of the sleeve is provided with at least a glue filling hole and a vent hole which are communicated with the cavity.

6. The pre-stressed reinforcement apparatus of claim 1, wherein said connector bracket assembly comprises:

two connecting frame members (50) relatively movably arranged on both sides of the concrete trough (91) for connecting the force-bearing frame member (40) and the second anchorage assembly (20);

one end of any one of the connecting frame parts (50) is connected with the mutually facing end surfaces of the stress frame part (40) and the second anchorage assembly (20), and the other end is connected with the side wall of the concrete structure (90) to be reinforced in a sliding way.

7. A prestressed reinforcement according to claim 6, characterized in that any one of said connecting frame members (50) is L-shaped and comprises a first connecting frame member (51) parallel to the plates of said second anchorage assembly (20) and a second connecting frame member (52) perpendicular to the plates of said second anchorage assembly (20);

the first connecting frame part (51) is provided with a fourth connecting hole (511) extending along the direction perpendicular to the extending direction of the tensioning part (80), and the two connecting frame parts (50) can slide along the extending direction of the fourth connecting hole (511);

and a fifth connecting hole (521) extending along the extension direction of the tensioning part (80) is formed in the second connecting frame part (52), and the second anchor assembly (20) and the stress frame assembly can slide along the fifth connecting hole (521) when being stressed by thrust.

8. A prestressed reinforcement according to claim 7, characterized in that said stress carrier part (40) and said reaction carrier part (30) are also L-shaped and are provided with reinforcing ribs.

9. The prestress reinforcement device according to claim 6, wherein the tension member (80) is a jack, and the end surfaces of the reaction frame member (30) and the stress frame member (40) facing each other are provided with a convex pillar coaxial with the extension direction of the tension member (80), and both ends of the tension member (80) are respectively limited on the convex pillar.

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