CN211171671U - Reinforced structure of bridge veneer atress - Google Patents
Reinforced structure of bridge veneer atress Download PDFInfo
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- CN211171671U CN211171671U CN201922085771.6U CN201922085771U CN211171671U CN 211171671 U CN211171671 U CN 211171671U CN 201922085771 U CN201922085771 U CN 201922085771U CN 211171671 U CN211171671 U CN 211171671U
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Abstract
The utility model discloses a reinforced structure of bridge veneer atress belongs to the bridge and consolidates the field. The flange steel channel is provided with steel flanges on two sides, an upper end opening and a groove, the opening faces upwards and is located right below the hinge joint, reinforced concrete is filled in the groove, the steel flanges are arranged at the top end of the side wall of the groove, the reinforced concrete comprises longitudinal steel bars, U-shaped stirrups and concrete, the longitudinal steel bars are arranged in the U-shaped stirrups and are in cross connection with the longitudinal steel bars, and the two ends of each U-shaped stirrup are uniformly fixed in the lower portions of the bridge slabs on two sides of the hinge joint. The two side walls of the flange channel steel groove are provided with through holes, the two ends of the connecting rib respectively penetrate through the through holes, and the two ends of the connecting rib are provided with threads and corresponding nuts positioned on the outer side of the flange channel steel. The connecting ribs enable the flange channel steel side plates to extrude the reinforced concrete inwards, and the reinforced concrete is prestressed, so that the damage time of the reinforced concrete is delayed or the load capacity of the reinforced concrete is increased. The flange channel steel and the reinforced concrete inside the flange channel steel can synchronously and effectively play the transverse bending resistance and shearing resistance under the load action.
Description
Technical Field
The invention relates to a bridge reinforcing technology, in particular to a reinforcing structure for single plate stress of a bridge.
Background
Aiming at reinforcing the gap at the hinge joint, the Chinese invention patent CN103174098B discloses a reinforcing method for treating the stress of a single plate at a section steel concrete, which comprises the following steps: pressing into U-shaped steel with flanges according to the length and the structure of the single-span bridge, wherein the steel flanges are provided with through holes; b. roughening the surface concrete of the bottom plate on two sides of the hinge joint of the hollow plate, and drilling holes on the bottom plate according to the hole positions of the flanges of the U-shaped steel flanges of the flanges; c, cleaning the drilled hole and implanting an anchoring screw into the through hole; d, anchoring and mounting flange U-shaped steel on the hollow slab; concrete is poured into the hollow slab hinge joint, and the method adopts the steel reinforced concrete reinforcement technology to reinforce the hollow slab from the two aspects of improving the integral stress and the single-beam bearing capacity, thereby not only improving the integrity and the transverse load distribution, but also improving the bearing capacity of the single beam.
In the reinforcement technology, the flange U-shaped steel and the reinforced concrete inside the flange U-shaped steel are not effectively connected and are easy to separate, so that the flange U-shaped steel and the reinforced concrete inside the flange U-shaped steel cannot synchronously and effectively play the bending resistance and the shearing resistance under the load action. Thereby reducing the overall reinforcement properties of the structure.
Disclosure of Invention
Aiming at the prior art, the technical problem to be solved by the invention is to provide a reinforcing structure for the stress of a single plate of a small hinge joint hollow plate, and the structure can greatly improve the overall performance of the reinforcing structure.
In order to solve the technical problem, the invention provides a reinforcing structure for single plate stress of a bridge, which comprises flange channel steel, steel flanges, an opening at the upper end and a groove, wherein the flange channel steel is provided with the steel flanges at two sides, the opening is upward and is positioned right below a hinge joint and is tightly attached to the lower surface of a bridge plate, reinforced concrete is filled in the groove, the steel flanges are arranged at the top ends of the side walls of the groove and are fixed on the lower surface of the bridge plate, the reinforced concrete comprises longitudinal steel bars, U-shaped stirrups and concrete, the longitudinal steel bars are longitudinally arranged along the groove and are arranged in the U-shaped stirrups and are in cross connection with the U-shaped stirrups, and two ends of the U-shaped stirrups are fixedly and fixedly arranged. The vertical both ends of edge of a wing channel-section steel set up the shrouding, and recess upper portion is provided with the inlet pipe, and the inlet pipe passes the shrouding. The flange channel steel is characterized in that through holes are formed in the side walls of two sides of the flange channel steel groove, two ends of the connecting rib penetrate through the through holes respectively, and threads and corresponding nuts located on the outer side of the flange channel steel are arranged at two ends of the connecting rib.
The side plates of the flange channel steel grooves incline towards the two outer sides, the connecting ribs are upwards protruding bent reinforcing steel bars, and the protruding parts of the bent reinforcing steel bars are located above the longitudinal reinforcing steel bars.
And two ends of the longitudinal steel bar are bent downwards and fixed on the inner bottom wall of the flange channel steel.
And a through hole is formed in the steel flange, and the anchoring bolt and the screw rod penetrate through the through hole to fix the steel flange on the lower surface of the bridge plate.
The lower part reinforcing steel bar of the U-shaped stirrup is fixedly provided with an upward vertical reinforcement, and the longitudinal reinforcing steel bar is positioned between the vertical reinforcement and the side reinforcing steel bar of the U-shaped stirrup.
A method for reinforcing a reinforcing structure for bearing a single plate of a bridge comprises the following steps:
S1, pressing into flange channel steel according to the length and the structure of a single-span bridge;
S2, chiseling surface concrete on the bottom plates on two sides of the hinge joint of the bridge plate, and drilling holes in the bottom plates according to the hole positions of the steel flanges of the flange channel steel;
S3, placing the longitudinal steel bars between the vertical bars and the steel bars on the side edges of the U-shaped stirrups, and welding the longitudinal steel bars on the U-shaped stirrups;
S4, cleaning the drilled holes, and smearing adhesive on the upper surface of the steel flange and the lower surface corresponding to the bridge plate;
S5, enabling the through hole in the flange channel steel to correspond to the drilled hole, and enabling the anchoring bolt to penetrate through the through hole and be fixedly implanted into the drilled hole;
S6, welding two ends of a longitudinal steel bar on the inner bottom wall of the flange channel steel;
S7, penetrating one end of the connecting rib through a through hole in one side of the flange channel steel, enabling the connecting rib to pass through the upper portion of the longitudinal steel bar, and placing a strong magnet outside the through hole in the other side of the flange channel steel; when the end of the connecting bar approaches to the strong magnet, the connecting bar is attracted into the through hole on the other side and then passes through the through hole on the other side, and the nuts are screwed at the two ends of the connecting bar until the connecting bar and the longitudinal steel bar are tightened;
S8, welding sealing plates to two ends of the flange channel steel;
S9, injecting concrete into the flange channel steel through the feeding pipe;
And S9, after the concrete reaches the strength, screwing the screw cap again to enable the two side plates of the flange channel steel to extrude the reinforced concrete.
Compared with the prior art, the invention has the beneficial effects that: after the reinforced concrete in the flange channel steel is poured to reach the strength, the nuts at two ends of the connecting rib are screwed down, so that the flange channel steel side plate is subjected to inward extrusion force of the nuts, reinforced concrete is extruded inwards by the flange channel steel side wall, the reinforced concrete is subjected to prestress, and the time for destroying the reinforced concrete is delayed or the load capacity of the reinforced concrete is increased. 2. The connecting ribs are in close contact with the longitudinal steel bars, and simultaneously, the flange channel steel and the reinforced concrete inside the flange channel steel are firmly fixed together all the time due to the extrusion of the screw cap, so that the flange channel steel and the reinforced concrete inside the flange channel steel can synchronously and effectively exert transverse bending resistance and shearing resistance under the load action, and the problem that the flange channel steel or the reinforced concrete inside the flange channel steel is damaged in advance due to independent stress is solved.
Drawings
FIG. 1 is a schematic diagram of the transverse cross-sectional structure of the present invention.
3 fig. 3 2 3 is 3 a 3 schematic 3 structural 3 view 3 of 3 a 3 section 3 a 3- 3 a 3 in 3 fig. 3 1 3. 3
Detailed Description
The invention will now be further described in the following with reference to the accompanying drawings, in which reference is made to figures 1-2, in which embodiments of the invention are shown.
In order to solve the technical problem, the reinforcing structure for single plate stress of the bridge comprises a flange channel 210, steel flanges 211 at two sides, an upper end opening and a groove, wherein the opening is upward and is positioned under a hinge joint 111 and is tightly attached to the lower surface of a bridge plate 110, reinforced concrete 310 is filled in the groove, the steel flanges 211 are arranged at the top ends of side walls of the groove, the steel flanges 211 are fixed on the lower surface of the bridge plate 110, the reinforced concrete 310 comprises longitudinal steel bars 311, U-shaped stirrups 312 and concrete, the longitudinal steel bars 311 are longitudinally arranged along the groove, the longitudinal steel bars 311 are arranged in the U-shaped stirrups 312 and are in cross connection with the U-shaped stirrups 312, and two ends of the U-shaped stirrups 312 are fixedly fixed in the lower parts of the bridge plate 110 at two sides of the hinge joint 111. Closing plates 212 are arranged at the two longitudinal ends of the flange channel steel 210, a feeding pipe 213 is arranged at the upper part of the groove, and the feeding pipe 213 penetrates through the closing plates 212. Through holes 215 are formed in two side plates 214 of the groove of the flange channel steel 210, two ends 314 of a connecting rib 313 penetrate through the through holes 215 respectively, and threads and corresponding nuts 315 located on the outer side of the flange channel steel 210 are arranged at two ends 314 of the connecting rib 313.
After the nuts 315 at the two ends 314 of the connecting rib 313 are screwed, the flange channel 210 side plate 214 is subjected to inward extrusion force of the nuts 315, the flange channel 210 side plate 214 is subjected to inward extrusion force of the reinforced concrete 310, and the reinforced concrete 310 is subjected to transverse prestress, so that the time for damaging the reinforced concrete 310 when the single plate of the bridge plate 110 is stressed is delayed or the load capacity of the reinforced concrete 310 is increased; the connecting ribs 313 are in close contact with the longitudinal steel bars 311, and simultaneously, the flange channel steel 210 and the reinforced concrete 310 inside the flange channel steel are firmly fixed together all the time due to the extrusion of the screw caps 315, so that the flange channel steel 210 and the reinforced concrete 310 inside the flange channel steel can synchronously and effectively exert transverse bending resistance and shearing resistance under the load action, and the problem that the flange channel steel 210 or the reinforced concrete 310 inside the flange channel steel is damaged in advance due to independent stress is solved.
Preferably, the side plates 214 of the groove of the flange channel 210 are inclined towards the two outer sides, the connecting rib 313 is a bent reinforcing steel bar protruding upwards, the protruding part of the bent reinforcing steel bar is located above the longitudinal reinforcing steel bar 311, the two ends of the bent reinforcing steel bar are perpendicular to the side plates 214, and the reinforced concrete 310 is prestressed upwards in an inclined manner.
Preferably, both ends 314 of the longitudinal reinforcing bars 311 are bent downward and fixed to the inner bottom wall of the flange channel 210.
Preferably, the steel flange 211 is provided with a through hole, and the screw of the anchor bolt 216 passes through the through hole to fix the steel flange 211 to the lower surface of the bridge plate 110.
Preferably, an upward vertical rib 316 is fixedly disposed on a lower reinforcing bar of the U-shaped stirrup 312, the vertical rib 316 is used for positioning the longitudinal reinforcing bar 311, and the longitudinal reinforcing bar 311 is disposed between the vertical rib 316 and a side reinforcing bar of the U-shaped stirrup 312.
A method for reinforcing a reinforcing structure for bearing a single plate of a bridge comprises the following steps:
S1, pressing into a flange channel steel 210 according to the length and the structure of the single-span bridge.
S2, chiseling concrete on the surfaces of the bottom plates on two sides of the hinge joint 111 of the bridge plate 110, and drilling holes in the bottom plates according to the hole positions of the steel flanges 211 of the flange channel steel 210.
S3, placing the longitudinal reinforcing bars 311 between the vertical bars 316 and the side reinforcing bars of the U-shaped stirrup 312, and welding the longitudinal reinforcing bars 311 to the U-shaped stirrup 312.
And S4, cleaning and drilling holes, and smearing adhesive on the upper surface of the steel flange 211 and the lower surface corresponding to the bridge plate 110.
S5, enabling the through hole in the flange channel steel 210 to correspond to the drilled hole, and enabling the anchor bolt 216 to penetrate through the through hole and be fixedly implanted into the drilled hole.
And S6, welding two ends of the longitudinal steel bar 311 to the inner bottom wall of the flange channel steel 210.
S7, one end of the connecting rib 313 penetrates through the through hole 215 in one side of the flange channel steel 210 and passes through the upper portion of the longitudinal steel bar 311, and a strong magnet is placed outside the through hole in the other side of the flange channel steel 210. When the end of the connecting bar 313 approaches the strong magnet, the connecting bar is attracted into the through hole on the other side and then passes through the through hole on the other side, and the nuts 315 are screwed on two ends 314 of the connecting bar 313 until the connecting bar 313 and the longitudinal steel bar 311 are tightened.
And S8, welding closing plates 212 to two ends of the flange channel steel 210.
S9, injecting concrete into the flange channel steel 210 through the feed pipe 213.
And S9, after the concrete reaches the strength, screwing the screw cap 215 again to enable the two side plates 214 of the flange channel 210 to extrude the reinforced concrete 310.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (5)
1. A reinforcing structure for single plate stress of bridge comprises a flange channel steel, steel flanges, an opening and a groove, wherein the steel flanges are arranged on two sides of the flange channel steel, the opening is upward and is positioned right below a hinge joint, and clings to the lower surface of the bridge slab, reinforced concrete is filled in the groove, the top end of the side wall of the groove is provided with a steel flange which is fixed on the lower surface of the bridge slab, the reinforced concrete comprises longitudinal steel bars, U-shaped stirrups and concrete, the longitudinal steel bars are arranged along the longitudinal direction of the groove, the longitudinal steel bars are arranged in the U-shaped stirrups and are in cross connection with the U-shaped stirrups, the two ends of the U-shaped stirrups are fixedly and fixedly arranged in the lower parts of the bridge slab at the two sides of the hinge joint respectively, sealing plates are arranged at the two longitudinal ends of the flange channel steel, a feed pipe is arranged at the upper part of the groove and penetrates through the sealing plates, the flange channel steel structure is characterized in that through holes are formed in the side walls of the two sides of the flange channel steel groove, the two ends of the connecting rib penetrate through the through holes respectively, and threads and corresponding nuts located on the outer side of the flange channel steel are arranged at the two ends of the connecting rib.
2. The single-plate stress reinforcement structure of a bridge according to claim 1, wherein the side plates of the channel steel grooves of the flanges are inclined towards the two outer sides, the connecting bars are bent reinforcing bars protruding upwards, and the protruding parts of the bent reinforcing bars are positioned above the longitudinal reinforcing bars.
3. The reinforcing structure for single plate stress of bridge according to claim 1, wherein both ends of said longitudinal reinforcing bar are bent downward and fixed to the inner bottom wall of the flange channel.
4. The reinforcing structure for single plates of a bridge according to claim 1, wherein the steel flanges are provided with through holes, and the anchoring bolts and screws penetrate through the through holes to fix the steel flanges on the lower surface of the bridge plate.
5. The single-plate stress reinforcement structure of a bridge according to claim 1, wherein the lower reinforcement of the U-shaped stirrup is fixedly provided with an upward vertical reinforcement, and the longitudinal reinforcement is located between the vertical reinforcement and the side reinforcement of the U-shaped stirrup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922085771.6U CN211171671U (en) | 2019-11-28 | 2019-11-28 | Reinforced structure of bridge veneer atress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922085771.6U CN211171671U (en) | 2019-11-28 | 2019-11-28 | Reinforced structure of bridge veneer atress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211171671U true CN211171671U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922085771.6U Expired - Fee Related CN211171671U (en) | 2019-11-28 | 2019-11-28 | Reinforced structure of bridge veneer atress |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747760A (en) * | 2019-11-28 | 2020-02-04 | 台州学院 | Reinforcing structure and reinforcing method for single plate stress of bridge |
| CN111996924A (en) * | 2020-08-18 | 2020-11-27 | 孙启帆 | Strong bridge of stability is consolidated and is used corrosion reinforcing bar reinforcerment system |
-
2019
- 2019-11-28 CN CN201922085771.6U patent/CN211171671U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747760A (en) * | 2019-11-28 | 2020-02-04 | 台州学院 | Reinforcing structure and reinforcing method for single plate stress of bridge |
| CN111996924A (en) * | 2020-08-18 | 2020-11-27 | 孙启帆 | Strong bridge of stability is consolidated and is used corrosion reinforcing bar reinforcerment system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20200804 Termination date: 20211128 |