CN210086084U - Reinforced structure of assembled reinforced concrete plate girder bridge - Google Patents
Reinforced structure of assembled reinforced concrete plate girder bridge Download PDFInfo
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- CN210086084U CN210086084U CN201920112919.8U CN201920112919U CN210086084U CN 210086084 U CN210086084 U CN 210086084U CN 201920112919 U CN201920112919 U CN 201920112919U CN 210086084 U CN210086084 U CN 210086084U
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Abstract
The utility model discloses a reinforced structure of an assembled reinforced concrete plate girder bridge, which belongs to the field of bridge reinforcement and maintenance and comprises connecting reinforcing steel bars, reinforcing steel bar net sheets and a polymer mortar layer; the upper end of the connecting steel bar is fixedly connected with the reinforced concrete hollow slab, the lower end of the connecting steel bar is fixedly connected with the steel bar net piece, the polymer mortar layer is coated outside the steel bar net piece, and the polymer mortar layer is connected with the bottom surface of the reinforced concrete hollow slab. The utility model increases the thickness of the bottom plate, not only improves the section rigidity and the whole stress performance of the structure, but also effectively makes up the defects of insufficient thickness of the bottom plate and insufficient steel bar protection layer caused by construction errors; the polymer mortar material has better compactness, improves the anti-carbonization and anti-corrosion capability of the bridge, and improves the durability of the bridge structure.
Description
Technical Field
The utility model relates to a bridge reinforcement maintenance field especially relates to a reinforced structure of assembled reinforced concrete plate girder bridge.
Background
The assembled reinforced concrete slab beam is favored by designers due to the reasons of relatively mature process, fast construction progress, obvious economic benefit and the like. At present, the assembled reinforced concrete slab bridge occupies a large proportion in the bridge boundary of China. However, the fabricated beam bridge has the defects of hinge joint and plate bottom water seepage and efflorescence, poor bearing capacity and durability and the like under the influence of comprehensive factors such as moving load, environmental conditions, defects existing in the construction process and the like.
Therefore, a reinforcing structure capable of improving the bearing capacity and durability of the bridge and effectively preventing the hinge joint from water seepage and efflorescence is needed in the market.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reinforced structure of assembled reinforced concrete plate girder bridge to solve the problem that above-mentioned prior art exists, not only promote the whole atress performance of structure, improve structural rigidity and durability, can also compensate the defect that bottom plate thickness, protective layer thickness are not enough.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a reinforced structure of an assembly type reinforced concrete plate girder bridge, which comprises connecting reinforcing steel bars, reinforcing steel bar net sheets and a polymer mortar layer; the upper end of the connecting steel bar is fixedly connected with the reinforced concrete hollow slab, the lower end of the connecting steel bar is fixedly connected with the steel bar net piece, the polymer mortar layer is coated outside the steel bar net piece, and the polymer mortar layer is connected with the bottom surface of the reinforced concrete hollow slab.
Optionally, the reinforced concrete hollow slab further comprises a hinge joint reinforcing glue filling body, wherein the hinge joint reinforcing glue filling body is arranged in the post-cast concrete microcracks in the hinge joints between the adjacent reinforced concrete hollow slabs.
Optionally, the concrete wall also comprises an interfacial agent layer arranged between the reinforced concrete hollow slab and the polymer mortar layer, the upper surface of the interfacial agent layer is used for being connected with the reinforced concrete hollow slab, and the lower surface of the interfacial agent layer is connected with the polymer mortar layer.
Optionally, the connecting reinforcing steel bars are L-shaped common thread reinforcing steel bars with the diameter of 12mm and the length of 140mm, the straight ends of the connecting reinforcing steel bars are used for being implanted into the reinforced concrete hollow slab, the bent ends of the connecting reinforcing steel bars are arranged outside the reinforced concrete hollow slab, and the direction of the bent ends of the connecting reinforcing steel bars is consistent with the forward bridge direction or the transverse bridge direction; the bottom surface of the reinforced concrete hollow slab body is uniformly distributed with the connecting reinforcing steel bars, and the connecting reinforcing steel bars are distributed at equal intervals in the bridge direction and the transverse bridge direction in a staggered manner.
Optionally, the bridge-wise reinforcing steel bars or the transverse bridge-wise reinforcing steel bars of the reinforcing steel bar net piece are hung at the bent ends of the connecting reinforcing steel bars, and the bridge-wise reinforcing steel bars and the transverse bridge-wise reinforcing steel bars of the reinforcing steel bar net piece are connected through steel wire binding.
Optionally, the steel bars of the steel bar mesh are common thread steel bars with the diameter of 8 mm.
Optionally, the length of the reinforcing mesh is equal to the total length of the bottom of the reinforced concrete hollow slab-the length from the beam end to the edge of the table cap; the width of the reinforcing mesh sheet is equal to the total width of the bottom of the reinforced concrete hollow slab, namely 60 mm.
Optionally, the mesh size of the mesh of the reinforcing steel bar is 100mm × 100 mm.
Optionally, the polymer mortar layer has a thickness of 4 cm.
The utility model discloses for prior art gain following technological effect:
the utility model adds the polymer mortar layer containing the reinforcing mesh inside by chiseling and replacing the bottom of the bridge reinforced concrete hollow slab, thereby increasing the thickness of the bottom plate, not only improving the section rigidity and improving the whole stress performance of the structure, but also effectively making up the defects of insufficient thickness of the bottom plate and reinforcing protective layer caused by construction errors; the polymer mortar material has better compactness, improves the anti-carbonization and anti-corrosion capability of the bridge, and improves the durability of the bridge structure.
Furthermore, because the hinge joint reinforcing glue is used for bonding and reinforcing the hinge joint concrete, the working performance of the hinge joint is improved, the bridge deck is effectively prevented from seeping and permeating into the hinge joint, and the hinge joint is prevented from seeping water and efflorescence.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a cross-sectional view of the reinforcing structure of the assembled reinforced concrete plate girder bridge provided by the present invention along the bridge direction;
FIG. 2 is a cross-sectional view of the reinforcement structure of the assembled reinforced concrete slab-girder bridge provided by the present invention along the transverse bridge direction;
fig. 3 is a structural diagram of the connecting steel bars and the steel bar mesh of the reinforcing structure of the assembly type reinforced concrete plate girder bridge provided by the utility model;
in the figure: 1-reinforced concrete hollow slab; 2-connecting reinforcing steel bars; 3-reinforcing steel bars along the bridge direction; 4-transverse bridge-direction reinforcing steel bars; 5-a layer of interfacial agent; 6-polymer mortar layer; 7-the hinge joint adds the glue obturator.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a reinforced structure of assembled reinforced concrete plate girder bridge to solve the problem that prior art exists, not only promote the whole atress performance of structure, improve structural rigidity and durability, can also compensate the defect that bottom plate thickness, protective layer thickness are not enough.
The utility model provides a reinforced structure of an assembly type reinforced concrete plate girder bridge, which comprises connecting reinforcing steel bars, reinforcing steel bar net sheets and a polymer mortar layer; the upper end of the connecting steel bar is fixedly connected with the reinforced concrete hollow slab, the lower end of the connecting steel bar is fixedly connected with the steel bar net piece, the polymer mortar layer is coated outside the steel bar net piece, and the polymer mortar layer is connected with the bottom surface of the reinforced concrete hollow slab.
The utility model adds the polymer mortar layer containing the reinforcing mesh inside by chiseling and replacing the bottom of the bridge reinforced concrete hollow slab, thereby increasing the thickness of the bottom plate, not only improving the section rigidity and improving the whole stress performance of the structure, but also effectively making up the defects of insufficient thickness of the bottom plate and reinforcing protective layer caused by construction errors; the polymer mortar material has better compactness, improves the anti-carbonization and anti-corrosion capability of the bridge, and improves the durability of the bridge structure.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-3, the reinforced structure of the assembled reinforced concrete slab-girder bridge provided by the utility model comprises connecting steel bars 2, steel bar meshes and a polymer mortar layer 6; the upper end of the connecting steel bar 2 is fixedly connected with the reinforced concrete hollow slab 1, the lower end of the connecting steel bar 2 is fixedly connected with the steel bar net piece, the polymer mortar layer 6 is coated outside the steel bar net piece, and the polymer mortar layer 6 is connected with the bottom surface of the reinforced concrete hollow slab 1.
During construction, chiseling is firstly carried out on the bottom of the reinforced concrete hollow slab 1, connecting reinforcing steel bars 2 are implanted, then reinforcing steel bar meshes and the connecting reinforcing steel bars 2 are firmly fixed, the reinforcing steel bar meshes are controlled to be parallel to the bottom surface and the elevation position of the reinforced concrete hollow slab 1, and finally, a polymer mortar layer 6 is formed through spraying, so that the reinforcing steel bar meshes are completely coated by the polymer mortar layer 6. Spraying polymer mortar in three layers, coating an interface agent on a spraying part before primary spraying, and spraying a layer of mortar with the thickness of 1cm by using a special mortar spraying machine before the interface agent is initially set to ensure that the bottom surfaces of the reinforcing mesh and the original beam slab are full of the mortar; manually extruding and coating the second layer of mortar, wherein the thickness of the second layer of mortar is 2cm, and covering a reinforcing mesh is ensured; and manually plastering the third layer of mortar, and flattening the plastering surface before initial setting. Each mortar construction ensured that the upper mortar was before initial setting (approximately 2 hours). And (3) during construction, interlayer bonding is ensured, construction blocks are divided in detail, and water spraying and health preserving are timely covered after mortar is finally set.
Further, the reinforced concrete hollow slab comprises hinge joint reinforcing glue filling bodies 7, wherein the hinge joint reinforcing glue filling bodies 7 are arranged in post-cast concrete micro cracks in hinge joints between adjacent reinforced concrete hollow slabs 1.
The hinge joint is reinforced by pressure glue injection through hinge joint reinforcing glue, the hinge joint reinforcing glue permeates into post-cast concrete micro cracks in the hinge joint under high pressure to form a hinge joint reinforcing glue filling body 7, the bridge floor is effectively prevented from permeating into the hinge joint, and the hinge joint concrete is prevented from permeating and efflorescence.
Further, the reinforced concrete hollow slab comprises an interfacial agent layer 5 arranged between the reinforced concrete hollow slab 1 and the polymer mortar layer 6, the upper surface of the interfacial agent layer 5 is used for being connected with the reinforced concrete hollow slab 1, and the lower surface of the interfacial agent layer 5 is connected with the polymer mortar layer 6.
Before the polymer mortar layer 6 is sprayed, the interface agent is sprayed on the bottom surface of the reinforced concrete hollow slab 1, so that the adhesive force between the polymer mortar layer 6 and the reinforced concrete hollow slab 1 is effectively enhanced, and the structural integrity is improved.
Furthermore, the connecting reinforcing steel bars 2 are L-shaped common thread reinforcing steel bars with the diameter of 12mm and the length of 140mm, the straight ends of the connecting reinforcing steel bars 2 are implanted into the reinforced concrete hollow slab 1, the bending ends of the connecting reinforcing steel bars 2 are arranged outside the reinforced concrete hollow slab 1, and the bending end directions of the connecting reinforcing steel bars 2 are consistent with the forward bridge direction or the transverse bridge direction; the bottom surface of the reinforced concrete hollow slab 1 is uniformly distributed with the connecting reinforcing steel bars 2, and the connecting reinforcing steel bars 2 are distributed along the bridge direction and the transverse bridge direction at intervals in a staggered manner.
The L-shaped design of the connecting reinforcing steel bars 2 can facilitate the connection and positioning between the reinforcing steel bar net piece and the connecting reinforcing steel bars 2, and constructors can quickly and accurately fix the reinforcing steel bar net piece in a preset position, so that the overall construction efficiency is improved.
Further, the steel bar net piece is hung at the bent end of the connecting steel bar 2 along the bridge-direction steel bar 3 or the transverse bridge-direction steel bar 4, and the steel bar net piece is connected with the transverse bridge-direction steel bar 4 through steel wire binding along the bridge-direction steel bar 3.
Further, the reinforcing bars of the reinforcing bar net piece are ordinary thread reinforcing bars with the diameter of 8 mm.
Further, the length of the reinforcing mesh is equal to the total length of the bottom of the reinforced concrete hollow slab 1 and the length from the beam end to the edge of the table cap; the width of the reinforcing mesh sheet is equal to the total width of-60 mm at the bottom of the reinforced concrete hollow slab 1.
Further, the mesh size of the reinforcing mesh is 100mm × 100 mm.
Further, the thickness of the polymer mortar layer 6 (after collecting) was 4 cm.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. The utility model provides a reinforced structure of assembled reinforced concrete slab-girder bridge which characterized in that: comprises connecting steel bars, steel bar meshes and a polymer mortar layer; the upper end of the connecting steel bar is fixedly connected with the reinforced concrete hollow slab, the lower end of the connecting steel bar is fixedly connected with the steel bar net piece, the polymer mortar layer is coated outside the steel bar net piece, and the polymer mortar layer is connected with the bottom surface of the reinforced concrete hollow slab.
2. The reinforcement structure of an assembled reinforced concrete slab girder bridge according to claim 1, wherein: the reinforced concrete hollow slab is characterized by further comprising hinge joint reinforcing glue filling bodies, wherein the hinge joint reinforcing glue filling bodies are arranged in post-cast concrete micro cracks in hinge joints between adjacent reinforced concrete hollow slabs.
3. The reinforcement structure of an assembled reinforced concrete slab girder bridge according to claim 1, wherein: the interface agent layer is arranged between the reinforced concrete hollow slab and the polymer mortar layer, the upper surface of the interface agent layer is used for being connected with the reinforced concrete hollow slab, and the lower surface of the interface agent layer is connected with the polymer mortar layer.
4. The reinforcement structure of an assembled reinforced concrete slab girder bridge according to claim 1, wherein: the connecting reinforcing steel bars are L-shaped twisted reinforcing steel bars with the diameter of 12mm and the length of 140mm, the straight ends of the connecting reinforcing steel bars are used for being implanted into the reinforced concrete hollow slab, the bending ends of the connecting reinforcing steel bars are arranged outside the reinforced concrete hollow slab, and the direction of the bending ends of the connecting reinforcing steel bars is consistent with the direction along the bridge or the direction along the transverse bridge; the bottom surface of the reinforced concrete hollow slab body is uniformly distributed with the connecting reinforcing steel bars, and the connecting reinforcing steel bars are distributed at equal intervals in the bridge direction and the transverse bridge direction in a staggered manner.
5. The reinforcement structure of an assembled reinforced concrete slab girder bridge according to claim 4, wherein: the bridge-oriented reinforcing steel bars or the transverse bridge-oriented reinforcing steel bars of the reinforcing steel bar net piece are hung at the bending ends of the connecting reinforcing steel bars, and the bridge-oriented reinforcing steel bars and the transverse bridge-oriented reinforcing steel bars of the reinforcing steel bar net piece are connected through binding of steel wires.
6. The reinforcement structure of an assembled reinforced concrete slab girder bridge according to claim 1, wherein: the reinforcing bar of reinforcing bar net piece is diameter 8 mm's twisted steel.
7. The reinforcement structure of an assembled reinforced concrete slab girder bridge according to claim 1, wherein: the length of the reinforcing mesh is equal to the total length of the bottom of the reinforced concrete hollow slab and the length from the beam end to the edge of the table cap; the width of the reinforcing mesh sheet is equal to the total width of the bottom of the reinforced concrete hollow slab, namely 60 mm.
8. The reinforcement structure of an assembled reinforced concrete slab girder bridge according to claim 1, wherein: the mesh size of reinforcing bar net piece is 100mm x 100 mm.
9. The reinforcement structure of an assembled reinforced concrete slab girder bridge according to claim 1, wherein: the thickness of the polymer mortar layer was 4 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920112919.8U CN210086084U (en) | 2019-01-23 | 2019-01-23 | Reinforced structure of assembled reinforced concrete plate girder bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920112919.8U CN210086084U (en) | 2019-01-23 | 2019-01-23 | Reinforced structure of assembled reinforced concrete plate girder bridge |
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| CN210086084U true CN210086084U (en) | 2020-02-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112853916A (en) * | 2021-03-09 | 2021-05-28 | 甘肃畅陇公路养护技术研究院有限公司 | Assembled waffle bridge panel combined box girder structure and construction method thereof |
| CN113216017A (en) * | 2021-05-12 | 2021-08-06 | 山西省交通科技研发有限公司 | Steel-encased ultrahigh-performance concrete reinforcing method for box girder |
-
2019
- 2019-01-23 CN CN201920112919.8U patent/CN210086084U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112853916A (en) * | 2021-03-09 | 2021-05-28 | 甘肃畅陇公路养护技术研究院有限公司 | Assembled waffle bridge panel combined box girder structure and construction method thereof |
| CN113216017A (en) * | 2021-05-12 | 2021-08-06 | 山西省交通科技研发有限公司 | Steel-encased ultrahigh-performance concrete reinforcing method for box girder |
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