CN114000442B - Simply supported girder bridge reinforcing structure and reinforcing method thereof - Google Patents
Simply supported girder bridge reinforcing structure and reinforcing method thereof Download PDFInfo
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- CN114000442B CN114000442B CN202111329311.9A CN202111329311A CN114000442B CN 114000442 B CN114000442 B CN 114000442B CN 202111329311 A CN202111329311 A CN 202111329311A CN 114000442 B CN114000442 B CN 114000442B
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000005728 strengthening Methods 0.000 claims description 13
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 2
- 230000001174 ascending effect Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000003466 welding Methods 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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
- E01D2101/32—Metal prestressed
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a simple supporting beam bridge reinforcing structure and a reinforcing method thereof, wherein a bridge plate is erected between the caps of two bridge decks of the original simple supporting beam bridge structure, the reinforcing structure comprises a reinforced corrugated top plate and corrugated plate bearing platforms, the two groups of corrugated plate bearing platforms are respectively arranged below the caps at two sides, the reinforced corrugated roof is not fixedly arranged between the two groups of corrugated plate bearing platforms in a crossing mode, the reinforced corrugated roof is bent upwards to form an arch structure, a pressure-resistant block is arranged at the top of the reinforced corrugated roof, and the upper end face of the pressure-resistant block is connected with the lower end of the bridge plate. The girder bridge reinforcing structure generates prestress through the arched reinforcing corrugated top plate which is bent upwards, and the reinforcing corrugated top plate provides an upward stable supporting force for the bridge plate through the pressure-resistant block, so that the old bridge and the dangerous bridge are reinforced, the problems of sinking, cracking and the like of the old bridge and the dangerous bridge body are solved, the bending and shearing bearing capacity of the bridge is improved, and the reinforcing effect is obvious.
Description
Technical Field
The invention relates to the technical field of beam bridge load lifting and reinforcement, in particular to a simple support beam bridge reinforcing structure and a reinforcing method thereof.
Background
The simple girder bridge is a girder bridge with two ends respectively supported on the abutment as a main bearing structure, and belongs to a statically indeterminate structure. Is the earliest and most widely used bridge form of beam bridges. The beam bridge is suitable for various geological conditions, has simple structure, is easy to manufacture into standardized and assembled components, is convenient to manufacture and install, and is the most widely adopted beam bridge.
As traffic pressure is gradually increased and the service life of the existing bridge is continuously improved, a large number of old bridges and dangerous bridges appear in a large number of simply supported bridges on roads and local roads in China, and the defects of poor durability, cracks, single plates, surface defects, serious bridge deck pavement damage, freeze thawing damage, sinking bridge heads, wing wall outer drums, pier flushing, foundation hollowing and the like are found through investigation on different types of diseases of the bridge, the most common diseases are found, so that the driving comfort is reduced, the direct damage effect of vehicles on bridge structures is more serious, and serious accidents such as vehicle out of control, bridge collapse and the like are directly caused when serious.
Therefore, the maintenance and reinforcement of the simply supported girder bridge gradually become hot spots, the number of bridge groups needing reinforcement and bearing capacity improvement is increased increasingly, most of the reinforcement methods in the prior art only can unilaterally stabilize the bearing capacity of the bridge to live load, and the method has no help to the girder body to resist dead weight and increase bearing capacity; what is needed is a reinforcing structure for a simply supported girder bridge, which is convenient and reliable for reinforcing the existing bridge.
Disclosure of Invention
The invention provides a simple girder bridge reinforcing structure and a reinforcing method thereof, which solve the problems of complex reinforcing structure, high construction difficulty, low reinforcing strength and the like in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
The utility model provides a simple supporting beam bridge reinforced structure, erects the bridge slab between the table cap of two abutment of original simple supporting beam bridge structure, reinforced structure is including strengthening ripple roof and buckled plate cushion cap, and two sets of buckled plate cushion caps set up respectively in both sides table cap below, and not fixed the striding between two sets of buckled plate cushion caps establish the reinforcing ripple roof, the reinforcing ripple roof is the arch structure, and the top of reinforcing ripple roof sets up the pressure-resistant piece, and the pressure-resistant piece up end meets with the lower extreme of bridge slab.
Further, the buckled plate cushion cap includes vertical connecting plate, accepts the buckled plate and consolidates expansion bolts, accept the buckled plate and tilt up the central authorities of fixing at vertical connecting plate, vertical connecting plate consolidates expansion bolts through the multiunit and is connected with abutment lateral wall, consolidates the ripple roof and stride and locate between two sets of buckled plates of accepting.
Further, a plurality of triangular support reinforcing blocks are arranged on the vertical connecting plate below the bearing corrugated plate.
Further, the corrugated plate bearing platform is a platform groove formed in the side wall of the bridge abutment, a limiting piece is arranged in the platform groove, and two unfixed ends of the reinforced corrugated plate are arranged in an installation groove formed by the platform groove and the limiting piece.
Furthermore, the whole pressure-resistant block is of a rectangular structure, the upper end face of the pressure-resistant block is horizontal and is tightly attached to the lower end face of the bridge plate, the lower end face of the pressure-resistant block is an arc face with a corrugated structure, and the pressure-resistant block is tightly attached to the upper end face of the reinforced corrugated top plate; the pressure-resistant block is quick setting pressure-resistant block, rubber pressure-resistant block or concrete pressure-resistant block.
Furthermore, the height of the support replacement space formed by the reinforced corrugated top plate and the two ends of the bridge plate is not less than 0.5m.
Bridge plate is erect between the abutment cap of two abutment of original simply supported girder bridge structure to bridge reinforcing structure, a serial communication port, reinforcing structure includes two sets of ripple riser of strengthening and consolidates ripple roof, and two sets of ripple riser of strengthening anchor respectively on the abutment lateral wall of both sides, connects in the upper end of strengthening ripple riser and accepts ripple angle steel, and the two sets of not fixed straddling of accepting between the ripple angle steel establish the ripple roof of strengthening, and the ripple roof of strengthening is the arch structure, and the top of strengthening the ripple roof sets up the pressure-resistant piece, and the pressure-resistant piece up end meets with the lower extreme of bridge plate.
Further, a grouting space is reserved between the reinforcing corrugated vertical plate and the side wall of the bridge abutment, grouting holes are formed in the reinforcing corrugated vertical plate, and concrete mortar is poured in the grouting space.
Furthermore, the whole pressure-resistant block is of a rectangular structure, the upper end face of the pressure-resistant block is horizontal and is tightly attached to the lower end face of the bridge plate, the lower end face of the pressure-resistant block is an arc face with a corrugated structure, and the pressure-resistant block is tightly attached to the upper end face of the reinforced corrugated top plate; the pressure-resistant block is quick setting pressure-resistant block, rubber pressure-resistant block or concrete pressure-resistant block; the height of the support replacement space formed by the reinforced corrugated top plate and the two ends of the bridge plate is not less than 0.5m.
The simple girder bridge reinforcing method comprises the following steps:
the bridge plate of the original simply supported girder bridge leaves the bridge abutment through a crane or a jack;
A reinforced corrugated top plate is not fixedly arranged between bridge decks at two sides in a crossing way, a pressure-resistant block is arranged at the upper end of the reinforced corrugated top plate, and the reinforced corrugated top plate is bent upwards to form an arch structure;
The bridge plate is placed back to the bridge abutment through the crane or the jack, and the reinforced corrugated plate provides an upward supporting force for the bridge plate through the pressure-resistant block.
Compared with the prior art, the invention has the following beneficial effects:
1. The girder bridge reinforcing structure has no burden on the dead weight of the bridge, prestress is generated by the upward bending arched reinforcing corrugated top plate, and the reinforcing corrugated top plate provides an upward stable supporting force for the bridge plate through the pressure-resistant block, so that the old bridge and the dangerous bridge are reinforced, the problems of sinking, cracking and the like of the bridge body of the old bridge and the dangerous bridge are solved, the bending-resistant shearing-resistant bearing capacity of the bridge is improved, and the reinforcing effect is obvious.
2. The girder bridge reinforcing structure transmits the supporting force with larger area to the bridge plate through the pressure-resistant block, so that the problem of deformation of the reinforced corrugated top plate and the bridge plate caused by point stress is solved, the crack development of the girder bridge under the overload effect is prevented, and the service life of the reinforcing structure is prolonged.
3. According to the invention, the integral reinforcing structure for reinforcing the corrugated roof and the corrugated riser is arranged, the bridge abutment on two sides is reinforced by the corrugated riser and the concrete mortar, and the bridge plate is reinforced and lifted by the corrugated roof, so that the load of the old simply supported bridge is reduced in all directions, and the bridge reinforcing effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other embodiments of the drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a perspective view of FIG. 1;
FIG. 3 is an enlarged schematic view at A of FIG. 2;
FIG. 4 is an enlarged schematic view at B of FIG. 2;
FIG. 5 is a schematic view of the installation of a corrugated deck with a reinforced corrugated roof;
FIG. 6 is a schematic structural view of a pressure resistant block;
Fig. 7 is a schematic structural view of embodiment 3;
FIG. 8 is a schematic view of the installation of a reinforced corrugated riser and reinforced corrugated roof;
FIG. 9 is a schematic view of a structure for receiving corrugated angle steel;
In the figure, 1-bridge abutment, 2-deck cap, 3-bridge plate, 4-bridge support, 5-reinforced corrugated roof, 501-corrugated steel plate, 6-pressure-resistant block, 7-corrugated plate bearing platform, 701-vertical connecting plate, 702-bearing corrugated plate, 703-reinforced expansion bolt, 704-triangular support reinforcing block, 8-support replacement space, 9-reinforced corrugated vertical plate, 10-bearing corrugated angle steel and 11-concrete mortar.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The basic idea of the invention is to design a simple girder bridge reinforcing structure, and the reinforcing corrugated top plate which is bent upwards to form an arch structure provides an upward stable supporting force for the bridge plate of the simple girder bridge, so that the reinforcement of an old bridge and a dangerous bridge, the sinking of the bridge plate and the central cracking are realized.
Example 1:
Referring to fig. 1, a bridge reinforcing structure of a simply supported girder bridge is provided, wherein a bridge plate 3 is erected between caps 2 of two bridge decks 1 of the original simply supported girder bridge structure, a bridge support 4 is arranged between the bridge plate 3 and the caps 2, the reinforcing structure comprises a reinforced corrugated roof plate 5 and corrugated plate bearing platforms 7, two groups of corrugated plate bearing platforms 7 are respectively arranged below the caps 2 on two sides, a reinforced corrugated roof plate 5 is not fixedly arranged between the two groups of corrugated plate bearing platforms 7 in a crossing manner, the reinforced corrugated roof plate 5 is bent upwards to form an arch structure, a pressure-resistant block 6 is arranged at the top of the reinforced corrugated roof plate 5, the upper end face of the pressure-resistant block 6 is in contact with the lower end of the bridge plate 3, and the reinforced corrugated roof plate 5 provides an upward supporting force for the bridge plate 3 through the pressure-resistant block 6.
Referring to fig. 2, the corrugated plate bearing platform 7 includes a vertical connection plate 701, a receiving corrugated plate 702 and a plurality of reinforcing expansion bolts 703, the vertical connection plate 701 is a rectangular steel plate, the receiving corrugated plate 702 is slightly inclined upwards, the vertical connection plate 701 is fixed at the center of the vertical connection plate 701 by bolts or high-strength welding, the vertical connection plate 701 is connected with the side wall of the bridge abutment 1 by an upper row of reinforcing expansion bolts 703 and a lower row of reinforcing expansion bolts, and the reinforcing corrugated top plate 5 is arranged between the two groups of receiving corrugated plates 702 in a crossing manner. The cambered surface of the reinforced corrugated roof plate 5 and two ends of the bridge plate 3 form a support replacing space 8 for workers to drill into the periodic replacement bridge support 4 after the bridge reinforcement engineering is finished, so that the height of the support replacing space 8 is not less than 0.5m. It should be noted that, the wave form of the receiving corrugated plate 702 is the same as the wave form of the reinforcing corrugated plate 5, so that the fixing corrugated plate 5 is better matched with the peak valley of the receiving corrugated plate 702, and the fixing corrugated plate 5 is not easy to move transversely.
Referring to fig. 4, in the present embodiment, the reinforced corrugated roof panel 5 is connected or welded by hot dip galvanized high strength bolts after being sequentially stacked by a plurality of corrugated steel plates 501; in other embodiments, flanges may be disposed around the corrugated steel plate 501, and the reinforced corrugated roof plate 5 is bolted or welded to the flanges around the corrugated steel plate 501.
In this embodiment, the wall thickness of the corrugated steel plate 501 ranges from 2.5mm to 12mm, the wave pitch and wave height options include 380mm and 140mm, 150mm and 50mm, 200mm and 55mm, 230mm and 64mm, 300mm and 110mm or 400mm and 150mm, and the steel plate material includes Q345, Q235 or Q355.
Referring to fig. 3 and 5, in order to strengthen the strength of the corrugated plate 702, the corrugated plate 702 is prevented from bending or deforming downwards under the load, and a plurality of triangular support reinforcing blocks 704 are arranged on the vertical connection plate 701 below the corrugated plate 702.
Referring to fig. 6, the pressure-resistant block 6 is of a rectangular structure as a whole, which is as wide as the reinforcing corrugated roof plate 5; the upper end face of the pressure-resistant block 6 is horizontal and can be tightly attached to the lower end face of the bridge plate 3, the lower end face is an arc face with a corrugated structure and is tightly attached to the upper end face of the reinforced corrugated top plate 5; in this embodiment, the pressure-resistant block 6 is a quick setting pressure-resistant block. In other embodiments, the pressure-resistant block 6 may be a rubber pressure-resistant block or a concrete pressure-resistant block.
The method for reinforcing the simply supported girder bridge of the embodiment comprises the following steps:
step 1, enabling a bridge plate of an original simply supported girder bridge to leave a bridge abutment through a crane or a jack;
Step 2, a reinforced corrugated top plate is not fixedly arranged between bridge decks at two sides in a crossing way, a pressure-resistant block is arranged at the central position of the upper end of the reinforced corrugated top plate, the reinforced corrugated top plate is bent upwards to form an arch structure, and the highest point of the reinforced corrugated top plate is higher than a supporting surface formed by caps at two sides;
Step 3, leveling the bridge plate, slowly placing the bridge plate back to the table caps of the bridge abutments at two sides through a crane or a jack, and driving the reinforced corrugated plate to deform downwards by the pressure-resistant block, wherein the reinforced corrugated plate can provide an upward supporting force for the bridge plate through the pressure-resistant block.
Before the step 3, according to the specific condition of the bridge support, the support cushion stone base groove can be polished and leveled, the support cushion stone is placed, and then the rubber bridge support is placed.
Example 2:
A bridge plate is erected between the caps of two bridge decks of the original simply supported bridge structure, bridge supports are arranged between the bridge plates and the caps, the reinforcing structure comprises a reinforced corrugated roof and corrugated plate bearing platforms, the two groups of corrugated plate bearing platforms are respectively arranged below the caps on two sides, the reinforced corrugated roof is not fixedly arranged between the two groups of corrugated plate bearing platforms, the reinforced corrugated roof is bent upwards to form an arch structure, a pressure-resistant block is arranged at the top of the reinforced corrugated roof, the upper end face of the pressure-resistant block is in contact with the lower end of the bridge plate, and the reinforced corrugated roof provides an upward supporting force for the bridge plates through the pressure-resistant block.
In this embodiment, the buckled plate cushion cap sets up the locating part for seting up the desk groove on abutment lateral wall, sets up the locating part in the desk groove, and the locating part is pre-buried angle steel, consolidates the both ends of buckled plate and unfixed setting in the installation inslot that the desk groove and the locating part of both sides abutment constitute.
In the embodiment, the original abutment needs to be grooved, so that the cost of materials is saved.
Example 3:
Referring to fig. 7-9, a bridge plate 3 is erected between caps 2 of two bridge decks 1 of the original simply supported bridge structure, bridge supports 4 are arranged between the bridge plates 3 and the caps 2, the reinforcing structure comprises two groups of reinforcing corrugated vertical plates 9 and reinforcing corrugated top plates 5, the two groups of reinforcing corrugated vertical plates 9 are respectively anchored on side walls of the bridge decks 1 on two sides to play a role in reinforcing side walls of the bridge decks 1, the upper ends of the reinforcing corrugated vertical plates 9 are connected with corrugated angle steels 10 through bolts, the two groups of connecting corrugated angle steels 10 are not fixedly spanned, the reinforcing corrugated top plates 5 are bent upwards to form an arch structure, pressure resistant blocks 6 are arranged at the tops of the reinforcing corrugated top plates, the upper end faces of the pressure resistant blocks 6 are in contact with the lower ends of the bridge plates 3, and the reinforcing corrugated top plates 5 provide an upward supporting force for the bridge plates 3 through the pressure resistant blocks 6.
In the embodiment, a grouting space is reserved between the reinforcing corrugated riser 9 and the side wall of the bridge abutment 1, grouting holes are formed in the reinforcing corrugated riser 9, and concrete mortar 11 is poured into the grouting space.
As in embodiment 1, the pressure-resistant block 6 is of a rectangular structure as a whole, which is as wide as the reinforcing corrugated roof plate 5; the upper end face of the pressure-resistant block 6 is horizontal and can be tightly attached to the lower end face of the bridge plate 3, the lower end face is an arc face with a corrugated structure and is tightly attached to the upper end face of the reinforced corrugated top plate 5; in this embodiment, the pressure-resistant block 6 is a concrete pressure-resistant block. In other embodiments, the pressure-resistant block 6 may be a quick setting pressure-resistant block or a rubber pressure-resistant block.
The height of the replacement space of the support formed by the reinforced corrugated top plate and the two ends of the bridge plate is not less than 0.5m, so that the bridge support 4 can be replaced and constructed in the future conveniently.
It should be noted that, the wave form of the receiving corrugated angle steel 10 is the same as the wave form of the reinforced corrugated top plate 5, so that the reinforced corrugated top plate 5 is better matched with the peaks and valleys of the receiving corrugated angle steel 10, and the reinforced corrugated top plate 5 is not easy to move transversely.
In this embodiment, consolidate ripple riser and concrete mortar accomplish the reinforcement to both sides abutment, accomplish the reinforcement to the bridge slab through the reinforced ripple roof and carry the load, all-round load burden that has alleviateed old simple support girder bridge has improved the bridge reinforcement effect.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. Bridge plate is erect between the table caps of two bridge decks of original simply supported girder bridge structure to bridge plate reinforcing structure, a serial communication port, reinforced structure is including strengthening ripple roof and buckled plate cushion cap, and two sets of buckled plate cushion caps set up respectively in both sides table caps below, and not fixed the striding between two sets of buckled plate cushion caps establish the strengthening ripple roof, the top of strengthening ripple roof is the arch structure, and the top of strengthening ripple roof sets up the pressure resistant piece, and the pressure resistant piece up end meets with the lower extreme of bridge plate, is arched strengthening ripple roof through the upper bend and produces prestressing force, and the strengthening ripple roof provides an ascending steady supporting force to the bridge plate through the pressure resistant piece.
2. The simply supported girder bridge reinforcing structure according to claim 1, wherein the corrugated plate bearing platform comprises a vertical connecting plate, a bearing corrugated plate and reinforcing expansion bolts, the bearing corrugated plate is fixed in the center of the vertical connecting plate in an upward-inclined mode, the vertical connecting plate is connected with the side wall of the bridge abutment through a plurality of groups of reinforcing expansion bolts, and the reinforcing corrugated top plate is arranged between the two groups of bearing corrugated plates in a crossing mode; the wave form of the bearing corrugated plate is the same as that of the reinforced corrugated top plate.
3. The simply supported girder bridge reinforcing structure according to claim 2, wherein a plurality of triangular support reinforcing blocks are arranged on the vertical connecting plate below the bearing corrugated plate.
4. The simple girder bridge reinforcing structure according to claim 1, wherein the corrugated plate bearing platform is a platform groove formed in the side wall of the bridge abutment, a limiting piece is arranged in the platform groove, and two ends of the reinforced corrugated plate are not fixedly arranged in a mounting groove formed by the platform groove and the limiting piece.
5. The simple girder bridge reinforcing structure according to claim 3 or 4, wherein the pressure-resistant block is integrally rectangular in structure, the upper end face of the pressure-resistant block is horizontal and is tightly attached to the lower end face of the bridge plate, the lower end face of the pressure-resistant block is an arc face with a corrugated structure, and the lower end face of the pressure-resistant block is tightly attached to the upper end face of the reinforced corrugated roof plate; the pressure-resistant block is quick setting pressure-resistant block, rubber pressure-resistant block or concrete pressure-resistant block.
6. The simple girder bridge reinforcing structure according to claim 1, wherein the height of the support replacement space formed by the reinforced corrugated roof and the two ends of the bridge plate is not less than 0.5m.
7. The bridge plate is erected between the caps of two bridge decks of the original simply supported girder bridge structure, and the bridge is characterized in that the bridge comprises two groups of reinforcing corrugated vertical plates and reinforcing corrugated top plates, the two groups of reinforcing corrugated vertical plates are respectively anchored on the side walls of the bridge decks on two sides, the upper ends of the reinforcing corrugated vertical plates are connected with bearing corrugated angle steels, the reinforcing corrugated top plates are not fixedly spanned between the two bearing corrugated angle steels, the reinforcing corrugated top plates are bent upwards to form an arch structure, the top of the reinforcing corrugated top plates are provided with pressure-resistant blocks, the upper end surfaces of the pressure-resistant blocks are connected with the lower ends of the bridge plates, prestress is generated by the upwardly bent reinforcing corrugated top plates, and the reinforcing corrugated top plates provide an upward stable supporting force for the bridge plates through the pressure-resistant blocks; the wave form of the bearing corrugated angle steel is the same as that of the reinforced corrugated top plate.
8. The simply supported girder bridge reinforcing structure according to claim 7, wherein a grouting space is reserved between the reinforcing corrugated riser and the abutment side wall, grouting holes are formed in the reinforcing corrugated riser, and concrete mortar is poured into the grouting space.
9. The simple girder bridge reinforcing structure according to claim 8, wherein the pressure-resistant block is integrally of a rectangular structure, the upper end face of the pressure-resistant block is horizontal and is tightly attached to the lower end face of the bridge plate, the lower end face of the pressure-resistant block is an arc face with a corrugated structure, and the lower end face of the pressure-resistant block is tightly attached to the upper end face of the reinforced corrugated roof plate; the pressure-resistant block is quick setting pressure-resistant block, rubber pressure-resistant block or concrete pressure-resistant block; the height of the support replacement space formed by the reinforced corrugated top plate and the two ends of the bridge plate is not less than 0.5m.
10. The method for reinforcing the simply supported girder bridge is characterized in that a bridge plate of the original simply supported girder bridge leaves a bridge abutment through a crane or a jack;
a reinforced corrugated top plate is not fixedly arranged between the bridge decks at the two sides in a crossing way, a pressure-resistant block is arranged at the upper end of the reinforced corrugated top plate, the reinforced corrugated top plate is bent upwards to form an arch structure, and the highest point of the reinforced corrugated top plate is higher than a supporting surface formed by the bridge caps at the two sides;
the bridge plate is placed back to the bridge abutment through the crane or the jack, and the pressure-resistant block drives the reinforced corrugated plate to deform downwards, and conversely, the reinforced corrugated plate can provide an upward supporting force for the bridge plate through the pressure-resistant block.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111329311.9A CN114000442B (en) | 2021-11-10 | 2021-11-10 | Simply supported girder bridge reinforcing structure and reinforcing method thereof |
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| CN202111329311.9A CN114000442B (en) | 2021-11-10 | 2021-11-10 | Simply supported girder bridge reinforcing structure and reinforcing method thereof |
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| CN114000442A CN114000442A (en) | 2022-02-01 |
| CN114000442B true CN114000442B (en) | 2024-10-25 |
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| JP3260609B2 (en) * | 1995-11-13 | 2002-02-25 | 大阪ベンダー工業株式会社 | Bridge viaduct reinforcement structure |
| JPH1137412A (en) * | 1997-07-11 | 1999-02-12 | Toto Ltd | Combustion device |
| JP2001059208A (en) * | 1999-08-23 | 2001-03-06 | Chiyoda Engineering Consultants Co Ltd | Reinforcement method of existing bridge by steel arch |
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