CN208981818U - A kind of parabola shaped external prestressing bracing means - Google Patents
A kind of parabola shaped external prestressing bracing means Download PDFInfo
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- CN208981818U CN208981818U CN201821613201.9U CN201821613201U CN208981818U CN 208981818 U CN208981818 U CN 208981818U CN 201821613201 U CN201821613201 U CN 201821613201U CN 208981818 U CN208981818 U CN 208981818U
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- parabola shaped
- reinforcement
- parabola
- shaped
- external prestressing
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Abstract
The utility model discloses a kind of parabola shaped external prestressing bracing means, and the beam bottom portion of reinforcement is provided with the parabola shaped steering mechanism for turning to the external prestressing tendon for drawing and lifting reinforcement；Parabola shaped steering mechanism by H-shaped external member, parabola shaped block and put more energy into rib group at, there is slot on the inside of H-shaped external member, the clear span of slot is with reinforcement with the wide and formation tight fit after being inserted in reinforcement, parabola shaped block is connected to the left and right sides of H-shaped external member, and several floors of putting more energy into are provided on the upside of parabola shaped block；External prestressing tendon is pressed on the lower surface of parabola shaped block by tensing.The advantages of the utility model has durable conducive to prestressed cable and prevents reinforcement local pressure super large from causing to damage, reduction loss of prestress.
Description
Technical field
The utility model belongs to technical field of buildings, and in particular to a kind of beam bracing means.
Background technique
In building field, in order to improve the intensity of beam, common method has the section etc. for increasing beam, but this will increase beam
Self weight and to column increase load, and apply external prestress strengthening method compared to enlarging section method have construct it is convenient,
Advantage at low cost；And this method can carry out active unloading to strenthening member by prestressed stretch-draw, compared to stickup carbon fiber
Dimension or steel bonding method, consolidation effect are more preferable.But traditional external prestress strengthening method is using fold-line-shaped prestressed cable cloth
It sets, forms a bigger concentrated force in beam bottom steering position.The steering of this fold-line-shaped cause prestressed cable and steering block it
Between frictional force increase, cause bigger loss of prestress, and be easy to cause the damage of prestressed cable.Fold-line-shaped is turned to adding
The concrete of Gu Liang forms bigger office's pressure, is not suitable for applying when original structure concrete strength is relatively low.
Therefore, the arrangement for improving the pressure-bearing form of prestressed cable is to promote the critical issue of external prestressing reinforcement performance.
Summary of the invention
The purpose of this utility model is to overcome defect existing for the external prestressing tendon broken line pressure-bearing form of the prior art,
The concentrated force for providing a kind of turning point by external prestressing tendon is divided into equally distributed distributed force, to reduce prestressing force damage
It loses, promotes the device of the efficiency of external prestressing strengthening.
The purpose of this utility model is achieved through the following technical solutions.
A kind of parabola shaped external prestressing bracing means, characterized in that the beam bottom portion of reinforcement be provided with for pair
Draw and lift the parabola shaped steering mechanism that the external prestressing tendon of reinforcement turns to；Parabola shaped steering mechanism is by H-shaped external member, parabolic
Linear block and rib group of putting more energy into are at there is slot in H-shaped external member inside, and the clear span of slot is with reinforcement with the wide and shape after being inserted in reinforcement
At tight fit, parabola shaped block is connected to the left and right sides of H-shaped external member, if being provided on the upside of parabola shaped block
Dry floor of putting more energy into；External prestressing tendon is pressed on the lower surface of parabola shaped block by tensing.
After prestressed cable tensioning, prestressed cable applies uniform even distributed force to parabola shaped block；Block is by putting more energy into
This even distributed force is passed to H-shaped external member by floor, to form counter-force to reinforcement, has been reached and has been mitigated active force to reinforcement
Reinforce purpose.
Preferred embodiment, parabola shaped block are made of steel plate.With the workpiece of steel plate processing parabolic shape, have in technique
Advantage.
Preferred embodiment, H-shaped external member tiled configuration are symmetrical arranged.It is symmetrical arranged, makes stress balance.
The beneficial effects of the utility model are:
1, overcome defect existing for the external prestressing tendon broken line pressure-bearing form of the prior art, be conducive to prestressed cable it is durable and
It prevents reinforcement local pressure super large from causing to damage, reduces loss of prestress；
2, the connection of parabola shaped steering mechanism and reinforcement is very convenient, only need to put on H-shaped external member i.e. toward reinforcement
Can, without separately fixing；
3, the structure needs of various different beams can be met；
4, structure is simple, manufacturing cost is low.
Detailed description of the invention
Attached drawing 1 is an embodiment of the present invention structural schematic diagram；
Attached drawing 2 is the A-A diagrammatic cross-section of Fig. 1；
Attached drawing 3 is the B-B diagrammatic cross-section of Fig. 1；
Attached drawing 4 is parabola shaped steering mechanism's structural schematic diagram；
Attached drawing 5 is the 1-1 diagrammatic cross-section of Fig. 4；
Attached drawing 6 is the 2-2 diagrammatic cross-section of Fig. 4；
Attached drawing 7 is prior art fold-line-shaped external prestressing tendon schematic diagram.
In figure, reinforcement 1；External prestressing tendon 2；Parabola shaped steering mechanism 3；H-shaped external member 31；Parabola shaped block
32；It puts more energy into floor 33；Camber line 4；5 at steering force concentration.
Specific embodiment
Elaborate with reference to the accompanying drawing to the embodiments of the present invention: the present embodiment is with the utility model technology
Implemented under premised on scheme, the detailed implementation method and specific operation process are given, but the protection of the utility model
Range is not limited to the following embodiments.
Embodiment: as shown in Figure 1, Figure 2, Figure 3 shows, a kind of parabola shaped external prestressing bracing means, in the beam of reinforcement 1
Bottom is provided with the parabola shaped steering mechanism 3 for turning to the external prestressing tendon 2 for drawing and lifting reinforcement 1；Parabola shaped turn
It is made of to mechanism 3 H-shaped external member 31, parabola shaped block 32 and floor 33 of putting more energy into.Parabola shaped block 32 is made of steel plate,
Since the deformation processing of steel plate is much easier relative to the machining of steel part, it especially can be avoided non-circular curve and add in cutting
It is difficult present on work technique.Referring to fig. 4, Fig. 5 and Fig. 6.
H-shaped external member 31 is symmetrical arranged for tiled configuration, there is slot on the inside of H-shaped external member 31, the clear span of slot with reinforcement with it is wide simultaneously
It is formed and is fitted close after being inserted in reinforcement 1, then dexterously by means of the pressure-raising of 2 tension of external prestressing tendon, so that this knot
The cooperation of structure is not necessarily to other clamp device, or even connects screw without having the advantages that very easy, time saving and reliable.It throws
The linear block 32 of object is respectively symmetrically connected to the left and right sides of H-shaped external member 31, and two pieces of parabola shaped blocks are arranged in a steering block
32, the number of packages of steering block can be not only reduced under the conditions of onesize pulling force, due also to being to be symmetrical arranged and make stress balance can
Effect to avoid steering block by unilateral twisting resistance；The upside of parabola shaped block 32 is provided with several floors 33 of putting more energy into；Body
External prestressed rope 2 is pressed on the lower surface of parabola shaped block 32 by tensing, and arrow indicates in the camber line 4 of lower section in the middle part of Fig. 1
Pass through parabola block 32 and put more energy into floor 33 and H-shaped external member is applied to the stress distribution of 1 lower part corresponding position of reinforcement,
Isometric edge indicates that stress is impartial in camber line 4, and there is no in place of concentration active force for display.As the comparison of structure and performance,
Fig. 7 shows prior art fold-line-shaped external prestressing tendon structural schematic diagram, and piece number 5 indicates at steering force concentration in figure.
The utility model has durable conducive to prestressed cable and prevents reinforcement local pressure super large from causing to damage, and reduces pre-
The advantages of stress loss, principle is novel, and the processing is simple, and assembly is easy.The basic of the utility model has been shown and described above
The advantages of principle and main feature and the utility model.It should be understood by those skilled in the art that the utility model is not by above-mentioned
The limitation of embodiment, the description of the embodiments and the specification only illustrate the principle of the present utility model, is not departing from this reality
Under the premise of with novel spirit and scope, the utility model also has various changes and improvements, these changes and improvements are both fallen within
In the scope of the claimed invention.The utility model requires protection scope is by appended claims and its equivalent
It defines.
Claims (3)
1. a kind of parabola shaped external prestressing bracing means, characterized in that be provided in the beam bottom portion of reinforcement for drawing
Lift the parabola shaped steering mechanism that the external prestressing tendon of reinforcement turns to；Parabola shaped steering mechanism is by H-shaped external member, parabola
Shape block and rib group of putting more energy into are at there is slot in H-shaped external member inside, and the clear span of slot is formed with width and after being inserted in reinforcement with reinforcement
It is fitted close, parabola shaped block is connected to the left and right sides of H-shaped external member, is provided on the upside of parabola shaped block several
It puts more energy into floor；External prestressing tendon is pressed on the lower surface of parabola shaped block by tensing.
2. a kind of parabola shaped external prestressing bracing means according to claim 1, characterized in that parabola shaped block
It is made of steel plate.
3. a kind of parabola shaped external prestressing bracing means according to claim 1 or 2, characterized in that H-shaped external member is left
Right symmetrical configuration setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821613201.9U CN208981818U (en) | 2018-09-30 | 2018-09-30 | A kind of parabola shaped external prestressing bracing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821613201.9U CN208981818U (en) | 2018-09-30 | 2018-09-30 | A kind of parabola shaped external prestressing bracing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208981818U true CN208981818U (en) | 2019-06-14 |
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ID=66786307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821613201.9U Active CN208981818U (en) | 2018-09-30 | 2018-09-30 | A kind of parabola shaped external prestressing bracing means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208981818U (en) |
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2018
- 2018-09-30 CN CN201821613201.9U patent/CN208981818U/en active Active
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