CN214695141U - Viaduct seamless expansion joint structure - Google Patents
Viaduct seamless expansion joint structure Download PDFInfo
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- CN214695141U CN214695141U CN202120763753.3U CN202120763753U CN214695141U CN 214695141 U CN214695141 U CN 214695141U CN 202120763753 U CN202120763753 U CN 202120763753U CN 214695141 U CN214695141 U CN 214695141U
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Abstract
The utility model discloses a seamless expansion joint structure of a viaduct bridge, which comprises a left bridge body, a right bridge body and a first pavement layer arranged on the top surfaces of the left bridge body and the right bridge body, wherein a structural joint is left between the left bridge body and the right bridge body; a placing groove is formed at the first paving layer above the construction seam, a base plate is arranged in the placing groove, and the base plate is erected above the construction seam and covers the construction seam; a telescopic connecting device is arranged in the placing groove, and the left bridge body and the right bridge body are connected in a sliding manner through the telescopic connecting device; an elastic-plastic mixed material layer is filled in the placing groove, and the telescopic connecting device is coated by the elastic-plastic mixed material layer; and a second paving layer is paved above the elastic-plastic mixed material layer, and the first paving layer of the top surface of the left bridge body and the first paving layer of the top surface of the right bridge body are connected through the second paving layer. The utility model discloses regard as elastic connection with the elastoplasticity mixture layer to strengthen the vertical support power of elastoplasticity mixture layer through flexible connecting device, can effectively improve the driving comfort level of expansion joint department when satisfying the flexible deformation demand of left and right pontic.
Description
Technical Field
The utility model relates to a road and bridge technical field especially relates to a viaduct seamless expansion joint structure.
Background
The expansion joint is a structural joint arranged at the two beam ends, between the beam ends and the abutment or at the hinged position of the bridge, and the bridge body structures at the two sides of the expansion joint can freely expand and contract at the expansion joint so as to meet the requirement of bridge deck deformation. The expansion joint structure is a telescopic device arranged at the expansion joint so as to connect bridge bodies on two sides of the expansion joint and ensure normal passing of vehicles. Under the influence of daily use and climate temperature change, the expansion joint structure can cause the bridge floor to produce the crack or destroy because of wearing and tearing or expend with heat and contract with cold, and then worsen the driving environment.
The existing expansion joint structure usually adopts an expansion device consisting of various mechanical components, has a complex structure, and is difficult to maintain when the performance is reduced due to aging. Based on this, prior art has provided an elastic plastic nature expansion joint again, adopts high-elastic high viscosity material as the binder, mixes with suitable aggregate according to certain proportion and forms, can absorb certain roof beam body and stretch out and draw back and warp, has better operability. However, the seamless expansion joint adopts the mode of integrally digging a rectangular groove and fully filling the high-elasticity and high-viscosity material after the connecting gap is plugged by the backing plate, the connectivity of the filled high-elasticity and high-viscosity material is weaker, the damping and shrinking effect is not strong enough, the flatness of the road surface can be influenced when the expansion joint is expanded, and the driving comfort is influenced.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a viaduct seamless expansion joint structure to above-mentioned problem, can carry out effective vertical support in expansion joint department, strengthens the connectivity of left and right pontic, improves the driving comfort level in expansion joint department.
The utility model discloses a following technical scheme realizes:
a viaduct seamless expansion joint structure comprises a left bridge body, a right bridge body and a first pavement layer arranged on the top surface of the left bridge body and the top surface of the right bridge body, wherein a structural joint is reserved between the left bridge body and the right bridge body; a placing groove is formed at the first paving layer above the construction seam, a base plate is arranged in the placing groove, and the base plate is erected above the construction seam and covers the construction seam; a telescopic connecting device is arranged in the placing groove, and the left bridge body and the right bridge body are connected in a sliding manner through the telescopic connecting device; an elastic-plastic mixed material layer is filled in the placing groove, and the telescopic connecting device is coated by the elastic-plastic mixed material layer; and a second paving layer is paved above the elastic-plastic mixed material layer, and the first paving layer of the top surface of the left bridge body and the first paving layer of the top surface of the right bridge body are connected through the second paving layer.
In one embodiment, the telescopic connection device comprises a first supporting piece, a second supporting piece and a plurality of sliding rods, wherein the first supporting piece is fixed on the side of the left bridge body and extends along the length direction of the construction seam, the second supporting piece is fixed on the side of the right bridge body and extends along the length direction of the construction seam, and the plurality of sliding rods are distributed between the first supporting piece and the second supporting piece at intervals along the length direction of the construction seam, penetrate through the first supporting piece and the second supporting piece perpendicular to the length direction of the construction seam and can slide between the first supporting piece and the second supporting piece.
In one embodiment, two ends of the sliding rod are respectively provided with a limiting part, and the two limiting parts are respectively positioned at the opposite outer sides of the first supporting part and the second supporting part.
In one embodiment, the first supporting member and the second supporting member are respectively located at two sides of the backing plate and are respectively spaced from the backing plate.
In one embodiment, the sliding rods are distributed at equal intervals along the length direction of the construction seam.
In one embodiment, anti-cracking pastes are distributed in the placing groove and are respectively arranged between the elastic-plastic mixture layer and the first paving layer, between the first paving layer and the second paving layer and between the second paving layer and the elastic-plastic mixture layer.
In one embodiment, the first pavement layer comprises an upper asphalt pavement layer and a lower concrete pavement layer, and the placing grooves are formed in the first pavement layer in a step shape with a wide upper part and a narrow lower part.
In one embodiment, the elastic-plastic mixture layer is arranged at the same height as the concrete pavement layer, and the second pavement layer is arranged at the same height as the asphalt pavement layer.
In one embodiment, the second paving layer is an SMA13 asphalt concrete paving layer.
Compared with the prior art, the technical scheme of the utility model following advantage and beneficial effect have at least:
the utility model discloses a elastoplasticity mixture layer is as the elastic connection of expansion joint department to set up flexible connecting device in the elastoplasticity mixture layer and connect left and right pontic, strengthen the vertical holding power of elastoplasticity mixture layer through flexible connecting device, can effectively improve the driving comfort level of expansion joint department; and the telescopic connecting device can longitudinally slide in the elastic-plastic mixture layer, so that the telescopic deformation requirements of the left and right bridge bodies are met, and the bridge has the advantages of reasonable design, simple structure and obvious effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a seamless expansion joint structure of a viaduct provided in an embodiment of the present invention;
fig. 2 is the embodiment of the utility model provides a viaduct seamless expansion joint structure lay the second layer of mating formation and the plan view when elasticity plastic mixture bed of material not.
Icon: 1-left bridge body, 2-right bridge body, 3-first pavement layer, 31-asphalt pavement layer, 32-concrete pavement layer, 41-structural joint, 42-placing groove, 5-backing plate, 6-telescopic connecting device, 61-first supporting piece, 62-second supporting piece, 63-sliding bar, 631-limiting part, 7-elastic-plastic mixed material layer, 8-second pavement layer and 9-anti-crack sticker.
Detailed Description
For making the purpose, technical scheme and advantage of the utility model clearer, will combine below the utility model discloses the embodiment of the embodiment in the figure carries out clearer, complete description to a viaduct seamless expansion joint structure. The preferred embodiments of the overpass seamless expansion joint structure are shown in the drawings, however, the overpass seamless expansion joint structure may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. The terms "central," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, when used in reference to a particular orientation or positional relationship, are used for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
In the description of the present invention, it should be further noted that the terms "disposed," "mounted," "connected," and "connected" used herein should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, the utility model provides a seamless expansion joint structure for viaducts, which comprises a left bridge body 1, a right bridge body 2 and a first pavement layer 3 arranged on the top surface of the left bridge body 1 and the top surface of the right bridge body 2, wherein a structural joint 41 is left between the left bridge body 1 and the right bridge body 2; a placing groove 42 is formed at the first paving layer 3 above the structural seam 41, a backing plate 5 is arranged in the placing groove 42, and the backing plate 5 is erected above the structural seam 41 and covers the structural seam 41; a telescopic connecting device 6 is arranged in the placing groove 42, and the left bridge body 1 and the right bridge body 2 are connected in a sliding manner through the telescopic connecting device 6; the placing groove 42 is filled with an elastic-plastic mixed material layer 7, and the telescopic connecting device 6 is coated by the elastic-plastic mixed material layer 7; and a second paving layer 8 is paved above the elastic-plastic mixed material layer 7, and the second paving layer 8 is connected with the first paving layer 3 on the top surfaces of the left bridge body 1 and the right bridge body 2.
It can be understood that, the left bridge body 1 and the right bridge body 2 can be of two-beam-end structure or of beam-end structure and abutment structure, the elastic-plastic mixed material layer 7 is used as elastic connection at the expansion joint, the telescopic connection device 6 is arranged in the elastic-plastic mixed material layer 7 to connect the left bridge body 2 and the right bridge body 2, the vertical support force of the elastic-plastic mixed material layer 7 is enhanced by the telescopic connection device 6, and the driving comfort at the expansion joint can be effectively improved; and the telescopic connecting device 6 can longitudinally slide in the elastic-plastic mixed material layer 7, so that the requirements of the left bridge body 2 and the right bridge body 2 on telescopic deformation are met.
Specifically, as shown in fig. 1 and 2, the telescopic connection device 6 includes a first support 61, a second support 62, and a plurality of sliding rods 63, wherein the first support 61 is fixed on the side of the left bridge body 1 and extends along the length direction of the construction seam 41, the second support 62 is fixed on the side of the right bridge body 2 and extends along the length direction of the construction seam 41, and the plurality of sliding rods 63 are spaced between the first support 61 and the second support 62 along the length direction of the construction seam 41, preferably are spaced at equal intervals along the length direction of the construction seam 41, penetrate through the first support 61 and the second support 62 perpendicular to the length direction of the construction seam 41, and are slidable between the first support 61 and the second support 62. Specifically, in this embodiment, the first supporting member 61 and the second supporting member 62 are parallel angle steels, the lower side of each angle steel is fixedly connected to the bridge body through an expansion bolt, the sliding rod 63 is perpendicular to and penetrates through the upper side of each angle steel and can slide between the two parallel angle steels, and after the angle steels and the sliding rod 63 are covered and wrapped by the elastic-plastic mixture layer 7, the sliding connection between the angle steels and the sliding rod 63 is not affected.
Further, as shown in fig. 1 and fig. 2, two ends of the sliding rod 63 are respectively provided with a limiting portion 631, and the two limiting portions 631 are respectively located at the opposite outer sides of the first supporting member 61 and the second supporting member 62 to limit the elastic expansion range of the bridge body, so as to avoid excessive separation of the left and right bridge bodies.
Further, as shown in fig. 1 and 2, the first supporting member 61 and the second supporting member 62 are respectively located at two sides of the pad 5, and are respectively spaced from the pad 5, that is, a sufficient distance is left between the supporting members and the pad 5, for example, a distance of 25mm is provided between the first supporting member 61 and the pad 5, and a distance of 25mm is also provided between the second supporting member 62 and the pad 5, that is, a movement displacement of 50mm is provided, so as to prevent the supporting members from contacting the pad 5 to generate a pressing force when the bridge body is deformed.
Further, as shown in fig. 1, anti-cracking tapes 9 are disposed in the placing groove 42, and the anti-cracking tapes 9 are respectively disposed between the elastic-plastic mixture layer 7 and the first paving layer 3, between the first paving layer 3 and the second paving layer 8, and between the second paving layer 8 and the elastic-plastic mixture layer 7, so as to provide effective anti-cracking and waterproof measures at the joints between the layers.
Further, as shown in fig. 1, the first pavement layer 3 includes an asphalt pavement layer 31 on the upper layer and a concrete pavement layer 32 on the lower layer, and the placing groove 42 is formed in the first pavement layer 3 in a step shape with a wide upper part and a narrow lower part, so that polishing of the section formed by the placing groove 42 is facilitated, and the original pavement layer (the first pavement layer 3) and the new pavement layer (the second pavement layer 8) can be perfectly and effectively matched.
Further, as shown in fig. 1, on the basis of the step-shaped placement grooves 42, the elastic-plastic mixture layer 7 and the concrete pavement layer 32 are arranged at the same height, so that the second pavement layer 8 can take the concrete pavement layer 32 as a bearing surface, and the vertical pressure on the elastic-plastic mixture layer 7 is reduced; the second pavement layer 8 and the asphalt pavement layer 31 are arranged at the same height so as to ensure the smooth pavement and improve the driving comfort degree at the expansion joint.
Further, as shown in fig. 1, the second pavement layer 8 is an SMA13 asphalt concrete pavement layer 32, which has higher strength, higher rigidity, better wear resistance and high temperature stability than the asphalt pavement layer 31, and can effectively protect the lower elastic-plastic mixture layer 7.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A viaduct seamless expansion joint structure is characterized by comprising a left bridge body, a right bridge body and a first pavement layer arranged on the top surface of the left bridge body and the top surface of the right bridge body, wherein a structural joint is reserved between the left bridge body and the right bridge body; a placing groove is formed above the construction seam at the first paving layer, a base plate is arranged in the placing groove, and the base plate is erected above the construction seam and covers the construction seam; a telescopic connecting device is arranged in the placing groove, and the left bridge body and the right bridge body are connected in a sliding manner through the telescopic connecting device; an elastic-plastic mixed material layer is filled in the placing groove, and the telescopic connecting device is coated by the elastic-plastic mixed material layer; and a second paving layer is paved above the elastic-plastic mixed material layer, and the second paving layer is connected with the first paving layer on the top surface of the left bridge body and the first paving layer on the top surface of the right bridge body.
2. The viaduct seamless expansion joint structure of claim 1, wherein the expansion joint device comprises a first supporting member, a second supporting member and a plurality of sliding rods, the first supporting member is fixed on the side of the left bridge body and extends along the length direction of the construction joint, the second supporting member is fixed on the side of the right bridge body and extends along the length direction of the construction joint, and the plurality of sliding rods are distributed between the first supporting member and the second supporting member at intervals along the length direction of the construction joint, penetrate through the first supporting member and the second supporting member perpendicular to the length direction of the construction joint, and can slide between the first supporting member and the second supporting member.
3. The viaduct seamless expansion joint structure of claim 2, wherein two ends of the sliding rod are respectively provided with a limiting portion, and the two limiting portions are respectively located at the opposite outer sides of the first supporting member and the second supporting member.
4. The viaduct seamless expansion joint structure of claim 3, wherein the first supporting member and the second supporting member are respectively located at two sides of the base plate and are respectively spaced from the base plate.
5. The viaduct seamless expansion joint structure of claim 2, wherein the plurality of sliding rods are equidistantly spaced along the length direction of the construction joint.
6. The viaduct seamless expansion joint structure of claim 1, wherein the placing groove is internally provided with anti-crack pasters, and the anti-crack pasters are respectively arranged between the elastic-plastic mixture layer and the first pavement layer, between the first pavement layer and the second pavement layer, and between the second pavement layer and the elastic-plastic mixture layer.
7. The viaduct seamless expansion joint structure of any one of claims 1 to 5, wherein the first pavement layer comprises an upper asphalt pavement layer and a lower concrete pavement layer, and the placement groove is formed in the first pavement layer in a step shape with a wide upper part and a narrow lower part.
8. The viaduct seamless expansion joint structure of claim 7, wherein the elastic-plastic mixture layer is disposed at the same height as the concrete pavement layer, and the second pavement layer is disposed at the same height as the asphalt pavement layer.
9. The viaduct seamless expansion joint structure of claim 1, wherein the second pavement layer is an SMA13 asphalt concrete pavement layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120763753.3U CN214695141U (en) | 2021-04-14 | 2021-04-14 | Viaduct seamless expansion joint structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120763753.3U CN214695141U (en) | 2021-04-14 | 2021-04-14 | Viaduct seamless expansion joint structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673081A (en) * | 2022-04-24 | 2022-06-28 | 上海市城市建设设计研究总院（集团）有限公司 | Seamless processing noise reduction bridge expansion device |
| CN114855605A (en) * | 2022-03-04 | 2022-08-05 | 浙江科技学院 | Assembly type integrated elastic body seamless expansion joint structure |
| CN117468503A (en) * | 2023-11-14 | 2024-01-30 | 青岛文德超建筑工程有限公司 | Ultra-long concrete expansion joint-free structure and construction process thereof |
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2021
- 2021-04-14 CN CN202120763753.3U patent/CN214695141U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855605A (en) * | 2022-03-04 | 2022-08-05 | 浙江科技学院 | Assembly type integrated elastic body seamless expansion joint structure |
| CN114673081A (en) * | 2022-04-24 | 2022-06-28 | 上海市城市建设设计研究总院（集团）有限公司 | Seamless processing noise reduction bridge expansion device |
| CN114673081B (en) * | 2022-04-24 | 2024-01-05 | 上海市城市建设设计研究总院（集团）有限公司 | Noise reduction bridge expansion device with seamless processing |
| CN117468503A (en) * | 2023-11-14 | 2024-01-30 | 青岛文德超建筑工程有限公司 | Ultra-long concrete expansion joint-free structure and construction process thereof |
| CN117468503B (en) * | 2023-11-14 | 2024-03-19 | 青岛文德超建筑工程有限公司 | Ultra-long concrete expansion joint-free structure and construction process thereof |
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Address after: 610047 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Patentee after: Sichuan Communications Construction Group Co.,Ltd. Address before: 610041 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Patentee before: Sichuan Communications Construction Group Co.,Ltd. |