CN113863707B - Reinforced concrete beam reinforced by carbon fiber cloth and reinforcing method - Google Patents
Reinforced concrete beam reinforced by carbon fiber cloth and reinforcing method Download PDFInfo
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- CN113863707B CN113863707B CN202111170424.9A CN202111170424A CN113863707B CN 113863707 B CN113863707 B CN 113863707B CN 202111170424 A CN202111170424 A CN 202111170424A CN 113863707 B CN113863707 B CN 113863707B
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- carbon fiber
- fiber cloth
- fixedly connected
- limiting
- reinforced concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0244—Increasing or restoring the load-bearing capacity of building construction elements of beams at places of holes, e.g. drilled in them
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
Abstract
The application discloses a reinforced concrete beam reinforced by carbon fiber cloth and a reinforcing method, which belong to the technical field of building engineering and comprise a reinforced concrete beam, carbon fiber cloth and a steel plate, wherein a fixing hole is formed in the reinforced concrete beam, the inner side wall of the fixing hole is fixedly connected with a connecting sleeve, a fixing column is fixedly connected to the inner side wall of the connecting sleeve, a limiting sleeve is fixedly connected to the steel plate, the connecting sleeve is sleeved on the limiting sleeve, the limiting sleeve is sleeved on the fixing column, and a first limiting component for the fixing column is arranged in the limiting sleeve; the steel plate is provided with a fixing mechanism for fixing the carbon fiber cloth. This application lays the in-process of carbon cloth on reinforced concrete surface, earlier is fixed in the steel sheet with the tip of carbon cloth through the fixed establishment in the steel sheet, wears to locate adapter sleeve with the spacing sleeve on the steel sheet after that, and this moment is under the effect of first spacing subassembly, is fixed in the spacing sleeve with the fixed column to reinforcing installation carbon cloth's efficiency of construction.
Description
Technical Field
The application relates to the technical field of constructional engineering, in particular to a reinforced concrete beam reinforced by carbon fiber cloth and a reinforcing method.
Background
In view of the fact that most areas in China are located in earthquake-prone areas, the building structure needs advanced reinforcement technology for seismic reinforcement and repair of damaged structures after earthquake, and therefore repair effect and efficiency are improved. In addition, the existing large number of existing buildings cannot meet the requirements due to the fact that the existing structures cannot meet the requirements due to load increase, natural disasters, environmental erosion, application change, design standard updating, structural reliability requirement improvement and the like, and need to be reinforced in time.
The invention discloses a reinforced concrete beam reinforced by carbon fiber cloth and a reinforcing method, which can refer to Chinese patent application with the publication number of CN103603509A in the related technology, wherein the reinforced concrete beam comprises a reinforced concrete beam, the bottom tension surface of the reinforced concrete beam is provided with the carbon fiber cloth uniformly adhered with the reinforced concrete beam, two ends of the carbon fiber cloth are connected with a steel plate, the steel plate is provided with a steel plate connecting hole, and the steel plate is connected with two ends of the reinforced concrete beam through the steel plate connecting hole, a nut and a chemical bolt.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the in-process on the reinforced concrete is fixed in to carbon cloth, need be earlier with carbon cloth winding on the steel sheet, then through the mode of chemical bolt and nut, fixes the steel sheet, and chemical bolt needs certain initial set time and curing time in the use to the efficiency of construction has been reduced.
Disclosure of Invention
In order to enhance the construction efficiency of installing the carbon fiber cloth, the application provides the reinforced concrete beam reinforced by the carbon fiber cloth and the reinforcing method.
The application provides a reinforced concrete beam reinforced by carbon fiber cloth and a reinforcing method thereof, which adopt the following technical scheme:
a reinforced concrete beam reinforced by carbon fiber cloth comprises a reinforced concrete beam, carbon fiber cloth and a steel plate, wherein a fixing hole is formed in the reinforced concrete beam, a connecting sleeve is fixedly connected to the inner side wall of the fixing hole, a fixing column is fixedly connected to the inner side wall of the connecting sleeve, a limiting sleeve is fixedly connected to the steel plate, the connecting sleeve is sleeved on the limiting sleeve, the limiting sleeve is sleeved on the fixing column, and a first limiting assembly for the fixing column is arranged in the limiting sleeve; and the steel plate is provided with a fixing mechanism for fixing the carbon fiber cloth.
Through adopting above-mentioned technical scheme, lay the in-process of carbon cloth on the reinforced concrete surface, earlier be fixed in the steel sheet through the fixed establishment in the steel sheet with the tip of carbon cloth, remove two steel sheets after that, make spacing sleeve on the steel sheet wear to locate in the adapter sleeve, spacing sleeve cover locates on the fixed column simultaneously, then under the effect of first spacing subassembly, be fixed in spacing sleeve with the fixed column in, thereby can reduce the degree of difficulty of fixed steel sheet, the required length of time of fixed steel sheet has been reduced simultaneously, and then the efficiency of construction of reinforcing installation carbon cloth.
Preferably, the inner peripheral surface of the limiting sleeve is provided with a first sliding groove, the outer peripheral surface of the fixed column is provided with a limiting groove, the first limiting assembly comprises a first limiting block, a first spring, a movable column and a second spring, the first limiting block is connected with the inner wall of the first sliding groove in a sliding mode, and the first limiting block is matched with the limiting groove in an inserting mode; one end of the first spring is fixedly connected with the inner wall of the first sliding chute, and the other end of the first spring is fixedly connected with the first limiting block; the movable column is connected to the inner wall of the limiting sleeve in a sliding mode, one end of the second spring is fixedly connected with the steel plate, and the other end of the second spring is fixedly connected with the movable column.
By adopting the technical scheme, in the process that the limiting sleeve penetrates through the connecting sleeve, the fixed column can simultaneously penetrate through the limiting sleeve, and the fixed column pushes the moving column to move; when the limiting groove on the moving column moves to be aligned with the first limiting block, the first spring pushes the first limiting block to be inserted into the limiting groove, so that the effect of fixing the limiting sleeve is achieved, and the steel plate is conveniently fixed on the reinforced concrete beam; by arranging the movable column, the first limiting block can be kept in the first sliding groove before the limiting sleeve penetrates through the connecting sleeve, so that the difficulty of the fixed column penetrating through the limiting sleeve is reduced; through setting up the second spring, be convenient for on the one hand remove the post and reset, on the other hand is convenient for reduce and removes the post and breaks away from spacing sleeve's possibility.
Preferably, a first mounting hole, a second mounting hole and a rotating cavity are formed in the steel plate, and the rotating cavity is communicated with the first mounting hole; the carbon fiber cloth is arranged in a first mounting hole and a second mounting hole of the steel plate in a penetrating mode at the same time, the fixing mechanism comprises a rotating disc, a first rotating rod and a second rotating rod, the rotating disc is connected to the inner side wall of the rotating cavity in a rotating mode, the first rotating rod is fixedly connected to the rotating disc, the rotating disc is provided with an arc-shaped hole, the end portion of the second rotating rod is connected with the inner side wall of the arc-shaped hole in a sliding mode, a gap is formed between the first rotating rod and the second rotating rod, and the carbon fiber cloth is arranged in the gap between the first rotating rod and the second rotating rod in a penetrating mode; the fixing mechanism further comprises a second limiting assembly used for fixing the second rotating rod; and a clamping mechanism for clamping the carbon fiber cloth is arranged in the second mounting hole.
Through adopting the above technical scheme, at the in-process on the end fixing steel sheet with carbon cloth, first the tip through removing carbon cloth wears to locate the first mounting hole of steel sheet in proper order, second mounting hole and rotation chamber, and make carbon cloth wear to locate the clearance between first dwang and the second dwang, after that, be located the carbon cloth of second mounting hole through the fixture centre gripping, remove the second dwang again next, make the second dwang promote carbon cloth to be rich on locating first dwang, then fix the second dwang under the effect through the spacing subassembly of second, thereby play the mesh of fixed carbon cloth.
Preferably, a second sliding groove is formed in the inner side wall of the arc-shaped hole, the second limiting assembly comprises a second limiting block and a third spring, the second limiting block is connected to the second sliding groove in a sliding mode, one end of the third spring is fixedly connected to the inner side wall of the second sliding groove, and the other end of the third spring is fixedly connected to the second limiting block; and an inclined plane is arranged on one side, away from the third spring, of the second limiting block, and the inclined plane of the second limiting block is upwards arranged from one side, close to the third spring, of the second limiting block to one side, away from the third spring, of the second limiting block in an inclined mode.
Through adopting above-mentioned technical scheme, at the in-process that removes the second dwang, the second dwang contacts earlier with the inclined plane of second stopper, this moment under the inclined plane effect of second stopper, make the second dwang can promote the second stopper and remove to the second spout in, after that when the second dwang no longer promotes the second stopper, the third spring promotes the second stopper and resets, the top side of second stopper and the outer peripheral face looks butt of second dwang this moment, the outer peripheral face of second dwang still with the inside wall looks butt in arc hole, thereby reach the purpose of fixed second dwang.
Preferably, the inner peripheral surface of the arc-shaped hole far away from one end of the second limiting assembly is fixedly connected with a protruding arc-shaped block.
Through adopting above-mentioned technical scheme, utilize protruding arc piece, before can reducing not fixed carbon cloth yet, the possibility that the second dwang took place to rock can also reduce the degree of difficulty that carbon cloth wore to locate the clearance between first dwang and the second rotation simultaneously.
Preferably, a clamping groove is formed in the inner side wall of the second mounting hole, the clamping mechanism comprises a first clamping plate, a second clamping plate and a pushing rod, the first clamping plate is fixedly connected to the inner side wall of the second mounting hole, and the second clamping plate is slidably connected with the inner side wall of the clamping groove; one end of the push rod is fixedly connected with the second clamping plate; the pushing rod penetrates through the steel plate and is connected with the steel plate in a sliding manner; the clamping mechanism further comprises a third limiting assembly used for fixing the second clamping plate.
Through adopting above-mentioned technical scheme, be arranged in the carbon cloth of second mounting hole for the centre gripping, remove through promoting the catch bar earlier, the catch bar removes and drives the second grip block and remove to make and all support tight carbon cloth between second grip block and the first grip block, then under the effect through the spacing subassembly of third, play the purpose of fixed second grip block, thereby under the interact of first grip block and second grip block, play the purpose of centre gripping carbon cloth.
Preferably, a third sliding groove is formed in the inner side wall of the clamping groove, the third limiting assembly comprises a third limiting block and a fourth spring, the third limiting block is connected with the inner side wall of the third sliding groove in a sliding mode, one end of the fourth spring is fixedly connected with the groove bottom of the third sliding groove, and the other end of the fourth spring is fixedly connected with the third limiting block.
Through adopting above-mentioned technical scheme, promote the in-process that the second grip block removed at the catch bar, when the second grip block no longer blockked the third stopper, the fourth spring promotes the third stopper and removes to make one side looks butt that first grip block was kept away from to third stopper and second grip block, thereby can reach the purpose of fixed second grip block, make second grip block and first grip block can press from both sides tight carbon cloth simultaneously.
Preferably, an inner cavity is formed in the steel plate, a driving mechanism for driving the rotating disc to rotate is arranged in the inner cavity, the driving mechanism comprises a rack, a driving rod, a first gear, a second gear and a third gear, the rack is fixedly connected with the moving column, the rack penetrates through the inner side wall of the inner cavity and is connected with the inner side wall of the inner cavity in a sliding manner; the driving rod is rotatably connected with the inner side wall of the inner cavity, the first gear is fixedly connected to the driving rod, and the first gear is meshed with the rack; the second gear is fixedly connected to the driving rod, the third gear is fixedly connected to the first rotating rod, and the second gear is meshed with the third gear.
Through adopting above-mentioned technical scheme, for the convenience of drive rolling disc rotates, remove the post through promoting earlier and remove, remove the post and remove and drive the rack and remove, the first gear of rack removal drive rotates, and first gear revolve drives the actuating lever and rotates, and the actuating lever rotates and drives second gear revolve, and second gear revolve rotation drive third gear revolve, and third gear revolve drives first rotating rod and rotate, and first rotating rod rotates and drives the rolling disc and rotate to reach drive rolling disc pivoted mesh.
Preferably, the end of the limiting sleeve is fixedly connected with a first magnetic ring, the inner circumferential surface of the end, far away from the steel plate, of the connecting sleeve is fixedly connected with a second magnetic ring, and the first magnetic ring is in contact with the second magnetic ring.
Through adopting above-mentioned technical scheme, utilize first magnetic ring and second magnetic ring, can strengthen the stability that spacing sleeve pipe was fixed in the adapter sleeve on the one hand, on the other hand can reduce the degree of difficulty that promotes spacing sleeve pipe and wear to locate the adapter sleeve.
On the other hand, the application provides a method for reinforcing a reinforced concrete beam by adopting carbon fiber cloth, and the following technical scheme is adopted:
a method for reinforcing a reinforced concrete beam by adopting carbon fiber cloth comprises the following steps:
paying off: on the bottom bending and pulling surface of the reinforced concrete beam, determining the positions of fixing holes in the reinforced concrete beam according to the size of the carbon fiber cloth, the actual positions of the carbon fiber cloth and the ink lines to be arranged on two sides, and the size of the steel plate;
installing a connecting sleeve: fixing the connecting sleeve on the inner side wall of the fixing hole;
polishing and chamfering: polishing the corner of the reinforced concrete beam which needs to be in contact with the carbon fiber cloth into an arc shape;
installing carbon fiber cloth: sequentially enabling the carbon fiber cloth to penetrate through the first mounting hole, the second mounting hole and the rotating cavity, and enabling the carbon fiber cloth to penetrate through a gap between the first rotating rod and the second rotating rod;
repairing and leveling: filling holes and pits on the polished concrete surface with a repairing adhesive; filling the deep part with high-grade cement slurry;
sticking carbon fiber cloth: lightly pressing and sticking the carbon fiber cloth to a position needing to be stuck by using a rubber pad, rolling for multiple times along the fiber direction by using a roller to remove air bubbles, then uniformly brushing structural adhesive on the surface of the carbon fiber, and rolling for multiple times along the carbon fiber direction by using the roller to enable the adhesive solution to fully soak the carbon fiber cloth; if the carbon fiber cloth is adhered in multiple layers, repeating the step;
fixing a steel plate: and the limiting sleeve on the steel plate is arranged in the connecting sleeve in a penetrating way.
By adopting the technical scheme, in the process of installing the carbon fiber cloth, the area needing construction is drawn on the reinforced concrete beam through ink lines, tool pens and the like, a fixing hole is drilled on the reinforced concrete beam, and then the connecting sleeve is fixed in the fixing hole through the expansion bolt; can also polish the processing to the chamfer of reinforced concrete roof beam simultaneously in can being fixed in the steel sheet with the tip of carbon cloth this moment, the pothole on the reinforced concrete roof beam repairs the processing, then pastes carbon cloth on the reinforced concrete roof beam again, is fixed in the reinforced concrete roof beam with the steel sheet at last again.
In summary, the present application includes at least one of the following beneficial technical effects:
in the process of laying the carbon fiber cloth on the surface of the reinforced concrete, the end part of the carbon fiber cloth is fixed in the steel plate through a fixing mechanism in the steel plate, then the two steel plates are moved, so that a limiting sleeve on the steel plate is arranged in the connecting sleeve in a penetrating manner, meanwhile, the limiting sleeve is sleeved on the fixing column, and then the fixing column is fixed in the limiting sleeve under the action of the first limiting assembly, so that the difficulty of fixing the steel plate can be reduced, the time required for fixing the steel plate is reduced, and the construction efficiency for installing the carbon fiber cloth is further enhanced;
in order to drive the rotating disc to rotate, the moving column is pushed to move, the moving column drives the rack to move, the rack drives the first gear to rotate, the first gear rotates to drive the driving rod to rotate, the driving rod rotates to drive the second gear to rotate, the second gear rotates to drive the third gear to rotate, the third gear rotates to drive the first rotating rod to rotate, and the first rotating rod rotates to drive the rotating disc to rotate, so that the purpose of driving the rotating disc to rotate is achieved;
in the process of installing the carbon fiber cloth, a region needing to be constructed is drawn on the reinforced concrete beam through ink lines, tool pens and the like, a fixing hole is drilled on the reinforced concrete beam, and then the connecting sleeve is fixed in the fixing hole through an expansion bolt; can also polish the processing to the chamfer of reinforced concrete roof beam simultaneously in can being fixed in the steel sheet with the tip of carbon cloth this moment, and the hole on the reinforced concrete roof beam is repaired and is handled, then pastes carbon cloth on the reinforced concrete roof beam, is fixed in the reinforced concrete roof beam with the steel sheet at last again.
Drawings
Fig. 1 is a sectional view of a reinforced concrete beam in an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a first image limiting assembly in an embodiment of the present application.
Figure 3 is a cross-sectional view of the steel plate and the spacing sleeve in an embodiment of the present application.
Fig. 4 is a schematic structural view of a highlighted fixing mechanism in the embodiment of the present application.
Fig. 5 is a schematic structural view illustrating a carbon fiber cloth wound on a first rotating shaft according to an embodiment of the present invention.
FIG. 6 is a schematic view of the structure of the highlighting clamping mechanism in the embodiment of the present application.
Description of reference numerals: 1. a reinforced concrete beam; 11. a placing groove; 12. a fixing hole; 2. carbon fiber cloth; 3. a steel plate; 31. a first mounting hole; 32. a second mounting hole; 33. a rotation chamber; 34. a limiting sleeve; 341. a first chute; 342. a first magnetic ring; 35. a clamping groove; 36. a movable cavity; 37. a third chute; 38. an inner cavity; 4. connecting a sleeve; 41. fixing the column; 411. a limiting groove; 42. a second magnetic ring; 5. a first limit component; 51. a first stopper; 52. a first spring; 53. moving the column; 54. a second spring; 6. a fixing mechanism; 61. rotating the disc; 611. an arc-shaped hole; 612. a second chute; 62. a first rotating lever; 63. a second rotating rod; 64. a second limiting component; 641. a second limiting block; 642. a third spring; 65. a convex arc-shaped block; 7. a clamping mechanism; 71. a first clamping plate; 72. a second clamping plate; 73. a push rod; 74. a third limiting component; 741. a third limiting block; 742. a fourth spring; 75. a movable plate; 76. a fifth spring; 8. a drive mechanism; 81. a rack; 82. a drive rod; 83. a first gear; 84. a second gear; 85. a third gear.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses a reinforced concrete beam reinforced by carbon fiber cloth. Referring to fig. 1, the reinforced concrete beam reinforced by the carbon fiber cloth comprises a reinforced concrete beam 1, carbon fiber cloth 2 and a steel plate 3, wherein the carbon fiber cloth 2 is adhered to the bottom side of the reinforced concrete beam 1 and two side surfaces adjacent to the bottom side, and the carbon fiber cloth 2 adhered to the reinforced concrete beam 1 is used for reinforcing the reinforced concrete beam 1; on every carbon cloth 2's both ends all were fixed in steel sheet 3, and on every steel sheet 3 all was fixed in reinforced concrete roof beam 1, steel sheet 3 was used for further reinforcing carbon cloth 2 and reinforced concrete roof beam 1's joint strength.
As shown in fig. 1 and 2, a placing groove 11 is formed in the reinforced concrete beam 1, and the placing groove 11 in the reinforced concrete beam 1 is matched with the steel plate 3. The fixing hole 12 has been seted up to the inside wall of arrangement groove 11, fixedly connected with adapter sleeve 4 on the inside wall of fixing hole 12, and the mode of installation adapter sleeve 4 can be for expansion bolts fixed etc.. Fixedly connected with fixed column 41 and second magnetic ring 42 on the inside wall of adapter sleeve 4, fixedly connected with limit sleeve 34 on the steel sheet 3, when steel sheet 3 was fixed in on reinforced concrete roof beam 1, adapter sleeve 4 cover was located on limit sleeve 34, and limit sleeve 34 cover was located on fixed column 41.
As shown in fig. 1, fig. 2 and fig. 3, two first sliding grooves 341 are formed in the inner peripheral surface of the limiting sleeve 34, the two first sliding grooves 341 are symmetrically arranged along the axis of the limiting sleeve 34, first limiting assemblies 5 for fixing the fixing column 41 are arranged in the limiting sleeve 34, each first limiting assembly 5 comprises a first limiting block 51, a first spring 52, a moving column 53 and a second spring 54, the number of the first limiting blocks 51 is two, the two first limiting blocks 51 are slidably connected with the inner side walls of the two first sliding grooves 341 in a one-to-one correspondence manner, two limiting grooves 411 are formed in the fixing column 41, and the two first limiting blocks 51 are in one-to-one insertion fit with the two limiting grooves 411. The number of the first springs 52 is two, the two first springs 52 are respectively located in the two first sliding grooves 341, one end of each first spring 52 is fixedly connected to the inner side wall of the first sliding groove 341 far away from the axis of the fixed column 41, and the other end of each first spring 52 is fixedly connected to one side of the first limiting block 51 far away from the axis of the fixed column 41. The moving column 53 is slidably connected to the inner wall of the limit sleeve 34 along the axial direction of the limit sleeve 34, the moving column 53 is abutted against the fixed column 41, and the moving column 53 can be used for blocking the first limit block 51 from moving. Before the steel plate 3 is mounted, the first stopper 51 is located in the first sliding groove 341 under the block of the moving column 53. The second spring 54 is located in the position-limiting sleeve 34, one end of the second spring 54 is fixedly connected with the steel plate 3, and the other end of the second spring 54 is fixedly connected with one side of the moving column 53 far away from the fixed column 41.
In the process of moving the limiting sleeve 34 to penetrate through the connecting sleeve 4, the fixing column 41 pushes the moving column 53 to move first, when the fixing column 41 moves to the two limiting grooves 411 and is aligned with the two first limiting blocks 51, the first spring 52 can push the first limiting blocks 51 to move, so that the first limiting blocks 51 are inserted into the limiting grooves 411, and the purpose of fixing the limiting sleeve 34 is achieved.
As shown in fig. 2 and fig. 3, one end of the position limiting sleeve 34 away from the steel plate 3 is fixedly connected with a first magnetic ring 342, the first magnetic ring 342 contacts with the second magnetic ring 42, and the first magnetic ring 342 and the second magnetic ring 42 attract each other. By utilizing the first magnetic ring 342 and the second magnetic ring 42, the stability of the limiting sleeve 34 fixed in the connecting sleeve 4 can be enhanced, and the difficulty of pushing the limiting sleeve 34 to penetrate through the connecting sleeve 4 can be reduced.
As shown in fig. 3, 4, and 5, the steel plate 3 has a first mounting hole 31, a second mounting hole 32, and a rotation cavity 33 formed therein, and the rotation cavity 33 communicates with the second mounting hole 32. The carbon fiber cloth 2 is arranged in the first mounting hole 31, the second mounting hole 32 and the rotating cavity 33 of the steel plate 3 in a penetrating manner, and the fixing mechanism 6 for fixing the carbon fiber cloth 2 is arranged in the rotating cavity 33.
As shown in fig. 5 and 6, the fixing mechanism 6 includes two rotating disks 61, a first rotating rod 62, a second rotating rod 63 and a second limiting assembly 64, two rotating disks 61 are all rotatably connected to the inner side wall of the rotating cavity 33, an arc-shaped hole 611 is formed in each rotating disk 61, a protruding arc-shaped block 65 is fixedly connected to the inner side wall of one end of each arc-shaped hole 611 far away from the first mounting hole 31, and the inner side wall of one end of each arc-shaped hole 611 close to the first mounting hole 31 is provided with the second limiting assembly 64. The two ends of the first rotating rod 62 are fixedly connected with the two rotating discs 61 in a one-to-one correspondence manner, the two ends of the second rotating rod 63 are in one-to-one correspondence sliding fit with the arc-shaped holes 611 on the two rotating discs 61, a gap is formed between the first rotating rod 62 and the second rotating rod 63, and the carbon fiber cloth 2 penetrates through the gap between the first rotating rod 62 and the second rotating rod 63.
The clearance between first dwang 62 and the second dwang 63 is worn to locate carbon cloth 2 earlier at the in-process of fixed carbon cloth 2, second dwang 63 is located one side that first dwang 62 kept away from first mounting hole 31 this moment, stir second dwang 63 and remove after that, make second dwang 63 drive carbon cloth 2 rich locate on first dwang 62, fixed second dwang 63 under the effect of rethread second spacing subassembly 64, then rotate rolling disc 61 again, make carbon cloth 2 rich locate on first dwang 62 and second dwang 63, thereby play the purpose of fixed carbon cloth 2.
As shown in fig. 4, 5 and 6, there are two sets of the second limiting assemblies 64, and the two sets of the second limiting assemblies 64 are respectively disposed on the two rotating discs 61. The inner side wall of the arc-shaped hole 611 is provided with a second sliding groove 612, the second limiting assembly 64 includes a second limiting block 641 and a third spring 642, the second limiting block 641 is slidably connected with the inner side wall of the second sliding groove 612, one end of the third spring 642 is fixedly connected with the inner side wall of the second sliding groove 612, and the other end of the third spring 642 is fixedly connected with the second limiting block 641. An inclined surface is disposed on a side of the second stopper 641 away from the third spring 642, and the inclined surface of the second stopper 641 is inclined upward from a side close to the third spring 642 to a side away from the third spring 642.
In the process of moving the second rotating rod 63, the second rotating rod 63 contacts the inclined surface of the second limiting block 641 first, at this time, under the action of the inclined surface of the second limiting block 641, the second rotating rod 63 can push the second limiting block 641 to move into the second sliding groove 612, and then when the second rotating rod 63 does not push the second limiting block 641 any more, the third spring 642 pushes the second limiting block 641 to reset, at this time, the top side of the second limiting block 641 abuts against the outer peripheral surface of the second rotating rod 63, the outer peripheral surface of the second rotating rod 63 abuts against the inner side wall of the arc-shaped hole 611, and therefore the purpose of fixing the second rotating rod 63 is achieved.
As shown in fig. 2, 3 and 4, an inner cavity 38 is formed in the steel plate 3, a driving mechanism 8 for driving the rotating disc 61 to rotate is arranged in the inner cavity 38, the driving mechanism 8 includes a rack 81, a driving rod 82, a first gear 83, a second gear 84 and a third gear 85, one end of the rack 81 is fixedly connected with one side of the moving column 53 away from the fixed column 41, the rack 81 penetrates through the inner side wall of the inner cavity 38, and the rack 81 is slidably connected to the inner side wall of the inner cavity 38. Both ends of the driving rod 82 are rotatably connected to the inner side wall of the inner cavity 38, the first gear 83 is fixedly connected to the driving rod 82, the second gear 84 is also fixedly connected to the first driving rod 82, and the axial lines of the first gear 83, the driving rod 82 and the second gear 84 are coincident. The third gear 85 is fixedly connected to the first rotating rod 62, the first gear 83 is engaged with the rack 81, and the second gear 84 is engaged with the third gear 85.
In order to drive the rotating disc 61 to rotate, the moving column 53 is pushed to move, the moving column 53 moves to drive the rack 81 to move, the rack 81 moves to drive the first gear 83 to rotate, the first gear 83 rotates to drive the driving rod 82 and the second gear 84 to rotate, the second gear 84 rotates to drive the third gear 85 to rotate, the third gear 85 rotates to drive the first rotating rod 62 to rotate, and the first rotating rod 62 rotates to drive the rotating disc 61 to rotate, so that the purpose of driving the rotating disc 61 to rotate is achieved.
As shown in fig. 3, 4 and 6, the inner sidewall of the second mounting hole 32 is provided with a clamping groove 35, and the steel plate 3 is further provided with a movable cavity 36. The second mounting hole 32 is internally provided with a clamping mechanism 7 for clamping the carbon fiber cloth 2. The clamping mechanism 7 comprises a first clamping plate 71, a second clamping plate 72, a pushing rod 73, a movable plate 75, a fifth spring 76 and a third limiting component 74, the first clamping plate 71 is fixedly connected to the inner side wall of the second mounting hole 32, the second clamping plate 72 is slidably connected with the inner side wall of the clamping groove 35, and one side, close to each other, of the first clamping plate 71 and one side, close to the second clamping plate 72, of the second clamping plate 72 are abutted to the carbon fiber cloth 2. The movable plate 75 is slidably connected to the inner side wall of the movable cavity 36, the push rod 73 penetrates through the steel plate 3 and the movable plate 75, the push rod 73 is slidably connected with the steel plate 3, and the push rod 73 is fixedly connected with the movable plate 75. The fifth spring 76 is sleeved on the pushing rod 73, one end of the fifth spring 76 is fixedly connected to the inner sidewall of the movable chamber 36, and the other end of the fifth spring 76 is fixedly connected to the movable plate 75.
As shown in fig. 3, 4 and 6, a third sliding groove 37 is formed on the top wall of the clamping groove 35, the third limiting component 74 includes a third limiting block 741 and a fourth spring 742, the third limiting block 741 is slidably connected to the inner side wall of the third limiting groove 411, one end of the fourth spring 742 is fixedly connected to the top wall of the third sliding groove 37, and the other end of the fourth spring 742 is fixedly connected to the top side of the third limiting block 741. The bottom side of the third stopper 741 is provided with an inclined surface, and the inclined surface of the third stopper 741 is inclined upward from a side close to the fourth spring 742 to a side far from the fourth spring 742.
In the process of pushing the pushing rod 73 to move, the pushing rod 73 moves to drive the movable plate 75 to move, the pushing rod 73 moves to further drive the second clamping plate 72 to move, so that the second clamping plate 72 and the first clamping plate 71 are tightly abutted against the carbon fiber cloth 2, then the purpose of fixing the second clamping plate 72 is achieved under the effect of the third limiting assembly 74, and the purpose of clamping the carbon fiber cloth 2 is achieved under the interaction of the first clamping plate 71 and the second clamping plate 72.
The embodiment of the application discloses a method for reinforcing a reinforced concrete beam by adopting carbon fiber cloth, which comprises the following reinforcing steps:
paying off: on the bottom bending and pulling surface of the reinforced concrete beam 1, determining the positions of a placement groove 11 and a fixing hole 12 on the reinforced concrete beam 1 according to the size of the carbon fiber cloth 2 and the two sides of the actual position to be placed and the size of the steel plate 3;
installing the connecting sleeve 4: fixing the connecting sleeve 4 on the inner side wall of the fixing hole 12;
polishing and chamfering: grinding the corner of the reinforced concrete beam 1 which needs to be in contact with the carbon fiber cloth 2 into an arc shape;
installing the carbon fiber cloth 2: the carbon fiber cloth 2 sequentially passes through the first mounting hole 31, the second mounting hole 32 and the rotating cavity 33, and the carbon fiber cloth 2 passes through the gap between the first rotating rod 62 and the second rotating rod 63;
repairing and leveling: filling holes and pits on the polished concrete surface with a repairing adhesive; filling the deep part with high grade cement slurry;
and (3) sticking the carbon fiber cloth 2: lightly pressing and sticking the carbon fiber cloth 2 to a position needing to be stuck by using a rubber pad, rolling for multiple times along the fiber direction by using a roller to remove air bubbles, then uniformly brushing structural adhesive on the surface of the carbon fiber, and rolling for multiple times along the carbon fiber direction by using the roller to ensure that the adhesive solution fully soaks the carbon fiber cloth 2; if the carbon fiber cloth 2 is pasted in multiple layers, repeating the step;
fixing the steel plate 3: the limiting sleeve 34 on the steel plate 3 is arranged in the connecting sleeve 4 in a penetrating way.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides an adopt reinforced concrete roof beam of carbon cloth reinforcement, includes reinforced concrete roof beam (1), carbon cloth (2) and steel sheet (3), its characterized in that: a fixing hole (12) is formed in the reinforced concrete beam (1), the inner side wall of the fixing hole (12) is fixedly connected with a connecting sleeve (4), the inner side wall of the connecting sleeve (4) is fixedly connected with a fixing column (41), a limiting sleeve (34) is fixedly connected to the steel plate (3), the connecting sleeve (4) is sleeved on the limiting sleeve (34), the limiting sleeve (34) is sleeved on the fixing column (41), and a first limiting assembly (5) for fixing the column (41) is arranged in the limiting sleeve (34); the steel plate (3) is provided with a fixing mechanism (6) for fixing the carbon fiber cloth (2);
the inner circumferential surface of the limiting sleeve (34) is provided with a first sliding groove (341), the outer circumferential surface of the fixed column (41) is provided with a limiting groove (411), the first limiting assembly (5) comprises a first limiting block (51), a first spring (52), a moving column (53) and a second spring (54), the first limiting block (51) is in sliding connection with the inner wall of the first sliding groove (341), and the first limiting block (51) is in inserting fit with the limiting groove (411); one end of the first spring (52) is fixedly connected with the inner wall of the first sliding groove (341), and the other end of the first spring (52) is fixedly connected with the first limiting block (51); the movable column (53) is connected to the inner wall of the limiting sleeve (34) in a sliding mode, one end of the second spring (54) is fixedly connected with the steel plate (3), and the other end of the second spring (54) is fixedly connected with the movable column (53);
a first mounting hole (31), a second mounting hole (32) and a rotating cavity (33) are formed in the steel plate (3), and the rotating cavity (33) is communicated with the first mounting hole (31); the carbon fiber cloth (2) is arranged in a penetrating manner in the first mounting hole (31) and the second mounting hole (32) of the steel plate (3), the fixing mechanism (6) comprises a rotating disc (61), a first rotating rod (62) and a second rotating rod (63), the rotating disc (61) is connected to the inner side wall of the rotating cavity (33) in a rotating manner, the first rotating rod (62) is fixedly connected to the rotating disc (61), the rotating disc (61) is provided with an arc-shaped hole (611), the end part of the second rotating rod (63) is connected with the inner side wall of the arc-shaped hole (611) in a sliding manner, a gap is formed between the first rotating rod (62) and the second rotating rod (63), and the carbon fiber cloth (2) is arranged in the gap between the first rotating rod (62) and the second rotating rod (63) in a penetrating manner; the fixing mechanism (6) further comprises a second limiting assembly (64) for fixing a second rotating rod (63); and a clamping mechanism (7) for clamping the carbon fiber cloth (2) is arranged in the second mounting hole (32).
2. The reinforced concrete beam reinforced with the carbon fiber cloth according to claim 1, wherein: a second sliding groove (612) is formed in the inner side wall of the arc-shaped hole (611), the second limiting assembly (64) comprises a second limiting block (641) and a third spring (642), the second limiting block (641) is connected to the second sliding groove (612) in a sliding mode, one end of the third spring (642) is fixedly connected to the inner side wall of the second sliding groove (612), and the other end of the third spring (642) is fixedly connected to the second limiting block (641); an inclined surface is arranged on one side, far away from the third spring (642), of the second limiting block (641), and the inclined surface of the second limiting block (641) is arranged in an inclined mode from one side, close to the third spring (642), to one side, far away from the third spring (642).
3. A reinforced concrete beam reinforced with carbon fiber cloth according to claim 2, wherein: and a convex arc block (65) is fixedly connected to the inner peripheral surface of one end, far away from the second limiting assembly (64), of the arc hole (611).
4. A reinforced concrete beam reinforced with carbon fiber cloth according to claim 1, wherein: a clamping groove (35) is formed in the inner side wall of the second mounting hole (32), the clamping mechanism (7) comprises a first clamping plate (71), a second clamping plate (72) and a pushing rod (73), the first clamping plate (71) is fixedly connected to the inner side wall of the second mounting hole (32), and the second clamping plate (72) is in sliding connection with the inner side wall of the clamping groove (35); one end of the push rod (73) is fixedly connected with the second clamping plate (72); the push rod (73) penetrates through the steel plate (3), and the push rod (73) is connected with the steel plate (3) in a sliding manner; the clamping mechanism (7) further comprises a third limiting component (74) used for fixing the second clamping plate (72).
5. A reinforced concrete beam reinforced with carbon fiber cloth according to claim 4, wherein: the clamping groove (35) is provided with a third sliding groove (37) on the inner side wall, the third limiting component (74) comprises a third limiting block (741) and a fourth spring (742), the third limiting block (741) is in sliding connection with the inner side wall of the third sliding groove (37), one end of the fourth spring (742) is fixedly connected with the groove bottom of the third sliding groove (37), and the other end of the fourth spring (742) is fixedly connected with the third limiting block (741).
6. The reinforced concrete beam reinforced with the carbon fiber cloth according to claim 1, wherein: an inner cavity (38) is formed in the steel plate (3), a driving mechanism (8) used for driving the rotating disc (61) to rotate is arranged in the inner cavity (38), the driving mechanism (8) comprises a rack (81), a driving rod (82), a first gear (83), a second gear (84) and a third gear (85), the rack (81) is fixedly connected with the moving column (53), the rack (81) penetrates through the inner side wall of the inner cavity (38), and the rack (81) is in sliding connection with the inner side wall of the inner cavity (38); the driving rod (82) is rotatably connected with the inner side wall of the inner cavity (38), the first gear (83) is fixedly connected to the driving rod (82), and the first gear (83) is meshed with the rack (81); the second gear (84) is fixedly connected to the driving rod (82), the third gear (85) is fixedly connected to the first rotating rod (62), and the second gear (84) is meshed with the third gear (85).
7. The reinforced concrete beam reinforced with the carbon fiber cloth according to claim 6, wherein: the end part of the limiting sleeve (34) is fixedly connected with a first magnetic ring (342), the inner circumferential surface of one end, far away from the steel plate (3), of the connecting sleeve (4) is fixedly connected with a second magnetic ring (42), and the first magnetic ring (342) is in contact with the second magnetic ring (42).
8. A method for reinforcing a reinforced concrete beam by using carbon fiber cloth, based on the reinforced concrete beam reinforced by carbon fiber cloth according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
paying off: on the bottom bending and pulling surface of the reinforced concrete beam (1), determining the position of a fixing hole (12) on the reinforced concrete beam (1) according to the size of the carbon fiber cloth (2) and the ink lines on two sides of the actual position to be arranged and the size of the steel plate (3);
installing the connecting sleeve (4): fixing the connecting sleeve (4) on the inner side wall of the fixing hole (12);
and (3) grinding chamfers: grinding the corner of the reinforced concrete beam (1) which needs to be in contact with the carbon fiber cloth (2) into an arc shape;
installing the carbon fiber cloth (2): the carbon fiber cloth (2) sequentially penetrates through the first mounting hole (31), the second mounting hole (32) and the rotating cavity (33), and the carbon fiber cloth (2) penetrates through a gap between the first rotating rod (62) and the second rotating rod (63);
repairing and leveling: filling holes and depressions on the polished concrete surface with a repairing adhesive; filling the deep part with high-grade cement slurry;
sticking the carbon fiber cloth (2): lightly pressing and sticking the carbon fiber cloth (2) to a position needing to be stuck by using a rubber pad, rolling for multiple times along the fiber direction by using a roller to remove air bubbles, then uniformly brushing structural adhesive on the surface of the carbon fiber, and rolling for multiple times along the carbon fiber direction by using the roller to enable the adhesive solution to fully soak the carbon fiber cloth (2); if the carbon fiber cloth (2) is pasted in multiple layers, repeating the step;
fixing steel plate (3): and a limiting sleeve (34) on the steel plate (3) is arranged in the connecting sleeve (4) in a penetrating way.
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| CN202111170424.9A CN113863707B (en) | 2021-10-08 | 2021-10-08 | Reinforced concrete beam reinforced by carbon fiber cloth and reinforcing method |
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| CN202111170424.9A CN113863707B (en) | 2021-10-08 | 2021-10-08 | Reinforced concrete beam reinforced by carbon fiber cloth and reinforcing method |
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