CN114717934B - Bridge expansion joint structure and construction method thereof - Google Patents
Bridge expansion joint structure and construction method thereof Download PDFInfo
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- CN114717934B CN114717934B CN202210390718.0A CN202210390718A CN114717934B CN 114717934 B CN114717934 B CN 114717934B CN 202210390718 A CN202210390718 A CN 202210390718A CN 114717934 B CN114717934 B CN 114717934B
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/062—Joints having intermediate beams
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a bridge expansion joint structure and a construction method thereof, which adopts a cross support mode to support a middle beam of the expansion joint structure, so that when the corresponding beam end is longitudinally deformed to generate a height difference, the middle beam is inclined to generate a certain gradient, thereby reducing the impact of a vehicle in the passing process, improving the safety and reducing the loss of the expansion joint structure; in addition, the bottom of the expansion joint is also provided with a compensation supporting structure for compensating the cross supporting structure, the compensation supporting structure can adjust the cross point of the cross supporting structure, so that the middle beam can be maintained at the same horizontal height with the bridge deck no matter the beam end extends or contracts, and the overall stability of the expansion joint is ensured.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a bridge expansion joint structure and a construction method thereof.
Background
The bridge expansion joint is to meet the requirement of bridge deck deformation, and the expansion joint is set between two beam ends, between beam end and bridge abutment or in the hinge joint position of bridge, and can be expanded and contracted freely in two directions parallel and perpendicular to the axis of bridge, so that it is firm and reliable, and the vehicle should be smooth and free from jump and noise during running.
The existing bridge expansion joints mainly comprise butt joint type, steel supporting type, combined shearing type, module supporting type and other types, and the structural form and the stress characteristics of each type of bridge expansion joint are different.
However, the bridge deck of the existing bridge expansion joint is deformed in the horizontal direction, namely in the parallel direction, and for the deformation perpendicular to the bridge axis, the deformation is relatively small, and most bridge expansion joint structures are selectively ignored, but in actual use, the deformation perpendicular to the bridge axis direction is also not ignored, the deformation can be the horizontal drop between the bridge end faces, a certain impact can be generated when a vehicle passes through, on one hand, potential safety hazards can be brought to the vehicle, and on the other hand, the aging and abrasion of the expansion joint mechanisms can be accelerated under the action of the impact.
Disclosure of Invention
The invention relates to a bridge expansion joint structure and a construction method thereof, which adopts a cross support mode to support a middle beam of the expansion joint structure, so that when the corresponding beam end is longitudinally deformed to generate a height difference, the middle beam is inclined to generate a certain gradient, thereby reducing the impact of a vehicle in the passing process, improving the safety and reducing the loss of the expansion joint structure; in addition, the bottom of the expansion joint is also provided with a compensation supporting structure for compensating the cross supporting structure, the compensation supporting structure can adjust the cross point of the cross supporting structure, so that the middle beam can be maintained at the same horizontal height with the bridge deck no matter the beam end extends or contracts, and the overall stability of the expansion joint is ensured.
The invention adopts the following technical scheme:
a bridge expansion joint structure comprises side beams and a middle beam.
The side beams are symmetrically arranged, the middle beam is arranged between the two side beams, and the bottom of the middle beam is supported on the side beams through a cross supporting structure; the top of the middle beam is flush with the top of the side beam, and the two sides of the side beam are respectively provided with an anchor rib; the bottom of the cross supporting structure is also provided with a compensation supporting structure, and the height of the cross point in the cross supporting structure is adjusted by the compensation supporting structure.
The cross support structure comprises a plurality of uniformly distributed support plates; the edge beam is provided with hinge seats which are uniformly distributed, and the bottom of the supporting plate is hinged in the hinge seats; the bottom of the middle beam is provided with a sliding seat, the sliding seat is mutually perpendicular to the middle beam, a sliding block is arranged in the sliding seat, and the top of the supporting plate is hinged to the sliding block; the two ends of the sliding seat are closed, and a supporting spring is arranged between the sliding block and the end part of the sliding seat.
The bottoms of the adjacent support plates are respectively hinged on hinge supports corresponding to opposite side beams, and the tops of the support plates incline towards the opposite side beams and are hinged to sliding blocks corresponding to the bottoms of the middle beams; and transverse supporting columns are arranged at the crossing points of the supporting plates, and the compensating supporting structures are supported to the supporting columns.
Further, the middle part of the supporting plate is provided with a chute in accordance with the direction of the supporting plate, and the supporting columns are supported in the corresponding chute of each supporting plate.
The compensating support structure comprises an inverted T-shaped bracket; the bottom of each boundary beam is provided with a limiting plate, the limiting plate is provided with an inclined chute inclined to the inner side, and the inclined chute corresponding to the two boundary beams is splayed integrally; the sliding columns are respectively arranged at two sides of the bottom of the T-shaped bracket, and the sliding columns at two sides are respectively matched with the inclined sliding grooves at the corresponding sides; the support column passes through the top of the T-shaped bracket; the compensating support structure is arranged between the adjacent support plates.
The compensating support structure is also provided with a positioning device for limiting the angle of the compensating support structure.
The positioning device comprises a T-shaped limiting frame, a transverse bar-shaped hole is further formed in a limiting plate below the inclined sliding groove, and sliding columns corresponding to the bar-shaped holes are respectively arranged on two sides of the T-shaped limiting frame; a longitudinal sliding hole is formed in the center of the bottom of the T-shaped bracket, and a limiting column matched with the sliding hole is arranged in the center of the top of the T-shaped limiting frame; the sliding hole and the limiting column are both square structures.
C-shaped grooves corresponding to each other are respectively formed in the two sides of the top of the middle beam and the inner side of the top of the side beam, V-shaped rubber water stops are arranged between the C-shaped grooves corresponding to the middle beam and the side beam, and fixed ends fixed in the C-shaped grooves are respectively arranged on the two sides of the rubber water stops; the bottom of the C-shaped groove is provided with evenly distributed water draining holes, and the water draining holes are communicated between the side beams and the middle beam.
The edge beam is of a two-layer step structure, and bottoms of the two layers of steps corresponding to the edge beam are of inclined downward structures; the hinged support is arranged in the step at the lower layer; the whole hinged support is triangular structure, and two side edges of the hinged support correspond to the side edge and the bottom edge of the lower-layer step respectively, and the inclined edge of the hinged support and the bottom of the upper-layer step are located on the same inclined plane.
A construction method of a bridge expansion joint structure comprises the following steps: the method comprises the steps of reserving a step part corresponding to the boundary beam at the end part of the bridge, welding the anchoring rib at the outer side of the boundary beam with the reserved reinforcing steel bar at the end part of the bridge, and finally pouring building materials such as concrete or asphalt between the end part of the bridge and the boundary beam and vibrating and tamping to finish the construction of the bridge expansion joint structure.
The technical scheme adopted by the invention has the following beneficial effects:
the device supports the middle beams in a cross supporting mode, the top of the cross supporting structure is provided with the sliding block structure, and after the bridge is installed, the corresponding middle beams can keep a stable horizontal structure when the bridge stretches out and draws back; the bottom is provided with a compensation supporting structure, and when the bridge stretches, the compensation supporting device carries out up-and-down adjustment on the position of the cross supporting point of the cross supporting device, so that the horizontal position of the top of the middle beam and the bridge surface is ensured; the compensation supporting device is matched with the positioning device to fix the position of the compensation supporting device, so that the unstable phenomenon of the middle beam is prevented.
When the two side end beams corresponding to the bridge expansion joint have high and low position differences, the middle beam can incline so as to form a slope-shaped structure, and the impact can be effectively reduced when a vehicle passes through; the water draining hole in the C-shaped groove can lead out and drain the accumulated water when the accumulated water appears in the inside, so that the corrosion phenomenon caused by local accumulated water is prevented.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a bottom schematic view of fig. 1.
Fig. 3 is a schematic exploded view of the present invention.
Fig. 4 is a bottom schematic view of fig. 3.
Fig. 5 is a schematic view of a T-bracket and T-stop.
FIG. 6 is a schematic diagram of a slider and a slider.
In the figure:
1. edge beams; 101. an anchoring rib;
2. edge beams; 201. a slide; 202. a support spring;
3. a cross support structure; 301. a support plate; 302. a hinged support; 303. a slide block; 304. a support column; 305. a chute;
4. a compensating support structure; 401. a T-shaped bracket; 402. a limiting plate; 403. an inclined chute; 404. a first strut; 405. a slide hole;
5. a positioning device; 501. a T-shaped limit frame; 502. a bar-shaped hole; 503. a second strut; 504. a limit column;
6. a C-shaped groove; 601. a rubber water stop; 602. a fixed end; 603. and a water outlet.
Detailed Description
The invention is further described below with reference to the drawings and examples.
The bridge expansion joint structure shown in fig. 1-6 comprises a side beam 1 and a middle beam 2.
The side beams 1 are symmetrically arranged, the middle beam 2 is arranged between the two side beams 1, and the bottom of the middle beam 2 is supported on the side beams 1 through a cross supporting structure 3; the top of the middle beam 2 is flush with the top of the side beam 1, and the two sides of the side beam 1 are respectively provided with an anchor rib 101; the bottom of the cross support structure 3 is also provided with a compensation support structure 4, and the compensation support structure 4 adjusts the height of the crossing point in the cross support structure 3.
The cross support structure 3 comprises a plurality of evenly distributed support plates 301; the edge beam 1 is provided with hinge seats 302 which are uniformly distributed, and the bottom of the supporting plate 301 is hinged in the hinge seats 302; the bottom of the middle beam 2 is provided with a sliding seat 201, the sliding seat 201 is perpendicular to the middle beam 2, a sliding block 303 is arranged in the sliding seat 201, and the top of a supporting plate 301 is hinged to the sliding block 303; the two ends of the sliding seat 201 are closed, and a supporting spring 202 is arranged between the sliding block 303 and the end part of the sliding seat 201.
Among the plurality of support plates 301, adjacent support plates 301 are arranged to cross each other on the end surfaces, the bottoms of the adjacent support plates 301 are respectively hinged on the hinge bases 302 corresponding to the opposite side beams 1, and the tops of the support plates 301 are inclined towards the opposite side beams 1 and are hinged to the sliding blocks 303 corresponding to the bottoms of the middle beams 2; transverse support columns 304 are provided at the intersections of the support plates 301, the compensating support structures 4 being supported to the support columns 304.
Further, a sliding groove 305 is provided in the middle of the supporting plate 301, and the supporting columns 304 are supported in the sliding grooves 305 corresponding to the supporting plates 301.
The compensating support structure 4 comprises an inverted T-shaped support 401; the bottom of each side beam 1 is provided with a limiting plate 402, the limiting plates 402 are provided with inclined sliding grooves 403 inclined to the inner side, and the inclined sliding grooves 403 corresponding to the two side beams 1 are in a splayed shape as a whole; the two sides of the bottom of the T-shaped bracket 401 are respectively provided with a first sliding column 404, and the first sliding columns 404 on the two sides are respectively matched with the inclined sliding grooves 403 on the corresponding sides; the supporting column 304 passes through the top of the T-shaped bracket 401; the compensating support structures 4 are arranged between adjacent support plates 301.
The compensating support structure 4 is also provided with a positioning device 5 for limiting the angle thereof.
The positioning device 5 comprises a T-shaped limiting frame 501, a transverse bar-shaped hole 502 is further arranged on the limiting plate 402 below the inclined sliding groove 403, and second sliding columns 503 corresponding to the bar-shaped hole 502 are respectively arranged on two sides of the T-shaped limiting frame 501; a longitudinal sliding hole 405 is arranged at the bottom center of the T-shaped bracket 401, and a limiting column 504 matched with the sliding hole 405 is arranged at the top center of the T-shaped limiting frame 501; the sliding hole 405 and the limiting post 504 are both square structures.
C-shaped grooves 6 corresponding to each other are respectively arranged on the two sides of the top of the middle beam 2 and the inner side of the top of the side beam 1, a V-shaped rubber water stop belt 601 is arranged between the C-shaped grooves 6 corresponding to the middle beam 2 and the side beam 1, and fixed ends 602 fixed in the C-shaped grooves 6 are respectively arranged on the two sides of the rubber water stop belt 601; the bottom of the C-shaped groove 6 is provided with evenly distributed water draining holes 603, and the water draining holes 603 are communicated between the side beam 1 and the middle beam 2.
The edge beam 1 is of a two-layer step structure, and bottoms of the two layers of steps corresponding to the edge beam 1 are of inclined downward structures; the hinged support 302 is arranged in the step of the lower layer; the whole hinge support 302 is in a triangle structure, two sides of the hinge support 302 correspond to the side and the bottom of the lower step respectively, and the inclined side of the hinge support 302 and the bottom of the upper step are positioned on the same inclined plane.
When the bridge expansion joint structure is installed, a step part corresponding to the boundary beam 1 is reserved at the end part of the bridge, then the anchoring ribs 101 at the outer side of the boundary beam 1 are welded with the reserved reinforcing steel bars at the end part of the bridge, and finally building materials such as concrete or asphalt are poured between the end part of the bridge and the boundary beam 1 and vibration tamping is carried out, so that the bridge expansion joint structure is completed.
In the practical use process, the inclined support plates are supported to the sliding blocks close to the opposite sides, the adjacent support plates are arranged in a mutually crossed mode, the crossed angle of the adjacent support plates is adjusted through the height of the support columns, and the height of the middle beam is controlled.
When the adjacent end beams extend or shrink, the corresponding side beams are close to or far away from each other, at the moment, the corresponding hinged supports on the side beams are also close to or far away from each other, so that the cross angle of the adjacent support plates can be changed, and if the positions of the support points for supporting the support plates by the support columns are fixed, the middle beams can be driven to rise or fall by moving the hinged supports, so that an uneven structure is formed. In order to avoid the phenomenon, a compensation supporting device is arranged to adjust the position of the supporting column, and the corresponding sliding groove ensures the realization of the adjusting mechanism. When the boundary beams are close, the crossed structure between the supporting plates drives the middle beam to ascend, the inclined sliding grooves on the limiting plates are close to each other, and the first sliding columns on the corresponding T-shaped brackets move in the inclined sliding grooves, so that the T-shaped brackets move downwards integrally, the supporting columns are driven to move downwards, and the whole middle beam is always kept at the same height in the process; similarly, when the side beams are far away from each other, the T-shaped support ascends to drive the support column to ascend, so that the top of the middle beam is kept at the same height.
The positioning device is arranged on the compensation supporting device, the main purpose is to prevent the T-shaped bracket from displacement in the use process, after the positioning device is arranged, the second sliding column on the positioning device is matched with the corresponding strip-shaped hole, and the limiting column is used for limiting the sliding hole of the T-shaped bracket, so that the T-shaped bracket is limited jointly, is kept at a horizontal position, and can be inclined at an angle only when the boundary beam longitudinally displaces.
When the adjacent end beams longitudinally displace, under the cooperation of the positioning device and the compensation supporting device, the T-shaped support is correspondingly inclined, and then the corresponding supporting column deviates from the original longitudinal axis, at the moment, the middle beam is correspondingly inclined under the action of the supporting plate, and an inclined structure is formed between the two side beams, so that the impact is reduced when a vehicle passes, and the effects of ensuring safety and reducing loss are achieved.
Claims (6)
1. The utility model provides a bridge expansion joint structure, it includes boundary beam and center sill, its characterized in that: the side beams are symmetrically arranged, the middle beam is arranged between the two side beams, and the bottom of the middle beam is supported on the side beams through a cross supporting structure; the top of the middle beam is flush with the top of the side beam, and the two sides of the side beam are respectively provided with an anchor rib; the bottom of the cross supporting structure is also provided with a compensation supporting structure, and the compensation supporting structure adjusts the height of the crossing point in the cross supporting structure; the cross support structure comprises a plurality of uniformly distributed support plates; the edge beam is provided with hinge seats which are uniformly distributed, and the bottom of the supporting plate is hinged in the hinge seats; the bottom of the middle beam is provided with a sliding seat, the sliding seat is mutually perpendicular to the middle beam, a sliding block is arranged in the sliding seat, and the top of the supporting plate is hinged to the sliding block; the two ends of the sliding seat are closed, and a supporting spring is arranged between the sliding block and the end part of the sliding seat; the bottoms of the adjacent support plates are respectively hinged on hinge supports corresponding to opposite side beams, and the tops of the support plates incline towards the opposite side beams and are hinged to sliding blocks corresponding to the bottoms of the middle beams; a transverse support column is arranged at the intersection point of the support plates, and the compensation support structure is supported to the support column; the middle part of the supporting plate is provided with a sliding groove in the same direction as the supporting plate, and the supporting columns are supported in the sliding grooves corresponding to the supporting plates; the compensating support structure comprises an inverted T-shaped bracket; the bottom of each boundary beam is provided with a limiting plate, the limiting plate is provided with an inclined chute inclined to the inner side, and the inclined chute corresponding to the two boundary beams is splayed integrally; the sliding columns are respectively arranged at two sides of the bottom of the T-shaped bracket, and the sliding columns at two sides are respectively matched with the inclined sliding grooves at the corresponding sides; the support column passes through the top of the T-shaped bracket; the compensating support structure is arranged between the adjacent support plates.
2. A bridge expansion joint structure according to claim 1, wherein: the compensating support structure is also provided with a positioning device for limiting the angle of the compensating support structure.
3. A bridge expansion joint structure according to claim 2, wherein: the positioning device comprises a T-shaped limiting frame, a transverse bar-shaped hole is further formed in a limiting plate below the inclined sliding groove, and sliding columns corresponding to the bar-shaped holes are respectively arranged on two sides of the T-shaped limiting frame; a longitudinal sliding hole is formed in the center of the bottom of the T-shaped bracket, and a limiting column matched with the sliding hole is arranged in the center of the top of the T-shaped limiting frame; the sliding hole and the limiting column are both square structures.
4. A bridge expansion joint structure according to claim 3, wherein: c-shaped grooves corresponding to each other are respectively formed in the two sides of the top of the middle beam and the inner side of the top of the side beam, V-shaped rubber water stops are arranged between the C-shaped grooves corresponding to the middle beam and the side beam, and fixed ends fixed in the C-shaped grooves are respectively arranged on the two sides of the rubber water stops; the bottom of the C-shaped groove is provided with evenly distributed water draining holes, and the water draining holes are communicated between the side beams and the middle beam.
5. The bridge expansion joint structure according to claim 4, wherein: the edge beam is of a two-layer step structure, and bottoms of the two layers of steps corresponding to the edge beam are of inclined downward structures; the hinged support is arranged in the step at the lower layer; the whole hinged support is triangular structure, and two side edges of the hinged support correspond to the side edge and the bottom edge of the lower-layer step respectively, and the inclined edge of the hinged support and the bottom of the upper-layer step are located on the same inclined plane.
6. A method of constructing a bridge expansion joint structure according to any one of claims 1 to 5, wherein: it comprises the following steps: the method comprises the steps of reserving a step part corresponding to the boundary beam at the end part of the bridge, welding the anchoring rib at the outer side of the boundary beam with the reserved reinforcing steel bar at the end part of the bridge, and finally pouring concrete or asphalt building materials between the end part of the bridge and the boundary beam and vibrating and tamping to finish the construction of the bridge expansion joint structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390718.0A CN114717934B (en) | 2022-04-14 | 2022-04-14 | Bridge expansion joint structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390718.0A CN114717934B (en) | 2022-04-14 | 2022-04-14 | Bridge expansion joint structure and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114717934A CN114717934A (en) | 2022-07-08 |
| CN114717934B true CN114717934B (en) | 2023-07-14 |
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| CN202210390718.0A Active CN114717934B (en) | 2022-04-14 | 2022-04-14 | Bridge expansion joint structure and construction method thereof |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6460214B1 (en) * | 2001-03-27 | 2002-10-08 | Ming-Huang Chang | Vibration resistive instant responding roadway or bridge expansion joint and construction method of the same |
| CN205934710U (en) * | 2016-08-04 | 2017-02-08 | 何逸扬 | Adjustable horizontally's bridge expansion joint device |
| CN109440637A (en) * | 2018-12-19 | 2019-03-08 | 衡水中铁建工程橡胶有限责任公司 | A kind of highway bridge antidetonation telescopic device |
| CN110700090A (en) * | 2019-10-31 | 2020-01-17 | 武汉东九永环工程技术有限公司 | Steel wire rope damping and shock-absorbing expansion joint and bridge |
| CN112048999B (en) * | 2020-10-20 | 2022-02-15 | 济南黄河路桥建设集团有限公司 | Road bridge extending structure for preventing vehicle bump at bridge head |
| CN214656332U (en) * | 2021-02-07 | 2021-11-09 | 江苏布朗新材料科技有限公司 | Displacement control mechanism of modulus type telescopic device |
| CN112853961A (en) * | 2021-03-02 | 2021-05-28 | 冉维彬 | Equidistant displacement bridge expansion joint device |
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2022
- 2022-04-14 CN CN202210390718.0A patent/CN114717934B/en active Active
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