CN111455878B - Bridge carbon fiber reinforced structure and construction method thereof - Google Patents
Bridge carbon fiber reinforced structure and construction method thereof Download PDFInfo
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- CN111455878B CN111455878B CN202010295874.XA CN202010295874A CN111455878B CN 111455878 B CN111455878 B CN 111455878B CN 202010295874 A CN202010295874 A CN 202010295874A CN 111455878 B CN111455878 B CN 111455878B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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Abstract
The invention relates to a bridge carbon fiber reinforced structure and a construction method thereof, and the bridge carbon fiber reinforced structure comprises a carbon fiber plate, an anchoring mechanism, a tensioning mechanism and a plurality of pressing sheets, wherein the carbon fiber plate is bonded on the bottom surface of a bridge; the safety cover includes a plurality of protection casings, and a plurality of protection casings end to end form the safety cover, and the protection casing also passes through connecting bolt to be connected on the bridge, is equipped with the connecting piece between two adjacent protection casings, and two adjacent protection casings pass through the connecting piece and can dismantle the connection. It protects the carbon fiber board in the safety cover, and is connected closely between safety cover and the bridge, and the protection effect that plays carbon fiber board is better.
Description
Technical Field
The invention relates to the technical field of bridge reinforcing construction, in particular to a bridge carbon fiber reinforcing structure and a construction method thereof.
Background
The bridge reinforcement generally refers to restoring or improving the bearing capacity of the existing bridge through the reinforcement of the member and the improvement of the structural performance so as to prolong the service life of the bridge and meet the requirements of modern transportation. The reinforcing and reforming of the bridge at home and abroad mainly comprises the steps of reinforcing weak components, increasing auxiliary components, changing a structural system, lightening dead load, reinforcing abutments and foundations and the like.
At present, patent document No. CN208395696U also discloses a prestressed carbon fiber plate reinforcing structure for a bridge, which includes a pair of anchor assemblies, a carbon fiber plate is connected between the anchor assemblies, a tensioning mechanism for making the carbon fiber plate form prestress is arranged on the anchor assemblies, and an extension protective sleeve for guiding and protecting the carbon fiber plate is arranged between the anchor assemblies. The extension protective sheath includes a plurality of protective sleeves that cup joint together, protective sleeve's cross-section is the arc, protective sleeve includes nose end and tail end, be equipped with the elasticity fixture block on the outer wall of nose end, be equipped with on the inner wall of tail end with elasticity fixture block complex draw-in groove.
Among the above-mentioned prior art scheme, use a plurality of protective case that cup joints together to form the extension protective sheath, establish the carbon fiber board cover in the extension protective sheath, play the guard action to the carbon fiber board. Then, because the general length of carbon fiber plate is longer, then the length of extension protective sheath is also longer, and the extension protective sheath is connected with two anchor subassemblies only through its both ends, does not have the relation of connection between other positions and the bridge, and the middle part of extension protective sheath can squint downwards under the action of gravity to expose carbon fiber plate, and can cause wearing and tearing to the junction of two adjacent protective sheaths, the cracked phenomenon of extension protective sheath appears easily, and is relatively poor to carbon fiber plate's protection effect.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a bridge carbon fiber reinforcing structure, which protects a carbon fiber plate in a protective cover, and the protective cover is tightly connected with a bridge, so that the carbon fiber plate is well protected.
The above object of the present invention is achieved by the following technical solutions:
a bridge carbon fiber reinforced structure and a construction method thereof comprise a carbon fiber plate adhered to the bottom surface of a bridge, an anchoring mechanism arranged at one end of the carbon fiber plate, a tensioning mechanism arranged at one end of the carbon fiber plate far away from the anchoring mechanism, and a plurality of pressing sheets arranged on the carbon fiber plate, wherein the pressing sheets are connected to the bridge through connecting bolts and connecting nuts and extrude the carbon fiber plate to one side of the bridge, a protective cover is arranged between the anchoring mechanism and the tensioning mechanism, and the carbon fiber plate is positioned in the protective cover;
the safety cover includes a plurality of protection casings, and a plurality of protection casings end to end form the safety cover, and the protection casing also passes through connecting bolt to be connected on the bridge, is equipped with the connecting piece between two adjacent protection casings, and two adjacent protection casings pass through the connecting piece and can dismantle the connection.
Through adopting above-mentioned technical scheme, anchor mechanism bonds the carbon fiber board to the bridge bottom surface with the one end and the bridge fixed connection of carbon fiber board, after the taut carbon fiber board of tensioning mechanism of reuse, plays the reinforcing effect to the bridge through the carbon fiber board, improves the resistance to compression and the shock resistance of bridge. And use a plurality of protection casings end to form the safety cover, play the guard action to the carbon fiber board, the protection casing passes through connecting bolt and installs on the bridge, has guaranteed the stability of being connected between safety cover and the bridge promptly, need not bore too many holes on the bridge again, and the installation is simple convenient.
The present invention in a preferred example may be further configured to: the protective shell comprises a web plate arranged below the carbon fiber plate, two side plates fixedly arranged at two ends of the web plate along the width direction of the carbon fiber plate respectively, and wing plates fixedly arranged at one ends of the side plates close to the bridge;
the carbon fiber plate is located in a space between the web plate and the two side plates, the wing plate is provided with a connecting hole, the connecting bolt penetrates through the connecting hole and is in threaded connection with a fastening nut, and the fastening nut extrudes the wing plate to one side of the connecting nut.
Through adopting above-mentioned technical scheme, web and two curb plates form the protection space, cover the carbon fiber board in the protection space to play good protection effect to the carbon fiber board, and pterygoid lamina and bridge laminating reuse fastening nut with the pterygoid lamina fixed to connecting bolt, the connected mode is simple and stable.
The present invention in a preferred example may be further configured to: offer the groove of stepping down with preforming and coupling nut looks adaptation on the pterygoid lamina, preforming and coupling nut all are located the groove of stepping down.
Through adopting above-mentioned technical scheme, make the both sides of pterygoid lamina closely laminate with the bridge bottom surface, improve the stability of being connected between protection casing and the bridge.
The present invention in a preferred example may be further configured to: the connecting piece comprises a bottom plate fixedly arranged at one end of the web close to the anchoring component and a vertical plate fixedly arranged at one end of the side plate close to the anchoring mechanism;
the bottom plate and the two vertical plates extend to the outer side of the protection shell towards one side of the anchoring mechanism and are inserted into the other protection shell to be detachably connected with the protection shell.
By adopting the technical scheme, after the connecting piece is inserted into another protective shell, the bottom plate is contacted with the web plate of the bottom plate, and the vertical plate is contacted with the side plate of the bottom plate, so that the two adjacent protective shells are connected together, the structure is simple and compact, and the manufacturing cost is low.
The present invention in a preferred example may be further configured to: a first threaded hole is formed in one end, located on the outer side of the protective shell, of the bottom plate, and a second threaded hole is formed in one end, located on the outer side of the protective shell, of the vertical plate;
a first bolt hole is formed in one end, far away from the bottom plate, of the web plate, and a second bolt hole is formed in one end, far away from the vertical plate, of the side plate;
after the connecting piece is inserted into another protective shell, the first bolt hole is aligned with the first threaded hole, the second bolt hole is aligned with the second threaded hole, a first fixing bolt is arranged in the first bolt hole, the first fixing bolt penetrates through the first bolt hole to be connected with the first threaded hole, a second fixing bolt is arranged in the second bolt hole, and the second fixing bolt penetrates through the second bolt hole to be connected with the second threaded hole.
Through adopting above-mentioned technical scheme, use the cooperation of first fixing bolt and first screw hole, second fixing bolt and second screw hole, make the connection between two adjacent protection casings closely stable, and the installation is simple and convenient.
The present invention in a preferred example may be further configured to: the connecting hole, the first bolt hole and the second bolt hole are all arranged to be waist-shaped holes arranged along the length direction of the carbon fiber plate.
Through adopting above-mentioned technical scheme, the connecting hole sets up to waist type hole messenger protection casing can follow the length direction removal of carbon fiber plate to be convenient for adjust the position between connecting piece and another protection casing, and the people bolt hole of first bolt hole and set up to waist type hole equally, be convenient for first bolt hole and first screw hole, second bolt hole and second screw hole align.
The present invention in a preferred example may be further configured to: the connecting bolt is set to be a high-strength chemical anchor bolt or a high-strength expansion bolt.
Through adopting above-mentioned technical scheme, be connected closely between high strong chemical anchor bolt or the expansion bolts that excels in and the bridge, be difficult for droing, can guarantee the stability that preforming and safety cover are connected.
The invention also aims to provide a bridge carbon fiber reinforcing construction method which has the advantages of convenience in construction, good bridge reinforcing effect and long service life of the carbon fiber plate.
The above object of the present invention is achieved by the following technical solutions:
a bridge carbon fiber reinforcement construction method comprises the bridge reinforcement structure, and comprises the following steps:
A. measuring the length of the required carbon fiber plate at the position of the bottom surface of the bridge needing to be reinforced, marking the positions of the carbon fiber plate, the anchoring mechanism, the tensioning mechanism and the connecting bolts, polishing and removing ash at the bonding position of the carbon fiber plate bonded on the bridge, and drilling holes used by the connecting bolts;
B. installing an anchoring mechanism and a tensioning mechanism at the marked positions, implanting connecting bolts into the drilled holes, and connecting the carbon plate between the anchoring mechanism and the tensioning mechanism;
C. pre-tensioning the carbon fiber plate, primarily tensioning the carbon fiber plate through a tensioning mechanism to enable the carbon fiber plate to be attached to the bottom surface of the bridge after being tensioned, recording the tensioning force and the stretching length of the carbon fiber plate, and then loosening the carbon fiber plate;
D. uniformly coating primer at the position where the carbon fiber plate is bonded on the bottom surface of the bridge, uniformly coating carbon plate glue on the side surface, close to the bridge, of the carbon fiber plate, then tensioning the carbon fiber plate again according to the tension in pretensioning, and bonding the carbon fiber plate to the bottom surface of the bridge;
E. carry out surface protection to the carbon fiber board, pass through connecting bolt earlier a plurality of preforming and install on the bridge, make the preforming extrude the carbon fiber board to bridge one side, evenly paint one deck anticorrosive paint to the surface of carbon fiber board, anchor mechanism and tensioning mechanism again, install the safety cover on the bridge at last, make the carbon fiber board be located the safety cover.
Through adopting above-mentioned technical scheme, construct the carbon fiber reinforcement mechanism of bridge, the work progress is simple and convenient to make the bonding between carbon fiber board and the bridge closely laminate, it is better to the reinforcement effect of bridge, and under the effect of protective cover, play the guard action to the carbon fiber board, reduce the carbon fiber board and receive external phenomenon of destroying or corroding, improve the life of carbon fiber board.
The present invention in a preferred example may be further configured to: when the protective cover is installed, the protective shells are installed one by one from one side of the tensioning mechanism.
By adopting the technical scheme, when the next protective shell is installed, the next protective shell is directly sleeved on the connecting piece, so that the matching of the connecting piece between the two adjacent protective shells is facilitated.
The present invention in a preferred example may be further configured to: when the protective cover is installed, after all the protective shells are installed in sequence, the adjacent two protective shells are connected through the connecting piece, the first fixing bolt and the second fixing bolt.
Through adopting above-mentioned technical scheme, after having installed all protection casings, can observe first bolt hole and first screw hole, second bolt hole and second screw hole and whether align to make the protection casing adjust at connecting bolt's position, thereby be convenient for adjust the position between two adjacent protection casings, make the connection between the protection casing more convenient.
In summary, the invention includes at least one of the following beneficial technical effects:
1. a protective cover is arranged between the anchoring mechanism and the tensioning mechanism, the protective cover plays a role in protecting the carbon fiber plate, the connection strength between the protective cover and the bridge is high, and the protective effect on the carbon fiber plate is good;
2. the protective cover and the plurality of pressing sheets are connected to the bridge through the connecting bolts, so that the connecting strength between the protective cover and the bridge can be ensured, excessive holes cannot be drilled in the bridge, and the reinforcing effect on the bridge is ensured;
3. when the protective cover is installed, the protective shells are installed one by one from one side of the tensioning mechanism, and after all the protective shells are installed on a bridge, the two adjacent protective shells are connected together to form the protective cover, so that the process of installing the protective cover is simple and convenient, and the two adjacent protective shells are convenient to cooperate.
Drawings
Fig. 1 is a schematic structural view of a bridge carbon fiber reinforcing structure in the present embodiment;
FIG. 2 is an exploded view showing the position of a carbon fiber plate and a preform;
FIG. 3 is a partial exploded view showing the connection of the protective housing to the bridge;
fig. 4 is a partial exploded view showing the composition of the protective cover.
In the figure, 1, a carbon fiber plate; 2. an anchoring mechanism; 3. a tensioning mechanism; 4. tabletting; 5. a connecting bolt; 51. a connecting nut; 6. a protective cover; 7. a protective housing; 71. a web; 711. a first bolt hole; 72. a side plate; 721. a second bolt hole; 73. a wing plate; 731. a yielding groove; 732. connecting holes; 74. fastening a nut; 8. a connecting member; 81. a base plate; 82. a vertical plate; 83. a first threaded hole; 84. a second threaded hole; 85. a first fixing bolt; 86. and a second fixing bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the bridge carbon fiber reinforcing structure disclosed by the invention comprises a carbon fiber plate 1, wherein the carbon fiber plate 1 is arranged along the length direction of a bridge, one end of the carbon fiber plate 1 along the length direction is provided with an anchoring mechanism 2, the other end of the carbon fiber plate 1 is provided with a tensioning mechanism 3, the anchoring mechanism 2 is used for fixedly connecting one end of the carbon fiber plate 1 with the bridge, the tensioning mechanism 3 is used for tensioning the other end of the carbon fiber plate 1, the carbon fiber plate 1 is tensioned, and the tensioned carbon fiber plate 1 is bonded on the bridge.
Referring to fig. 2, a plurality of pressing sheets 4 are further arranged on the carbon fiber plate 1, the plurality of pressing sheets 4 are located between the anchoring mechanism 2 and the tensioning mechanism 3, and the plurality of pressing sheets 4 are arranged uniformly and at intervals along the length direction of the carbon fiber plate 1. The pressing sheet 4 is arranged along the width direction of the carbon fiber plate 1, and the two ends of the pressing sheet 4 along the width direction of the carbon fiber plate 1 are respectively installed on the bottom surface of the bridge through the connecting bolts 5 and the connecting nuts 51, and the carbon fiber plate 1 is extruded to one side of the bridge. Wherein, connecting bolt 5 adopts high-strength chemical anchor bolt, and its and the bridge between joint strength is higher, connects stably.
Referring to fig. 1, a protective cover 6 is arranged between the anchoring mechanism 2 and the tensioning mechanism 3, and the carbon fiber plate 1 is located in the protective cover 6, so that the protective cover 6 protects the carbon fiber plate 1. Referring to fig. 3 and 4, the protective cover 6 includes a plurality of protective shells 7, the plurality of protective shells 7 are uniformly distributed along the length direction of the carbon fiber plate 1, and the plurality of protective shells 7 correspond to the plurality of pressing sheets 4 one to one. A connecting piece 8 is arranged between two adjacent protective shells 7, and the two adjacent protective shells 7 are connected together through the connecting piece 8, so that the protective covers 6 are formed by connecting the protective shells 7 end to end.
Referring to fig. 3 and 4, the protective shell 7 is composed of a web 71, two side plates 72, and two flanges 73, the web 71 is disposed along the length direction of the carbon fiber plate 1, and the web 71 is parallel to the carbon fiber plate 1. The side plates 72 are perpendicular to the web plate 71, the two side plates 72 are fixedly arranged at two ends of the web plate 71 in the width direction of the carbon fiber plate 1 respectively, the two wing plates 73 are in one-to-one correspondence with the two side plates 72, the wing plates 73 are parallel to the web plate 71, and one ends, far away from the web plate 71, of the wing plates 73 and one ends, far away from the web plate 71, of the side plates 72 are fixedly connected.
Referring to fig. 3 and 4, the wing plate 73 abuts against the top surface of the bridge, the middle portion of the wing plate 73 in the length direction of the carbon fiber plate 1 is recessed downwards to form a yielding groove 731 matched with the pressing sheet 4 and the connecting nut 51, one end of the pressing sheet 4 and the connecting nut 51 are located in the corresponding yielding groove 731, the bottom wall of the yielding groove 731 abuts against the connecting nut 51, a connecting hole 732 matched with the connecting bolt 5 is formed in the bottom surface of the yielding groove 731, the connecting bolt 5 penetrates through the connecting hole 732 and is in threaded connection with a fastening nut 74, the fastening nut 74 presses the wing plate 73 to one side of the connecting nut 51, so that the wing plate 73 is connected with the bridge, and the carbon fiber plate 1 is located in a space between the web 71 and the two side plates 72.
Referring to fig. 4, the connecting member 8 includes a bottom plate 81, the bottom plate 81 is parallel to the web 71, the bottom plate 81 is fixedly disposed on a top surface of the web 71 near one end of the anchoring assembly, and two ends of the bottom plate 81 along the width direction of the carbon fiber plate 1 are respectively fixedly connected to the two side plates 72. The side of the side plate 72 close to the bottom plate 81 is fixedly provided with a vertical plate 82, the vertical plate 82 is parallel to the side plate 72, the vertical plate 82 is positioned at one end of the side plate 72 close to the anchoring component, and the bottom surface of the vertical plate 82 is fixedly connected with the bottom plate 81.
Referring to fig. 4, the bottom plate 81 and the two risers 82 both extend to the outside of the protective casing 7 to one side of the anchoring mechanism 2, two first threaded holes 83 are opened at one end of the bottom plate 81 located at the outside of the protective casing 7, and two second threaded holes 84 are opened at one end of the risers 82 located at the outside of the protective casing 7. Two first bolt holes 711 are opened at one end of the web 71 away from the bottom plate 81, and two second bolt holes 721 are opened at one end of the side plate 72 away from the vertical plate 82. The first bolt hole 711 and the first screw hole 83, and the second bolt hole 721 and the second screw hole 84 are in one-to-one correspondence.
Referring to fig. 4, between two adjacent protective cases 7, the bottom plate 81 and two vertical plates 82 of one protective case 7 are inserted into the other protective case, such that the first threaded holes 83 of the bottom plate 81 are aligned with the first bolt holes 711 of the web 71 of the other protective case 7, the second threaded holes 84 of the vertical plates 82 are aligned with the second bolt holes 721 of the side plate 72 of the other protective case 7, and the first fixing bolts 85 are connected to the first threaded holes 83 through the first bolt holes 711, and the second fixing bolts 86 are connected to the second threaded holes 84 through the second bolt holes 721. Thereby connecting two adjacent protective casings 7 together so that a plurality of protective casings 7 are joined end to form the protective cover 6.
Referring to fig. 4, the connection hole 732, the first bolt hole 711, and the second threaded hole 84 are all formed as a kidney-shaped hole along the length direction of the carbon fiber plate 1, so that the position between the protection shell 7 and the connection bolt 5 can be adjusted, and the two adjacent protection shells 7 can be matched.
According to the bridge carbon fiber reinforced structure, the construction method for reinforcing the bridge carbon fiber disclosed by the invention comprises the following construction steps:
A. preparation for construction, marking and perforating
Measuring the length of the required carbon fiber plate 1 at the reinforced position of the bridge, and marking the positions of the carbon fiber plate 1, the anchoring mechanism 2, the tensioning mechanism 3 and the plurality of connecting bolts 5; polishing and ash removal are carried out on the installation position of the carbon fiber plate 1, and a plurality of holes used for connecting the connecting bolts 5 and the bridge are drilled;
B. preliminary installation
Installing the anchoring mechanism 2 and the tensioning mechanism 3 at corresponding positions, implanting a connecting bolt 5 into the drilled hole, and finally respectively connecting two ends of the carbon fiber plate 1 to the anchoring mechanism 2 and the tensioning mechanism 3;
C. pretension
Tensioning the carbon fiber plate 1 for the first time by using a tensioning mechanism 3, observing the state and change of the carbon fiber plate 1 in the tensioning process, recording the tensioning force and the stretching length required by the carbon fiber plate 1 finally, and then loosening the carbon fiber plate 1 to enable a gap to exist between the carbon fiber plate 1 and the bridge;
D. bonded carbon fiber sheet 1
Uniformly coating a layer of primer on the ground position of the bottom surface of the bridge, uniformly coating carbon plate glue on the side surface, close to the bridge, of the carbon fiber plate 1, tensioning the carbon fiber plate 1 again by using a tensioning mechanism 3 after the primer and the carbon plate glue are coated, enabling the carbon fiber plate 1 to be close to the bridge, and pressing the carbon plate gluing primer tightly, so that the carbon fiber plate 1 is adhered to the bridge under the action of the primer and the carbon plate glue;
when the carbon fiber plate 1 is tensioned, three tensioning processes are divided according to tensioning force recorded by pre-tensioning, wherein the tensioning force is gradually increased each time, and the next side is tensioned after the tensioning process is kept for 5 minutes each time;
E. surface protection
Installing a plurality of pressing sheets 4 on the bottom surface of the bridge through connecting bolts 5, and enabling the pressing sheets 4 to extrude the carbon fiber plate 1 towards one side of the bridge; then, uniformly coating the surfaces of the carbon fiber plate 1, the anchoring mechanism 2 and the tensioning mechanism 3 with an anticorrosive coating, after the anticorrosive coating is dried, installing a protective cover 6, and sleeving the carbon fiber plate 1 in the protective cover 6;
when the protective cover 6 is installed, preparing a corresponding number of protective shells 7 according to the number of the pressing sheets 4, corresponding the protective shells 7 to the plurality of pressing sheets 4 one by one, and installing the protective shells 7 one by one from one side of the tensioning mechanism 3; when the protective shell 7 is installed, the grooves of the wing plates 73 on the two sides of the protective shell 7 correspond to the pressing plates 4 and the connecting nuts 51, the connecting bolts 5 penetrate through the connecting holes 732 in the wing plates 73, the wing plates 73 are in contact with the bottom surface of the bridge, the connecting nuts 51 are in contact with the bottom surface of the abdicating grooves 731, and finally the fastening nuts 74 are connected to the connecting bolts 5, so that the fastening bolts press the wing plates 73, and the protective shell 7 is connected to the bridge. When the next protective shell 7 is installed, one end of the next protective shell 7 is directly sleeved on the connecting piece 8, and the first threaded hole 83 is aligned with the first bolt hole 711 and the second threaded hole 84 is aligned with the second bolt hole 721;
after all the protection shells 7 are installed, the two adjacent protection shells 7 are connected by using the first fixing bolt 85 and the second fixing bolt 86, all the protection shells 7 are spliced into the protection cover 6, and the installation work of the bridge reinforcing structure is completed.
By using the bridge carbon fiber reinforcing mechanism and the construction method for reinforcing the bridge, the construction process is simple and convenient, and the processes of installing the carbon fiber plate 1 and tensioning the carbon fiber plate 1 are simple and convenient. Wherein, bond carbon fiber plate 1 time-sharing for cubic stretch-draw carbon fiber plate 1, be convenient for adjust the tension according to carbon fiber plate 1's change in the tension process to make primer and carbon plate adhesive bond abundant, it is inseparabler to be connected between carbon fiber plate 1 and the bridge. And secondly, the surfaces of the carbon fiber plate 1, the anchoring mechanism 2 and the tensioning mechanism 3 are coated with anticorrosive paint, so that the carbon fiber plate 1, the anchoring mechanism 2 and the tensioning mechanism 3 can be protected from being corroded by air and the like. In addition, in the process of installing the protective cover 6, the protective shells 7 are installed one by one from one side of the tensioning mechanism 3, the matching of the connecting pieces 8 between the two adjacent protective shells 7 is facilitated, and the protective shells 7 and the pressing pieces 4 are connected to the bridge through the same group of connecting bolts 5, so that the connecting strength between the protective shells 7 and the bridge is ensured, too many holes cannot be drilled in the bottom surface of the bridge, and a good protective effect can be achieved on the carbon fiber plate 1.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The utility model provides a bridge carbon fiber reinforced structure, is including bonding carbon fiber plate (1) in the bridge bottom surface, setting up anchor mechanism (2) in carbon fiber plate (1) one end, setting up stretch-draw mechanism (3) of keeping away from anchor mechanism (2) one end in carbon fiber plate (1) and set up a plurality of preforming (4) on carbon fiber plate (1), preforming (4) are connected on the bridge and are extrudeed carbon fiber plate (1) to bridge one side through connecting bolt (5) and coupling nut (51), its characterized in that: a protective cover (6) is arranged between the anchoring mechanism (2) and the tensioning mechanism (3), and the carbon fiber plate (1) is positioned in the protective cover (6);
the protective cover (6) comprises a plurality of protective shells (7), the protective covers (6) are formed by connecting the protective shells (7) end to end, the protective shells (7) are also connected to the bridge through connecting bolts (5), a connecting piece (8) is arranged between every two adjacent protective shells (7), and the two adjacent protective shells (7) are detachably connected through the connecting piece (8).
2. The bridge carbon fiber reinforced structure of claim 1, wherein: the protective shell (7) comprises a web plate (71) arranged below the carbon fiber plate (1), two side plates (72) fixedly arranged at two ends of the web plate (71) along the width direction of the carbon fiber plate (1) respectively, and wing plates (73) fixedly arranged at one ends of the side plates (72) close to the bridge;
the carbon fiber plate (1) is located in a space between the web plate (71) and the two side plates (72), the wing plate (73) is provided with a connecting hole (732), the connecting bolt (5) penetrates through the connecting hole (732) and is in threaded connection with a fastening nut (74), and the fastening nut (74) extrudes the wing plate (73) to one side of the connecting nut (51).
3. The bridge carbon fiber reinforced structure of claim 2, wherein: offer on pterygoid lamina (73) with preforming (4) and coupling nut (51) looks adaptation abdicate groove (731), preforming (4) and coupling nut (51) all are located abdicate groove (731).
4. The bridge carbon fiber reinforced structure of claim 2, wherein: the connecting piece (8) comprises a bottom plate (81) fixedly arranged at one end of the web plate (71) close to the anchoring component and a vertical plate (82) fixedly arranged at one end of the side plate (72) close to the anchoring mechanism (2);
the bottom plate (81) and the two vertical plates (82) extend to the outer side of the protection shell (7) towards one side of the anchoring mechanism (2) and are inserted into the other protection shell (7) to be detachably connected with the protection shell.
5. The carbon fiber reinforced bridge structure of claim 4, wherein: a first threaded hole (83) is formed in one end, located on the outer side of the protective shell (7), of the bottom plate (81), and a second threaded hole (84) is formed in one end, located on the outer side of the protective shell (7), of the vertical plate (82);
a first bolt hole (711) is formed in one end, far away from the bottom plate (81), of the web plate (71), and a second bolt hole (721) is formed in one end, far away from the vertical plate (82), of the side plate (72);
after the connecting piece (8) is inserted into another protective shell (7), the first bolt hole (711) is aligned with the first threaded hole (83), the second bolt hole (721) is aligned with the second threaded hole (84), a first fixing bolt (85) is arranged in the first bolt hole (711), the first fixing bolt (85) penetrates through the first bolt hole (711) to be connected with the first threaded hole (83), a second fixing bolt (86) is arranged in the second bolt hole (721), and the second fixing bolt (86) penetrates through the second bolt hole (721) to be connected with the second threaded hole (84).
6. The carbon fiber reinforced structure for a bridge according to claim 5, wherein: the connecting hole (732), the first bolt hole (711) and the second bolt hole (721) are all arranged to be waist-shaped holes arranged along the length direction of the carbon fiber plate (1).
7. The carbon fiber reinforced structure for bridges according to any one of claims 1 to 6, wherein: the connecting bolt (5) is set to be a high-strength chemical anchor bolt or a high-strength expansion bolt.
8. A bridge carbon fiber reinforcement construction method, characterized in that the bridge carbon fiber reinforcement structure of any one of the claims 1-7 is used, comprising the following steps:
A. measuring the length of the required carbon fiber plate (1) at the position, needing to be reinforced, of the bottom surface of the bridge, marking the positions of the carbon fiber plate (1), the anchoring mechanism (2), the tensioning mechanism (3) and the connecting bolts (5), polishing and removing ash at the bonding position, bonded with the carbon fiber plate (1), of the bridge, and drilling holes used by the connecting bolts (5);
B. installing an anchoring mechanism (2) and a tensioning mechanism (3) at the marked position, implanting a connecting bolt (5) into the drilled hole, and connecting the carbon fiber plate (1) between the anchoring mechanism (2) and the tensioning mechanism (3);
C. the method comprises the following steps of pre-tensioning the carbon fiber plate (1), primarily tensioning the carbon fiber plate (1) through a tensioning mechanism (3), attaching the carbon fiber plate (1) to the bottom surface of a bridge after tensioning, recording the tensioning force and the tensile length of the carbon fiber plate (1), and then loosening the carbon fiber plate (1);
D. uniformly coating primer at the position where the carbon fiber plate (1) is bonded on the bottom surface of the bridge, uniformly coating carbon plate glue on the side surface, close to the bridge, of the carbon fiber plate (1), then tensioning the carbon fiber plate (1) again according to the tensioning force in pretensioning, and bonding the carbon fiber plate (1) to the bottom surface of the bridge;
E. carry out surface protection to carbon fiber plate (1), install the bridge through connecting bolt (5) with a plurality of preforming (4) earlier, make preforming (4) to bridge one side extrusion carbon fiber plate (1), evenly paint one deck anticorrosive paint to the surface of carbon fiber plate (1), anchor mechanism (2) and stretch-draw mechanism (3) again, install bridge with safety cover (6) at last, make carbon fiber plate (1) be located safety cover (6).
9. The bridge carbon fiber reinforcement construction method according to claim 8, characterized in that: when the protective cover (6) is installed, the protective shells (7) are installed one by one from the side of the tensioning mechanism (3).
10. The bridge carbon fiber reinforcement construction method according to claim 9, characterized in that: when the protective cover (6) is installed, after all the protective shells (7) are installed in sequence, the adjacent two protective shells (7) are connected through the connecting piece (8), the first fixing bolt (85) and the second fixing bolt (86).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010295874.XA CN111455878B (en) | 2020-04-15 | 2020-04-15 | Bridge carbon fiber reinforced structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010295874.XA CN111455878B (en) | 2020-04-15 | 2020-04-15 | Bridge carbon fiber reinforced structure and construction method thereof |
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