CN111979931A - Temporary span joint steel-concrete composite structure for realizing rapid connection of bridge deck of framing bridge - Google Patents
Temporary span joint steel-concrete composite structure for realizing rapid connection of bridge deck of framing bridge Download PDFInfo
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- CN111979931A CN111979931A CN202010914483.1A CN202010914483A CN111979931A CN 111979931 A CN111979931 A CN 111979931A CN 202010914483 A CN202010914483 A CN 202010914483A CN 111979931 A CN111979931 A CN 111979931A
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- steel
- composite structure
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- bridge
- concrete composite
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- 239000004567 concrete Substances 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 238000009432 framing Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 86
- 239000010959 steel Substances 0.000 claims abstract description 86
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 239000003351 stiffener Substances 0.000 claims abstract description 6
- 238000004873 anchoring Methods 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000011384 asphalt concrete Substances 0.000 claims description 10
- 239000011150 reinforced concrete Substances 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008520 organization Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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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
- E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
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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
-
- 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
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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
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
Abstract
The invention discloses a temporary span joint steel-concrete composite structure for realizing rapid connection of bridge floors of framing bridges, which comprises steel plates, steel plate T-shaped stiffening, transverse PBL perforated plates, steel bar meshes and steel fiber concrete layers, wherein the steel plates are arranged on the steel plates; a transverse PBL perforated plate is arranged on the steel plate; a plurality of steel plate T-shaped stiffeners are arranged below the steel plates; the transverse steel bars on the top surface of the steel plate extend out of the steel plate by a sufficient anchoring length and are bound with the longitudinal steel bars penetrating through the transverse PBL perforated plate to form a steel bar mesh; the steel mesh, the transverse PBL perforated plate and the steel plate top surface are poured with steel fiber concrete to form a steel fiber concrete layer; the lower surfaces of two sides of the temporary span joint steel-concrete composite structure are respectively erected on the top surfaces of bridge decks at the positions of the corresponding side webs of the inner side beams of the two existing bridges, and are fixed through a plurality of built-in common bolts. The invention can realize the temporary cross-joint quick connection of two existing bridges at lower cost.
Description
Technical Field
The invention relates to the technical field of bridge reconstruction, in particular to a temporary span joint steel-concrete composite structure for realizing rapid connection of bridge floors of framing bridges.
Background
With the acceleration of urbanization development, newly-built road engineering projects in cities are increasing day by day. When road engineering is reconstructed, for the situation that current traffic cannot be interrupted, traffic organization and diversion during construction are generally carried out according to the requirements in the construction process and the road network arrangement of the area where the engineering is located.
When the existing bridges are arranged in two ways at the same design elevation, the clear distance between the two bridges is not large (about 2.0 m), according to the traffic organization during construction, when one end of one bridge is reconstructed and constructed, and a motor vehicle needs to be converted from the bridge to the other bridge, a temporary steel structure trestle is usually required to be built to guide the traffic of the bridge to be reconstructed to the ground, and then the traffic is divided and converted through a ground road network.
Because the construction of the upper part structure, the lower part structure and the pile foundation of the bridge is required to be carried out on the temporary steel structure trestle, the construction period is long, the influence on the current traffic is large during construction, and the input cost is relatively high.
Therefore, for the current situation that two bridges have the same vertical section elevation and the clear distance does not exceed 2.0m, how to realize the seam crossing structure for quickly connecting the two bridge decks becomes a technical problem which needs to be solved by the technical personnel in the field.
Disclosure of Invention
In view of the above defects in the prior art, the invention provides a temporary gap-spanning steel-concrete composite structure for realizing rapid connection of bridge floors of a divided bridge, which aims to realize the current temporary gap-spanning rapid connection between two bridges with the same longitudinal section and not too wide clear distance between the two bridges at lower time cost and economic cost and realize rapid conversion and rapid recovery of traffic of the two bridge floors during construction.
In order to achieve the purpose, the invention discloses a temporary gap-spanning steel-concrete composite structure for realizing rapid connection of bridge floors of framing bridges, which is arranged between two parallel existing bridges and smoothly connects the two existing bridges.
The temporary seam-crossing steel-concrete composite structure comprises a steel plate, a steel plate T-shaped stiffening rib, a transverse PBL perforated plate, a reinforcing mesh and a steel fiber concrete layer;
wherein the transverse PBL perforated plate is arranged on the steel plate; a plurality of steel plate T-shaped stiffeners are arranged below the steel plates;
the transverse steel bars on the top surface of the steel plate extend out of the steel plate by a sufficient anchoring length and are bound with the longitudinal steel bars penetrating through the transverse PBL perforated plate to form the steel bar mesh;
the steel mesh, the transverse PBL perforated plate and the steel plate top surface are poured with steel fiber concrete to form the steel fiber concrete layer;
the lower surfaces of two sides of the temporary seam-crossing steel-concrete composite structure are respectively erected on the top surfaces of the bridge deck at the positions of the side webs corresponding to the inner side beams of the two existing bridges and are fixed through a plurality of built-in common bolts;
and mortar cushion layers and rubber layers are arranged between the lower surfaces of the two sides of the temporary span joint steel-concrete composite structure and the top surface of the bridge deck corresponding to the edge web plate of the inner edge beam of the current bridge.
Preferably, each steel plate T-shaped stiffening rib is arranged corresponding to the position of the transverse PBL perforated plate.
Preferably, the collision avoidance guardrails are cut off to the top surface of the reinforced concrete pavement layer on one side of the temporary span-seam steel-concrete composite structure of the two current-situation bridges, and the asphalt concrete pavement layer is removed in a milling mode.
Preferably, a slope is arranged between the steel fiber concrete layer and the asphalt concrete pavement for interface transition.
Preferably, a continuous structure is arranged between the temporary span steel-concrete composite structure and the two existing bridges.
Preferably, an expansion joint is arranged between the temporary span steel-concrete composite structure and the two existing bridges.
More preferably, the expansion joints are of a structure that U-shaped thin steel plates are welded downwards and turned upwards to the asphalt concrete paving joint surfaces, or the shaped steel expansion joints are arranged to prevent rainwater on the bridge deck from leaking downwards.
The invention has the beneficial effects that:
compared with the prior art, the invention has the advantages of more stable fixation, quicker construction, lower cost and higher recycling rate, can realize the temporary cross joint quick connection between two bridges with the same longitudinal section and not too wide clear distance between the bridges under the current situation with lower time cost and economic cost, and realizes the quick conversion and quick recovery of the traffic of the bridge floors of the two bridges under the current situation during the construction.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 shows a schematic cross-sectional structure of an embodiment of the present invention.
Fig. 2 is an enlarged view of the invention shown in fig. 1 at BB.
Fig. 3 is a schematic view showing a partially enlarged structure at a in fig. 1 according to the present invention.
Fig. 4 shows a schematic plan view of an embodiment of the present invention.
Fig. 5 shows a schematic plan view of another embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1 to 5, the temporary span steel-concrete composite structure for realizing the rapid connection of the bridge deck of the framing bridge is arranged between two parallel existing bridges to smoothly connect the two existing bridges.
The temporary seam-crossing steel-concrete composite structure comprises a steel plate, a steel plate T-shaped stiffening rib, a transverse PBL perforated plate, a reinforcing mesh and a steel fiber concrete layer;
wherein the transverse PBL perforated plate is arranged on the steel plate; a plurality of steel plate T-shaped stiffeners are arranged below the steel plates;
the transverse steel bars on the top surface of the steel plate extend out of the steel plate by a sufficient anchoring length and are bound with the longitudinal steel bars penetrating through the transverse PBL perforated plate to form the steel bar mesh;
the steel mesh, the transverse PBL perforated plate and the steel plate top surface are poured with steel fiber concrete to form the steel fiber concrete layer;
the lower surfaces of two sides of the temporary seam-crossing steel-concrete composite structure are respectively erected on the top surfaces of the bridge deck at the positions of the side webs corresponding to the inner side beams of the two existing bridges and are fixed through a plurality of built-in common bolts;
and mortar cushion layers and rubber layers are arranged between the lower surfaces of the two sides of the temporary span joint steel-concrete composite structure and the top surface of the bridge deck corresponding to the edge web plate of the inner edge beam of the current bridge.
The principle of the invention is as follows:
the temporary span joint steel-concrete composite structure comprising the steel plate, the steel plate T-shaped stiffening, the transverse PBL perforated plate, the reinforcing mesh and the steel fiber concrete layer is simple, the top surface formed by the steel fiber concrete layer has better driving comfort, the built-in common bolt is more stable in fixation, the construction is quicker, the cost is lower, the recycling rate is higher, and the temporary span joint quick connection of two current bridges can be realized at lower time cost and economic cost.
The mortar cushion layer is arranged to ensure that the steel structure is closely attached to the existing bridge floor, and the load on the steel structure cross-joint structure is accurately transferred to a required position through the arranged position of the mortar cushion layer to ensure the stress safety of the existing bridge structure; the rubber layer realizes the isolation and the flexible contact of the steel structure and the bridge deck.
In some embodiments, each of the steel plate T-stiffeners is disposed corresponding to the position of the transverse PBL apertured plate.
In some embodiments, the anti-collision guardrail is cut off from one side of each existing bridge where the temporary span-seam steel-concrete composite structure is arranged to the top surface of the reinforced concrete pavement layer, and the asphalt concrete pavement layer is removed by milling.
In certain embodiments, a slope is provided between the steel fiber concrete layer and the asphalt concrete pavement for interface transition.
In some embodiments, a continuous structure is provided between the temporary span steel-concrete composite structure and two existing bridges.
In some embodiments, an expansion joint is arranged between the temporary span-seam reinforced concrete composite structure and the two existing bridges.
In some embodiments, the expansion joints are made of U-shaped thin steel plates welded downwards and turned upwards to the asphalt concrete paving joint surfaces, or the section steel expansion joints are arranged to prevent rainwater on the bridge deck from leaking downwards.
After the temporary traffic organization conversion function is finished in the construction period, the temporary crack-spanning reinforced concrete composite structure is dismantled, the fixing bolts are cut off, the embedded reinforcements of the original anti-collision guardrail in the reinforced concrete pavement layers of the existing bridge are chiseled off, the guardrail reinforcement framework is bound again, and guardrail concrete is poured; meanwhile, the bridge deck asphalt concrete in the paving construction area recovers the framing function of the bridge again.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (7)
1. The temporary gap-spanning steel-concrete composite structure for realizing the quick connection of the bridge deck of the framing bridge is arranged between two parallel existing bridges and smoothly connects the two existing bridges; the steel plate T-shaped reinforced concrete floor is characterized by comprising a steel plate, a steel plate T-shaped reinforced, a transverse PBL perforated plate, a steel bar net piece and a steel fiber concrete layer;
the transverse PBL perforated plate is arranged on the steel plate; a plurality of steel plate T-shaped stiffeners are arranged below the steel plates;
the transverse steel bars on the top surface of the steel plate extend out of the steel plate by a sufficient anchoring length and are bound with the longitudinal steel bars penetrating through the transverse PBL perforated plate to form the steel bar mesh;
the steel mesh, the transverse PBL perforated plate and the steel plate top surface are poured with steel fiber concrete to form the steel fiber concrete layer;
the lower surfaces of two sides of the temporary seam-crossing steel-concrete composite structure are respectively erected on the top surfaces of the bridge deck at the positions of the side webs corresponding to the inner side beams of the two existing bridges and are fixed through a plurality of built-in common bolts;
and mortar cushion layers and rubber layers are arranged between the lower surfaces of the two sides of the temporary span joint steel-concrete composite structure and the top surface of the bridge deck corresponding to the edge web plate of the inner edge beam of the current bridge.
2. The temporary span steel-concrete composite structure for realizing the quick connection of the framing bridge deck according to claim 1, wherein each steel plate T-shaped stiffener is arranged corresponding to the position of the transverse PBL perforated plate.
3. The temporary span-seam steel-concrete composite structure for realizing the rapid connection of the bridge deck of the framing bridge according to claim 1, wherein the collision avoidance guardrails are cut off from one side of the two existing bridges where the temporary span-seam steel-concrete composite structure is arranged to the top surface of the reinforced concrete pavement layer, and the asphalt concrete pavement layer is removed by milling.
4. The temporary gap-spanning steel-concrete composite structure for realizing the rapid connection of the bridge deck of the framing bridge according to claim 1, wherein a slope is arranged between the steel fiber concrete layer and the asphalt concrete pavement for interface transition.
5. The temporary gap-spanning reinforced concrete composite structure for realizing the quick connection of the bridge deck of the framing bridge according to claim 1, wherein a continuous structure is arranged between the temporary gap-spanning reinforced concrete composite structure and two existing bridges.
6. The temporary span-seam steel-concrete composite structure for realizing the rapid connection of the bridge deck of the framing bridge according to claim 1, wherein an expansion joint is arranged between the temporary span-seam steel-concrete composite structure and two existing bridges.
7. The temporary span joint steel-concrete composite structure for realizing the quick connection of the bridge deck of the framing bridge according to claim 6, wherein the expansion joints are formed by welding U-shaped thin steel plates downwards and turning upwards to the asphalt concrete paving joint faces, or are formed by steel expansion joints to prevent rainwater on the bridge deck from leaking downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010914483.1A CN111979931A (en) | 2020-09-03 | 2020-09-03 | Temporary span joint steel-concrete composite structure for realizing rapid connection of bridge deck of framing bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010914483.1A CN111979931A (en) | 2020-09-03 | 2020-09-03 | Temporary span joint steel-concrete composite structure for realizing rapid connection of bridge deck of framing bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111979931A true CN111979931A (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010914483.1A Pending CN111979931A (en) | 2020-09-03 | 2020-09-03 | Temporary span joint steel-concrete composite structure for realizing rapid connection of bridge deck of framing bridge |
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| Country | Link |
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| CN (1) | CN111979931A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016446A (en) * | 2021-12-20 | 2022-02-08 | 上海市政工程设计研究总院（集团）有限公司 | Elastic abutted seam for bridge width-splicing structure and construction method thereof |
-
2020
- 2020-09-03 CN CN202010914483.1A patent/CN111979931A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016446A (en) * | 2021-12-20 | 2022-02-08 | 上海市政工程设计研究总院（集团）有限公司 | Elastic abutted seam for bridge width-splicing structure and construction method thereof |
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