CN114277698A - Corrugated steel arch type reinforcing structure of simply supported beam bridge and reinforcing method thereof - Google Patents
Corrugated steel arch type reinforcing structure of simply supported beam bridge and reinforcing method thereof Download PDFInfo
- Publication number
- CN114277698A CN114277698A CN202111506021.7A CN202111506021A CN114277698A CN 114277698 A CN114277698 A CN 114277698A CN 202111506021 A CN202111506021 A CN 202111506021A CN 114277698 A CN114277698 A CN 114277698A
- Authority
- CN
- China
- Prior art keywords
- bridge
- plate
- corrugated
- reinforced
- top plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a corrugated steel arch type reinforcing structure of a simply supported beam bridge and a reinforcing method thereof. The structure of the invention has no burden on the dead weight of the bridge, the reinforced corrugated roof plate which is bent upwards into an arch shape is fixed on the side walls of the abutment at two sides, the balance weight is installed through a plurality of groups of traction rings arranged downwards in the middle of the reinforced corrugated roof plate to achieve the installation condition of the bridge plate, then the balance weight is removed, and the arch-shaped reinforced corrugated roof plate provides an upward stable supporting force for the bridge plate, thereby realizing the reinforcement of the old bridge and the dangerous bridge, solving the problems of sinking, cracks and the like of the old bridge and the dangerous bridge, simultaneously improving the bending resistance and shearing resistance bearing capacity of the bridge and having obvious reinforcement effect.
Description
Technical Field
The invention relates to the technical field of lifting and reinforcing of beam bridges, in particular to a corrugated steel arch type reinforcing structure of a simply supported beam bridge 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 invention provides a corrugated steel arch type reinforcing structure of a simply supported girder bridge and a reinforcing method thereof, and solves the problems that the reinforcing structure of the simply supported girder bridge is complex, the construction difficulty is high, the reinforcing strength is low and the like in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the corrugated steel arch type reinforcing method of the simply supported beam bridge comprises the following steps: enabling the bridge plate of the original simply supported beam bridge to leave the abutment through a crane or a jack;
a reinforced corrugated top plate is fixedly spanned between the bridge abutments on the two sides, the reinforced corrugated top plate is bent upwards to form an arch structure, and the arch top of the reinforced corrugated top plate is higher than the plane of the lower end face of the original bridge plate;
applying counter weight to the reinforced corrugated roof plate to ensure that the vault of the reinforced corrugated roof plate is equal to or lower than the plane of the lower end face of the original bridge plate;
the original bridge plate is placed back;
and removing the counter weight of the reinforced corrugated top plate, and rebounding and arching the reinforced corrugated top plate upwards to provide an upward supporting force for the original bridge plate.
Furthermore, the upper end of the fixed corrugated roof plate is provided with a pressure-resistant block, and the pressure-resistant block is arranged on the original bridge plate and comprises a prefabricated pressure-resistant block or a cast-in-place pressure-resistant block.
Further, the method also comprises the step of reinforcing the side walls of the two abutment platforms, wherein the reinforced corrugated top plate is fixedly arranged on a mounting surface formed after the side walls of the abutment platforms are reinforced in a spanning mode; the method for reinforcing the two abutment side walls comprises the steps that the reinforcing corrugated vertical plates are anchored tightly to the abutment side walls or are anchored on the abutment side walls at intervals through the reinforcing corrugated vertical plates and then grouting and pouring are carried out in formed filling cavities.
The corrugated steel arch-type reinforced structure of the simply supported beam bridge is characterized in that a bridge plate is erected between the caps of two bridge abutments of the original simply supported beam bridge structure, the reinforced structure comprises a reinforced corrugated top plate, the reinforced corrugated top plate is fixedly arranged between the side walls of the bridge abutments on two sides in a spanning mode, the reinforced corrugated top plate is bent upwards to form an arch structure, and the reinforced corrugated top plate is pressed downwards by the bridge plate to deform downwards and provides upward supporting force for the bridge plate.
Furthermore, a plurality of groups of traction rings are arranged downwards in the middle of the reinforced corrugated top plate, and a balance weight can be hung on each traction ring.
Further, the reinforced corrugated top plate is fixed between the abutment side walls on the two sides through chemical anchor bolts.
Further, set up a buckled plate cushion cap on the abutment lateral wall of both sides respectively, the buckled plate cushion cap includes vertical connecting plate, accepts the buckled plate and consolidates expansion bolts, and vertical connecting plate is connected with the abutment lateral wall through multiunit reinforcement expansion bolts, consolidates the fixed setting of ripple roof through multiunit reinforcement expansion bolts and is accepting on the buckled plate.
Furthermore, the reinforced structure further comprises two groups of reinforced corrugated vertical plates, the two groups of reinforced corrugated vertical plates are respectively anchored on the abutment side walls on the two sides, corrugated angle steel is connected and accepted at the upper ends of the reinforced corrugated vertical plates, and a reinforced corrugated top plate is fixedly arranged between the two groups of accepted corrugated angle steel in a crossing manner.
Furthermore, a pressure-resistant block is arranged between the reinforced corrugated top plate and the bridge plate, the pressure-resistant block is integrally of a rectangular structure, 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, and 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 0.5 m.
Furthermore, a rectangular surrounding frame structure is arranged at the top of the reinforced corrugated top plate, and fillers are poured into the rectangular surrounding frame structure to form a pressure-resistant block.
Compared with the prior art, the invention has the following beneficial effects:
1. the reinforcing structure of the bridge has no burden on the dead weight of the bridge, the reinforcing corrugated top plate which is bent upwards to form an arch shape is fixed on the side walls of the abutment at two sides, the balance weight is installed through a plurality of groups of traction rings arranged downwards in the middle of the reinforcing corrugated top plate to enable the reinforcing corrugated top plate to reach the installation condition of the bridge plate, then the balance weight is removed, and the arch reinforcing corrugated top plate provides an upward stable supporting force for the bridge plate, so that the reinforcing of an old bridge and a dangerous bridge is realized, the problems of sinking, cracks and the like of the bridge body of the old bridge and the dangerous bridge are solved, the anti-shear 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.
3. In one embodiment of the invention, the integral reinforcing structure of the reinforced corrugated top plate and the reinforced corrugated vertical plate is arranged, the reinforcing of the abutment at two sides is completed through the reinforced corrugated vertical plate and concrete mortar, and the reinforcing and lifting of the bridge plate is completed through the reinforced corrugated top plate, so that the load burden of an old simply supported bridge is reduced in an all-round manner, and the bridge reinforcing effect is improved.
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 the reinforced corrugated roof of FIG. 1;
FIG. 3 is an enlarged schematic view at A of FIG. 2;
FIG. 4 is a schematic diagram of a refractory block;
FIGS. 5 to 9 are schematic views of the reinforcement method according to example 1 of the present invention;
FIG. 10 is a schematic structural view of embodiment 3 of the present invention;
FIG. 11 is a schematic structural view of a corrugated angle iron according to embodiment 3 of the present invention;
in the figure, 1-bridge abutment, 2-abutment cap, 3-bridge plate, 4-bridge support, 5-reinforced corrugated top plate, 501-corrugated steel plate, 502-connecting end, 503-chemical anchor bolt, 504-hot galvanizing high-strength bolt, 6-pressure resistant block, 7-support replacing space, 8-traction ring, 9-counterweight, 10-bearing corrugated angle steel, 11-concrete mortar and 12-reinforced corrugated vertical plate.
Detailed Description
To facilitate an understanding of the invention, the invention 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.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
The basic idea of the invention is to design a corrugated steel arch type reinforcing structure of a simply supported girder bridge and a reinforcing method thereof, and a reinforced corrugated top plate fixedly arranged between two bridge abutments on two sides provides an upward stable supporting force for a bridge plate of the simply supported girder bridge. The reinforced corrugated top plate is bent upwards to form an arch structure and is provided with a traction ring for hoisting a balance weight, and the bridge plate is convenient to mount during reinforcement. Therefore, the reinforcing and carrying of the old bridge and the dangerous bridge are realized, and the problems of sinking, central cracking and the like of the bridge plate are solved.
Example 1:
referring to fig. 1-3, a corrugated steel arch reinforced structure of a simply supported girder bridge, erect bridge plate 3 between the stage cap 2 of two abutments 1 of original simply supported girder bridge structure, set up bridge beam support 4 between bridge plate 3 and the stage cap 2, reinforced structure includes reinforcement ripple roof 5, reinforcement ripple roof 5 is fixed to be striden and is established between the lateral wall of both sides abutment 1, reinforcement ripple roof 5 is the bow-shaped structure of bending upward, set up resistant briquetting 6 at the top of reinforcement ripple roof 4, it is pressed down by bridge plate 3 and produces the deformation downwards, give bridge plate 3 an ascending holding power through resistant briquetting 6.
In this embodiment, the two ends of the reinforced corrugated roof plate 5 are bent downward vertically to form connecting ends 502, and the connecting ends 502 are fixed between the side walls of the abutment 1 by chemical anchors 503. The cambered surface of the reinforced corrugated top plate 5 and the two ends of the bridge plate 3 form a support replacing space 7, 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 7 is not less than 0.5 m.
The middle part of the reinforced corrugated roof plate 5 is downwards provided with a plurality of groups of traction rings 8, the traction rings 8 are used for hanging a balance weight 9 of the reinforced corrugated roof plate 5 before the bridge plate 3 is installed, and the balance weight 9 can be selected from a metal balance weight block or a cement balance weight block.
In the embodiment, the reinforced corrugated top plate 5 is formed by sequentially stacking a plurality of corrugated steel plates 501 and then connecting or welding the corrugated steel plates by hot-dip galvanized high-strength bolts 504; in other embodiments, flanges may be disposed around the corrugated steel plate 501, and the reinforced corrugated roof 5 is formed by bolting or welding the flanges around the corrugated steel plate.
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, 150 mm by 50 mm, 200 mm by 55 mm, 230 mm by 64 mm, 300 mm by 110 mm or 400 mm by 150 mm, and the steel plate material includes Q345, Q235 or Q355.
Referring to fig. 4, 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 face of the pressure-resistant block 6 is of a horizontal structure and can be tightly attached to the lower end face of the bridge plate 3, and the lower end face of the pressure-resistant block 6 is of a cambered surface 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 is a quick-setting pressure-resistant block. In other embodiments, the pressure-resistant block can also be made of rubber pressure-resistant block or concrete pressure-resistant block. Or the top of the reinforced corrugated top plate 5 is enclosed into a rectangular enclosing frame structure through a steel plate, and then a pressure-resistant block is arranged in the enclosing frame structure in a way of pouring concrete in situ.
The corrugated steel arch type reinforcing method for the simply supported beam bridge comprises the following steps:
referring to fig. 5, step 1, a bridge plate of an original simply supported beam bridge is separated from an abutment 1 through a crane or a jack;
referring to fig. 6, step 2, fixedly spanning a reinforced corrugated roof plate 5 between the two abutment platforms 1, specifically, two ends of the reinforced corrugated roof plate 5 are bent downward vertically to form connecting ends 502, and the connecting ends 502 are fixed between the side walls of the abutment platforms 1 at the two sides by chemical anchor bolts 503; a pressure-resistant block 6 is arranged in the center of the upper end of the fixed corrugated top plate 5, the fixed corrugated top plate 5 is bent upwards to form an arch structure, and the arch top of the fixed reinforced corrugated top plate 5 is higher than the plane of the lower end face of the original bridge plate;
referring to fig. 7, in step 3, a plurality of groups of traction rings 8 are arranged downwards in the middle of the reinforced corrugated roof 5 to apply counter weights 9 to the reinforced corrugated roof 5, so that the arch crown of the reinforced corrugated roof 5 is deformed downwards for a certain distance, and finally the arch crown is equal to or lower than the plane of the lower end face of the original bridge plate 3;
referring to fig. 8, step 4, leveling the bridge plate 3, slowly placing the bridge plate 3 back to the caps 2 of the bridge abutments 1 at two sides by a crane or a jack, wherein the lower end surface of the bridge plate 3 is not in contact with or slightly in contact with the pressure-resistant block 6;
referring to fig. 9, step 5, the counter weight 9 of the reinforced corrugated roof panel 5 is removed, the reinforced corrugated roof panel 5 rebounds and arches upwards, and the pressure resistance block 6 gives the original bridge panel 3 an upward supporting force.
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.
According to the method, a set of complete construction scheme is provided according to the structure of the corrugated steel arched top plate with elasticity, an upward stable supporting force is provided for the bridge plate, the bending resistance and shearing resistance of the bridge are improved, the bearing capacity of the old bridge is improved, and the reinforcing effect is obvious.
Example 2:
the utility model provides a corrugated steel arch form reinforced structure of simple girder bridge, erect the bridge plate between the abutment cap of two abutments of original simple girder bridge structure, set up the bridge beam support between bridge plate 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, fixed striding between two sets of buckled plate cushion caps establishes the reinforcement ripple roof, it is bow-shaped structure to consolidate the ripple roof upper bend, top at the reinforcement ripple roof sets up resistant briquetting, the up end of resistant briquetting contacts with the lower extreme of bridge plate, it is down produced the deformation to consolidate the ripple roof by bridge plate underpressure, give an ascending holding power of bridge plate through resistant briquetting.
The corrugated plate bearing platform comprises a vertical connecting plate, a corrugated plate and a plurality of reinforcing expansion bolts, wherein the vertical connecting plate is a rectangular steel plate, the corrugated plate is slightly inclined upwards, the corrugated plate is fixed in the center of the vertical connecting plate through bolts or high-strength welding, the vertical connecting plate is connected with the side wall of the bridge abutment through upper and lower rows of multi-group reinforcing expansion bolts, and the reinforcing corrugated top plate is fixedly arranged between the two groups of corrugated plates through the multi-group reinforcing expansion bolts. The cambered surface of the reinforced corrugated top plate and the two ends of the bridge plate form a support replacing space, and a worker drills into the regular replacement of the bridge support after the bridge reinforcing engineering is finished, so that the height of the support replacing space is not less than 0.5 m. It should be noted that the waveform of the adapting corrugated plate is the same as that of the reinforced corrugated top plate 5, which is convenient for the fixed corrugated top plate to be better fixedly matched with the peak valley of the adapting corrugated plate.
And a plurality of groups of traction rings are downwards arranged in the middle of the reinforced corrugated top plate and used for hanging the balance weight when the bridge plate is installed.
In the embodiment, 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 through hot galvanizing high-strength bolts; in other embodiments, flanges may be disposed around the corrugated steel plate, and the reinforced corrugated roof 5 is formed by bolting or welding the flanges around the corrugated steel plate.
In this embodiment, the interval of the wall thickness of the corrugated steel plate is 2.5mm to 12mm, the wave distance and wave height comprises 380mm by 140mm, 150 mm by 50 mm, 200 mm by 55 mm, 230 mm by 64 mm, 300 mm by 110 mm or 400 mm by 150 mm, and the steel plate material comprises Q345, Q235 or Q355.
In order to strengthen the intensity of accepting the buckled plate, avoid strengthening and accept the buckled plate and buckle or warp downwards under the load effect, set up a plurality of triangular supports boss on accepting the vertical connecting plate of buckled plate below.
The whole of the pressure-resistant block is of a rectangular structure and has the same width with the reinforced corrugated top plate; the upper end surface of the pressure-resistant block is horizontal and can be tightly attached to the lower end surface of the bridge plate, and the lower end surface of the pressure-resistant block is a cambered surface with a corrugated structure and is tightly attached to the upper end surface of the reinforced corrugated top plate; in this embodiment, the pressure-resistant block is a quick-setting pressure-resistant block. In other embodiments, the pressure-resistant block can also be made of rubber pressure-resistant block or concrete pressure-resistant block.
The corrugated steel arch type reinforcing method for the simply supported beam bridge comprises the following steps:
3, arranging a plurality of groups of traction rings downwards in the middle of the reinforced corrugated top plate to apply counter weights to the reinforced corrugated top plate, so that the vault of the reinforced corrugated top plate deforms downwards, and the vault is equal to or lower than the plane of the lower end face of the original bridge plate;
and 5, removing the counter weight of the reinforced corrugated top plate, rebounding and arching the reinforced corrugated top plate upwards, and enabling the pressure-resistant block to provide an upward supporting force for the original bridge plate.
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.
In this embodiment, the abutment lateral wall of both sides respectively is provided with the buckled plate cushion cap in advance, consolidates the ripple roof and passes through fixing bolt and accomplish fixed connection with the buckled plate cushion cap.
Example 3:
referring to fig. 10, a corrugated steel arch type reinforcing structure of a simply supported girder bridge, a bridge plate 3 is erected between two abutment caps 2 of two abutments 1 of an original simply supported girder bridge structure, a bridge support 4 is arranged between the bridge plate 3 and the abutment caps 2, the reinforcing structure comprises two groups of reinforcing corrugated vertical plates 12 and reinforcing corrugated top plates 5, the two groups of reinforcing corrugated vertical plates 12 are respectively anchored on the side walls of the abutments 1 at two sides, a grouting space is reserved between the reinforcing corrugated vertical plates 12 and the abutment side walls, grouting holes are arranged on the reinforcing corrugated vertical plates, concrete mortar 11 is poured in the grouting space to play a role in reinforcing the abutment side walls, bearing corrugated angle steels 10 are connected at the upper ends of the reinforcing corrugated vertical plates 5 through bolts, the reinforcing corrugated top plates 5 are fixedly arranged between the two groups of bearing corrugated angle steels 10 in a spanning mode, the reinforcing corrugated top plates 5 are bent to be of an arch structure, pressure resistant blocks 6 are arranged at the tops of the reinforcing corrugated top plates 5, the upper end surface of the pressure-resistant block 6 is in contact with the lower end of the bridge plate 3, the reinforced corrugated top plate 5 is pressed downwards by the bridge plate 3 to deform, and upward supporting force is provided for the bridge plate 3 through the pressure-resistant block 6.
And a plurality of groups of traction rings 9 are arranged downwards in the middle of the reinforced corrugated top plate 5 and used for hanging a balance weight when the bridge plate 3 is installed.
The pressureprost block 6 has a rectangular structure as a whole, and the structure thereof is described in example 1.
The height of a support replacing space 7 formed by the reinforced corrugated top plate 5 and the two ends of the bridge plate 3 is not less than 0.5m, so that the construction of replacing the bridge support 4 in the future is facilitated.
It should be noted that, referring to fig. 11, the waveform of the adapting corrugated angle bar 10 is the same as the waveform of the reinforced corrugated roof plate 5, so that the fixed corrugated roof plate 6 is better matched with the peaks and valleys of the adapting corrugated angle bar 10 and then fixed.
The corrugated steel arch type reinforcing method for the simply supported beam bridge comprises the following steps:
and 6, removing the counter weight of the reinforced corrugated top plate, rebounding and arching the reinforced corrugated top plate upwards, and enabling the pressure-resistant block to provide an upward supporting force for the original bridge plate.
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.
In this embodiment, consolidate ripple riser and concrete mortar and accomplish the reinforcement to both sides abutment, accomplish the reinforcement lift-loading to the bridge slab through consolidating the ripple roof, the all-round load burden that has alleviateed old simple beam bridge has improved the bridge and has consolidated the effect.
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 invention. 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 (10)
1. The corrugated steel arch type reinforcing method of the simply supported beam bridge is characterized by comprising the following steps of:
enabling the bridge plate of the original simply supported beam bridge to leave the abutment through a crane or a jack;
a reinforced corrugated top plate is fixedly spanned between the bridge abutments on the two sides, the reinforced corrugated top plate is bent upwards to form an arch structure, and the arch top of the reinforced corrugated top plate is higher than the plane of the lower end face of the original bridge plate;
applying counter weight to the reinforced corrugated roof plate to ensure that the vault of the reinforced corrugated roof plate is equal to or lower than the plane of the lower end face of the original bridge plate;
the original bridge plate is placed back;
and removing the counter weight of the reinforced corrugated top plate, and rebounding and arching the reinforced corrugated top plate upwards to provide an upward supporting force for the original bridge plate.
2. The corrugated steel arch reinforcing method of a simply supported girder bridge according to claim 1,
and arranging a pressure-resistant block at the upper end of the fixed corrugated top plate, and then arranging the original bridge plate, wherein the pressure-resistant block comprises a prefabricated pressure-resistant block or a cast-in-place pressure-resistant block.
3. The corrugated steel arch reinforcing method of a simply supported girder bridge according to claim 1 or 2,
the reinforced corrugated top plate is fixedly arranged on a mounting surface formed after the side walls of the bridge abutment are reinforced in a spanning manner; the method for reinforcing the two abutment side walls comprises the steps that the reinforcing corrugated vertical plates are anchored tightly to the abutment side walls or are anchored on the abutment side walls at intervals through the reinforcing corrugated vertical plates and then grouting and pouring are carried out in formed filling cavities.
4. A corrugated steel arch type reinforcing structure of a simply supported girder bridge is characterized in that a bridge plate is erected between the abutment caps of two abutments of the original simply supported girder bridge structure,
the reinforced structure comprises a reinforced corrugated top plate, the reinforced corrugated top plate is fixedly arranged between the abutment side walls on the two sides in a spanning mode, the reinforced corrugated top plate is bent upwards to form an arch structure, and the reinforced corrugated top plate is pressed downwards by the bridge plate to deform downwards to provide upward supporting force for the bridge plate.
5. The corrugated steel arch reinforcement structure of a simply supported beam bridge according to claim 4,
and a plurality of groups of traction rings are downwards arranged in the middle of the reinforced corrugated top plate, and a balance weight can be hung on each traction ring.
6. The corrugated steel arch reinforcement structure of a simply supported beam bridge according to claim 5,
the reinforced corrugated top plate is fixed between the abutment side walls on two sides through chemical anchor bolts.
7. The corrugated steel arch reinforcement structure of a simply supported beam bridge according to claim 5,
set up a buckled plate cushion cap on the abutment lateral wall of both sides respectively, the buckled plate cushion cap includes vertical connecting plate, accepts the buckled plate and consolidates expansion bolts, and vertical connecting plate is connected with the abutment lateral wall through multiunit reinforcement expansion bolts, consolidates the fixed setting of ripple roof through multiunit reinforcement expansion bolts on accepting the buckled plate.
8. The corrugated steel arch reinforcement structure of a simply supported beam bridge according to claim 5,
the reinforcing structure further comprises two groups of reinforcing corrugated vertical plates, the two groups of reinforcing corrugated vertical plates are respectively anchored on the abutment side walls on the two sides, corrugated angle steel is connected and accepted at the upper ends of the reinforcing corrugated vertical plates, and a reinforcing corrugated top plate is fixedly arranged between the two groups of accepting corrugated angle steel in a spanning mode.
9. A corrugated steel arch reinforcement structure for a simply supported girder bridge according to any one of claims 6 to 8,
a pressure-resistant block is arranged between the reinforced corrugated top plate and the bridge plate, the pressure-resistant block is integrally of a rectangular structure, 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 a cambered 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, and 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 0.5 m.
10. The corrugated steel arch reinforcement structure of the simply supported girder bridge according to any one of claims 6 to 8, wherein a rectangular surrounding frame structure is arranged on the top of the reinforced corrugated roof plate, and a filler is poured into the rectangular surrounding frame structure to form a pressure-resistant block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111506021.7A CN114277698A (en) | 2021-12-10 | 2021-12-10 | Corrugated steel arch type reinforcing structure of simply supported beam bridge and reinforcing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111506021.7A CN114277698A (en) | 2021-12-10 | 2021-12-10 | Corrugated steel arch type reinforcing structure of simply supported beam bridge and reinforcing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114277698A true CN114277698A (en) | 2022-04-05 |
Family
ID=80871637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111506021.7A Pending CN114277698A (en) | 2021-12-10 | 2021-12-10 | Corrugated steel arch type reinforcing structure of simply supported beam bridge and reinforcing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114277698A (en) |
-
2021
- 2021-12-10 CN CN202111506021.7A patent/CN114277698A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110644349A (en) | Superstructure for wide box girder and short tower cable-stayed bridge and construction method | |
| CN101029471A (en) | Non-cable single-tower stayed bridge | |
| CN208346656U (en) | A kind of hanging basket for the construction of bridge coping prestress wire two times tensioning | |
| CN216194143U (en) | Corrugated steel reinforcing system of simply supported beam bridge | |
| CN216108151U (en) | Simply supported beam bridge reinforced structure | |
| CN216405151U (en) | Corrugated steel arch type reinforcing structure of simply supported beam bridge | |
| CN113322771A (en) | Seamless bridge structure based on ultrahigh-toughness cement-based composite material and construction method | |
| CN112746554A (en) | Combined capping beam and bridge with same | |
| CN114277698A (en) | Corrugated steel arch type reinforcing structure of simply supported beam bridge and reinforcing method thereof | |
| CN110792042A (en) | Anti-overturning reinforcing method for rectangular single-column pier bridge | |
| CN106638265A (en) | Steel reinforced concrete beam rigid framework bridge | |
| CN211735114U (en) | A antidumping reinforced structure for rectangle single-column mound bridge | |
| CN217710377U (en) | Simply supported bridge reinforced structure based on reaction frame traction | |
| CN114855584A (en) | Separated type ultra-wide prestressed concrete box girder structure and construction method thereof | |
| CN211897803U (en) | Continuous new structure of composite beam structure adopting UHPC beam-steel end plate with studs | |
| CN114000442A (en) | Simply supported beam bridge reinforcing structure and reinforcing method thereof | |
| CN211395312U (en) | Upper structure for wide box girder and short tower cable-stayed bridge | |
| CN218322405U (en) | Simply supported bridge reinforced structure based on stepless traction | |
| CN111719417A (en) | Fully-prefabricated light large cantilever pre-bending combined bent cap beam structure and construction method | |
| KR101127427B1 (en) | Rahmen bridge and construction method thereof | |
| CN212404861U (en) | Bent cap construction formwork structure | |
| CN115045205A (en) | Simply supported bridge reinforcing structure based on reaction frame traction and reinforcing method thereof | |
| CN110700122A (en) | A antidumping reinforced structure for rectangle single-column mound bridge | |
| CN212426706U (en) | Fully-prefabricated light large cantilever preflex combined bent cap beam structure | |
| CN215482316U (en) | Integral cast-in-situ bridge deck of combined beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |