CN209602981U - A kind of external prestressing strengthening structure - Google Patents
A kind of external prestressing strengthening structure Download PDFInfo
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- CN209602981U CN209602981U CN201822254760.1U CN201822254760U CN209602981U CN 209602981 U CN209602981 U CN 209602981U CN 201822254760 U CN201822254760 U CN 201822254760U CN 209602981 U CN209602981 U CN 209602981U
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- external prestressing
- strengthening structure
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- beam body
- prestressing strengthening
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Abstract
The utility model relates to a kind of external prestressing strengthening structures, including the supporting steel frame (2) being anchored in beam body (1), limit plate (3) are fixed on the supporting steel frame (2), limit plate (3) lower end is fixedly connected sub-wire diverter (4), is equipped with prestress wire (7) in the sub-wire diverter (4).Compared with prior art, the utility model mode of transfer force is clear, reliable, can meet the function to sub-wire diverter and the limit of external prestressing steel strand wires, and realize the light-duty design of limiting device, the construction for simplifying limiting device is avoided and is had an impact to standardization Prefabrication.
Description
Technical field
The utility model relates to a kind of limiting devices, more particularly, to a kind of external prestressing strengthening structure.
Background technique
External prestressing technique is arranged in prestressed strand outside beam body section, is passed by end anchorage and steering block
Pre-applied force is passed, its main feature is that external prestressing steels are only connected in anchored end, steering block and limited block position with structure, therefore is limited
Block plays a significant role in prestressed structure in vitro.
The limiting device of external prestressing tendon in externally prestressed bridge is a kind of special construction, it is except anchoring structure
The outer external prestressing tendon of construction is made and turned to across the interior and associated component of prestressing force force structure, is externally prestressed bridge
In one of most important, most critical structure construction.The material multiselect steel and concrete of limited block, the effect of limited block are to pass
The horizontal and vertical cross force of externally cable generation is passed, externally cable drift is limited, adjusts externally cable eccentricity.Pass through reasonable cloth
It is linear to set limited block adjustment externally cable, structure bending resistance, shear resistance can be changed, it is more preferable to be allowed to stress.Limited block is due to by huge
Lateral concentrated force and rubbing action with presstressed reinforcing steel, stress is complicated, once design is unreasonable, structural measure is improper or external
The position inaccurate of presstressed reinforcing steel will make limited block stress unreasonable, and be possible to cause prestressing force differential hardening or friction damage
It loses excessive.
Utility model content
The purpose of this utility model is exactly to provide and a kind of answer in advance in vitro to overcome the problems of the above-mentioned prior art
Power ruggedized construction.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of external prestressing strengthening structure, it is fixed on the supporting steel frame including the supporting steel frame being anchored in beam body
There is limit plate, the limit plate lower end is fixedly connected with sub-wire diverter, is equipped with prestress wire in the sub-wire diverter.
Further, the supporting steel frame includes the crossbeam of lateral arrangement, perpendicular to multiple stringers of crossbeam, the stringer
Upper end and beam welding, the stringer anchoring lower ends are in beam body.
Further, the stringer lower end is welded with link steel plate, and the junction steel plate lower surface is also welded with anchoring steel
Muscle, the anchor bar are embedded in beam body.
Further, the anchor bar is L-type steel muscle, and the longitudinal end of the anchor bar is mutually welded with junction steel plate
It connects.
Further, every piece of junction steel plate lower surface arrangement is there are four anchor bar, four anchor bars with connect steel
The sealing wire of plate is symmetrical centered on the axis of stringer.
Further, the crossbeam and stringer are I-steel.
Further, junction steel plate insertion beam body and parallel with beam body bottom.
Further, the limit plate is provided with muti-piece, and longitudinal measure is in crossbeam lower part.
Further, the limit plate is welded for cross steel plate.
Further, it is welded on limit plate on the outside of the sub-wire diverter.
A kind of external prestressing strengthening structure, when use, are mounted in beam body, and supporting steel frame passes through junction steel plate and anchoring
Reinforcing bar is connected with beam body, while by the fixed sub-wire diverter of limit plate, external prestressing steel strand wires pass through sub-wire diverter
Hole, the limiting device fix sub-wire diverter, so that external prestressing steel strand wires are forced through sub-wire diverter, support
Steelframe, junction steel plate are finally transmitted to concrete beam body.
Compared with prior art, the utility model has the following beneficial effects:
1, the pedestal of the utility model can be pre-buried in the beam precast stage, avoids having an impact Prefabrication, in segment
After the completion of prefabricated, the welding and anticorrosive work that limit fashioned iron rigid frame and pedestal is completed between phase or storage are modified.
2, the utility model structure mode of transfer force is clear, reliable, the fixation of sub-wire diverter, so that external prestressing steel twists
Line passes through sub-wire diverter, is transmitted to beam body by limit plate, supporting steel frame, junction steel plate.
3, the utility model designs lightness, facilitates precast assembly, reduces beam body self weight.
Detailed description of the invention
Fig. 1 is a kind of scheme of installation of external prestressing strengthening structure of the utility model；
Fig. 2 is a kind of structural schematic diagram of external prestressing strengthening structure of the utility model.
Shown in figure label:
1, beam body, 2, supporting steel frame, 3, limit plate, 4, sub-wire diverter, 5, junction steel plate 6, anchor bar 7, steel strand wires.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment
A kind of external prestressing strengthening structure, referring to Fig. 1, junction steel plate 5 is embedded to beam body 1 in beam body precast segment, even
It connects steel plate 5 and 1 bottom surface of beam body to keep flushing, avoids having an impact Prefabrication, after the completion of precast segment, the finishing phase or deposit
The welding and anti-corrosion of supporting steel frame 2 and 5 pedestal of junction steel plate are completed between putting.In use, making steel strand wires 7 from sub-wire diverter 4
It is passed through in hole, to reach position-limiting action.
With reference to attached drawing 2, anchor bar 6 is welded on junction steel plate 5, in 1 prefabrication phase Transducers Embedded in Concrete beam body 1 of beam body
In, junction steel plate 5 connects the anchor bar 6 in Transducers Embedded in Concrete beam body 1 and is welded on supporting steel frame 2.Anchor bar 6 is bent
At L-shaped, direction across bridge is symmetrically welded on junction steel plate 5,6 upper and lower part of junction steel plate be welded in respectively the stringer of supporting steel frame 2 with
The end of anchor bar 6.The sealing wire of anchor bar 6 and junction steel plate 5 is symmetrical with the axis of supporting steel frame 2.Anchor bar 6 buries
Enter in concrete beam body 1, junction steel plate 5 is welded on 2 bottom of supporting steel frame for exposing concrete beam body 1, junction steel plate 5 and beam body
1 bottom is parallel, is partially submerged into beam body 1.Limit plate 3 is welded by cross steel plate.Connect supporting steel frame 2 and sub-wire diverter
4。
It is welded on the outside of sub-wire diverter 4 on limit plate 3, stress is allowed to be transmitted to supporting steel frame 2 again by limit plate 3
It is transmitted to junction steel plate 5 to be finally distributed in beam body 2, structural bearing capacity and crack resistance can be significantly improved, be effectively improved structure
Stress state.
It can understand the above description of the embodiments is intended to facilitate those skilled in the art and use practical
It is novel.Person skilled in the art obviously easily can make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiments without having to go through creative labor.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art's announcement according to the present utility model, do not depart from improvement that the utility model scope is made and
Modification should be all within the protection scope of the utility model.
Claims (10)
1. a kind of external prestressing strengthening structure, which is characterized in that described including the supporting steel frame (2) being anchored in beam body (1)
It is fixed on supporting steel frame (2) limit plate (3), limit plate (3) lower end is fixedly connected with sub-wire diverter (4), the sub-wire
Prestress wire (7) are equipped in diverter (4).
2. a kind of external prestressing strengthening structure according to claim 1, which is characterized in that supporting steel frame (2) packet
The crossbeam for including lateral arrangement, perpendicular to multiple stringers of crossbeam, the stringer upper end and beam welding, the stringer anchoring lower ends
In beam body (1).
3. a kind of external prestressing strengthening structure according to claim 2, which is characterized in that the stringer lower end is welded with
Junction steel plate (5), junction steel plate (5) lower surface are also welded with anchor bar (6), and the anchor bar (6) is embedded to beam body
(1) in.
4. a kind of external prestressing strengthening structure according to claim 3, which is characterized in that the anchor bar (6) is L
Steel bar, longitudinal end and the junction steel plate (5) of the anchor bar (6) mutually weld.
5. a kind of external prestressing strengthening structure according to claim 3, which is characterized in that under every piece of junction steel plate (5)
There are four anchor bar (6) for surface layout, and four anchor bars (6) and the sealing wire of junction steel plate (5) are with the axis of stringer
Center is symmetrical.
6. a kind of external prestressing strengthening structure according to claim 3, which is characterized in that the junction steel plate (5) is embedding
Enter beam body (1) and parallel with beam body (1) bottom.
7. a kind of external prestressing strengthening structure according to claim 2, which is characterized in that the crossbeam and stringer are
I-steel.
8. a kind of external prestressing strengthening structure according to claim 2, which is characterized in that limit plate (3) setting
There is muti-piece, longitudinal measure is in crossbeam lower part.
9. a kind of external prestressing strengthening structure according to claim 1, which is characterized in that the limit plate (3) is ten
Word steel plate is welded.
10. a kind of external prestressing strengthening structure according to claim 1, which is characterized in that the sub-wire diverter (4)
Outside is welded on limit plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822254760.1U CN209602981U (en) | 2018-12-29 | 2018-12-29 | A kind of external prestressing strengthening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822254760.1U CN209602981U (en) | 2018-12-29 | 2018-12-29 | A kind of external prestressing strengthening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209602981U true CN209602981U (en) | 2019-11-08 |
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ID=68397833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822254760.1U Active CN209602981U (en) | 2018-12-29 | 2018-12-29 | A kind of external prestressing strengthening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209602981U (en) |
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2018
- 2018-12-29 CN CN201822254760.1U patent/CN209602981U/en active Active
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