CN217839750U - Steel guide beam for incremental launching construction of large-scale curve steel box girder bridge - Google Patents
Steel guide beam for incremental launching construction of large-scale curve steel box girder bridge Download PDFInfo
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- CN217839750U CN217839750U CN202222320766.0U CN202222320766U CN217839750U CN 217839750 U CN217839750 U CN 217839750U CN 202222320766 U CN202222320766 U CN 202222320766U CN 217839750 U CN217839750 U CN 217839750U
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Abstract
The utility model discloses a steel guide beam for pushing construction of a large curve steel box girder bridge, which comprises a plurality of guide beam segments and a steel box girder which are connected in sequence; the lower ends of the guide beam sections are arranged in parallel, and the sections of the guide beam sections are sequentially increased; the steel box girder is fixedly connected with the guide girder segment at one end with a large section; each guide beam segment comprises 2 guide beam webs, 2 guide beam upper flange plates and 2 guide beam lower flange plates which are symmetrically arranged; a web vertical rib plate and a web horizontal rib plate are arranged in the web of the guide beam, and a lower wing plate stiffening rib plate is arranged between the web horizontal rib plate and the lower flange plate of the guide beam; a truss connecting system is fixedly arranged between the 2 guide beam webs. The utility model not only saves steel, but also is beneficial to enhancing rigidity and reducing deflection, and is convenient for the front end of the steel guide beam to be rapidly pier-mounted in the pushing process; the residual waste is processed by adopting the steel beam, so that the waste is recycled, and the construction cost is saved; the utility model discloses simple structure, the atress condition is clear and definite, and the software of being convenient for carries out the analog analysis to it.
Description
Technical Field
The utility model relates to a bridge construction equipment technical field, more specifically say so and relate to a steel nose girder that large-scale curve steel box girder bridge top pushes away construction usefulness.
Background
In recent years, overpass bridges are mainly steel bridges and are limited by the requirements of field and road traffic protection, especially, in many cases, the construction of the overpass steel bridges needs multiple measures such as traffic interruption, road change and the like, and if field splicing and installation are adopted, the welding workload is large, the overhead operation is large, and the safety risk is high. If integral hoisting is adopted, large-scale equipment is needed, the installation precision cannot be guaranteed, and road sealing construction is needed on site, so that a lot of troubles are caused. The pushing method has the advantages of no need of breaking traffic, convenient construction and the like, and is gradually widely applied to the construction of the overpass bridge. The guide beam is indispensable in the pushing construction process of the bridge, but the existing guide beam is complex in structure and heavy in weight, and when the steel box girder is pushed, the stability of the steel box girder in the moving process is poor, the deflection of the guide beam is large, the upper pier is not easy, and the like.
Therefore, how to provide a steel guide beam which can not only greatly improve the construction safety factor, but also has a smaller section at the front end of the guide beam, is convenient for the front end of the steel guide beam to be quickly pier-mounted in the pushing process, and has higher rigidity and integrity for the pushing construction of the large-scale curve steel box girder bridge is one of the technical problems to be solved urgently in the field.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a steel guide beam for incremental launching construction of a large-scale curve steel box girder bridge, which is characterized in that the front end of a main bridge steel box girder is provided with a steel guide beam with the same rigidity but smaller self weight, and the steel guide beam reaches a temporary pier before the steel box girder during incremental launching construction, so that the steel box girder is converted into a simply supported state from a cantilever state, and the construction safety coefficient is greatly improved; and the section of the front end of the guide beam is smaller, so that the front end of the steel guide beam can be conveniently and quickly erected in the pushing process. And the transverse connection and the upper and lower plane connection formed by the steel pipes are arranged between the two main beams, so that the whole guide beam is integrated, and the rigidity and the integrity of the guide beam are improved. The purpose is to solve the above-mentioned deficiency and offer.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken:
a steel guide beam for incremental launching construction of a large-scale curve steel box girder bridge comprises a plurality of guide beam sections and a steel box girder which are sequentially connected; the lower ends of the guide beam sections are arranged in parallel, and the sections of the guide beam sections are sequentially increased; the steel box girder is fixedly connected with the guide girder segment at one end with a large section;
each guide beam segment comprises 2 guide beam webs, 2 guide beam upper flange plates and a guide beam lower flange plate which are symmetrically arranged; a web vertical rib plate and a web horizontal rib plate are arranged in the web of the guide beam, and a lower wing plate stiffening rib plate is arranged between the web horizontal rib plate and the lower flange plate of the guide beam; a truss connecting system is fixedly arranged among the 2 guide beam webs.
Preferably, adjacent two of the guide beam sections are connected through high-strength bolts.
Preferably, the guide beam segments are provided in 5.
Preferably, the 2 guide beam sections comprise a first guide beam section, a second guide beam section, a third guide beam section, a fourth guide beam section and a fifth guide beam section; the girder webs of the fifth girder segment are fixedly connected with the steel box girder by being inserted into the steel box girder.
Preferably, the girder web of the fifth girder segment is welded to the top plate, the bottom plate and the middle partition plate of the steel box girder.
Preferably, the guide beam web, the guide beam upper flange plate and the guide beam lower flange plate are fixedly connected to form an I-shaped structure.
Preferably, the truss connection system is composed of a horizontal cross rod, a horizontal diagonal rod, a vertical web member and a diagonal web member which are fixedly connected with each other.
The utility model discloses for prior art gain following technological effect:
the utility model has the advantages that the first guide beam section to the fifth guide beam section are arranged, the lower ends of the 5 guide beam sections are kept parallel and level, and the height of the cross section is increased in sequence, so that the steel is saved, and the rigidity is enhanced and the flexibility is reduced; and the section of the front end of the steel guide beam is smaller through the arrangement, so that the front end of the steel guide beam can be conveniently and quickly erected in the pushing process. The utility model provides a steel nose girder can adopt the remaining waste material processing of girder steel processing, need not to newly advance steel, makes the waste material can reutilization again, is favorable to saving construction cost. The steel guide beam mainly comprises various steel members, is connected by high-strength bolts mostly, and is convenient, fast and recyclable during dismantling. The utility model discloses simple structure, the atress condition is clear and definite, and the software of being convenient for carries out the analog analysis to it.
Drawings
Fig. 1 is a schematic structural view of a steel guide beam for incremental launching construction of a large-scale curve steel box girder bridge of the utility model;
FIG. 2 is a schematic view of a top view structure of a steel guide beam for incremental launching construction of a large-scale curved steel box girder bridge of the present invention;
fig. 3 is a top view of the truss connection system of the present invention;
fig. 4 is a front view of the truss connection system of the present invention.
In FIGS. 1-4: 1. a first guide beam segment; 2. a second guide beam segment; 3. a third guide beam segment; 4. a fourth guide beam segment; 5. a fifth guide beam segment; 6. a steel box girder; 7. a high-strength bolt; 8. a guide beam web; 9. a flange plate on the guide beam; 10. a lower flange plate of the guide beam; 11. a web vertical rib plate; 12. a web horizontal rib plate; 13. a lower wing plate stiffening rib plate; 14. a truss connection system; 15. a horizontal cross bar; 16. a horizontal diagonal bar; 17. a vertical web member; 18. a diagonal web member.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 efforts all belong to the protection scope of the present invention.
Examples
Referring to fig. 1-4, the steel guide beam for incremental launching construction of a large-scale curve steel box girder bridge comprises 5 guide beam sections and a steel box girder 6 which are sequentially connected; the lower ends of the 5 guide beam sections are arranged in parallel, and the sections of the 5 guide beam sections are sequentially increased; the steel box girder 6 is fixedly connected with the guide girder segment at one end with a large section; each guide beam segment comprises 2 guide beam webs 8, 2 guide beam upper flange plates 9 and guide beam lower flange plates 10 which are symmetrically arranged; a web vertical rib plate 11 and a web horizontal rib plate 12 are arranged in the guide beam web 8, and a lower wing plate stiffening rib plate 13 is arranged between the web horizontal rib plate 12 and the guide beam lower flange plate 10; a truss connecting system 14 is fixedly arranged between the 2 guide beam webs 8.
Two adjacent guide beam sections are connected through high-strength bolts 7; the 5 guide beam sections are respectively a first guide beam section 1, a second guide beam section 2, a third guide beam section 3, a fourth guide beam section 4 and a fifth guide beam section 5; the girder web 8 of the fifth girder segment 5 is fixedly connected thereto by inserting the steel box girder 6.
In this embodiment, the girder web 8 of the fifth girder segment 5 is welded to the top plate, the bottom plate and the middle partition plate of the steel box girder 6.
In this embodiment, the web 8 of the guide beam, the upper flange plate 9 of the guide beam and the lower flange plate 10 of the guide beam are fixedly connected to form an i-shaped structure.
In this embodiment, the truss connection is composed of a horizontal cross bar 15, a horizontal diagonal bar 16, a vertical web member 17, and a diagonal web member 18, which are fixedly connected to each other.
In other embodiments, the number of the guide beam sections can be adjusted according to the requirements of actual conditions.
The utility model has the advantages that the first guide beam segment to the fifth guide beam segment are arranged, the lower ends of the 5 guide beam segments are kept level, and the height of the cross section is increased in sequence, so that the steel is saved, and the rigidity is enhanced and the deflection is reduced; and the section of the front end of the steel guide beam is smaller through the arrangement, so that the front end of the steel guide beam can be conveniently and quickly erected in the pushing process. The utility model provides a steel nose girder can adopt the remaining waste material processing of girder steel processing, need not to newly advance steel, makes the waste material can reutilization again, is favorable to saving construction cost. The steel guide beam mainly comprises various steel members, is connected by high-strength bolts mostly, and is convenient, fast and recyclable during dismantling. The utility model discloses simple structure, the atress condition is clear and definite, and the software of being convenient for carries out the analog analysis to it.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (7)
1. A steel guide beam for large-scale curve steel box girder bridge pushing construction is characterized by comprising a plurality of guide beam sections and a steel box girder (6) which are sequentially connected; the lower ends of the guide beam sections are arranged in parallel, and the sections of the guide beam sections are sequentially increased; the steel box girder (6) is fixedly connected with the guide girder segment at one end with a large section;
each guide beam segment comprises 2 guide beam webs (8), 2 guide beam upper flange plates (9) and guide beam lower flange plates (10) which are symmetrically arranged; a web vertical rib plate (11) and a web horizontal rib plate (12) are arranged in the guide beam web plate (8), and a lower wing plate stiffening rib plate (13) is arranged between the web horizontal rib plate (12) and the guide beam lower flange plate (10); a truss connecting system (14) is fixedly arranged between 2 guide beam webs (8).
2. The steel guide beam for incremental launching construction of the large-scale curved steel box girder bridge according to claim 1, wherein two adjacent guide beam sections are connected through high-strength bolts (7).
3. The steel guide beam for incremental launching construction of the large-scale curved steel box girder bridge according to claim 2, wherein the number of the guide beam sections is 5.
4. The steel guide beam for incremental launching construction of the large-scale curve steel box girder bridge according to claim 3, wherein the 5 guide beam sections are respectively a first guide beam section (1), a second guide beam section (2), a third guide beam section (3), a fourth guide beam section (4) and a fifth guide beam section (5); the girder web (8) of the fifth girder segment (5) is fixedly connected with the steel box girder (6) by being inserted into the steel box girder.
5. The steel guide beam for incremental launching construction of the large-scale curve steel box girder bridge according to claim 4, wherein the guide beam web (8) of the fifth guide beam section (5) is welded and connected with a top plate, a bottom plate and a middle clapboard of the steel box girder (6).
6. The steel guide beam for incremental launching construction of the large-scale curved steel box girder bridge according to claim 1, wherein the guide beam web (8), the guide beam upper flange plate (9) and the guide beam lower flange plate (10) are fixedly connected to form an I-shaped structure.
7. The steel guide beam for incremental launching construction of the large-scale curved steel box girder bridge according to claim 1, wherein the truss connection system is composed of a horizontal cross rod (15), a horizontal diagonal rod (16), a vertical web member (17) and a diagonal web member (18) which are fixedly connected with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222320766.0U CN217839750U (en) | 2022-09-01 | 2022-09-01 | Steel guide beam for incremental launching construction of large-scale curve steel box girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222320766.0U CN217839750U (en) | 2022-09-01 | 2022-09-01 | Steel guide beam for incremental launching construction of large-scale curve steel box girder bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217839750U true CN217839750U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222320766.0U Active CN217839750U (en) | 2022-09-01 | 2022-09-01 | Steel guide beam for incremental launching construction of large-scale curve steel box girder bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217839750U (en) |
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2022
- 2022-09-01 CN CN202222320766.0U patent/CN217839750U/en active Active
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