CN207959023U - A kind of anchorage zone conversion equipment for suspension cable reinforcement system - Google Patents
A kind of anchorage zone conversion equipment for suspension cable reinforcement system Download PDFInfo
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- CN207959023U CN207959023U CN201820314388.6U CN201820314388U CN207959023U CN 207959023 U CN207959023 U CN 207959023U CN 201820314388 U CN201820314388 U CN 201820314388U CN 207959023 U CN207959023 U CN 207959023U
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- concrete box
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Abstract
The utility model is related to a kind of anchorage zone conversion equipment for suspension cable reinforcement system, including concrete box girder positioning plate, translation building block latches, frictional high-strength bolts, encased steel plate, steel bonding glue in billet, case；Wherein, the concrete box girder positioning plate is for L-shaped steel plate, and for inner surface with concrete box beam web by steel bonding glue connection, lower end outside surface is equipped with zigzag structure；The translation building block is the steel member that vertical section is T shapes, and the upper surface at top is equipped with the zigzag structure coordinated with the concrete box girder positioning plate；The riser of the translation building block is equipped with open slot and the lock positioned at opening notch；Encased steel plate is glued with steel bonding glue in bridge concrete box beam surface of internal cavity in the case.The utility model solves the problems of in the prior art by new technical solution, reduces the demand to bar planting, save construction cost, has positive technical meaning.
Description
Technical field
The utility model is related to a kind of anchorage zone conversion equipments for suspension cable reinforcement system, belong to bridge construction
Field of engineering technology.
Background technology
Currently, large-span pre-stressed concrete continuous rigid frame bridge generally existing middle span deflexion and box beam are asked both at home and abroad
Topic, it is often necessary to carry out reinforcing repair.
Traditional reinforcing method for maintaining, mainly reinforces bridge ontology；This method can delay downwarp and cracking
Fast development, but cannot fundamentally solve this disease.
Propose a kind of method for carrying out reinforcing repair to bridge using suspension cable reinforcement system in the art at present,
The shear-carrying capacity of girder can be made to be improved, depth of section is lifted.Suspension cable reinforcement system includes：Newly-built bridge tower increases
If suspension cable, the newly-increased components such as steel box-girder and the conversion equipment of steel box-girder and concrete box girder, the operation principle of system is logical
The monosymmetric suspension cable of tensioning Sarasota is crossed, Jiang Suoli passes to the steel box-girder of girder lower, transverse, steel box-girder and concrete
It is connected at box beam bottom surface by conversion equipment between box beam, steel box-girder is supplied to girder lifting force.Newly-increased reinforcement system and coagulation
The reliability anchored between native box beam is the key that weigh consolidation effect.Currently, resisting shearing by the quantity for increasing implantation reinforcing bar
Power not only increases difficulty, and may be because of intensive bar planting to ensure the reliability between attachment device and box beam to construction
Destroy the structure safety of concrete box girder.
In conjunction with the above, design a kind of bar planting quantity is few, difficulty of construction is low, reliability is high, girder at low cost anchoring
Conversion equipment is reinforced in the suspension cable reinforcement system of repair for Long span prestressed concrete box-beam bridge, is art technology
Personnel's urgent problem to be solved.
Invention content
Anchor existing for conversion equipment that bar planting quantity is more, difficulty of construction to solve bridge stay cable reinforcement system middle girder
Greatly, the problems such as of high cost, the utility model provide a kind of anchorage zone conversion equipment for suspension cable reinforcement system, make new
Increase firm and reliable connection between steel box-girder and concrete box girder, overall performance is superior, and can reduce bar planting quantity and reduce cost.
The utility model uses following technical proposals：
A kind of anchorage zone conversion equipment for suspension cable reinforcement system, which is characterized in that including concrete box girder
Positioning plate, translation building block, lock, frictional high-strength bolts, billet, encased steel plate and steel bonding glue in case；
Wherein, it is L-shaped steel plate that the concrete box girder positioning plate, which is section, and inner surface is logical with concrete box beam web
Steel bonding glue connection is crossed, lower end outside surface is equipped with zigzag structure；
The translation building block is the steel member that vertical section is T shapes, and the upper surface at top is equipped with zigzag structure, is mixed with described
The zigzag structure of solidifying soil box beam positioning plate forms cooperation；The riser of the translation building block is equipped with open slot；
It is described to latch the opening notch for being set to the translation building block；
Encased steel plate is glued with steel bonding glue in bridge concrete box beam surface of internal cavity in the case；
The frictional high-strength bolts include the spiral shell of both ends difference fixing concrete box beam positioning plate and encased steel plate in case
Bolt I, the bolt II that encased steel plate in case is fixed on to concrete box girder consolidate concrete box girder positioning plate and translation building block jointly
It is fixed on the bolt IV of translation building block due to the bolt III of concrete box girder, by lock；
The billet is separately positioned on the bolt I, II both ends of bolt.
The utility model has the following advantages that：
（1）Concrete box girder positioning plate in the utility model and between translation building block, by the cooperation of zigzag structure,
Frictional force between the two is significantly enhanced, the shear stress to bolt is reduced, improves what frictional high-strength bolts played
Effect can effectively reduce the quantity of drilling hole amount and bar planting or bolt, improve construction efficiency；
（2）The translation building block simple shape of T shapes, making easy to process can reduce cost and difficulty of processing；
（3）The steel box-girder that lock connection translation building block and suspension cable reinforcement system increase newly, can ensure steel box-girder in stress
Accurate positioning in the process, and newly-increased firm and reliable connection between steel box-girder and concrete box girder can be made.
Description of the drawings
Overall structure diagram when Fig. 1 is the utility model embodiment application；
Fig. 2 is the positions A-A cross section structure schematic diagram in Fig. 1；
Fig. 3 is part-structure enlarged diagram in Fig. 2；
Fig. 4 is part-structure schematic side view in Fig. 3；
Fig. 5 is the sawtooth shape steel plate high-strength bolt connection stress sketch after combining；
Fig. 6 is unilateral sawtooth shape steel plate high-strength bolt connection stress sketch；
Wherein：1. billet, 2. frictional high-strength bolts, 3. concrete box girder positioning plates, 4. translation building blocks, 5. locks
It detains, encased steel plate in 6. casees, 7. steel bonding glue, 8. steel box-girders, 9. suspension cables.
Specific implementation mode
The utility model is further illustrated with reference to the accompanying drawings and examples.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
A kind of typical embodiment of the application, as shown in Figures 2 to 4, to be a kind of for suspension cable reinforcement system
Anchorage zone conversion equipment, including：Concrete box girder positioning plate 3, translation building block 4, lock 5, frictional high-strength bolts 2, steel
Encased steel plate 6, steel bonding glue 7 in backing plate 1, case；Applied under state shown in Fig. 1.
Wherein, it is L-shaped steel plate that the concrete box girder positioning plate 3, which is section, is vertically long side, with the concrete box soffit of girder
Plate is bonded by steel bonding glue 7；Laterally to occupy the short side of lower end, upper surface is Nian Jie by steel bonding glue 7 with concrete box girder bottom plate,
Lower surface carries zigzag structure, this surface connects with 4 dome top surface of translation building block.
The translation building block 4 is the steel member that vertical section is T shapes, top（The edge of a wing）Upper surface be equipped with zigzag structure,
It is formed with the zigzag structure of the concrete box girder positioning plate 3 with merging close fastening, it can be with when in face of the stress of transverse direction
It avoids sliding relatively, gives full play to the effect of frictional high-strength bolts 2, to effectively reduce drilling hole amount, reduce making for bolt
With quantity and cost is reduced, the construction efficiency of raising.
In the T shapes in 4 vertical section of the translation building block, the face where vertical line is riser, and shape is as shown in Figure 4；The riser
It is equipped with open slot, the oral area of open slot is equipped with lock 5 together.The open slot is oblique lower opening, for accommodating oblique pull
Steel box-girder 8 in rope reinforcement system.
The lock 5 is for the steel box-girder 8 and the translation building block 4 that are increased newly in suspension cable reinforcement system to be linked together and solid
It is fixed；In use, first installing steel box-girder 8, after 8 location determination of steel box-girder, 5 installation fixation of lock is finished, it is ensured that 8 stress of steel box-girder
Afterwards still effective connection of steel box-girder 8 and translation building block 4 is ensure that in design position.
The suspension cable 9 of tensioning applies power obliquely upward, the translation building block 4 that steel box-girder 8 passes through close contact to steel box-girder 8
By upward pulling force effect in bridge concrete box beam.
Encased steel plate 6 is glued with steel bonding glue 7 in bridge concrete box beam surface of internal cavity in the case.
As shown in figure 3, the frictional high-strength bolts 2 include in both ends difference fixing concrete box beam positioning plate 3 and case
The bolt I of encased steel plate 6, the bolt II that encased steel plate in case 6 is fixed on to concrete box girder, by concrete box girder positioning plate 3
It is fixed on the bolt III of concrete box girder jointly with translation building block 4, lock 5 is fixed on to the bolt IV of translation building block 4.Wherein spiral shell
Bolt I passes across bridge concrete box beam side wall；Bolt II vertically passes through bridge concrete box beam bottom plate；Bolt III is imbedded at bridge
Concrete box girder bottom corresponds to the position of side wall, and the heeling-in by the way of " drilling+anchoring adhesive ", only outer end sets nut；Bolt
IV extends transversely through the riser of lock 5 and translation building block 4.Bolt III plays the role of bar planting simultaneously.
The billet 1 is separately positioned at the bolt I, the fixing nut at II both ends of bolt or bolt end, to increase
Forced area when king-bolt fastens, uniform pressure distribution, avoids concrete or positioning plate local compression serious.
After the structure in the present embodiment, compliance test result is as follows：
（1）Frictional high-strength bolts shear-carrying capacity calculates
According to Code for design of steel structures it is found that the partial safety factor for resistance of connection is defined as 1.30, therefore obtain the high-strength spiral shell of tradition
It tethers and connects standard value of bearing capacity
For
In formula：nfFor power transmission rubbing surface number；n1For high-strength bolt number；μ is rubbing surface anti-slip coefficient；P is bolt
Pretightning force；Design ultimate bearing capacity is connected for traditional high-strength bolt.
（2）Sawtooth shape steel plate high-strength bolt connector shear-carrying capacity calculates
As shown in Figure 5, Figure 6, it can be obtained according to projection
；
By static(al) friction formula,When connector occur sliding rupture, sliding critical load be
When between cog sliding rupture, bolt changes to the pressure and groove angle [alpha] of plate because of stress, relatively to pacify
It takes entirely
Therefore, bearing capacity T when full groove continuous damage content to retain sovereignty over a part of the country is
In formula：n2For high-strength bolt quantity；α0For initial dig-in angle degree；β is angular distortion coefficient, the springform with material
It is related to measure the factors such as E, bolt pretightening P, takes 0.95.
Example：Be respectively adopted frictional high-strength bolts and sawtooth shape steel plate high-strength bolt connector to anchorage zone section into
Row is reinforced, and high-strength bolt is the 10.9S high-strength bolts of M20, and pretightning force 155kN, the number of bolts that the former is intended that is n1, after
The number of bolts that person is intended that is n2, initial dig-in angle degree α0=45 °, power transmission face friction coefficient is 0.25, power transmission face number nf=1,
Examination, which calculates, can bear bolt ratio used in same shear-carrying capacity.
Since the shear-carrying capacity of design is identical, i.e.,
Then
By result of calculation it is found that 6 times or more of high-strength bolt number can be saved using sawtooth shape steel plate high-strength bolt connector
Amount.The high-strength bolt quantity of other contact surface friction coefficient is than as shown in table 1.
The corresponding high-strength bolt quantity ratio of the different contact surface friction coefficient of table 1
| Serial number | μ | n1:n2 | Serial number | μ | n1:n2 |
| 1 | 0.30 | 5.6816 | 4 | 0.45 | 5.3245 |
| 2 | 0.35 | 5.4553 | 5 | 0.50 | 5.3822 |
| 3 | 0.40 | 5.3449 | 6 | 0.55 | 5.5156 |
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly
The limitation of type protection domain, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel need not make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (1)
1. a kind of anchorage zone conversion equipment for suspension cable reinforcement system, which is characterized in that fixed including concrete box girder
Position plate（3）, translation building block（4）, lock（5）, frictional high-strength bolts（2）, billet（1）, encased steel plate in case（6）And steel bonding
Glue（7）；
Wherein, the concrete box girder positioning plate（3）It is that section leads to for L-shaped steel plate, inner surface and concrete box beam web
Cross steel bonding glue（7）Connection, lower end outside surface are equipped with zigzag structure；
The translation building block（4）It is the steel member that vertical section is T shapes, the upper surface at top is equipped with zigzag structure, is mixed with described
Solidifying soil box beam positioning plate（3）Zigzag structure formed cooperation；The translation building block（4）Riser be equipped with open slot；
The lock（5）It is set to the translation building block（4）Opening notch；
Encased steel plate in the case（6）With steel bonding glue（7）It is glued in bridge concrete box beam surface of internal cavity；
The frictional high-strength bolts（2）Distinguish fixing concrete box beam positioning plate including both ends（3）With encased steel plate in case（6）
Bolt I, by encased steel plate in case（6）It is fixed on the bolt II of concrete box girder, by concrete box girder positioning plate（3）And conversion
Component（4）It is fixed on the bolt III of concrete box girder jointly, will latch（5）It is fixed on translation building block（4）Bolt IV；
The billet（1）It is separately positioned on the bolt I, II both ends of bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820314388.6U CN207959023U (en) | 2018-03-08 | 2018-03-08 | A kind of anchorage zone conversion equipment for suspension cable reinforcement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820314388.6U CN207959023U (en) | 2018-03-08 | 2018-03-08 | A kind of anchorage zone conversion equipment for suspension cable reinforcement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207959023U true CN207959023U (en) | 2018-10-12 |
Family
ID=63741688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820314388.6U Expired - Fee Related CN207959023U (en) | 2018-03-08 | 2018-03-08 | A kind of anchorage zone conversion equipment for suspension cable reinforcement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207959023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252229A (en) * | 2018-03-08 | 2018-07-06 | 山东英才学院 | A kind of anchorage zone conversion equipment for suspension cable reinforcement system |
-
2018
- 2018-03-08 CN CN201820314388.6U patent/CN207959023U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252229A (en) * | 2018-03-08 | 2018-07-06 | 山东英才学院 | A kind of anchorage zone conversion equipment for suspension cable reinforcement system |
| CN108252229B (en) * | 2018-03-08 | 2024-05-17 | 山东交通学院 | Main girder anchoring area conversion device for stay cable reinforcement system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20200308 |
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| CF01 | Termination of patent right due to non-payment of annual fee |