CN210177380U - Concrete bridge structure is consolidated in combination of filling material in steel sheet - Google Patents
Concrete bridge structure is consolidated in combination of filling material in steel sheet Download PDFInfo
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- CN210177380U CN210177380U CN201920655274.2U CN201920655274U CN210177380U CN 210177380 U CN210177380 U CN 210177380U CN 201920655274 U CN201920655274 U CN 201920655274U CN 210177380 U CN210177380 U CN 210177380U
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Abstract
The utility model provides a concrete bridge structure is consolidated in combination of filling material in steel sheet, bottom anchor muscle and side anchor muscle are implanted respectively to the bottom surface and the side of the bridge roof beam body, side bending resistance steel sheet, bottom surface bending resistance steel sheet, the U-shaped steel sheet that shears passes through bottom anchor muscle, side anchor muscle is outer hung respectively in the lateral part of the bridge roof beam body, bottom and lateral part and bottom, be equipped with the cavity in the perpendicular distance not less than 10mm space between its and the surface of the bridge roof beam body, fill in the cavity and fill up the filler, side bending resistance steel sheet, bottom surface bending resistance steel sheet, the U-shaped steel sheet that shears passes through bottom anchor muscle, side anchor muscle and filler and bridge roof beam body group closes as an organic wholely jointly. The utility model discloses mainly solve the defect of current steel sheet of pasting and increase cross-section reinforcement technique, simple process, with low costs can satisfy the reinforcement demand of concrete bridge structure.
Description
Technical Field
The utility model relates to a bridge reinforced structure, especially a concrete bridge structure is consolidated in combination of filler material is filled in steel sheet belongs to civil engineering technical field.
Background
Nearly one million bridges have been built in China, and after years of operation, the built bridges gradually show different structural defects, such as continuous expansion of bridge cracks and continuous accumulation of damages, so that the bearing capacity is gradually reduced, and the section rigidity is continuously reduced. In addition, along with the development of the transportation industry, the bearing requirement of the bridge is larger and larger, the load grade of a part of routes needs to be improved urgently, the original design bearing capacity of the corresponding bridge cannot meet the requirement, and the safety performance of the bridge is seriously influenced. Therefore, the reinforcement and repair of bridges have become a technical problem which must be faced in the field of bridge maintenance.
For reinforced concrete bridges, in the currently common reinforcement technology, a cross section increasing reinforcement technology is used for increasing the size of the cross section of a beam body by erecting a template at the bottom of a concrete beam on site and pouring materials such as mortar and concrete, so that the bearing capacity of the concrete beam is improved, and a steel plate is adhered to a stressed part of the concrete beam by structural adhesive by a steel plate adhesion reinforcement technology. The reinforcing technology for the enlarged cross section and the reinforcing technology for the pasted steel plate are developed into two most commonly used reinforcing technologies due to the fact that material sources are simple and the process is easy to master, the reinforcing technology for the enlarged cross section can effectively improve the rigidity and the bearing capacity of the cross section, and the reinforcing technology for the pasted steel plate can effectively improve the bearing capacity of the cross section. However, the technique of reinforcing the enlarged cross section and the technique of reinforcing the adhered steel plate have corresponding disadvantages.
For example, in a T-beam reinforcing device suitable for super-strong high-toughness resin concrete (application No. 201721274880.7), the section of a tension area is enlarged by pouring super-strong high-toughness resin concrete, and the method has the disadvantages that the bottom of a part of a bridge is not beneficial to arranging a template, the operation is difficult to realize on site, and the sheared area of the concrete beam is not effectively reinforced; further, as shown in the chinese patent "reinforced concrete beam bonded steel plate pressure fixing device and reinforcing method" (application No. 201410751540.3), the pressure fixing device is adopted, so that when the steel plate is bonded, the steel plate is in close contact with the bottom surface of the concrete beam, and the disadvantages are that peeling between the steel plate and the concrete beam is likely to occur, structural adhesive has poor high temperature resistance and frost resistance, and under the action of a complex environment, the steel plate is still peeled off, the reinforcing effect is lost, and bending, shearing and reinforcing are isolated.
Disclosure of Invention
The utility model discloses mainly solve and to paste the steel sheet now, increase cross-section reinforcement technique steel sheet and drop easily, be difficult to defects such as support template, carry out the physics with the steel sheet through stock, mortar and concrete beam and be connected, use the steel sheet as the template simultaneously, realize the reinforcement effect of increase cross-section and pasting the steel sheet.
The technical scheme of the utility model is that: a concrete bridge structure reinforced by filling material combination in steel plates is characterized in that bottom anchoring ribs and side anchoring ribs are respectively embedded in the bottom surface and the side surface of a bridge body, a side bending-resistant steel plate, a bottom bending-resistant steel plate and a shear-resistant U-shaped steel plate are respectively hung on the side part, the bottom part, the side part and the bottom part of the bridge body through the bottom anchoring ribs and the side anchoring ribs, the side bending-resistant steel plate, the bottom bending-resistant steel plate and the shear-resistant U-shaped steel plate are mutually spliced to form a reinforced steel plate integrally, a cavity with a vertical distance of not less than 10mm is arranged between the side bending-resistant steel plate, the bottom bending-resistant steel plate and the shear-resistant U-shaped steel plate and the outer surface of the bridge body, the side bending-resistant steel plate and the bottom bending-resistant steel plate are arranged along the length direction of the bridge body, and the two side bending-resistant steel plates, the height of arranging of side bending resistance steel sheet is 1/15 ~ 1/3 from the bottom surface of bridge girder body to the height of bridge girder body, the U-shaped steel sheet that shears is the U-shaped shape, arrange that the bridge girder body is located the support and strides in no longer than 1/4 span region, the side height of the U-shaped steel sheet that shears is not less than 2/3 of bridge girder body height, its bottom surface width is equal to the width of bottom surface bending resistance steel sheet, fill in the cavity and fill up the filler, side bending resistance steel sheet, bottom surface bending resistance steel sheet, the U-shaped steel sheet that shears passes through bottom anchor muscle, side anchor muscle and filler and bridge girder body combine as an organic whole jointly.
The bridge girder body be reinforced concrete structure, bottom anchor muscle perpendicular to bridge girder body's bottom surface, side anchor muscle perpendicular to bridge girder body's side, it is respectively through structural adhesive or anchor mortar anchor in the anchor hole of bridge girder body, vertical, the longitudinal interval of arranging is 100 ~ 1000mm, the anchor degree of depth is not less than 5 times of its diameter, bottom anchor muscle, side anchor muscle pass the preformed hole of consolidating the steel sheet, and expose the end and be equipped with the screw thread and screw up supporting nut.
The plane of the bottom surface bending-resistant steel plate is parallel to the bottom surface of the bridge body, and the plane of the side surface bending-resistant steel plate is parallel to the side surface of the bridge body.
The filler is one of concrete, mortar and epoxy mortar, and one or more of steel fibers, polypropylene fibers, basalt fibers, carbon fibers, glass fibers and plant fibers are added into the filler.
The utility model provides a concrete bridge structure is consolidated in combination of filling material in steel sheet passes through drilling, installation anchor, fixed reinforcement steel sheet, shutoff end, fills filler and maintenance protection, realizes consolidating the combination of filling material in the steel sheet of bridge girder body, specifically includes following step:
1) drilling: and respectively drilling anchoring holes corresponding to the bottom anchoring ribs and the side anchoring ribs into the bottom surface and the side surface of the bridge body.
2) Installing an anchoring device: and (2) respectively implanting bottom anchoring ribs and side anchoring ribs into the anchoring holes in the bottom surface and the side surface of the bridge body through structural adhesive or anchoring mortar, wherein the vertical and longitudinal arrangement distance of the bottom anchoring ribs and the side anchoring ribs is 100-1000 mm, and the anchoring depth is not less than 5 times of the diameter of the bottom anchoring ribs and the side anchoring ribs.
3) Fixing and reinforcing steel plates: the side bending-resistant steel plate, the bottom surface bending-resistant steel plate, the U-shaped steel plate that shears pass through bottom anchor muscle, side anchor muscle is hung in the lateral part of the bridge roof beam body respectively outward, bottom and lateral part and bottom, side bending-resistant steel plate, bottom surface bending-resistant steel plate, the U-shaped steel plate that shears splices each other and forms the reinforcement steel sheet as whole each other, be equipped with the cavity in vertical distance not less than 10mm space between the surface of reinforcement steel sheet and the bridge roof beam body, bottom anchor muscle, side anchor muscle pass the preformed hole of reinforcing the steel sheet, and expose the end and be equipped with the screw thread and screw up supporting nut.
4) End plugging: and the end heads at two ends of the cavity between the reinforcing steel plate and the outer surface of the bridge girder body are plugged by a template or filler.
5) Filling the filler: filling material is poured into a cavity between the reinforced steel plate and the outer surface of the bridge body, the filling material is one of concrete, mortar and epoxy mortar, and one or more of steel fiber, polypropylene fiber, basalt fiber, carbon fiber, glass fiber and plant fiber is added into the filling material.
6) Maintenance and protection: and curing the filler, and protecting the anchoring device 2 and the reinforced steel plate after the filler forms strength.
The bridge body is of a reinforced concrete structure, the side bending-resistant steel plates and the bottom bending-resistant steel plates are arranged in a whole length mode along the length direction of the bridge body, the two side bending-resistant steel plates are vertically lapped on the two ends of the width direction of one bottom bending-resistant steel plate on the cross section to form a U-shaped shape, the arrangement height of the side bending-resistant steel plates is 1/15-1/3 from the bottom surface of the bridge body to the height of the bridge body, the anti-shearing U-shaped steel plates are U-shaped and are arranged in a region, located in a support and a span, of the bridge body and not more than 1/4 span, the height of the side of each anti-shearing U-shaped steel plate is not less than 2/3 of the height of.
The utility model overcomes the steel sheet of traditional steel sheet of pasting, increase cross-section reinforcement method easily peels off, the construction difficulty is set up to the template, and is bent, cut the reinforcement isolated, has following beneficial effect:
(1) the steel plate is used as a template and anchored on the concrete bridge girder body, so that the construction process of the traditional bracket erection template is simplified.
(2) The reinforced steel plate is fixedly integrated with the bridge body through the bottom anchoring ribs, the side anchoring ribs and the filler, so that an integrated combined structure of the reinforced steel plate and concrete is formed, and the bearing capacity and the rigidity of the structure are greatly improved.
(3) The bottom anchoring ribs and the side anchoring ribs are equivalent to shear connectors between the reinforced steel plate and the reinforced structure concrete, so that the shear force between the reinforced steel plate and the concrete is effectively transmitted, and the peeling damage of the steel plate is avoided.
(4) The filling material adopts concrete, mortar or epoxy mortar and the like, the cross section size is increased, structural glue is avoided, and the manufacturing cost is effectively reduced.
(5) The side bending-resistant steel plates, the bottom bending-resistant steel plates and the shear-resistant U-shaped steel plates are spliced into a whole to form the reinforced steel plate, the bending resistance reinforcement and the shear resistance reinforcement are effectively unified, and the common problem that the side bending-resistant steel plates and the bottom bending-resistant steel plates are easily stripped when the common bonded steel plates are used for reinforcing the side bending-resistant steel plates and the bottom bending-resistant steel plates is further.
Description of the drawings:
the drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention.
FIG. 1 is a complete three-dimensional structure of a concrete bridge structure reinforced by a combination of filling materials filled in steel plates;
FIG. 2 is a reinforced section of a flexural area of a concrete bridge structure reinforced by a combination of filling materials filled in steel plates;
FIG. 3 is a reinforced section of a sheared area of a reinforced concrete bridge structure combined with a filler filled in a steel plate;
FIG. 4 is a flow chart of a construction technique for reinforcing a concrete bridge structure by a combination of filling materials filled in steel plates;
FIG. 5 is a schematic illustration of a drilled hole in a bridge beam for a steel plate filled concrete reinforced concrete bridge construction;
FIG. 6 is a schematic view of an installation anchoring device for reinforcing a concrete bridge structure by a combination of a filling material filled in a steel plate;
FIG. 7 is a schematic view of a fixed reinforced steel plate of a concrete bridge structure reinforced by a combination of a filler filled in the steel plate;
FIG. 8 is a schematic view of a plugging tip of a concrete bridge structure reinforced by a combination of a steel plate and a filling material;
FIG. 9 is a schematic view of a filling material for reinforcing a concrete bridge structure by the combination of the filling material in a steel plate;
FIG. 10 is a schematic view of the maintenance and protection of a concrete bridge structure reinforced by the combination of the filling materials filled in the steel plates.
In the attached drawings, 100 is a bridge body; 11 is a bottom anchoring rib; 12 is a side anchoring rib; 2 is a screw cap; 31 is a side bending-resistant steel plate; 32 is a bottom bending-resistant steel plate; 33 is a shear resistant U-shaped steel plate; 3, a reinforced steel plate; 4 is filler.
The specific implementation mode is as follows:
in order to clearly understand the technical features, objects and effects of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings, but the scope of the present invention is not limited to the following specific embodiments.
As shown in the attached drawings, a concrete bridge structure reinforced by steel plate inner filling material combination is characterized in that bottom anchor bars 11 and side anchor bars 12 are respectively embedded into the bottom surface and the side surface of a bridge body 100, a side bending-resistant steel plate 31, a bottom bending-resistant steel plate 32 and a shear-resistant U-shaped steel plate 33 are respectively hung outside the side part, the bottom part, the side part and the bottom part of the bridge body 100 through the bottom anchor bars 11 and the side anchor bars 12, the side bending-resistant steel plate 31, the bottom bending-resistant steel plate 32 and the shear-resistant U-shaped steel plate 33 are spliced into a whole to form a reinforced steel plate 3, a cavity with a vertical distance not less than 10mm is arranged between the side bending-resistant steel plate 31, the bottom bending-resistant steel plate 32 and the outer surface of the bridge body 100, the side bending-resistant steel plate 31 and the bottom bending-resistant steel plate 32 are arranged along the length direction of the bridge body 100, two side bending-resistant steel plates 31 are vertically lapped on the two ends, the height of arranging of side bending-resistant steel plate 31 is 1/15 ~ 1/3 from the bottom surface of bridge girder body 100 to the height of bridge girder body 100, the U-shaped steel plate 33 that shears is the U-shaped form, arrange that bridge girder body 100 is located the support and strides in no longer than 1/4 span region, the side height of the U-shaped steel plate 33 that shears is not less than the 2/3 of bridge girder body 100 height, its bottom surface width is equal to the width of bottom bending-resistant steel plate 32, fill in the cavity and fill up filler 4, side bending-resistant steel plate 31, bottom bending-resistant steel plate 32, the U-shaped steel plate 33 that shears passes through bottom anchor muscle 11, side anchor muscle 12 and filler 4 are as an organic whole jointly with bridge girder body 100.
The bridge girder body 100 be reinforced concrete structure, bottom anchor muscle 11 is perpendicular to the bottom surface of bridge girder body 100, side anchor muscle 12 is perpendicular to the side of bridge girder body 100, it is anchored in the anchor hole 101 of bridge girder body 100 respectively through structural adhesive or anchor mortar, vertical, the longitudinal interval of arranging is 100 ~ 1000mm, the anchor degree of depth is not less than 5 times of its diameter, bottom anchor muscle 11, side anchor muscle 12 pass the preformed hole of reinforcing steel sheet 3, and expose the end and be equipped with the screw thread and screw up supporting nut 2.
The plane of the bottom bending-resistant steel plate 32 is parallel to the bottom of the bridge beam body 100, and the plane of the side bending-resistant steel plate 31 is parallel to the side of the bridge beam body 100.
The filling material 4 is one of concrete, mortar and epoxy mortar, and one or more of steel fiber, polypropylene fiber, basalt fiber, carbon fiber, glass fiber and plant fiber is added in the filling material.
The utility model provides a concrete bridge structure is consolidated in combination of filling material in steel sheet passes through drilling, installation anchor, fixed reinforcement steel sheet, shutoff end, fills filler and maintenance protection, realizes consolidating the combination of filling material in the steel sheet of bridge girder body, specifically includes following step:
1) drilling: anchoring holes 101 corresponding to the bottom anchoring ribs 11 and the side anchoring ribs 12 are bored into the bottom surface and the side surface of the bridge beam 100, respectively.
2) Installing an anchoring device: the bottom anchoring ribs 11 and the side anchoring ribs 12 are respectively implanted into the anchoring holes 101 in the bottom surface and the side surface of the bridge body 100 through structural glue or anchoring mortar, the vertical and longitudinal arrangement distance of the bottom anchoring ribs and the side anchoring ribs is 100-1000 mm, and the anchoring depth is not less than 5 times of the diameter of the bottom anchoring ribs and the side anchoring ribs.
3) Fixing and reinforcing steel plates: the side bending-resistant steel plate 31, the bottom bending-resistant steel plate 32 and the shear-resistant U-shaped steel plate 33 are respectively hung on the side part, the bottom part, the side part and the bottom part of the bridge girder 100 in an external mode through the bottom anchoring rib 11 and the side anchoring rib 12, the side bending-resistant steel plate 31, the bottom bending-resistant steel plate 32 and the shear-resistant U-shaped steel plate 33 are spliced into a whole to form a reinforced steel plate 3, a cavity with a vertical distance not smaller than 10mm of a gap is arranged between the reinforced steel plate 3 and the outer surface of the bridge girder 100, the bottom anchoring rib 11 and the side anchoring rib 12 penetrate through a reserved hole of the reinforced steel plate 3, and an exposed end.
4) End plugging: the two end heads of the cavity between the reinforcing steel plate 3 and the outer surface of the bridge girder 100 are plugged by a template or filler.
5) Filling the filler: and filling materials 4 are poured into a cavity between the reinforced steel plate 3 and the outer surface of the bridge girder 100, wherein the filling materials 4 are one of concrete, mortar and epoxy mortar, and one or more of steel fibers, polypropylene fibers, basalt fibers, carbon fibers, glass fibers and plant fibers are added into the filling materials 4.
6) Maintenance and protection: and curing the filling material 4, and protecting the screw cap 2 and the reinforced steel plate 3 after the filling material 4 forms strength.
The bridge body 100 is of a reinforced concrete structure, the side bending-resistant steel plates 31 and the bottom bending-resistant steel plates 32 are arranged along the length direction of the bridge body 100 in a whole length mode, the two side bending-resistant steel plates 31 are vertically lapped on the two ends of the width direction of one bottom bending-resistant steel plate 32 on the cross section to form a U shape, the arrangement height of the side bending-resistant steel plates 31 is 1/15-1/3 from the bottom surface of the bridge body 100 to the height of the bridge body 100, the shear-resistant U-shaped steel plates 33 are U-shaped and are arranged in a region, located in a support and a span, of the bridge body 100 and not more than 1/4 span, the height of the side surfaces of the shear-resistant U-shaped steel plates 33 is not less than 2/3 of the height of the bridge body 100.
Claims (4)
1. A concrete bridge structure reinforced by a steel plate inner filling material combination is characterized in that bottom anchoring ribs (11) and side anchoring ribs (12) are respectively embedded into the bottom surface and the side surface of a bridge body (100), a side bending-resistant steel plate (31), a bottom bending-resistant steel plate (32) and a shear-resistant U-shaped steel plate (33) are respectively hung outside the side part, the bottom part, the side part and the bottom part of the bridge body (100) through the bottom anchoring ribs (11) and the side anchoring ribs (12), the side bending-resistant steel plate (31), the bottom bending-resistant steel plate (32) and the shear-resistant U-shaped steel plate (33) are spliced into a whole to form a reinforced steel plate (3), a cavity with a vertical distance not less than 10mm of a gap is arranged between the side bending-resistant steel plate (31), the bottom bending-resistant steel plate (32) and the outer surface of the bridge body (100), the side bending-resistant steel plate (31) and the bottom bending-resistant steel plate (32) are arranged, two side bending-resistant steel plates (31) are vertically lapped on two ends of a bottom bending-resistant steel plate (32) in the width direction on the cross section to form a U-shaped shape, the arrangement height of the side bending-resistant steel plates (31) is 1/15-1/3 from the bottom of a bridge body (100) to the height of the bridge body (100), a shear-resistant U-shaped steel plate (33) is U-shaped and is arranged in a region, located in a support and midspan, of the bridge body (100) and not more than 1/4 span, the side height of the shear-resistant U-shaped steel plate (33) is not less than 2/3 of the height of the bridge body (100), the width of the bottom surface of the anti-bending steel plate is equal to that of the bottom surface anti-bending steel plate (32), the filling material (4) is filled in the cavity, and the side anti-bending steel plate (31), the bottom anti-bending steel plate (32) and the anti-shearing U-shaped steel plate (33) are combined with the bridge body (100) into a whole through the bottom anchoring ribs (11), the side anchoring ribs (12) and the filling material (4).
2. The steel plate filling material combined reinforced concrete bridge structure as claimed in claim 1, wherein the bridge body (100) is a reinforced concrete structure, the bottom anchoring ribs (11) are perpendicular to the bottom surface of the bridge body (100), the side anchoring ribs (12) are perpendicular to the side surfaces of the bridge body (100), the side anchoring ribs are anchored in the anchoring holes (101) of the bridge body (100) respectively through structural glue or anchoring mortar, the arrangement distance in the vertical direction and the longitudinal direction is 100-1000 mm, the anchoring depth is not less than 5 times of the diameter of the side anchoring ribs, the bottom anchoring ribs (11) and the side anchoring ribs (12) penetrate through the reserved holes of the reinforced steel plate (3), and the exposed ends are provided with threads and are screwed with matched nuts (2).
3. The concrete bridge structure reinforced by the combination of steel plate and filler according to claim 1, wherein the plane of the bottom anti-bending steel plate (32) is parallel to the bottom surface of the bridge body (100), and the plane of the side anti-bending steel plate (31) is parallel to the side surface of the bridge body (100).
4. The steel plate infill-in-steel filler combined reinforced concrete bridge structure according to claim 1, wherein said filler (4) is one of concrete, mortar, epoxy mortar.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086457A (en) * | 2021-11-12 | 2022-02-25 | 重庆交通大学 | Reinforced T-shaped beam bridge and reinforcing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086457A (en) * | 2021-11-12 | 2022-02-25 | 重庆交通大学 | Reinforced T-shaped beam bridge and reinforcing method thereof |
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Assignee: BEIJING JIUTONGQU TESTING TECHNOLOGY Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020320000367 Denomination of utility model: A kind of steel plate filling material combination strengthening concrete bridge structure Granted publication date: 20200324 License type: Common License Record date: 20201212 Assignee: Zhenjiang Heng An Civil Technology Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020320000368 Denomination of utility model: A kind of steel plate filling material combination strengthening concrete bridge structure Granted publication date: 20200324 License type: Common License Record date: 20201212 Assignee: Hefei Shuang Dao run Highway Engineering Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020320000366 Denomination of utility model: A kind of steel plate filling material combination strengthening concrete bridge structure Granted publication date: 20200324 License type: Common License Record date: 20201212 |
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