CN216108151U - Simply supported beam bridge reinforced structure - Google Patents
Simply supported beam bridge reinforced structure Download PDFInfo
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- CN216108151U CN216108151U CN202122744254.2U CN202122744254U CN216108151U CN 216108151 U CN216108151 U CN 216108151U CN 202122744254 U CN202122744254 U CN 202122744254U CN 216108151 U CN216108151 U CN 216108151U
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Abstract
The utility model relates to a reinforcing structure of a simply supported beam bridge, wherein a bridge plate is erected between the abutment caps of two abutment stages of the original simply supported beam bridge, the reinforcing structure comprises a reinforcing corrugated top plate and corrugated plate bearing platforms, two groups of corrugated plate bearing platforms are respectively arranged below the abutment caps at two sides, the reinforcing corrugated top plate is not fixedly arranged between the two groups of corrugated plate bearing platforms in a spanning mode, the reinforcing corrugated top plate is bent upwards to form an arch structure, a pressure-resistant block is arranged at the top of the reinforcing corrugated top plate, and the upper end face of the pressure-resistant block is connected with the lower end of the bridge plate. The buckled plate cushion cap includes vertical connecting plate, accepts the buckled plate and consolidates expansion bolts, consolidates the ripple roof and strides and locate two sets of between accepting the buckled plate. The reinforced corrugated roof plate bent upwards to form the arch generates prestress, and the reinforced corrugated roof plate provides upward stable supporting force for the bridge plate through the pressure-resistant block, so that the reinforcement of the old bridge and the dangerous bridge is realized, the problems of sinking, cracking and the like of the old bridge and the dangerous bridge are solved, the bending resistance and the shearing resistance of the bridge are improved, and the reinforcement effect is obvious.
Description
Technical Field
The utility model relates to the technical field of lifting and reinforcing of beam bridges, in particular to a simply supported beam bridge reinforcing structure and a reinforcing method thereof.
Background
The simple beam bridge is a beam bridge with two ends respectively supported on the pier as a main bearing structure, and belongs to a statically determinate structure. The bridge is the bridge shape which is the earliest and most widely used in beam bridges. The bridge is suitable for various geological conditions, has a simple structure, is easy to be made into standardized and assembled components, is convenient to manufacture and install, and is a beam bridge which is most widely adopted.
Due to the gradual increase of traffic pressure and the continuous improvement of the service life of the existing bridges, a large number of old bridges and dangerous bridges appear on a highway and a local road in China, and through investigation on different types of diseases of the bridges, the diseases such as poor durability, cracks, single plate stress, surface layer defects, serious bridge deck pavement damage, freeze-thaw damage, bridge head sinking, wing wall bulging, pier scouring and foundation hollowing are found to be the most common diseases, so that the driving comfort is reduced, the direct damage effect of the vehicle on the bridge structure is more serious, and serious accidents such as vehicle runaway, bridge collapse and the like are directly caused in serious cases.
Therefore, the maintenance and reinforcement of simply supported girder bridges gradually become hot spots, the number of bridge groups needing reinforcement and bearing capacity improvement is increased day by day, most reinforcement methods in the prior art can only stabilize the bearing capacity of the bridge to live load in a single direction, and do not help the girder body to resist dead weight and increase the bearing capacity; the need is high to provide a simply supported bridge reinforcing structure, which can conveniently and reliably reinforce the existing bridge.
Disclosure of Invention
The utility model provides a simply supported beam bridge reinforcing structure, which solves the problems of complex reinforcing structure, high construction difficulty, low reinforcing strength and the like in the prior art.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a reinforcing structure of a simply supported beam bridge is characterized in that a bridge plate is erected between two abutment caps of an original simply supported beam bridge structure, the reinforcing structure comprises a reinforcing corrugated top plate and corrugated plate bearing platforms, the two groups of corrugated plate bearing platforms are respectively arranged below the abutment caps on two sides, the reinforcing corrugated top plate is arranged between the two groups of corrugated plate bearing platforms in a non-fixed spanning mode, the reinforcing corrugated top plate is bent upwards to be of an arch structure, a pressure-resistant block is arranged at the top of the reinforcing corrugated top plate, and the upper end face of the pressure-resistant block is connected with the lower end of the bridge plate;
the buckled plate cushion cap includes vertical connecting plate, accepts the buckled plate and consolidates expansion bolts, accept the buckled plate and go up the slope and fix in the central authorities of vertical connecting plate, vertical connecting plate is connected with the abutment lateral wall through multiunit reinforcement expansion bolts, and it strides to locate two sets of between the buckled plate of accepting to consolidate the ripple roof.
Furthermore, a plurality of triangular support reinforcing blocks are arranged on the vertical connecting plate below the bearing corrugated plate.
Further, the buckled plate cushion cap is the bench groove of seting up on the abutment lateral wall, sets up the locating part in the bench groove, and what the both ends of consolidating the buckled plate were unfixed sets up in the mounting groove that bench groove and locating part constitute.
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, and the lower end face of the pressure-resistant block is an arc face with a corrugated structure and is tightly attached to the upper end face of the reinforced corrugated top plate; the pressure-resistant block is a quick-setting pressure-resistant block, a rubber pressure-resistant block or a concrete pressure-resistant block.
Furthermore, the replacement space height of the support formed by the reinforced corrugated top plate and the two ends of the bridge plate is not less than 0.5 m.
Furthermore, the reinforced corrugated top plate is formed by sequentially overlapping a plurality of corrugated steel plates and then connecting or welding the corrugated steel plates into a sheet through hot galvanizing high-strength bolts.
Furthermore, the reinforced corrugated top plate is bolted or welded into a piece through flange plates arranged on the periphery of the corrugated steel plate.
Furthermore, the interval of the wall thickness of the corrugated steel plate is 2.5 mm-12 mm, the wave distance wave height selection comprises 380mm 140mm, 150mm 50mm, 200mm 55mm, 230mm 64mm, 300mm 110mm or 400mm 150mm, and the steel plate material comprises Q345, Q235 or Q355.
Compared with the prior art, the utility model has the following beneficial effects:
1. the beam bridge reinforcing structure has no burden on the dead weight of a bridge, the reinforcing corrugated top plate which is bent upwards to form the arch shape generates prestress, and the reinforcing corrugated top plate provides upward stable supporting force for a bridge plate through the pressure-resistant block, so that the reinforcing of an old bridge and a dangerous bridge is realized, the problems of sinking, cracks and the like of the old bridge and the dangerous bridge are solved, the bending-resistant and shearing-resistant bearing capacity of the bridge is improved, and the reinforcing effect is obvious.
2. The beam bridge reinforcing structure transmits the supporting force with larger flexible area to the bridge plate through the pressure-resistant block, reduces the deformation problem caused by point stress of the reinforced corrugated top plate and the bridge plate, prevents the crack of the beam bridge under the overload action from developing, and prolongs the service life of the reinforcing structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.
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 sheet deck with a reinforced corrugated top sheet;
FIG. 6 is a schematic diagram of a refractory block;
in the figure, 1-bridge abutment, 2-abutment cap, 3-bridge plate, 4-bridge support, 5-reinforced corrugated top plate, 501-corrugated steel plate, 6-pressure-resistant block, 7-corrugated plate bearing platform, 701-vertical connecting plate, 702-corrugated plate bearing, 703-reinforced expansion bolt, 704-triangular support reinforcing block and 8-support replacement space.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. 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 utility model is to design a reinforcing structure of a simply supported beam bridge, and an upward stable supporting force is provided for a bridge plate of the simply supported beam bridge through a reinforcing corrugated top plate which is bent upwards to form an arch structure, 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 simple beam bridge reinforced structure, erect bridge plate 3 between the cap 2 of two abutments 1 of original simple beam bridge structure, set up bridge beam support 4 between bridge plate 3 and the cap 2, reinforced structure is including consolidating ripple roof 5 and buckled plate cushion cap 7, two sets of buckled plate cushion caps 7 set up respectively in both sides cap 2 below, unset striding between two sets of buckled plate cushion caps 7 and establishing consolidating ripple roof 5, it is bow-shaped structure to consolidate ripple roof 5, set up resistant briquetting 6 at the top of consolidating ripple roof 5, the up end of resistant briquetting 6 contacts with the lower extreme of bridge plate 3, it gives 3 ascending holding power of bridge plate through resistant briquetting 6 to consolidate ripple roof 5.
Referring to fig. 2, the corrugated plate bearing platform 7 includes a vertical connecting plate 701, a bearing corrugated plate 702 and a plurality of reinforcing expansion bolts 703, the vertical connecting plate 701 is a rectangular steel plate, the bearing corrugated plate 702 is slightly inclined upwards and fixed in the center of the vertical connecting plate 701 through bolts or high-strength welding, the vertical connecting plate 701 is connected with the side wall of the abutment 1 through upper and lower rows of multiple groups of reinforcing expansion bolts 703, and the reinforcing corrugated top plate 701 is spanned between two groups of bearing corrugated plates 702. The cambered surface of the reinforced corrugated top plate 5 and the two ends of the bridge plate 3 form a support replacing space 8, and a worker drills into the regular replacement bridge support 4 after the bridge reinforcing engineering is finished, so that the height of the support replacing space 8 is not less than 0.5 m. It should be noted that the waveform of the adapting corrugated plate 702 is the same as the waveform of the reinforced corrugated top plate 5, which is convenient for the fixed corrugated top plate 5 to better match with the peaks and valleys of the adapting corrugated plate 702, and the fixed corrugated top plate 5 is not easy to move laterally.
Referring to fig. 4, in the present embodiment, a plurality of corrugated steel plates 501 are sequentially stacked and then connected or welded by hot-dip galvanized high-strength bolts; in other embodiments, flanges may be disposed around the corrugated steel plate 501, and the reinforced corrugated top plate 5 is formed by bolting or welding the flanges around the corrugated steel plate 501.
In this embodiment, the interval of the wall thickness of the corrugated steel plate 501 is 2.5mm to 12mm, the wave distance and wave height includes 380mm by 140mm, 150mm by 50mm, 200mm by 55mm, 230mm by 64mm, 300mm by 110mm or 400mm by 150mm, and the steel plate material includes Q345, Q235 or Q355.
Referring to fig. 3 and 5, in order to reinforce the strength of the corrugated receiving plate 702 and prevent the corrugated receiving plate 702 from bending or deforming downwards under load, a plurality of triangular support reinforcing blocks 704 are arranged on the vertical connecting plate 701 below the corrugated receiving plate 702.
Referring to fig. 6, the pressure block 6 is a rectangular structure as a whole, and has the same width as the reinforced corrugated top plate 5; the upper end surface of the pressure-resistant block 6 is horizontal and can be tightly attached to the lower end surface of the bridge plate 3, and the lower end surface is a cambered surface with a corrugated structure and is tightly attached to the upper end surface 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 also be made of rubber or concrete.
The method for reinforcing the simply supported beam bridge comprises the following steps:
and 3, leveling the bridge plate, slowly putting the bridge plate back to the abutment caps of the abutment platforms at the two sides through a crane or a jack, driving the reinforced corrugated plate to deform downwards by the pressure resistant block, and giving an upward supporting force to the bridge plate by the reinforced corrugated plate through the pressure resistant block.
Before step 3, the base groove of the support pad stone can be polished to be flat according to the specific situation of the bridge support, the support pad stone is placed, and then the rubber bridge support is placed.
Example 2:
the utility model provides a simply supported girder bridge reinforced structure, erect the bridge slab between the abutment cap of two abutments of original simply supported girder bridge structure, set up the bridge beam support between bridge slab and the abutment cap, reinforced structure is including consolidating ripple roof and buckled plate cushion cap, two sets of buckled plate cushion caps set up respectively in both sides abutment cap below, it establishes the reinforcement ripple roof to unfixed striding between two sets of buckled plate cushion caps, it is bow-shaped structure to consolidate the bending on the ripple roof, top at the reinforcement ripple roof sets up resistant briquetting, the up end of resistant briquetting contacts with the lower extreme of bridge slab, it gives an ascending holding power of bridge slab through resistant briquetting to consolidate the ripple roof.
In this embodiment, the corrugated plate cushion cap is a platform groove formed in the side wall of the abutment, a limiting member is arranged in the platform groove, the limiting member is a pre-buried angle steel, and two ends of the reinforced corrugated plate are not fixed and are arranged in the mounting groove formed by the platform grooves of the abutment on two sides and the limiting member.
In the embodiment, the original bridge abutment needs to be grooved, so that the material cost is saved.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A reinforcing structure of a simply supported beam bridge is characterized in that a bridge plate is erected between the abutment caps of two abutments of the original simply supported beam bridge structure and comprises a reinforced corrugated top plate and corrugated plate bearing platforms, the two groups of corrugated plate bearing platforms are respectively arranged below the abutment caps on two sides, the reinforced corrugated top plate is arranged between the two groups of corrugated plate bearing platforms in a non-fixed spanning mode, the reinforced corrugated top plate is bent upwards to form an arch structure, a pressure-resistant block is arranged at the top of the reinforced corrugated top plate, and the upper end face of the pressure-resistant block is connected with the lower end of the bridge plate;
the buckled plate cushion cap includes vertical connecting plate, accepts the buckled plate and consolidates expansion bolts, accept the buckled plate and go up the slope and fix in the central authorities of vertical connecting plate, vertical connecting plate is connected with the abutment lateral wall through multiunit reinforcement expansion bolts, and it strides to locate two sets of between the buckled plate of accepting to consolidate the ripple roof.
2. The simply supported beam bridge reinforcing structure of claim 1, wherein a plurality of triangular support reinforcing blocks are arranged on the vertical connecting plates below the bearing corrugated plates.
3. The simply supported girder bridge reinforcing structure according to claim 1, wherein the corrugated plate bearing platform is a platform groove formed in a side wall of the bridge platform, a limiting member is disposed in the platform groove, and both ends of the reinforcing corrugated plate are not fixedly disposed in a mounting groove formed by the platform groove and the limiting member.
4. The simply supported beam bridge reinforcing structure according to claim 2 or 3, wherein the pressure-resistant block is of a rectangular structure as a whole, the upper end surface of the pressure-resistant block is horizontal and is tightly attached to the lower end surface of the bridge plate, and the lower end surface of the pressure-resistant block is an arc surface with a corrugated structure and is tightly attached to the upper end surface of the reinforced corrugated top plate; the pressure-resistant block is a quick-setting pressure-resistant block, a rubber pressure-resistant block or a concrete pressure-resistant block.
5. The simply supported bridge reinforcing structure according to claim 4, wherein the replacement space height of the support formed by the reinforced corrugated top plate and the two ends of the bridge plate is not less than 0.5 m.
6. The simply supported beam bridge reinforcing structure of claim 5, wherein the reinforced corrugated top plate is formed by sequentially stacking a plurality of corrugated steel plates and then connecting or welding the corrugated steel plates into a sheet by hot galvanizing high-strength bolts.
7. The simply supported beam bridge reinforcing structure of claim 5, wherein the reinforcing corrugated top plate is bolted or welded into a sheet by flanges arranged around the corrugated steel plate.
8. The simply supported beam bridge reinforced structure of claim 6 or 7, wherein the corrugated steel plate has a wall thickness interval of 2.5mm to 12mm, the wave pitch pattern comprises 380mm 140mm, 150mm 50mm, 200mm 55mm, 230mm 64mm, 300mm 110mm or 400mm 150mm, and the steel plate material comprises Q345, Q235 or Q355.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122744254.2U CN216108151U (en) | 2021-11-10 | 2021-11-10 | Simply supported beam bridge reinforced structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122744254.2U CN216108151U (en) | 2021-11-10 | 2021-11-10 | Simply supported beam bridge reinforced structure |
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| CN216108151U true CN216108151U (en) | 2022-03-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000442A (en) * | 2021-11-10 | 2022-02-01 | 陕西省交通规划设计研究院有限公司 | Simply supported beam bridge reinforcing structure and reinforcing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000442A (en) * | 2021-11-10 | 2022-02-01 | 陕西省交通规划设计研究院有限公司 | Simply supported beam bridge reinforcing structure and reinforcing method thereof |
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