CN110541369A - Device and method for additionally arranging prestressed steel strand in hollow plate hinge joint space - Google Patents
Device and method for additionally arranging prestressed steel strand in hollow plate hinge joint space Download PDFInfo
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- CN110541369A CN110541369A CN201910935951.0A CN201910935951A CN110541369A CN 110541369 A CN110541369 A CN 110541369A CN 201910935951 A CN201910935951 A CN 201910935951A CN 110541369 A CN110541369 A CN 110541369A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 77
- 239000010959 steel Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 28
- 230000002787 reinforcement Effects 0.000 claims abstract description 19
- 238000004873 anchoring Methods 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/067—Flat continuous joints cast in situ
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
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Abstract
The invention discloses a device and a method for additionally arranging a prestressed steel strand reinforcing device in a hollow plate hinge joint space, wherein the device comprises hollow plates and hollow plate hinge joints, the hollow plate hinge joints are arranged between the two hollow plates, hinge joint stirrups are uniformly arranged in the hollow plate hinge joints, and hinge joint longitudinal reinforcements are arranged on the inner sides of the hinge joint stirrups; an embedded corrugated pipe is also arranged in the hinge joint of the hollow plate, and one end of the embedded corrugated pipe is provided with an anchor steel bar; the surface of the hollow slab is provided with the anchoring area, the bottom surface of the hollow slab is provided with the steering block, the steel strand penetrates through the pre-buried corrugated pipe, the reinforcing device and the reinforcing method fully utilize the hinge joint space to add the pre-stressed steel strand to reinforce the hollow slab beam, the longitudinal bending resistance and the transverse integral stress performance of the hollow slab beam bridge can be improved, the disease hidden danger of the traditional hinge joint cracking and failure can be eliminated, the management and maintenance cost during the later period of operation is reduced, and the technical, economic and social benefits are greater.
Description
Technical Field
The invention relates to a device and a method for processing a hollow plate by utilizing a hollow plate hinge joint, in particular to a device and a method for reinforcing a prestressed steel strand by utilizing a hollow plate hinge joint space, and belongs to the field of bridge engineering maintenance and reinforcement.
Background
The hollow slab bridge has the advantages of simple structure, convenient construction, economic material, high construction speed, small building height, easy realization of standardization and industrial production and the like, and is widely applied to modern highway bridges. The design load standard of the hollow slab bridge constructed in the early stage is generally low, along with the rapid development of traffic construction, the load grade of a vehicle is beyond the bearing range of the bridge, and due to the lack of effective maintenance, the hollow slab bridge has a lot of diseases, the hinge joint of part of the hollow slab bridge is obviously damaged, the shearing force transmission effect is poor, the single slab stress during the driving load action is caused, and the driving safety and the service life of bridges and culverts are influenced.
At present, for the reinforcement technology of the hollow slab hinge joint, a steel beam is arranged at the bottom of a slab of a hollow slab beam bridge in some schemes, and prestressed tendons are stretched at the bottom of the slab of the hollow slab beam bridge in some schemes. Therefore, in the existing technology for reinforcing the hollow slab beam bridge, because no interaction exists between the hollow slabs, the phenomenon of single slab stress cannot be eliminated to a great extent, and the reinforcing efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the existing problems and provides a device and a method for reinforcing a prestressed steel strand by utilizing a hollow plate hinge joint space.
In order to solve the technical problems, the invention provides the following technical scheme:
The invention provides a prestressed steel strand reinforcing device additionally arranged in a hollow plate hinge joint space, which comprises hollow plates and hollow plate hinge joints, wherein the hollow plate hinge joints are arranged between the adjacent hollow plates, hinge joint stirrups are uniformly arranged in the hollow plate hinge joints, and hinge joint longitudinal reinforcements are arranged on the inner sides of the hinge joint stirrups; an embedded corrugated pipe is further arranged inside the hinge joint of the hollow plate, and one end of the embedded corrugated pipe is provided with an anchor steel bar; the surface of the hollow plate hinge joint is provided with an anchoring area, the bottom surface of the hollow plate hinge joint is provided with a steering block, and the steel strand penetrates through the embedded corrugated pipe.
as a preferred technical scheme of the invention, the surface of the hollow slab is also provided with bridge deck pavement, and the bridge deck pavement is internally provided with bridge deck pavement longitudinal steel bars and bridge deck pavement transverse steel bars.
As a preferable technical scheme of the invention, the hinge joint stirrups are distributed at intervals of 10-12cm inside the hinge joint of the hollow plate, and the hinge joint longitudinal reinforcements are arranged at the positions of the annular inner bottom edge and the quartering point of the hinge joint stirrups.
As a preferable technical scheme of the invention, the diameters of the hinge joint stirrup and the hinge joint longitudinal steel bar are both 12-16 mm.
According to a preferable technical scheme of the invention, the hollow plate hinge joint is fixed by pouring hinge joint concrete after the positions of the hinge joint stirrup, the hinge joint longitudinal steel bar, the pre-embedded corrugated pipe, the anchoring area and the steering block are fixed.
As a preferred technical scheme of the invention, when the hollow plate hinge joint is fixed through hinge joint concrete, a hollow plate hinge joint template is required to assist in positioning the hinge joint concrete.
As a preferable technical scheme of the invention, the hinge joint concrete removes the hollow plate hinge joint template when the strength reaches 80%, and the steel strand penetrates through the reserved corrugated pipe after the strength of the hinge joint concrete reaches 100%.
As a preferable technical scheme of the invention, both ends of the hollow plate are provided with hollow plate chiseling parts.
A method for reinforcing a prestressed steel strand by utilizing a hollow plate hinge joint space comprises the following steps:
The method comprises the steps of firstly, removing bridge deck pavement and hollow slab hinge joints on the surface of an original hollow slab, chiseling concrete on a web part of the hollow slab to enable the web to be a vertical surface, chiseling the surface of the concrete of the hollow slab, wherein the transverse width range of the chiseled hollow slab hinge joints is 20-40 cm.
And secondly, arranging hinge joint stirrups at intervals of 10-12cm in the longitudinal direction in the hinge joint of the hollow plate, wherein the diameter of each hinge joint stirrup is 12-16mm, arranging hinge joint longitudinal steel bars at the bottom edge and the quartering position of the annular inner side of each hinge joint stirrup, the diameter of each hinge joint longitudinal steel bar is 12-16mm, and reserving a prestressed pipeline, arranging an anchoring area, an anchoring steel bar and a steering block.
and thirdly, installing a template of the hollow plate hinge joint, pouring hinge joint concrete, dismantling the template after the concrete strength reaches 80%, penetrating a prestressed steel strand into a reserved pipeline after the concrete strength reaches 100%, simultaneously tensioning two ends by using a jack, and fixing the prestressed steel strand in the hollow plate hinge joint by using an anchorage device.
And thirdly, laying the bridge deck pavement longitudinal steel bars and the bridge deck transverse steel bars again, binding the hinge joint stirrups and the bridge deck longitudinal steel bars together, arranging the templates, pouring bridge deck concrete, and removing the templates after the concrete strength reaches 80% to finish the reinforcing construction of the hollow slab beam bridge.
the invention has the following beneficial effects: the prestressed steel twisted wire is additionally arranged in the hinge joint space to reinforce the hollow slab beam, so that the longitudinal bending resistance and the transverse integral stress performance of the hollow slab beam bridge can be improved, the hidden danger of the traditional hinge joint cracking and failure can be eliminated, the management and maintenance cost during later operation is reduced, and the method has great technical, economic and social benefits.
drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the original bridge deck pavement and hinge joint chiseling of the present invention;
FIG. 2 is a sectional view of a hollow core slab with concrete removed according to the present invention;
FIG. 3 is a schematic cross-sectional view of the hinge joint and the deck pavement reinforcing bars of the present invention;
FIG. 4 is a schematic representation of a steel strand according to the present invention;
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
example 1
As shown in fig. 1-4, the invention provides a device for additionally arranging a prestressed steel strand in a hollow plate hinge joint space, which comprises hollow plates 1 and hollow plate hinge joints 12, wherein the hollow plate hinge joints 12 are arranged between the adjacent hollow plates 1, hinge joint stirrups 10 are uniformly arranged in the hollow plate hinge joints 12, and hinge joint longitudinal steel bars 11 are arranged on the inner sides of the hinge joint stirrups 10; an embedded corrugated pipe 4 is also arranged in the hollow plate hinge joint 12, and one end of the embedded corrugated pipe 4 is provided with an anchor steel bar 5; the surface of the hollow plate hinge joint 12 is provided with the anchoring area 2, the bottom surface of the hollow plate hinge joint 12 is provided with the steering block 3, the steel strand 6 penetrates through the pre-embedded corrugated pipe 4, the reinforcing device and the reinforcing method fully utilize the hinge joint space to add the prestressed steel strand to reinforce the hollow plate girder, the longitudinal bending resistance and the transverse integral stress performance of the hollow plate girder bridge can be improved, the hidden danger of the traditional hinge joint cracking and failure can be eliminated, the management and maintenance cost during later-period operation is reduced, and the technical, economic and social benefits are greater.
The surface of hollow core slab 1 still is equipped with bridge deck pavement 9, and 9 inside longitudinal reinforcement 7 and the horizontal reinforcing bar 8 of bridge deck pavement that are equipped with of bridge deck pavement, and bridge deck pavement 9 can protect hollow core slab 1, and inside longitudinal reinforcement 7 and the horizontal reinforcing bar 8 of bridge deck pavement can make 9 overall structure of bridge deck pavement stable.
The hinge joint stirrups 10 are distributed in the hollow plate hinge joint 12 at intervals of 10-12cm, the hinge joint longitudinal reinforcements 11 are arranged at the bottom edge and the quartering positions of the annular inner side of the hinge joint stirrups 10, the hinge joint stirrups 10 and the hinge joint longitudinal reinforcements 11 are uniformly distributed in the hollow plate hinge joint 12, and the hollow plate hinge joint 12 can improve the longitudinal bending resistance and the transverse integral stress performance when stressed, so that the hollow plate hinge joint 12 cannot be easily cracked or directly damaged, the stability of the whole hollow plate beam bridge is improved, and the service life of the bridge is ensured.
The diameters of the hinge joint stirrups 10 and the hinge joint longitudinal steel bars 11 are both 12-16mm, and the large-diameter steel bars can improve the longitudinal bending resistance and the transverse integral stress performance of the hollow slab girder bridge.
Hollow slab hinge joint 12 is accomplishing to hinge joint stirrup 10, the longitudinal reinforcement 11 of hinge joint, pre-buried bellows 4, it is fixed that the anchor district 2 and turn to the fixed back of position of piece 3 are poured through hinge joint concrete, the hinge joint concrete can be pour hollow slab hinge joint 12, thereby make adjacent hollow slab 1 become a whole, and hollow slab hinge joint 12 is inside to add the prestressing force stranded wire and consolidate hollow slab beam, can improve vertical bending resistance and the horizontal whole atress performance of hollow slab beam bridge, can eliminate the disease hidden danger of traditional hinge joint fracture and inefficacy, reduce the management and maintenance cost during the later stage operation.
When the hollow plate hinge joint 12 is fixed through the hinge joint concrete, the hinge joint concrete needs to be positioned in an auxiliary mode through the hollow plate hinge joint template, the hollow plate hinge joint template can be used for positioning the hollow plate hinge joint, the hinge joint concrete can be filled into the hollow plate hinge joint 12, the hinge joint concrete cannot be wasted, and the resource waste is reduced.
The hollow plate hinge joint template is dismantled when the strength of the hinge joint concrete reaches 80%, after the strength of the hinge joint concrete reaches 100%, the steel strand 6 penetrates through the reserved corrugated pipe 4, the hollow plate hinge joint template is dismantled when the strength of the hinge joint concrete reaches 80%, the hollow plate hinge joint template cannot be directly adhered to the surface of the hinge joint concrete, the hollow plate hinge joint template is convenient to dismantle, the steel strand 6 penetrates through the reserved corrugated pipe 4 when the strength of the hinge joint concrete reaches 100%, the reserved corrugated pipe 4 cannot move, the steel strand 6 needs to be pulled through a jack after penetrating is completed, the reserved corrugated pipe is prevented from moving in the pulling process, the hinge joint concrete is loosened, the hinge joint concrete is made useless, and resources of the hinge joint concrete are wasted.
hollow core slab 1 both ends are equipped with hollow core slab chisel and remove part 14, and hollow core slab 1 can produce deckle edge in process of production, and deckle edge just leads to the fact the part with hollow core slab, to the unhairing removal of hollow core slab for hinge seam concrete when pouring hollow core slab, hinge seam concrete can bond adjacent hollow core slab 1 fast, makes it quick fixed, and unnecessary deckle edge can influence its adhesive strength.
The device is characterized in that a prestressed steel strand reinforcing device is additionally arranged in a hollow plate hinge joint space, and when the device is required to be used, the device is shown in figure 1; an operator removes the original bridge deck pavement and hinge joint chiseling part 13 of the hollow slab, and finishes removing the bridge deck pavement and hinge joint chiseling part 13 on the surface of the hollow slab 1, as shown in fig. 2; an operator removes the hollow slab chiseling parts 14 on the two sides of the hollow slab 1 to enable the hollow slab 1 to be a vertical surface, and finishes the original bridge deck pavement of the hollow slab and the removal of the hinge joint chiseling part 13 and the hollow slab chiseling part 14; as shown in fig. 4, after an operator chisels the hollow plate hinge joint 12, the transverse width of the chiseling the hollow plate hinge joint 12 is 20-40cm, after chiseling the hollow plate hinge joint 12, a hinge joint stirrup 10 is arranged in the hollow plate hinge joint 12 at an interval of 10-12cm in the longitudinal direction, the diameter of the hinge joint stirrup 10 is 12-16mm, a hinge joint longitudinal steel bar 11 is arranged at the bottom edge and the quartering position of the annular inner side of the hinge joint stirrup 10, the diameter of the hinge joint longitudinal steel bar is 12-16mm, a corrugated pipe 4 needs to be embedded in the hollow plate hinge joint 12, an anchoring area 2 and a steering block 3 are arranged at the upper end and the lower end of the hollow plate hinge joint 12, after the chiseling, the operator installs a template of the hollow plate hinge joint 12 (when the hollow plate hinge joint 12 is fixed by hinge joint concrete, the hollow plate hinge joint template needs to assist in positioning the hinge joint concrete, the hollow plate hinge joint template can position the hollow plate hinge joint, the method comprises the steps of filling hinge joint concrete into a hollow plate hinge joint 12, so that the hinge joint concrete is not wasted, resource waste is reduced, pouring the hinge joint concrete, removing a template after the concrete strength reaches 80%, penetrating steel strands 6 into an embedded corrugated pipe 4 after the concrete strength reaches 100%, simultaneously tensioning two ends by using a jack, fixing the template in the hollow plate hinge joint 12 by using an anchorage device (removing the hollow plate hinge joint template when the hinge joint concrete strength reaches 80%, so that the hollow plate hinge joint template is not directly adhered to the surface of the hinge joint concrete, facilitating the detachment of the hollow plate hinge joint template, allowing the steel strands 6 to penetrate through the reserved corrugated pipe 4 when the hinge joint concrete strength reaches 100%, not moving the reserved corrugated pipe 4, and pulling two ends of the steel strands 6 through the jack after the penetration is completed, avoiding the reserved corrugated pipe from moving in the pulling process, so that the hinge joint concrete is loosened, the hinge joint concrete is wasted, and the resources of the hinge joint concrete are wasted), and after the arrangement of the internal structure of the hollow plate hinge joint 12 is completed, as shown in fig. 3; the operator lays the bridge deck pavement 9 again, and the inside bridge deck pavement longitudinal reinforcement 7 and the bridge deck pavement horizontal reinforcement 8 of bridge deck pavement 9 are tied up hinge joint stirrup 10 and bridge deck longitudinal reinforcement 7 together, arrange the template and pour the bridge floor concrete, demolish the template after the concrete strength reaches 80%, accomplish the reinforcement construction of hollow slab beam bridge.
A method for reinforcing a prestressed steel strand by utilizing a hollow plate hinge joint space comprises the following steps:
the method comprises the steps of firstly, removing bridge deck pavement and hollow slab hinge joints on the surface of an original hollow slab, chiseling concrete on a web part of the hollow slab to enable the web to be a vertical surface, chiseling the surface of the concrete of the hollow slab, wherein the transverse width range of the chiseled hollow slab hinge joints is 20-40 cm.
And secondly, arranging hinge joint stirrups at intervals of 10-12cm in the longitudinal direction in the hinge joint of the hollow slab, wherein the diameter of the hinge joint stirrups is 12-16mm, hinge joint longitudinal reinforcements are arranged at the bottom edge and the quartering position of the annular inner side of the hinge joint stirrups, the diameter of the hinge joint reinforcements is 12-16mm, and a prestressed pipeline, an anchoring area, anchoring reinforcements and a steering block are required to be reserved (the hinge joint stirrups 10 and the hinge joint longitudinal reinforcements 11 are uniformly distributed in the hinge joint 12 of the hollow slab, so that the longitudinal bending resistance and the transverse overall stress performance of the hinge joint 12 of the hollow slab can be improved when the hinge joint 12 of the hollow slab is stressed, cracks cannot be easily generated in the hinge joint 12 of the hollow slab or the hinge joint 12 of the hollow slab can not be directly damaged, the stability of the whole hollow slab beam.
step three, installing a template of the hollow plate hinge joint, pouring hinge joint concrete, removing the template after the concrete strength reaches 80%, penetrating a steel strand into the pre-embedded corrugated pipe after the concrete strength reaches 100%, simultaneously tensioning the two ends of the steel strand by using a jack, and fixing the steel strand in the hollow plate hinge joint by using an anchorage device (the hollow plate hinge joint template can position the hollow plate hinge joint so that the hinge joint concrete can be quickly filled into the hollow plate hinge joint, thereby preventing the hinge joint concrete from being wasted and reducing the waste of resources, namely, the hollow plate hinge joint template is removed when the hinge joint concrete strength reaches 80%, so that the hollow plate hinge joint template cannot be directly adhered to the surface of the hinge joint concrete, the hollow plate hinge joint template is convenient to detach, the steel strand penetrates through the reserved corrugated pipe when the hinge joint strength reaches 100%, and cannot move the reserved corrugated pipe, and the steel strand wires still need to be pulled to its both ends through the jack after passing and accomplishing, avoids making the reserved bellows produce the removal at the pulling in-process to make hinge joint concrete not hard up, thereby make it useless, waste its resource).
And fourthly, laying the bridge deck pavement longitudinal reinforcing steel bars and the transverse reinforcing steel bars again, binding the hinge joint stirrups with the bridge deck longitudinal reinforcing steel bars together, arranging the templates and pouring bridge deck concrete, removing the templates after the concrete strength reaches 80%, completing the reinforcing construction of the hollow slab beam bridge, binding the hinge joint stirrups with the bridge deck longitudinal reinforcing steel bars together, enabling the hinge joint space and the bridge deck pavement to be integrated, and improving the longitudinal bending resistance and the transverse overall stress performance of the hollow slab beam bridge.
The device makes full use of the hinge joint space to add the prestressed steel hinge to reinforce the hollow slab beam, can improve the longitudinal bending resistance and the transverse integral stress performance of the hollow slab beam bridge, can eliminate the disease hidden danger of the traditional hinge joint cracking and failure, reduces the management and maintenance cost during later operation, and has great technical, economic and social benefits.
finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A prestressed steel strand reinforcing device is additionally arranged in a hollow plate hinge joint space and comprises hollow plates and hollow plate hinge joints, and is characterized in that the hollow plate hinge joints are arranged between the adjacent hollow plates, hinge joint stirrups are uniformly arranged in the hollow plate hinge joints, and hinge joint longitudinal reinforcements are arranged on the inner sides of the hinge joint stirrups;
An embedded corrugated pipe is further arranged inside the hinge joint of the hollow plate, and one end of the embedded corrugated pipe is provided with an anchor steel bar;
The surface of hollow core slab is equipped with the anchor district, the bottom surface of hollow core slab is equipped with turns to the piece, the steel strand wires pass pre-buried bellows.
2. the device for additionally arranging the prestressed steel strand reinforcing device by utilizing the hinge joint space of the hollow plate is characterized in that bridge deck pavement is further arranged on the surface of the hollow plate, and bridge deck pavement longitudinal steel bars and bridge deck pavement transverse steel bars are arranged inside the bridge deck pavement.
3. the device for additionally arranging the prestressed steel strand reinforcing device by utilizing the hinge joint space of the hollow plate according to claim 1, is characterized in that the hinge joint stirrups are distributed at intervals of 10-12cm inside the hinge joint of the hollow plate, and the hinge joint longitudinal steel bars are arranged at the positions of the bottom edge and the quartering point of the annular inner side of the hinge joint stirrups.
4. The device for additionally arranging the prestressed steel strand by utilizing the hinge joint space of the hollow plate according to claim 1, is characterized in that the diameters of the hinge joint stirrup and the hinge joint longitudinal steel bar are both 12-16 mm.
5. The device for additionally arranging the prestressed steel strand reinforcing device by utilizing the hollow plate hinge joint space is characterized in that the hollow plate hinge joint is fixed by pouring hinge joint concrete after the positions of a hinge joint stirrup, a hinge joint longitudinal steel bar, an embedded corrugated pipe, an anchoring area and a steering block are fixed.
6. The device for additionally arranging the prestressed steel strand reinforcing device by utilizing the hinge joint space of the hollow plate according to claim 5, is characterized in that when the hinge joint of the hollow plate is fixed through hinge joint concrete, a hinge joint template of the hollow plate is required to perform auxiliary positioning on the hinge joint concrete.
7. The device for reinforcing the prestressed steel strand by utilizing the hinge joint space of the hollow plate as claimed in claim 6, wherein the hinge joint concrete is used for removing the hinge joint template of the hollow plate when the strength reaches 80%, and the steel strand penetrates through the reserved corrugated pipe after the strength of the hinge joint concrete reaches 100%.
8. The device for reinforcing the prestressed steel strand by utilizing the hinge joint space of the hollow plate as claimed in claim 6, wherein chiseling parts of the hollow plate are arranged at two ends of the hollow plate.
9. The method for reinforcing the prestressed steel strand reinforcing device additionally arranged in the hollow plate hinge joint space based on any one of claims 1 to 8 comprises the following steps of:
removing the bridge deck pavement and the hollow slab hinge joints on the surface of the original hollow slab, chiseling concrete on the web part of the hollow slab to enable the web to be a vertical surface, and chiseling the surface of the concrete of the hollow slab, wherein the transverse width range of the chiseled hollow slab hinge joints is 20-40 cm;
Secondly, laying a hinge joint stirrup in the hinge joint of the hollow plate at intervals of 10-12cm in the longitudinal direction, wherein the diameter of the hinge joint stirrup is 12-16mm, hinge joint longitudinal steel bars are arranged at the bottom edge and the quartering position of the annular inner side of the hinge joint stirrup, the diameter of the hinge joint longitudinal steel bars is 12-16mm, and a prestressed pipeline, an anchoring area, an anchor steel bar and a steering block are required to be reserved;
Thirdly, installing a template of the hinge joint of the hollow plate, pouring hinge joint concrete, removing the template after the strength of the concrete reaches 80%, penetrating a steel strand into the pre-embedded corrugated pipe after the strength of the concrete reaches 100%, simultaneously tensioning two ends of the steel strand by using a jack, and fixing the steel strand in the hinge joint of the hollow plate by using an anchorage device;
And fourthly, laying the bridge deck pavement longitudinal steel bars and the transverse steel bars again, binding the hinge joint stirrups and the bridge deck longitudinal steel bars together, arranging the templates, pouring bridge deck concrete, and removing the templates after the concrete strength reaches 80% to finish the reinforcing construction of the hollow slab beam bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910935951.0A CN110541369A (en) | 2019-09-29 | 2019-09-29 | Device and method for additionally arranging prestressed steel strand in hollow plate hinge joint space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910935951.0A CN110541369A (en) | 2019-09-29 | 2019-09-29 | Device and method for additionally arranging prestressed steel strand in hollow plate hinge joint space |
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| CN110541369A true CN110541369A (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910935951.0A Pending CN110541369A (en) | 2019-09-29 | 2019-09-29 | Device and method for additionally arranging prestressed steel strand in hollow plate hinge joint space |
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| CN (1) | CN110541369A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364376A (en) * | 2020-03-16 | 2020-07-03 | 南京林业大学 | Hollow beam body prestress mixed bending-resistant reinforcing method |
| CN113981829A (en) * | 2021-11-12 | 2022-01-28 | 王壹帆 | Construction method of prestressed concrete tongue-and-groove joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644032A (en) * | 2009-08-31 | 2010-02-10 | 中交通力建设股份有限公司 | Beam-removing rib-increasing strengthening construction technology of highway bridge |
| JP5716117B1 (en) * | 2014-07-10 | 2015-05-13 | 黒沢建設株式会社 | Hinge reinforcement method and reinforcement structure for existing girder bridge |
| CN108374356A (en) * | 2018-05-10 | 2018-08-07 | 山东交通学院 | A kind of old hollow slab bridge of hinge seam longitudinal prestressing reinforcing single hole constructs and construction method |
| CN211312247U (en) * | 2019-09-29 | 2020-08-21 | 辽宁省交通规划设计院有限责任公司 | Prestressed steel strand reinforcing device additionally arranged in hollow plate hinge joint space |
-
2019
- 2019-09-29 CN CN201910935951.0A patent/CN110541369A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644032A (en) * | 2009-08-31 | 2010-02-10 | 中交通力建设股份有限公司 | Beam-removing rib-increasing strengthening construction technology of highway bridge |
| JP5716117B1 (en) * | 2014-07-10 | 2015-05-13 | 黒沢建設株式会社 | Hinge reinforcement method and reinforcement structure for existing girder bridge |
| CN108374356A (en) * | 2018-05-10 | 2018-08-07 | 山东交通学院 | A kind of old hollow slab bridge of hinge seam longitudinal prestressing reinforcing single hole constructs and construction method |
| CN211312247U (en) * | 2019-09-29 | 2020-08-21 | 辽宁省交通规划设计院有限责任公司 | Prestressed steel strand reinforcing device additionally arranged in hollow plate hinge joint space |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364376A (en) * | 2020-03-16 | 2020-07-03 | 南京林业大学 | Hollow beam body prestress mixed bending-resistant reinforcing method |
| CN113981829A (en) * | 2021-11-12 | 2022-01-28 | 王壹帆 | Construction method of prestressed concrete tongue-and-groove joint |
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