CN216689032U - Bridge pavement widening structure for reconstructing and expanding ramp - Google Patents
Bridge pavement widening structure for reconstructing and expanding ramp Download PDFInfo
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- CN216689032U CN216689032U CN202220179509.7U CN202220179509U CN216689032U CN 216689032 U CN216689032 U CN 216689032U CN 202220179509 U CN202220179509 U CN 202220179509U CN 216689032 U CN216689032 U CN 216689032U
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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
Abstract
The utility model discloses a bridge pavement widening structure for reconstructing and expanding ramp roads, which comprises an old bridge box girder plate, an old bridge asphalt pavement layer, a newly-built ramp box girder plate, a high-strength steel wire mesh, a UHPC (ultra high performance concrete) cushion layer, a steel plate, an anchor bolt and a newly-built ramp asphalt pavement layer. The utility model has the beneficial effects that: the UHPC coated steel plate is used as a wide splicing area asphalt pavement cushion layer, so that the stability of the wide splicing area asphalt pavement cushion layer is enhanced; the shear strength of the connection interface of the UHPC cushion layer and the asphalt pavement is enhanced, and cracks are effectively prevented from being generated at the connection interface.
Description
[ technical field ] A
The utility model relates to the field of building engineering, in particular to a bridge pavement widening structure for reconstructing and expanding ramp roads.
[ background of the utility model ]
With the advance of urbanization progress and vigorous development of economy in China, people have increasingly greater demands on traffic, and in order to further improve the traffic conversion function of a bridge, an intercommunicating ramp is additionally arranged on an existing bridge, but in a road surface widening section of the intercommunicating ramp and the bridge, a road surface splicing part usually adopts a steel plate and UHPC as a connecting cushion layer to realize road surface lapping so as to ensure that the road surface is smooth and stable.
[ Utility model ] content
The utility model aims to provide a bridge pavement widening structure for changing and extending ramps, which is long in service life and good in splicing effect.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the bridge pavement widening structure comprises an old bridge box girder plate, an old bridge asphalt pavement layer, a newly-built ramp box girder plate, a high-strength steel wire mesh, a UHPC (ultra high performance concrete) cushion layer, a steel plate, anchor bolts and a newly-built ramp asphalt pavement layer, wherein the old bridge box girder plate is spliced with the newly-built ramp box girder plate, two ends of the steel plate are respectively fixed on the old bridge box girder plate and the newly-built ramp box girder plate through the anchor bolts, the UHPC cushion layer is laid above the steel plate, the steel plate is wrapped in the UHPC cushion layer, the old bridge asphalt pavement layer is laid on the old bridge box girder plate, the newly-built ramp box girder plate is laid on the newly-built ramp box girder plate and wraps the UHPC cushion layer, one end of the high-strength steel wire mesh is embedded in the UHPC cushion layer, and the other end of the steel wire mesh is embedded in the newly-built ramp asphalt pavement layer.
As a preferable improvement of the utility model, the old bridge asphalt pavement layer and the newly-built ramp asphalt pavement layer are spliced by adopting a vertical seam.
As a preferred improvement of the utility model, the left end and the right end of the UHPC cushion layer and the newly-built ramp asphalt pavement layer are spliced by adopting oblique seams, and the inclination angle of the oblique seams is 30-45 degrees.
As a preferable improvement of the utility model, the two ends of the steel plate are provided with bolt holes matched with the anchor bolts.
As a preferable improvement of the utility model, each end of the steel plate is provided with at least two rows of bolt holes which are arranged in parallel with the end edge at intervals, and the distance between adjacent bolt holes is 30 cm-50 cm.
As a preferable improvement of the utility model, the high-strength steel wire mesh is made of steel wires with the diameter of 0.8-1 mm, and the mesh size is 5-8 mm in length and 5-8 mm in width.
As a preferable improvement, the high-strength steel wire mesh is provided with 2-3 layers.
As a preferable improvement of the utility model, the high-strength steel wire mesh is embedded in the newly-built ramp asphalt pavement layer to a depth of 7-10 cm, and is embedded in the UHPC cushion layer to a depth of 7-10 cm.
As a preferred improvement of the utility model, the thickness of the UHPC cushion layer is 3.5 cm-4 cm.
As a preferable improvement of the utility model, the thickness of the old bridge asphalt pavement layer and the newly-built ramp asphalt pavement layer is 8-11 cm.
The utility model has the technical effects that:
(1) connect stably, the transition is smooth-going: the high-strength steel wire mesh is arranged between the UHPC cushion layer and the newly-built ramp asphalt pavement layer, so that the connection between the UHPC cushion layer and the newly-built ramp asphalt pavement layer is enhanced, the connection between a new box girder and an old box girder is enhanced by adopting a steel plate, the connection between the newly-built ramp and an old bridge is effectively improved, and the smooth and stable transition section can be ensured by the combination body of the UHPC and the steel plate;
(2) simple structure, it is convenient to be under construction: the width splicing structure has simple structure, small construction difficulty and easy popularization;
(3) good durability and low cost: the UHPC cushion layer has stronger sealing performance and durability, can effectively avoid rainwater from permeating into a rusted steel plate, and has the advantages of high construction speed, low material price and lower comprehensive construction cost.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic view of a bridge pavement widening structure for reconstructing and extending a ramp according to the present invention;
FIG. 2 is a schematic view of a bridge pavement widening structural steel plate for reconstructing and extending a ramp according to the present invention;
the novel ramp asphalt pavement slab comprises a slab body, a slab layer, a ramp box girder layer, a steel plate, bolts, anchor bolts and a ramp asphalt pavement layer, wherein the slab body is 1 used as an old bridge box girder slab, the slab layer is 2 used as an old bridge asphalt pavement layer, the slab body is 3 used as a newly-built ramp box girder slab, the slab body is 4 used as a high-strength steel wire mesh, the slab layer is 5 used as a UHPC (ultra high performance concrete) cushion layer, the slab layer is 6 used as a steel plate, the bolt holes are 61 used as bolt holes, the anchor bolts are 7 used as anchor bolts, and the slab layer is 8 used as a newly-built ramp asphalt pavement layer.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, the utility model provides a bridge pavement widening structure for reconstructing and expanding ramp, which comprises an old bridge box girder plate 1, an old bridge asphalt pavement layer 2, a newly-built ramp box girder plate 3, a high-strength steel wire mesh 4, a UHPC cushion layer 5, a steel plate 6, an anchor bolt 7 and a newly-built ramp asphalt pavement layer 8.
Old bridge box girder plate 1 splices with newly-built ramp box girder plate 3, and is specific, and the mode of splicing about adopting should piece together wide structure and constitute simply, and the construction degree of difficulty is little, easy popularization.
Two ends of the steel plate 6 are respectively fixed on the old bridge box girder plate 1 and the newly-built ramp box girder plate 3 through anchor bolts 7, so that the relation between the newly-built ramp and the old bridge can be effectively improved. Specifically, bolt holes 61 matched with the anchor bolts 7 are formed at two ends of the steel plate 6. At least two rows of bolt holes 61 are arranged at each end of the steel plate 6 and are parallel to the end edge at intervals, the distance between adjacent bolt holes 61 is 30 cm-50 cm, and preferably, the distance between adjacent bolt holes 61 is 50 cm.
The UHPC cushion layer 5 is paved above a steel plate 6, the steel plate 7 is wrapped in the UHPC cushion layer 5, the thickness of the UHPC cushion layer 5 is 3.5 cm-4 cm, and preferably, the thickness of the UHPC cushion layer 5 is 4 cm.
The UHPC cushion layer 5 has stronger sealing performance and durability, can effectively avoid rainwater from permeating into a rusted steel plate, and has the advantages of high construction speed, low material price and lower comprehensive construction cost.
The left end and the right end of the UHPC cushion layer 5 are spliced with the newly-built ramp asphalt pavement layer 8 by adopting oblique seams, the oblique seam inclination angle is 30-45 degrees, and preferably, the oblique seam inclination angle is 45 degrees.
The old bridge asphalt pavement layer 2 is laid on the old bridge box girder plate 1, and the newly-built ramp pavement layer 8 is laid on the newly-built ramp box girder plate 3 and wraps the UHPC cushion layer 5. The old bridge asphalt pavement layer 2 and the newly-built ramp asphalt pavement layer 7 are spliced by adopting a vertical seam, the thicknesses of the old bridge asphalt pavement layer 2 and the newly-built ramp asphalt pavement layer 8 are 8 cm-11 cm, and preferably, the thicknesses of the old bridge asphalt pavement layer 2 and the newly-built ramp asphalt pavement layer 7 are 8 cm.
One end of the high-strength steel wire mesh 4 is embedded in the UHPC cushion layer 5, and the other end of the high-strength steel wire mesh is embedded in the newly-built ramp asphalt pavement layer 8, so that the connection between the UHPC cushion layer 5 and the newly-built ramp asphalt pavement layer 8 can be enhanced. Specifically, the high-strength steel wire mesh 4 is made of steel wires with the diameter of 1mm, and the mesh size is 5mm in length and 5mm in width.
It should be further noted that the depth of the high-strength steel wire mesh 4 embedded in the newly-built ramp asphalt pavement layer 8 is 7cm to 10cm, and the depth of the high-strength steel wire mesh embedded in the UHPC cushion layer 5 is 7cm to 10cm, preferably, the depth of the high-strength steel wire mesh 4 inserted into the newly-built ramp asphalt pavement layer 7 is 7cm, and the depth of the high-strength steel wire mesh inserted into the UHPC cushion layer 5 is 7 cm.
The utility model has the technical effects that:
(1) connect stably, the transition is smooth-going: the high-strength steel wire mesh is arranged between the UHPC cushion layer and the newly-built ramp asphalt pavement layer, so that the connection between the UHPC cushion layer and the newly-built ramp asphalt pavement layer is enhanced, the connection between a new box girder and an old box girder is enhanced by adopting a steel plate, the connection between the newly-built ramp and an old bridge is effectively improved, and the smooth and stable transition section can be ensured by the combination of the UHPC and the steel plate;
(2) simple structure, it is convenient to be under construction: the width splicing structure has simple structure, small construction difficulty and easy popularization;
(3) good durability and low cost: the UHPC cushion layer has stronger sealing performance and durability, can effectively avoid rainwater from permeating into a rusted steel plate, and has the advantages of high construction speed, low material price and lower comprehensive construction cost.
While embodiments of the utility model have been described above, it is not intended to be limited to the details shown herein, and to the particular embodiments shown, but it is to be understood that all changes and modifications that come within the spirit and scope of the utility model are desired to be protected by the teachings herein.
Claims (10)
1. A bridge pavement widening structure for reconstructing and expanding ramp roads is characterized by comprising old bridge box girder plates (1), old bridge asphalt pavement layers (2), newly-built ramp box girder plates (3), high-strength steel wire meshes (4), UHPC cushion layers (5), steel plates (6), anchor bolts (7) and newly-built ramp asphalt pavement layers (8), wherein the old bridge box girder plates (1) are spliced with the newly-built ramp box girder plates (3), two ends of each steel plate (6) are respectively fixed on the old bridge box girder plates (1) and the newly-built ramp box girder plates (3) through the anchor bolts (7), the UHPC cushion layers (5) are laid above the steel plates (6), the steel plates (6) are wrapped in the UHPC cushion layers (5), the old bridge asphalt pavement layers (2) are laid on the old bridge box girder plates (1), the newly-built ramp box girder plates (3) are laid on the newly-built ramp box girder plates and wrapped by the UHPC cushion layers (5), one end of the high-strength steel wire mesh (4) is embedded in the UHPC cushion layer (5), and the other end of the high-strength steel wire mesh is embedded in the newly-built ramp asphalt pavement layer (8).
2. The bridge pavement widening structure for rebuilding and expanding ramp according to claim 1, wherein vertical seam splicing is adopted between the old bridge asphalt pavement layer (2) and the newly-built ramp asphalt pavement layer (8).
3. The bridge and pavement widening structure for rebuilding and expanding ramp according to claim 1, characterized in that the left and right ends of the UHPC cushion layer (5) and the newly-built ramp asphalt pavement layer (8) are spliced by oblique seams, and the oblique angle of the oblique seams is 30-45 degrees.
4. The bridge pavement widening structure for rebuilding and expanding a ramp according to claim 1, wherein bolt holes (61) matched with the anchor bolts (7) are formed at both ends of the steel plate (6).
5. The bridge pavement widening structure for rebuilding ramp according to claim 4, wherein at least two rows of said bolt holes (61) are provided at each end of said steel plate (6) and spaced parallel to the end edge, and the distance between adjacent bolt holes (61) is 30cm to 50 cm.
6. The bridge pavement widening structure for the reconstruction and expansion ramp according to claim 1, wherein the high-strength steel wire mesh (4) is made of steel wires with the diameter of 0.8-1 mm, and the mesh size is 5-8 mm in length and 5-8 mm in width.
7. The bridge and pavement widening structure for rebuilding and expanding a ramp according to claim 1 or 6, wherein the high-strength steel wire mesh (4) is provided with 2-3 layers.
8. The bridge pavement widening structure for rebuilding and expanding ramps of claim 7, wherein the high-strength steel wire mesh (4) is embedded in the asphalt pavement layer (8) of the newly-built ramps to a depth of 7-10 cm, and embedded in the UHPC cushion layer (5) to a depth of 7-10 cm.
9. The bridge pavement widening structure for rebuilding and expanding a ramp according to claim 1, wherein the thickness of the UHPC cushion layer (5) is 3.5-4 cm.
10. The bridge pavement widening structure for rebuilding and expanding ramp according to claim 1, wherein the thickness of the old bridge asphalt pavement layer (2) and the newly-built ramp asphalt pavement layer (8) is 8-11 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220179509.7U CN216689032U (en) | 2022-01-24 | 2022-01-24 | Bridge pavement widening structure for reconstructing and expanding ramp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220179509.7U CN216689032U (en) | 2022-01-24 | 2022-01-24 | Bridge pavement widening structure for reconstructing and expanding ramp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216689032U true CN216689032U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220179509.7U Active CN216689032U (en) | 2022-01-24 | 2022-01-24 | Bridge pavement widening structure for reconstructing and expanding ramp |
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| Country | Link |
|---|---|
| CN (1) | CN216689032U (en) |
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2022
- 2022-01-24 CN CN202220179509.7U patent/CN216689032U/en active Active
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