CN217997784U - Prefabricated T-beam bridge - Google Patents
Prefabricated T-beam bridge Download PDFInfo
- Publication number
- CN217997784U CN217997784U CN202220567093.6U CN202220567093U CN217997784U CN 217997784 U CN217997784 U CN 217997784U CN 202220567093 U CN202220567093 U CN 202220567093U CN 217997784 U CN217997784 U CN 217997784U
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- prestressed concrete
- steel
- plate
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a prefabricated T girder bridge transversely assembles by two prestressed concrete boundary beams and a plurality of prestressed concrete center sills and constitutes, between two adjacent prestressed concrete center sills, transversely connect by the horizontal wet seam of T roof beam between the prestressed concrete center sill and the prestressed concrete boundary beam, the middle part of every prestressed concrete boundary beam and prestressed concrete center sill is provided with two webs, and the web bottom is provided with the steel construction bottom plate, is provided with concrete and prestressing steel bundle in the bottom plate U type lower limb steel sheet of steel construction bottom plate, the utility model discloses compare with traditional T girder bridge, the bearing capacity of bottom plate improves by a wide margin, and the transverse connection between the adjacent T roof beam is more reliable, and the web transverse stiffness increases, and horizontal bearing capacity improves to adopt the prefabricated method of mill to make the component, simple manufacture has fine spreading value.
Description
Technical Field
The utility model relates to a bridge engineering technical field especially relates to a prefabricated T girder bridge.
Background
The prestressed concrete T-beam bridge has the advantages of low beam height, small engineering consumption, low construction cost and simple construction, is widely applied to highway bridges, has outstanding advantages in the span range of 30-40 m, has small web plate thickness and weak transverse bending resistance in the traditional T-beam bridge, and can inevitably generate transverse web plate cracks under the long-term action of overweight vehicles, and has large bending moment in the span of the bridge, and the longitudinal cracks of a T-beam bottom plate also occur at times during the operation of the bridge.
In patent document CN102776828A, a prefabricated profiled beam for a bridge is disclosed, which has light self weight, low manufacturing cost and simple manufacturing, but has low load-bearing capacity.
Therefore, it is needed to provide a precast concrete girder bridge, which optimizes the stress characteristics of the bridge and improves the bearing capacity of the bridge.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need to provide a prefabricated T-beam bridge with more reliable transverse connection and higher bearing capacity of the bottom plate and the web plate, so as to solve the problem of low bearing capacity of the bridge in the prior art.
For realize above-mentioned mesh, the utility model provides a set up precast concrete T girder bridge of steel bottom plate, transversely assemble by two prestressed concrete boundary beams and a plurality of prestressed concrete well roof beams and constitute, between two adjacent prestressed concrete well roof beams, transversely connect by the horizontal wet seam of T roof beam between prestressed concrete well roof beam and the prestressed concrete boundary beam, the middle part of every prestressed concrete boundary beam is provided with two boundary beam webs, the middle part of roof beam is provided with two well beam webs in every prestressed concrete, the bottom of roof beam all is provided with steel structure bottom plate in prestressed concrete boundary beam and the prestressed concrete.
Furthermore, each prestressed concrete side beam of the T-beam bridge is formed by assembling a side beam top plate, two side beam webs and a steel structure bottom plate, side beam top plate longitudinal steel bars, side beam top plate transverse connection closed steel bars and side beam top plate steel shear nails are arranged in the side beam top plate, and side beam web plate longitudinal prestressed steel beams are arranged in the side beam webs.
Furthermore, each prestressed concrete center sill of the T-beam bridge is formed by assembling a center sill top plate, two center sill webs and a steel structure bottom plate, wherein a center sill top plate longitudinal steel bar, a center sill top plate transverse connection closed steel bar and a center sill top plate steel shear nail are arranged in the center sill top plate, and a center sill web longitudinal prestressed steel beam is arranged in the center sill web.
Furthermore, the steel structure bottom plate of the T-beam bridge consists of a bottom plate upper flange steel plate, a bottom plate steel web and a bottom plate U-shaped lower flange steel plate, the bottom plate U-shaped lower flange steel plate and the bottom plate upper flange steel plate are connected through welding through the bottom plate steel web, bottom plate concrete is arranged in the bottom plate U-shaped lower flange steel plate, and a bottom plate longitudinal prestress steel beam is tensioned in the bottom plate concrete.
Furthermore, a bottom plate upper flange shear nail is arranged on the upper flange steel plate of the bottom plate of the T-shaped beam bridge, two side beam webs of the concrete side beam are connected with the steel structure bottom plate through the bottom plate upper flange shear nail, and two middle beam webs of the concrete middle beam are connected with the steel structure bottom plate through the bottom plate upper flange shear nail.
Furthermore, concrete transverse partition plates are arranged between two adjacent prestressed concrete middle beams of the T-beam bridge and between the prestressed concrete middle beams and the prestressed concrete side beams, and the concrete transverse partition plates are longitudinally arranged at the end part of the bridge, at a 1/4 span position and at a span position along the bridge.
The utility model provides a set up precast concrete T beam bridge of steel bottom plate, transversely assemble by two prestressed concrete boundary beams and a plurality of prestressed concrete well roof beams and form, between two adjacent prestressed concrete well roof beams, transversely connect by the horizontal wet joint of T roof beam between the roof beam in the prestressed concrete and the prestressed concrete boundary beam, the middle part of every prestressed concrete boundary beam is provided with two boundary beam webs, the middle part of roof beam is provided with two well beam webs in every prestressed concrete, the bottom of roof beam all is provided with the steel construction bottom plate in prestressed concrete boundary beam and the prestressed concrete. During construction, firstly, prestressed concrete side beams and prestressed concrete middle beams are prefabricated, secondly, the middle beams and the side beams are hoisted to corresponding bridge positions, transverse partition plates between two T beams and concrete in transverse wet joints are poured, the T beams are transversely connected into a whole, finally, bridge deck cast-in-place layers and bridge deck pavement are integrally poured on T beam top plates and the transverse wet joints, and bridge deck auxiliary facilities and anti-collision guardrails are constructed.
Compared with the prior art, the utility model following beneficial effect and advantage have:
one is as follows: the T-beam bottom plate adopts a steel structure bottom plate, concrete is poured in a U-shaped lower flange steel plate of the bottom plate, and a prestressed steel beam is tensioned, so that the bearing capacity of the bottom plate is greatly improved;
the second step is as follows: the prestressed concrete side beam and the prestressed concrete middle beam adopt a double-web structure, the transverse rigidity of the web is increased, and the transverse bearing capacity is improved;
and thirdly: the prestressed concrete side beam and the prestressed concrete middle beam are both factory prefabricated components, so that the manufacturing is simple, and the construction period is greatly shortened.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made of preferred embodiments of the present invention.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a vertical layout of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is a cross-sectional layout of a single prestressed concrete side rail;
FIG. 5 is a cross-sectional layout of a single prestressed concrete center sill;
FIG. 6 is a three-dimensional layout view of a steel structure bottom plate;
FIG. 7 is a cross-sectional layout view of a transverse connection of two adjacent prestressed concrete center sills;
FIG. 8 is an enlarged partial view of FIG. 7 at B;
FIG. 9 is a transverse cross-sectional layout view of adjacent prestressed concrete center sills and prestressed concrete side sills in transverse connection;
FIG. 10 is an enlarged view of a portion of FIG. 9 at A;
FIG. 11 is a transverse section layout diagram of the transverse connection of two adjacent prestressed concrete center sills and concrete diaphragms;
FIG. 12 is a transverse cross-sectional layout view of transverse connections of a prestressed concrete center sill, prestressed concrete side sills, and concrete diaphragms;
FIG. 13 is a three-dimensional connecting view of two adjacent prestressed concrete center sills;
fig. 14 is a three-dimensional layout view of two adjacent prestressed concrete center sills connected with a concrete diaphragm.
In the attached drawings, 1, a prestressed concrete side beam; 11. a roof of the boundary beam; 11a, longitudinal steel bars of the top plate of the side beam; 11b, transversely connecting the edge beam top plate with a closed steel bar; 11c, edge beam top plate steel shear nails; 12. an edge beam web; 12a, longitudinal prestressed steel bundles of the edge beam web; 2. prestressed concrete center sill; 21. a center sill top plate; 21a, longitudinal steel bars of a top plate of the middle beam; 21b, transversely connecting a top plate of the middle beam with a closed steel bar; 21c, middle beam top plate steel shear nails; 22. a center sill web; 22a, longitudinally pre-stressing a steel beam by a middle beam web plate; 3. a steel structure bottom plate; 3a, a bottom plate upper flange steel plate; 3b, a bottom plate steel web plate; 3c, a bottom plate U-shaped lower flange steel plate; 3d, shearing nails for upper flanges of the base plate; 3e, bottom plate concrete; 3f, longitudinally pre-stressing a steel beam on the bottom plate; 4. t-beam transverse wet seaming; 5. a bridge deck cast-in-place layer; 6. paving a bridge deck; 7. an anti-collision guardrail; 8. concrete diaphragm.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.
As shown in FIGS. 1-14, the embodiment of the utility model provides a prefabricated T-beam bridge, the haplopore span is 40m, and the total width of bridge floor is 12.5m, one-way 3 lanes. Adopt the utility model provides a set up precast concrete T beam bridge of steel bottom plate comprises two prestressed concrete well roof beams 2 and two prestressed concrete limit roof beams 1 prefabrications. The beam height of the prestressed concrete middle beam 2 and the prestressed concrete side beam 1 is 2.2m, the transverse width of the side beam top plate 11 is 2.75m, the transverse width of the middle beam top plate 21 is 2.75m, the transverse width of the T-beam transverse wet joint 4 is 0.5m, and the transverse width of each side beam web plate 12 and each middle beam web plate 22 is 15cm. During construction, firstly, a prestressed concrete side beam 1 and a prestressed concrete middle beam 2 are prefabricated, secondly, the prestressed concrete middle beam 2 and the prestressed concrete side beam 1 are hoisted to the corresponding bridge position, a concrete diaphragm plate 8 between two T-shaped beams is poured, concrete in a transverse wet joint 4 is poured, the T-shaped beams are transversely connected into a whole, finally, a bridge deck cast-in-place layer 5 and a bridge deck pavement 6 are integrally poured on a side beam top plate 11, a middle beam top plate 21 and the transverse wet joint 4, and bridge deck auxiliary facilities and an anti-collision guardrail 7 are constructed. The bridge has the advantages that the stress characteristic of the bridge is optimized, the steel structure bottom plate is adopted as the bottom plate, concrete is poured in the U-shaped lower flange steel plate of the bottom plate, the prestressed steel beams are tensioned, the bearing capacity of the bottom plate is greatly improved, steel shear nails are arranged on the prestressed concrete side beam and the prestressed concrete middle beam top plate, the shear nails are more reliably connected with concrete in the transverse wet joint of the T-shaped beam, the transverse connection capacity between adjacent beam bodies can be obviously improved, the web plate adopts a double-web plate structure, the transverse rigidity of the web plate is increased, the transverse bearing capacity of the web plate is improved, and the durability of the bridge is greatly improved.
Compared with the prior art, the embodiment of the utility model provides a have following effect:
one is as follows: the T-beam bottom plate adopts a steel structure bottom plate, concrete is poured in a U-shaped lower flange steel plate of the bottom plate, and the prestressed steel bundles are tensioned, so that the bearing capacity of the bottom plate is greatly improved;
and the second step is as follows: the prestressed concrete side beam and the prestressed concrete middle beam adopt a double-web structure, the transverse rigidity of the web is increased, and the transverse bearing capacity is improved;
and the third step: the prestressed concrete side beam and the prestressed concrete middle beam are factory prefabricated components, so that the manufacturing is simple, and the construction period is greatly shortened;
fourthly, the method comprises the following steps: the steel shear nails are arranged on the prestressed concrete side beam top plate and the prestressed concrete middle beam top plate, the shear nails are more reliably connected with concrete in the transverse wet joint of the T beam, and the transverse connection capacity between adjacent beam bodies can be obviously improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (5)
1. The utility model provides a prefabricated T girder bridge, its characterized in that transversely is assembled by two prestressed concrete boundary beams (1) and a plurality of prestressed concrete in roof beam (2) and is constituteed, adjacent two among the prestressed concrete between roof beam (2) among the prestressed concrete roof beam (2) with transversely connect by the horizontal wet joint of T roof beam (4) between the prestressed concrete boundary beam (1), every the middle part of prestressed concrete boundary beam (1) is provided with two boundary beam webs (12), every the middle part of roof beam (2) is provided with two in the prestressed concrete web (22), prestressed concrete boundary beam (1) with the bottom of roof beam (2) all is provided with steel construction bottom plate (3) among the prestressed concrete, every prestressed concrete boundary beam (1) is by boundary beam roof plate (11), two boundary beam webs (12) steel construction bottom plate (3) assembly is constituteed, be provided with the longitudinal reinforcement roof plate of boundary beam (11 a), boundary beam roof beam (11 b), closed steel reinforcement roof beam (12) in boundary beam (11) in the boundary beam roof plate (11), set up the longitudinal reinforcement roof beam web (12), sets up prestressing force shear force steel construction web (12).
2. The prefabricated T-beam bridge of claim 1, wherein each prestressed concrete center beam (2) is assembled by a center beam top plate (21), two center beam webs (22) and the steel structure bottom plate (3), a center beam top plate longitudinal steel bar (21 a), a center beam top plate transverse connection closing steel bar (21 b) and a center beam top plate steel shear nail (21 c) are arranged in the center beam top plate (21), and a center beam web plate longitudinal prestressed steel bundle (22 a) is arranged in the center beam web (22).
3. A prefabricated T-beam bridge according to claim 1, wherein said steel structural bottom plate (3) is composed of a bottom plate upper flange steel plate (3 a), a bottom plate steel web (3 b), and a bottom plate U-shaped lower flange steel plate (3 c), said bottom plate U-shaped lower flange steel plate (3 c) and said bottom plate upper flange steel plate (3 a) are welded together by said bottom plate steel web (3 b), a bottom plate concrete (3 e) is provided in said bottom plate U-shaped lower flange steel plate (3 c), and a bottom plate longitudinal pre-stress steel bundle (3 f) is tensioned in said bottom plate concrete (3 e).
4. The prefabricated T-beam bridge of claim 3, wherein the bottom plate top flange steel plate (3 a) is provided with a bottom plate top flange shear pin (3 d), the two side beam webs (12) of the prestressed concrete side beam (1) are connected with the steel structure bottom plate (3) through the bottom plate top flange shear pin (3 d), and the two middle beam webs (22) of the prestressed concrete middle beam (2) are connected with the steel structure bottom plate (3) through the bottom plate top flange shear pin (3 d).
5. A prefabricated T-beam bridge according to claim 1, characterized in that concrete diaphragms (8) are arranged between two adjacent prestressed concrete center beams (2) and between the prestressed concrete center beams (2) and the prestressed concrete side beams (1), and the concrete diaphragms (8) are arranged at the ends, 1/4 span and span of the bridge in the longitudinal direction of the bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220567093.6U CN217997784U (en) | 2022-03-15 | 2022-03-15 | Prefabricated T-beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220567093.6U CN217997784U (en) | 2022-03-15 | 2022-03-15 | Prefabricated T-beam bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217997784U true CN217997784U (en) | 2022-12-09 |
Family
ID=84286470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220567093.6U Active CN217997784U (en) | 2022-03-15 | 2022-03-15 | Prefabricated T-beam bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217997784U (en) |
-
2022
- 2022-03-15 CN CN202220567093.6U patent/CN217997784U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202131559U (en) | Corrugated steel web plate prestressed concrete continuous box girder | |
| CN113481826B (en) | Prefabricated assembled corrugated steel web plate combined box girder | |
| CN101230607A (en) | Structure combination parts for hollow slab | |
| CN105064195A (en) | Internal prestress steel and concrete combined simply supported girder bridge of prefabricated and assembled fish-bellied corrugated steel web and construction method thereof | |
| CN211689841U (en) | Steel-concrete superposed prefabricated combined beam bridge structure | |
| CN217997784U (en) | Prefabricated T-beam bridge | |
| CN215758473U (en) | Steel-concrete combined simply-supported T-beam bridge | |
| CN210086022U (en) | Assembled single-box multi-chamber corrugated steel web box girder | |
| CN101230605A (en) | Structure combination parts for hollow slab | |
| CN203383137U (en) | Transversely assembled corrugated steel web combined box girder | |
| CN109594461B (en) | Assembled steel concrete composite beam and forming method thereof | |
| CN211472112U (en) | Prefabricated corrugated steel web combination T-shaped girder bridge of assembling | |
| CN205188792U (en) | Prefabricated internal prestressing force steel and concrete composite simply supported girder bridge of assembling of fish belly wave form steel web | |
| CN115287996A (en) | Pier top UHPC-NC combined structure UHPC continuous box girder bridge and construction method thereof | |
| CN212000572U (en) | Truss type steel-concrete combined box-type channel | |
| CN209941469U (en) | Steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for straddle type monorail | |
| CN211922242U (en) | Full rigid frame bridge system for long and large intervals of rail transit | |
| CN112282207A (en) | Combined beam, spliced beam and subway station | |
| CN112281656A (en) | Combined multi-span bridge plate connecting structure | |
| CN111749114A (en) | Steel truss-UHPC combined beam bridge hogging moment area structure and construction method | |
| CN209798536U (en) | Inverted T-shaped steel beam-concrete combined beam structure of small and medium-span bridge | |
| CN217896172U (en) | Pier top UHPC-NC integrated configuration UHPC continuous box girder bridge | |
| CN101230667A (en) | Force-bearing type superposed component | |
| CN213951913U (en) | Structure for hogging moment area of steel-concrete combined continuous beam bridge | |
| CN212714472U (en) | Steel truss-UHPC composite beam bridge hogging moment area structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |