CN215668974U - Movable steering device for external beam of corrugated steel web composite beam bridge body - Google Patents
Movable steering device for external beam of corrugated steel web composite beam bridge body Download PDFInfo
- Publication number
- CN215668974U CN215668974U CN202122094357.9U CN202122094357U CN215668974U CN 215668974 U CN215668974 U CN 215668974U CN 202122094357 U CN202122094357 U CN 202122094357U CN 215668974 U CN215668974 U CN 215668974U
- Authority
- CN
- China
- Prior art keywords
- steel
- pipe
- steering
- outer sleeve
- external
- 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
Abstract
A central hole is processed on a splice plate, stiffening ribs are respectively arranged on the upper portion and the lower portion of the splice plate, an outer sleeve steel pipe is arranged on the stiffening ribs in the central hole, a steering pipe is arranged in the outer sleeve steel pipe, the central line of the steering pipe coincides with the central line of the outer sleeve steel pipe, and cement concrete is filled between the steering pipe and the outer sleeve steel pipe. The external prestress steel beam is installed on the steel bridge and penetrates into the steel bridge, and the external prestress steel beam is vertically moved to realize the readjustment of the external beam shape, so that the prestress loss caused by the relaxation of the external prestress steel beam is solved, the vertical shear distribution of the external prestress steel beam is adjusted, the stress performance of the steel bridge is optimized, the cracking problem of a bridge deck is solved, the durability of the steel bridge is improved, and the damage of the diaphragm caused by the long-term local overlarge stress can be repaired.
Description
Technical Field
The utility model belongs to the technical field of roads, and particularly relates to a bridge device.
Background
The corrugated steel web composite beam bridge has become one of competitive bridge types in recent years due to the superior stress performance, and the novel corrugated web composite bridge with the bottom plate and the diaphragm plate both made of steel plates gradually becomes the development trend of the bridge type. In order to improve the overall rigidity of the structure and reduce vibration and elastic deformation, external prestress steel bundles are generally arranged in the beam body.
The linear shape of the external prestressed steel beam usually comprises a circular arc line or a broken line with a certain curvature, and the linear change of the external prestressed steel beam is realized by arranging a steering device. At present, the steering device of the external prestressed steel beam mostly adopts a sleeve joint structure and consists of a steering steel pipe, a penetrating steel pipe and an outer sleeve steel pipe. The steel beam passes through the steering steel pipe, and the steering steel pipe is designed into a smooth curve according to the steering line shape of the steel beam and is bent in a factory; the penetrating steel pipe is a straight pipe with the diameter larger than that of the steering steel pipe and is as long as the steering steel pipe. The steering steel pipe and the penetrating steel pipe are sleeved, and epoxy mortar is filled into the middle gap to form a whole, so that the steering pipe with the inner curve and the outer straight is formed. The outer side of the steering pipe is provided with an outer sleeve steel pipe, the outer sleeve steel pipe is connected with the bridge bogie or directly embedded into the concrete steering partition wall, and a stainless steel plate is filled between the steering pipe and the outer sleeve steel pipe so as to reduce the friction force between the steering pipe and the outer sleeve steel pipe and realize the free rotation of the steering pipe in the sleeve. Therefore, the traditional steering tube has complex structure and higher processing and manufacturing requirements, and cannot be moved again after being installed.
Aiming at the defects that the traditional sleeved steering device is complex in structure, high in processing and manufacturing requirements, incapable of moving again after being installed and the like, the movable steering device of the wave-shaped steel web combined beam bridge outer beam is invented, the real-time and rapid adjustment of the shape of the outer beam is realized, the requirement on the initial installation precision of the steering device is reduced, and the adaptability to the shape of a complex outer prestressed steel beam is enhanced.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the movable steering device for the external beam of the corrugated steel web combined beam bridge, which has the advantages of reasonable design, simple structure and good steering effect.
The technical scheme for solving the technical problems is as follows: the splice plate is provided with a central hole, the splice plate is respectively provided with stiffening ribs at the upper part and the lower part, an outer sleeve steel pipe is arranged on the stiffening ribs in the central hole, a steering pipe is arranged in the outer sleeve steel pipe, the central line of the steering pipe coincides with the central line of the outer sleeve steel pipe, and cement concrete is filled between the steering pipe and the outer sleeve steel pipe.
The splice plate is two plates which are vertically arranged and are connected or connected into a whole and are symmetrically spaced.
The inner diameter of the outer sleeve steel pipe is 180-200 mm, and the outer diameter of the steering pipe is 120-160 mm.
The inner diameter of the outer sleeve steel pipe is 190mm, and the outer diameter of the steering pipe is 140 mm.
The optimum alpha angle between the central line of the steering tube and the plane of the splicing plate is 85 degrees.
Compared with the prior art, the utility model has the following beneficial effects:
the external in-vitro prestressed steel beam is installed on a steel bridge and penetrates into the steel bridge, and the external in-vitro prestressed steel beam is vertically moved to realize readjustment of the shape of the external beam, so that the problem of prestress loss caused by relaxation of the external in-vitro prestressed steel beam is solved; the vertical shear distribution of the external prestressed steel beams is adjusted, and the stress performance of the steel bridge is optimized; the cracking problem of the bridge deck is solved, and the durability of the steel bridge is improved; the damage of the diaphragm plate caused by local over-stress for a long time can be repaired. The utility model has the advantages of reasonable design, simple structure, good steering effect and the like, increases the rigidity of the steel bridge, reduces the midspan downward deflection of the beam body, avoids the cracking of the concrete bridge deck in the hogging moment area, and can be popularized and used on the steel bridge.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic view of the connection of the present invention to a steel bridge.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the present invention is not limited to these examples.
Example 1
In fig. 1, 2 and 3, the movable steering device for the external beam of the corrugated steel web composite beam bridge body of the embodiment is formed by connecting a splice plate 1, an outer sleeve steel pipe 2, a steering pipe 3 and a stiffening rib 4.
The two splicing plates 1 are fixedly connected through a thread fastening connector, central holes are machined in the central positions of the two splicing plates 1, bolt holes are machined in the two splicing plates 1, the bolt holes are groove-shaped through holes, and the bolt holes are used for being connected with the transverse partition plate 5 of the steel bridge through the thread fastening connector. The upper end of a transverse partition plate 5 is fixedly connected with an upper flange 6 of a steel bridge beam through a threaded fastening connector, the lower end of the transverse partition plate 5 is fixedly connected with a steel bottom plate 8 of the steel bridge beam through a threaded fastening connector, the splice plate 1 of the embodiment is two vertically arranged plates, 2 stiffening ribs 4 are respectively welded and connected on the upper portion and the lower portion of each splice plate 1, the stiffening ribs 4 are used for enhancing the rigidity of the splice plate 1, an outer sleeve steel pipe 2 is welded and connected on the stiffening ribs 4, the inner diameter of the outer sleeve steel pipe 2 is 190mm, a steering pipe 3 is sleeved in the outer sleeve steel pipe 2, the outer diameter of the steering pipe 3 is 140mm, the outer sleeve steel pipe 2 and the steering pipe 3 are steel pipes, the central line of the steering pipe 3 coincides with the central line of the outer sleeve steel pipe 2, and the included angle alpha between the central line of the steering pipe 3 and the plane of the splice plates 1 is 85 deg. Cement concrete is filled between the steering pipe 3 and the outer steel casing pipe 2.
Example 2
The stiffening ribs 4 are welded and connected with outer sleeve steel pipes 2, the inner diameter of each outer sleeve steel pipe 2 is 180mm, steering pipes 3 are sleeved in the outer sleeve steel pipes 2, the outer diameter of each steering pipe 3 is 120mm, the outer sleeve steel pipes 2 and the steering pipes 3 are steel pipes, the center lines of the steering pipes 3 are overlapped with the center lines of the outer sleeve steel pipes 2, and the included angle alpha between the center lines of the steering pipes 3 and the plane of the splicing plate 1 is 80 degrees. Cement concrete is filled between the steering pipe 3 and the outer steel casing pipe 2.
Other components and the coupling relationship of the components are the same as those in embodiment 1.
Example 3
The stiffening ribs 4 are welded and connected with outer sleeve steel pipes 2, the inner diameter of each outer sleeve steel pipe 2 is 200mm, steering pipes 3 are sleeved in the outer sleeve steel pipes 2, the outer diameter of each steering pipe 3 is 160mm, the outer sleeve steel pipes 2 and the steering pipes 3 are steel pipes, the center lines of the steering pipes 3 are overlapped with the center line of each outer sleeve steel pipe 2, and the included angle alpha between the center line of each steering pipe 3 and the plane of the splicing plate 1 is 88 degrees. Cement concrete is filled between the steering pipe 3 and the outer steel casing pipe 2.
Other components and the coupling relationship of the components are the same as those in embodiment 1.
The working principle of the utility model is as follows:
when the external prestressed steel beam is used on a steel bridge, the splice plate 1 is fixedly connected with the diaphragm plate 5 of the steel bridge through the threaded fastening connector, the external prestressed steel beam 7 penetrates into the steering tube 3, and two ends of the external prestressed steel beam 7 are anchored on a steel beam body to provide initial prestress for the bridge. The external prestressed steel beam 7 is a flexible steel strand, the steering tube 3 provides radial restraint for the external prestressed steel beam 7, the spatial line shape of the external prestressed steel beam 7 is shaped, and prestress is applied to the steel bridge. Axial friction exists between the external prestressed steel beams 7 and the inner wall of the steering tube 3, but the friction is small, so that the external prestressed steel beams 7 and the steering tube 3 are allowed to relatively displace under the conditions of vehicle load and temperature change. On the basis of realizing the spatial line shape of the steel bundle, the utility model can also carry out vertical movement, and the line shape of the external prestressed steel bundle 7 is adjusted again according to the stress requirement. The specific number of the steel bridges is specifically determined according to the length of the bridge and the deformation state of the external prestressed steel bundles 7.
The utility model is arranged on a steel bridge, solves the prestress loss caused by the relaxation of the external prestress steel beam 7, adjusts the vertical shear distribution of the external prestress steel beam 7 and optimizes the stress performance of the steel bridge; the transverse clapboard 5 of the steel bridge is repaired due to damage caused by overlarge local stress for a long time, the weak part is avoided, and the technical problem that the transverse clapboard 5 is damaged due to local stress is solved; the line shape of the external prestressed steel beam 7 is adjusted, the stress condition of the bridge deck slab in the hogging moment area is improved, the cracking problem of the bridge deck slab is solved, the durability of the steel bridge is improved, the rigidity of the steel bridge is increased, and the midspan downward deflection of the steel beam body is reduced.
Claims (6)
1. The utility model provides a movable steering device that external beam of wave form steel web combination beam bridge restrainted which characterized in that: a central hole is processed in the splice plate (1), stiffening ribs (4) are arranged on the splice plate (1) up and down respectively, an outer sleeve steel pipe (2) is arranged on the stiffening ribs (4) in the central hole, a steering pipe (3) is arranged in the outer sleeve steel pipe (2), the central line of the steering pipe (3) coincides with the central line of the outer sleeve steel pipe (2), and cement concrete is filled between the steering pipe (3) and the outer sleeve steel pipe (2).
2. The movable steering device for the external beam of the corrugated steel web composite beam bridge body according to claim 1, wherein: the splice plate (1) is two plates which are vertically arranged and are connected or connected into a whole and are symmetrically spaced.
3. The movable steering device for the external beam of the corrugated steel web composite beam bridge body according to claim 1, wherein: the inner diameter of the outer sleeve steel pipe (2) is 180-200 mm, and the outer diameter of the steering pipe (3) is 120-160 mm.
4. The movable steering device for the external beam of the corrugated steel web composite beam bridge body according to claim 1 or 3, wherein: the inner diameter of the outer sleeve steel pipe (2) is 190mm, and the outer diameter of the steering pipe (3) is 140 mm.
5. The movable steering device for the external beam of the corrugated steel web composite beam bridge body according to claim 1 or 3, wherein: the alpha included angle between the central line of the steering tube (3) and the plane of the splice plate (1) is 85 degrees.
6. The movable steering device for the external beam of the wave steel web composite beam bridge body according to claim 4, wherein: the included angle alpha between the central line of the steering tube (3) and the plane of the splice plate (1) is 85 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122094357.9U CN215668974U (en) | 2021-09-01 | 2021-09-01 | Movable steering device for external beam of corrugated steel web composite beam bridge body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122094357.9U CN215668974U (en) | 2021-09-01 | 2021-09-01 | Movable steering device for external beam of corrugated steel web composite beam bridge body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215668974U true CN215668974U (en) | 2022-01-28 |
Family
ID=79958333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122094357.9U Active CN215668974U (en) | 2021-09-01 | 2021-09-01 | Movable steering device for external beam of corrugated steel web composite beam bridge body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215668974U (en) |
-
2021
- 2021-09-01 CN CN202122094357.9U patent/CN215668974U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102261164B (en) | FRP (fibre-reinforced polymer)-concrete-steel double-wall combined tubular beam and beam-slab combined structure adopting same | |
| KR101229472B1 (en) | Steel pipe girder for bridge | |
| US20220364351A1 (en) | Beam coupler operating as a seismic brake, seismic energy dissipation device and seismic damage control device | |
| US20220025766A1 (en) | Reinforced concrete tubbing segment | |
| CN215668974U (en) | Movable steering device for external beam of corrugated steel web composite beam bridge body | |
| CN112761375B (en) | Instability-preventing reinforcing device for angle steel of transmission tower | |
| CN110820546A (en) | Concrete column high anti-seismic performance assembled connection structure | |
| CN111519973A (en) | Micro-space chimney shaking-stopping device | |
| LU502336B1 (en) | Stiffening longitudinal beam structure strengthening robustness of suspended bridge deck of half-through arch bridge and construction method thereof | |
| CN112982668B (en) | Horizontal curve prestressing force device of hollow structure of encorbelmenting greatly | |
| CN112197090A (en) | Pressure balance type corrugated compensator | |
| CN112176858A (en) | Expansion joint structure for corrugated steel plate-concrete combined structure | |
| CN112962425A (en) | Bridge shock absorber | |
| CN213479511U (en) | Pressure balance type corrugated compensator | |
| CN106015739A (en) | Clip-in type buckle arrestor with on-bottom stability being strengthened | |
| CN220747306U (en) | Buckling restrained brace member with fixed point yielding function | |
| CN220059575U (en) | Socket type steel pipe support for tunnel support | |
| CN210372497U (en) | Compound pull rod expansion joint | |
| CN217482180U (en) | Lining glass fiber reinforced plastic concrete pipe for enhancing strength of outer wall | |
| CN213361488U (en) | Corrugated compensator for engine | |
| CN109882677B (en) | Alkylation device reactor expansion joint | |
| CN219062752U (en) | Connecting device suitable for ocean platform trestle pipeline | |
| CN211548223U (en) | Semi-rigid horizontal reset connecting piece for prefabricated shear wall | |
| CN219117948U (en) | Assembled anchor box for arch bridge | |
| CN220285018U (en) | Friction type precast beam column concrete node based on human elbow joint research and development |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |