CN214992998U - Temporary consolidation device for main beam of cable-stayed bridge - Google Patents
Temporary consolidation device for main beam of cable-stayed bridge Download PDFInfo
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- CN214992998U CN214992998U CN202120018879.8U CN202120018879U CN214992998U CN 214992998 U CN214992998 U CN 214992998U CN 202120018879 U CN202120018879 U CN 202120018879U CN 214992998 U CN214992998 U CN 214992998U
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Abstract
The application discloses a temporary consolidation device for a main girder of a cable-stayed bridge, which comprises a main pier, a main girder positioned above the main pier, a rigid reinforcement structure and a plurality of flexible reinforcement structures, wherein the main pier is arranged on a bearing platform, the rigid reinforcement structure is arranged at the upper part of the main pier, and the plurality of flexible reinforcement structures are arranged in the circumferential direction of the main pier; the rigid reinforcing structure comprises a supporting structure arranged at the upper part of the main pier and a temporary support, and two sides of the main beam are supported on the supporting structure; the flexible reinforcing structure comprises a steel pipe and a plurality of reinforcing steel bars arranged in the steel pipe, the reinforcing steel bars and the steel pipe are arranged in parallel in the extending direction, the lower ends of the reinforcing steel bars are fixed in the bearing platform through a connecting structure, the upper ends of the reinforcing steel bars extend into a box girder bottom plate of the main girder, and the upper ends of the reinforcing steel bars are fastened with the box girder bottom plate through bolts; the lower end of the steel pipe is fixed with the bearing platform, and the upper end of the steel pipe is connected with the supporting structure. The problem of among the prior art main mound and girder joint strength inadequately, and lead to the construction of girder to have certain potential safety hazard is solved in this application, has guaranteed cable-stay bridge's normal construction.
Description
Technical Field
The application belongs to the technical field of cable-stayed bridges, and particularly relates to a temporary consolidation device for a main beam of a cable-stayed bridge.
Background
A cable-stayed bridge is also called a diagonal tension bridge, is a bridge with a main beam directly pulled on a bridge tower by a plurality of guys, and is a structural system formed by combining a pressure-bearing tower, a pulled guy and a bending-bearing beam body. It can be seen as a multi-span elastically supported continuous beam with guy cables instead of buttresses. It can reduce the bending moment in the beam body, reduce the building height, lighten the structural weight and save materials. The cable-stayed bridge mainly comprises a cable tower, a main beam and a stay cable.
The upper structure of part of the cable-stayed bridge is a tower-beam consolidation system, the pier and the beam are separated, and when the main beam is constructed by adopting the prestressed reinforced concrete continuous beam hanging basket cantilever, the structural stability of the main beam needs to be ensured. Particularly, when the cable-stayed bridge is constructed in a typhoon landing area and the connection strength of the main pier and the main beam is insufficient, the construction of the main beam has certain potential safety hazards, and the normal construction of the cable-stayed bridge is influenced.
Disclosure of Invention
The embodiment of the application provides a cable-stay bridge girder concreties device temporarily, has solved among the prior art main mound and girder joint strength inadequately, and leads to the problem that there is certain potential safety hazard in the construction of girder, has guaranteed cable-stay bridge's normal construction.
The embodiment of the utility model provides a cable-stay bridge girder concreties device temporarily, its characterized in that: the main pier is arranged on a bearing platform, the rigid reinforcing structure is arranged at the upper part of the main pier, and the flexible reinforcing structures are arranged in the circumferential direction of the main pier;
the rigid reinforcing structure comprises a supporting structure arranged at the upper part of the main pier and a temporary support arranged between the main pier and a main beam, wherein two sides of the main beam are supported on the supporting structure;
the flexible reinforcing structure comprises a steel pipe and a plurality of steel bars arranged in the steel pipe, the steel bars are arranged in parallel with the extending direction of the steel pipe, the lower ends of the steel bars are fixed in the bearing platform through a connecting structure, the upper ends of the steel bars extend into a box girder bottom plate of the main girder, and the upper ends of the steel bars are fastened with the box girder bottom plate through bolts; the lower end of the steel pipe is fixed with the bearing platform, and the upper end of the steel pipe is connected with the supporting structure.
Furthermore, the connecting structure comprises an embedded anchor arranged on the bearing platform and a steel bar mesh arranged in the bearing platform, the lower end of the steel pipe is fixed with the bearing platform through the embedded anchor, and the lower ends of the steel bars penetrate through the embedded anchor and then are connected with the steel bar mesh.
Further, the supporting structure comprises a connecting rod, a support rod, a reinforcing rod, a support plate and a plurality of height-adjustable support columns;
the connecting rod, the supporting plate and the supporting rod are all horizontally arranged, one end of the connecting rod is connected with the side wall of the main pier through a first embedded part, and the other end of the connecting rod is connected with the steel pipe;
one end of the brace rod is connected with the side wall of the main pier through a fastening structure, the other end of the brace rod is connected with one end of an obliquely arranged reinforcing rod, the other end of the reinforcing rod is connected to the middle of the steel pipe, and the middle of the brace rod is connected with the steel pipe;
the fagging is located the top of vaulting pole, is provided with between fagging and the vaulting pole the support column, the lower extreme butt of fagging upper end and girder, the middle part of fagging with the steel pipe is connected.
Further, the fastening structure is including setting up second built-in fitting at the main mound lateral wall and the inserted bar that one end inserted the main mound lateral wall, and the inserted bar other end inserts the vaulting pole is close to the one end of main mound, the vaulting pole tip is connected with the main mound lateral wall through the second built-in fitting.
Further, the fastening structure further comprises a plurality of fastening plates arranged in the main pier at intervals, the fastening plates are vertically arranged, and the second embedded parts penetrate through the fastening plates and are fixedly connected with the fastening plates.
Further, the temporary support includes that the concrete props platform, fine sand bed course and reinforcing bar, and the circumference of fine sand bed course is provided with the detachable template, the concrete props the platform and supports at the top of main mound through the fine sand bed course, and the girder supports the concrete props bench, the reinforcing bar passes the concrete props platform, the reinforcing bar lower extreme stretch into in the main mound and with main mound in the reinforcing bar net piece be connected, pass through bolt and box girder fastening behind the case roof beam that the girder was passed to the reinforcing bar upper end.
Further, plastic films are laid between the main pier and the temporary support and between the main beam and the temporary support.
Further, the number of reinforcing bar net piece is a plurality of, and a plurality of reinforcing bar net pieces set up at interval in vertical direction.
Furthermore, the part of the steel bar, which is positioned on the box girder, is sleeved with a corrugated pipe.
The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:
the embodiment of the utility model provides a cable-stay bridge girder temporary consolidation device, the device is when using, the girder supports on main mound through interim support, bearing structure and steel pipe are connected simultaneously for main mound, bearing structure and flexible reinforced structure can combine as an organic wholely, therefore flexible reinforced structure and rigid reinforced structure can improve the stability of girder, and improved anti platform ability, have avoided cable-stay bridge to have certain potential safety hazard problem because of intensity is not enough when being under construction; when the girder adopts prestressed reinforced concrete continuous beam to hang basket cantilever construction, on being fixed in the main pier temporarily through rigid reinforcement structure and flexible reinforced structure, and then guaranteed cable-stay bridge's normal construction, rigid reinforcement structure and flexible reinforced structure adopt to dismantle to connect and are convenient for dismantle it after the cable-stay bridge construction finishes.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are 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 the embodiment of the utility model provides a cable-stay bridge girder concreties the structural schematic diagram of device temporarily.
Reference numerals: 1-main pier; 2-main beam; 3-a cushion cap; 4-a support structure; 41-a connecting rod; 42-a strut; 43-a stiffener; 44-bracing plate; 45-support column; 46-fastening structure 461-bayonet; 5-temporary support; 51-concrete supporting platform; 52-fine sand cushion; 6-steel pipe; 7-reinforcing steel bars; 8-a linking structure; 81-embedding an anchorage device; 9-a box girder; 10-reinforcing mesh.
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 some, but not all, embodiments of the present invention. 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.
As shown in fig. 1, the temporary girder consolidation device for a cable-stayed bridge according to an embodiment of the present invention includes a main pier 1, a girder 2 located above the main pier 1, a rigid reinforcement structure, and a plurality of flexible reinforcement structures, wherein the main pier 1 is disposed on a platform 3, the rigid reinforcement structure is disposed on an upper portion of the main pier 1, and the plurality of flexible reinforcement structures are disposed in a circumferential direction of the main pier 1;
the rigid reinforcing structure comprises a supporting structure 4 arranged at the upper part of the main pier 1 and a temporary support 5 arranged between the main pier 1 and a main beam 2, wherein two sides of the main beam 2 are supported on the supporting structure 4;
the flexible reinforcing structure comprises a steel pipe 6 and a plurality of reinforcing steel bars 7 arranged in the steel pipe 6, the reinforcing steel bars 7 are arranged in parallel with the extending direction of the steel pipe 6, the lower ends of the reinforcing steel bars 7 are fixed in the bearing platform 3 through a connecting structure 8, the upper ends of the reinforcing steel bars 7 extend into a box girder 9 bottom plate of the main girder 2, and the upper ends of the reinforcing steel bars 7 are fastened with the box girder 9 bottom plate through bolts; the lower end of the steel pipe 6 is fixed with the bearing platform 3, and the upper end of the steel pipe 6 is connected with the supporting structure 4.
It should be noted that the steel pipe 6 having a large pipe diameter of 1000 × 16mm is used as the steel pipe 6, the number of the reinforcing bars 7 is 6, the reinforcing bars 7 are the finish-rolled twisted bars 7 of JL Φ 32, and the tension of the finish-rolled twisted bars 7 is 150 kN. When the flexible reinforcing structures on the two sides of the main pier 1 are installed, a construction mode of symmetrical and synchronous tensioning on the two sides is adopted. The bearing capacity of the flexible reinforced structure is high, and the stability of the main beam 2 is improved.
Girder 2 supports on main mound 1 through temporary support 5, and bearing structure 4 is connected with steel pipe 6 simultaneously for main mound 1, bearing structure 4 and flexible reinforced structure can combine as an organic whole, and consequently flexible reinforced structure and rigid reinforced structure have further improved girder 2's stability, and have improved anti platform ability, have avoided cable-stay bridge intensity when the construction not enough and have the problem of certain potential safety hazard. When the main beam 2 adopts the prestressed reinforced concrete continuous beam hanging basket cantilever construction, the rigid reinforcing structure and the flexible reinforcing structure are temporarily fixed on the main pier 1, so that the normal construction of the cable-stayed bridge is ensured, and the rigid reinforcing structure and the flexible reinforcing structure are detachably connected so as to be detached after the cable-stayed bridge construction is finished.
In this embodiment, the connection structure 8 includes an embedded anchor 81 disposed on the bearing platform 3 and a steel bar mesh 10 disposed in the bearing platform 3, the lower end of the steel pipe 6 is fixed to the bearing platform 3 through the embedded anchor 81, and the lower ends of the steel bars 7 pass through the embedded anchor 81 and then are connected to the steel bar mesh 10.
It should be noted that the fixing by the pre-buried anchor 81 is convenient for installation and disassembly, and the reinforcing mesh 10 can improve the connection reliability of the lower end of the reinforcing bar 7.
In this embodiment, the supporting structure 4 includes a connecting rod 41, a brace 42, a reinforcing rod 43, a brace plate 44, and a plurality of height-adjustable supporting columns 45;
the connecting rod 41, the supporting plate 44 and the stay bar 42 are all horizontally arranged, one end of the connecting rod 41 is connected with the side wall of the main pier 1 through a first embedded part, and the other end of the connecting rod is connected with the steel pipe 6;
one end of the stay bar 42 is connected with the side wall of the main pier 1 through a fastening structure 46, the other end of the stay bar is connected with one end of a reinforcing bar 43 which is obliquely arranged, the other end of the reinforcing bar 43 is connected with the middle part of the steel pipe 6, and the middle part of the stay bar 42 is connected with the steel pipe 6;
the supporting plate 44 is positioned above the supporting rod 42, the supporting column 45 is arranged between the supporting plate 44 and the supporting rod 42, the upper end of the supporting plate 44 is abutted against the lower end of the main beam 2, and the middle part of the supporting plate 44 is connected with the steel pipe 6.
It should be noted that, the structural arrangement of the connecting rods 41, the supporting rods 42, the reinforcing rods 43 and the supporting plates 44 can effectively improve the stability of the supporting structure 4 and the reliability of connection with the main piers 1, the steel pipes 6 and the main beams 2, thereby improving the anti-typhoon capacity. After the supporting structure 4 is installed, the supporting columns 45 are adjusted to enable the height of the supporting structures to rise, then the supporting plates 44 move upwards, so that the gravity of the main beam 2 can fall on the supporting plates 44 to the maximum extent, then the middle parts of the supporting plates 44 are connected with the steel pipes 6, and the purpose of reinforcement is achieved. The support post 45 may take the form of a stud and threaded sleeve.
In this embodiment, the fastening structure 46 includes a second embedded part disposed on the side wall of the main pier 1, and an inserting rod 461 with one end inserted into the side wall of the main pier 1, the other end of the inserting rod 461 is inserted into one end of the stay bar 42 close to the main pier 1, and the end of the stay bar 42 is connected to the side wall of the main pier 1 through the second embedded part.
It should be noted that the second embedded parts and the insertion rods 461 can firmly connect the ends of the stay rods 42 with the side walls of the main pier 1 and can be easily disassembled.
In this embodiment, the fastening structure 46 further includes a plurality of fastening plates disposed at intervals in the main pier 1, the fastening plates are disposed vertically, and the second embedded parts penetrate through the fastening plates and are fixedly connected with the fastening plates.
It should be noted that the fastening plate further improves the fixing ability of the second embedded part, and ensures the structural stability of the stay 42.
In this embodiment, temporary support 5 includes concrete brace 51, fine sand bed course 52 and reinforcing bar 7, and the circumference of fine sand bed course 52 is provided with the detachable template, concrete brace 51 supports at the top of main mound 1 through fine sand bed course 52, and girder 2 supports on the concrete brace 51, reinforcing bar 7 passes concrete brace 51, reinforcing bar 7 lower extreme stretch into in the main mound 1 and be connected with the reinforcing bar net piece 10 in the main mound 1, and reinforcing bar 7 upper end is passed behind the box girder 9 of girder 2 and is fastened with box girder 9 through the bolt.
It should be noted that, after the formwork is disassembled, the fine sand cushion 52 can be taken out conveniently, so as to facilitate the disassembly of the concrete support 51. The reinforcing steel bars 7 improve the connection reliability of the temporary support 5 with the main beam 2 and the main pier 1.
In this embodiment, plastic films are respectively laid between the main pier 1 and the temporary support 5, and between the main beam 2 and the temporary support 5.
It should be noted that the plastic film can facilitate the detachment of the temporary support 5, thereby improving the working efficiency of the worker.
In this embodiment, the number of the reinforcing mesh sheets 10 is plural, and the plurality of reinforcing mesh sheets 10 are arranged at intervals in the vertical direction.
It should be noted that the fixing effect of the plurality of reinforcing mesh sheets 10 is better.
In this embodiment, the portion of the steel bar 7 located on the box girder 9 is sleeved with a corrugated pipe.
It should be noted that, the corrugated pipe can prevent the steel bars 7 from affecting the normal construction of the box girder 9, and can protect the steel bars 7.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (9)
1. The utility model provides a cable-stay bridge girder concreties device temporarily which characterized in that: the main pier comprises a main pier (1), a main beam (2) positioned above the main pier (1), a rigid reinforcing structure and a plurality of flexible reinforcing structures, wherein the main pier (1) is arranged on a bearing platform (3), the rigid reinforcing structure is arranged at the upper part of the main pier (1), and the flexible reinforcing structures are arranged in the circumferential direction of the main pier (1);
the rigid reinforcing structure comprises a supporting structure (4) arranged at the upper part of the main pier (1) and a temporary support (5) arranged between the main pier (1) and a main beam (2), wherein two sides of the main beam (2) are supported on the supporting structure (4);
the flexible reinforcing structure comprises a steel pipe (6) and a plurality of reinforcing steel bars (7) arranged in the steel pipe (6), the reinforcing steel bars (7) are arranged in parallel with the extending direction of the steel pipe (6), the lower ends of the reinforcing steel bars (7) are fixed in the bearing platform (3) through connecting structures (8), the upper ends of the reinforcing steel bars (7) extend into a box girder (9) bottom plate of the main girder (2), and the upper ends of the reinforcing steel bars (7) are fastened with the box girder (9) bottom plate through bolts; the lower end of the steel pipe (6) is fixed with the bearing platform (3), and the upper end of the steel pipe (6) is connected with the supporting structure (4).
2. The temporary consolidation device for main girder of cable-stayed bridge according to claim 1, characterized in that: the connecting structure (8) comprises an embedded anchor (81) arranged on the bearing platform (3) and a steel bar mesh (10) arranged in the bearing platform (3), the lower end of the steel pipe (6) is fixed with the bearing platform (3) through the embedded anchor (81), and the lower ends of the steel bars (7) penetrate through the embedded anchor (81) and then are connected with the steel bar mesh (10).
3. The temporary consolidation device for main girder of cable-stayed bridge according to claim 1, characterized in that: the supporting structure (4) comprises a connecting rod (41), a stay bar (42), a reinforcing rod (43), a stay plate (44) and a plurality of height-adjustable support columns (45);
the connecting rod (41), the supporting plate (44) and the supporting rod (42) are all horizontally arranged, one end of the connecting rod (41) is connected with the side wall of the main pier (1) through a first embedded part, and the other end of the connecting rod is connected with the steel pipe (6);
one end of a support rod (42) is connected with the side wall of the main pier (1) through a fastening structure (46), the other end of the support rod is connected with one end of a reinforcing rod (43) which is obliquely arranged, the other end of the reinforcing rod (43) is connected to the middle of the steel pipe (6), and the middle of the support rod (42) is connected with the steel pipe (6);
the fagging (44) are located the top of vaulting pole (42), are provided with between fagging (44) and vaulting pole (42) support column (45), fagging (44) upper end and the lower extreme butt of girder (2), the middle part of fagging (44) with steel pipe (6) are connected.
4. The temporary consolidation device for main girder of cable-stayed bridge according to claim 3, characterized in that: fastening structure (46) insert the inserted bar (461) of main mound (1) lateral wall including setting up second built-in fitting and the one end at main mound (1) lateral wall, and inserted bar (461) other end inserts vaulting pole (42) are close to the one end of main mound (1), vaulting pole (42) tip is connected with main mound (1) lateral wall through the second built-in fitting.
5. The temporary consolidation device for main girder of cable-stayed bridge according to claim 4, characterized in that: the fastening structure (46) further comprises a plurality of fastening plates arranged in the main pier (1) at intervals, the fastening plates are vertically arranged, and the second embedded parts penetrate through the fastening plates and are fixedly connected with the fastening plates.
6. The temporary consolidation device for main girder of cable-stayed bridge according to claim 1, characterized in that: temporary support (5) include concrete brace table (51), fine sand bed course (52) and reinforcing bar (7), and the circumference of fine sand bed course (52) is provided with the detachable template, concrete brace table (51) supports at the top of main mound (1) through fine sand bed course (52), and girder (2) support on concrete brace table (51), reinforcing bar (7) pass concrete brace table (51), reinforcing bar (7) lower extreme stretch into in main mound (1) and be connected with reinforcing bar net piece (10) in main mound (1), pass through bolt and case roof beam (9) fastening behind case roof beam (9) that girder (2) were passed to reinforcing bar (7) upper end.
7. The temporary consolidation device for main girder of cable-stayed bridge according to claim 1, characterized in that: and plastic films are respectively paved between the main pier (1) and the temporary support (5) and between the main beam (2) and the temporary support (5).
8. The temporary consolidation device for main girder of cable-stayed bridge according to any one of claims 2 or 6, characterized in that: the number of the steel bar net pieces (10) is multiple, and the steel bar net pieces (10) are arranged at intervals in the vertical direction.
9. The temporary consolidation device for main girder of cable-stayed bridge according to any one of claims 2 or 6, characterized in that: the corrugated pipe is sleeved on the part, located on the box girder (9), of the steel bar (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120018879.8U CN214992998U (en) | 2021-01-06 | 2021-01-06 | Temporary consolidation device for main beam of cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120018879.8U CN214992998U (en) | 2021-01-06 | 2021-01-06 | Temporary consolidation device for main beam of cable-stayed bridge |
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| Publication Number | Publication Date |
|---|---|
| CN214992998U true CN214992998U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120018879.8U Active CN214992998U (en) | 2021-01-06 | 2021-01-06 | Temporary consolidation device for main beam of cable-stayed bridge |
Country Status (1)
| Country | Link |
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| CN (1) | CN214992998U (en) |
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2021
- 2021-01-06 CN CN202120018879.8U patent/CN214992998U/en active Active
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