Temporary supporting structure of ramp box girder
The temporary support structure for ramp box girders simplifies and stabilizes the installation process by allowing precise vertical and horizontal adjustments, addressing the inefficiencies of manual alignment in existing methods.
Patent Information
- Application Number
- CN202422336151.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-24
AI Technical Summary
During the bridge erection process of highway interchange ramp bridges, the existing technology requires tedious cranes and manpower cooperation to ensure the precise docking of the ends of the box girder, resulting in inefficient construction.
The temporary support structure of the ramp box beam including a bracket part, a support plate and an adjustment unit is adopted. The precise alignment of the end of the box beam is achieved through height adjustment and sliding connection. The support structure consists of steel pipe columns, oblique support beams and horizontal support to enhance stability and bearing capacity, and accurately adjust with jacks and limit slide rails.
The box girder end docking process is simplified, construction efficiency is improved, bridges of different heights and spans are adapted to, the stability and safety of the support structure are enhanced, and structural deformation and displacement are reduced.
Smart Images
Figure CN223103502U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge erection, in particular to a temporary supporting structure of a ramp box girder. Background Art
[0002] Highway interchange ramp bridges generally have the characteristics of narrow cross-section and small radius curve. When it is necessary to erect large-span prefabricated beams in curved sections, it is often necessary to use a crane to lift the box beam and place it on pre-installed concrete columns or piers. Temporary supports are often set between the piers to support both ends of the box beam to improve the stability of the box beam installation and docking. In order to ensure that both ends of the box beam can be accurately docked with other box beam components, it is conventional to use a crane in conjunction with manpower to confirm whether the installation position is in place. The process is relatively cumbersome and time-consuming. Therefore, it is necessary to provide a support structure that is stable and convenient for hoisting the position of the ramp box beam. Utility Model Content
[0003] The utility model aims to provide a temporary supporting structure for a ramp box girder, so as to provide a supporting structure which is stable and convenient for hoisting the ramp box girder.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a temporary support structure of a ramp box girder, comprising a bracket portion, a support plate and an adjustment unit, the support plate being fixedly arranged on the bracket portion, an adjustment unit being arranged on both sides of the support plate, the adjustment unit comprising a support beam, a bottom plate and a height adjustment portion for adjusting the height of the bottom plate, the support beam being placed on the bottom plate and being slidably connected to the bottom plate.
[0005] The beneficial effects of this program are:
[0006] The temporary support structures in the technical solution are placed on both sides of the ramp piers when in use, one end of a box girder is placed on an adjustment unit, and the end of the other box girder docked with the box girder is placed on another adjustment unit on the support plate. The height of the support beam is adjusted by the height adjustment part, and the vertical position of the box girder end is accurately controlled to ensure that the two ends of the box girder are aligned in the height direction; when the height direction is aligned, the ends of the two box girders are aligned by sliding the support beam, and the support beam is placed on the bottom plate and slidably connected to the bottom plate, so that the box girder can slide freely in the horizontal direction. In this way, when the height adjustment is completed, the box girder can be aligned in the horizontal position by sliding, ensuring the accurate docking of the box girder ends, simplifying the complex process of manual measurement and position adjustment.
[0007] The height and sliding adjustment of the support beam in this technical solution allows the support structure to adapt to box beams of different heights and spans, and has strong versatility. Whether it is a small radius or a large span ramp bridge, it can adapt to various construction environments.
[0008] Preferably, as an improvement, the support part includes a plurality of steel pipe columns, diagonal bracing beams and horizontal supports. The steel pipe columns are connected by a plurality of horizontal supports and diagonal bracing beams, and connecting plates are fixed at the joints of the steel pipe columns with the diagonal bracing beams and horizontal supports.
[0009] The beneficial effects are as follows: The steel pipe columns form a support through connection with the horizontal supports. By setting the diagonal bracing beams, a triangular support structure is formed, improving the stability of the overall structure, capable of bearing the weight and lateral force during the hoisting of the box girder, enhancing the bearing capacity of the support, capable of evenly dispersing the vertical load from the box girder to multiple columns, avoiding excessive local pressure on a single support point, and reducing the possibility of structural deformation.
[0010] Preferably, as an improvement, the ends of the diagonal supports and horizontal supports are both welded and fixed to the connecting plate.
[0011] The beneficial effects are as follows: The steel pipe columns are fixedly connected to the diagonal bracing beams and horizontal supports through the connecting plate, enhancing the connection strength between components. The ends of the diagonal supports and horizontal supports are welded and fixed to the connecting plate, ensuring the rigid connection between components, effectively avoiding displacement or deformation caused by connection loosening when the support is stressed, thereby improving the strength and stability of the overall structure. Welding and fixing can enhance the torsional resistance of the support and prevent the support structure from tilting or deforming.
[0012] Preferably, as an improvement, a concrete base is further provided at the bottom of the support part. A bottom steel plate is welded and fixed at the bottom of the steel pipe column, and the bottom steel plate can be threadedly fixed to the concrete base.
[0013] The beneficial effects are as follows: Through the above setting, the concrete base provides a stable foundation for the support, capable of effectively bearing the weight of the support and the box girder, preventing settlement or tilt caused by uneven ground or uneven stress during hoisting and docking. The bottom steel plate is threadedly fixed to the concrete base, ensuring that the bottom of the steel pipe column is firmly fixed on the base, avoiding the movement of the support part during the support process. For some construction sites, it can effectively resist the lateral force and wind load during the hoisting of the box girder and enhance the support capacity of the support.
[0014] Preferably, as an improvement, the height adjustment part includes two jacks. The two jacks are placed on the support plate and respectively support the two ends of the bottom plate, and a support steel is also placed between the two jacks.
[0015] The beneficial effects are as follows: The jacks respectively support the two ends of the support bottom plate, capable of adjusting the heights of the two ends of the support beam, enabling fine leveling of the two ends of the box girder during installation, ensuring the installation accuracy for the welding of the box girder joints, and ensuring the connection accuracy. The support steel can support the support beam. When the height of the box girder needs to be adjusted, the jacks are used for lifting and lowering adjustment and docking, which can extend the service life of the equipment.
[0016] Preferably, as an improvement, a limiting slide rail is provided on the bottom plate, the support beam is slidably connected to the bottom plate through the limiting slide rail, a connecting block is integrally formed on the support beam, and a telescopic cylinder hinged to one end of the connecting block is provided on the bottom plate.
[0017] The beneficial effects are as follows: The limiting slide rail ensures that the support beam can only move in a set direction when sliding on the bottom plate. The slide rail provides linear guidance, ensuring an accurate sliding direction and making the adjustment smoother and more controllable, facilitating the precise adjustment of the horizontal position of the end of the box girder.
[0018] Preferably, as an improvement, a plurality of strip blocks are arranged in an array on the support beam, and the length direction of the strip blocks is perpendicular to the cross-sectional direction of the box girder.
[0019] The beneficial effects are as follows: The strip blocks are perpendicular to the cross-sectional direction of the box girder. During the horizontal sliding of the support beam, it can prevent the end of the box girder from sliding on the support beam, ensuring the stability of the end of the box girder during the movement process, improving the construction safety, and realizing reliable support for the box girder without adding additional fixtures or fixing devices, avoiding the cumbersome use of additional fixing equipment.
[0020] Preferably, as an improvement, the support steel is an I-beam.
[0021] Preferably, as an improvement, a plurality of longitudinal holes are also opened on the support steel, and a number of steel pipes are welded to the bottom of the bottom plate, and the steel pipes are respectively inserted into the corresponding longitudinal holes and are slidably connected to the corresponding longitudinal holes. Description of the Drawings
[0022] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;
[0023] Figure 2 is a schematic structural diagram of the adjustment unit of Embodiment 1 of the present invention. Detailed Description of the Invention
[0024] The following is a further detailed description through specific embodiments:
[0025] The reference numerals in the accompanying drawings of the specification include: support plate 1, support beam 2, bottom plate 3, steel pipe column 4, inclined support beam 5, connecting plate 6, horizontal support 7, concrete base 8, bottom cushion steel plate 9, jack 10, connecting block 11, telescopic cylinder 12, support steel 13, strip block 14, box girder 15.
[0026] Embodiment
[0027] The embodiment is basically as Figure 1 - Figure 2 shown, as Figure 1The shown temporary support structure for ramp box girder includes a support part, a support plate 1 and an adjustment unit. The support plate 1 is fixedly arranged on the support part, and an adjustment unit is provided on each side of the support plate 1. The adjustment unit includes a support beam 2, a bottom plate 3 and a height adjustment part for adjusting the height of the bottom plate 3. The support beam 2 is placed on the bottom plate 3 and is slidably connected to the bottom plate 3. The height adjustment part includes two jacks 10. In this embodiment, the number of jacks 10 is two. The two jacks 10 are placed on the support plate 1 and respectively support the two ends of the bottom plate 3. The jacks 10 respectively support the two ends of the support bottom plate 3, which can adjust the heights of the two ends of the support beam 2, so as to finely level the two ends of the box girder 15 during the installation process, ensure the installation accuracy and facilitate the welding at the connection of the box girder 15. A support steel 13 is also placed between the two jacks 10. In this embodiment, the support steel 13 is an I-beam. The I-beam has strong support ability and light self-weight. The support steel 13 can support the support beam 2. When it is necessary to adjust the height of the box girder 15, the jacks 10 are used for lifting and lowering adjustment and docking, which can improve the service life of the equipment. A limit slide rail is provided on the bottom plate 3. The support beam 2 is slidably connected to the bottom plate 3 through the limit slide rail. A connection block 11 is integrally formed on the support beam 2, and a telescopic cylinder 12 hinged to one end of the connection block 11 is provided on the bottom plate 3. The limit slide rail ensures that the support beam 2 can only move in a set direction when sliding on the bottom plate 3. The slide rail provides linear guidance, ensures the accurate sliding direction and makes the adjustment more stable and controllable, which is convenient for accurately adjusting the horizontal position of the end of the box girder 15. In this embodiment, the length of the bottom plate 3 is greater than the length of the support beam 2, which can help support the support beam 2 after it slides. A plurality of strip blocks 14 are arranged in an array on the support beam 2. The length direction of the strip blocks 14 is perpendicular to the cross-sectional direction of the box girder 15. The strip blocks 14 are perpendicular to the cross-sectional direction of the box girder 15. During the horizontal sliding of the support beam 2, it can prevent the end of the box girder 15 from sliding on the support beam 2, ensure the stability of the end of the box girder 15 during the movement process, and improve the construction safety.
[0028] The support part includes multiple steel pipe columns 4, diagonal bracing beams 5 and horizontal supports 7. The steel pipe columns 4 are connected by multiple horizontal supports 7 and diagonal bracing beams 5. Connecting plates 6 are fixed at the joints of the steel pipe columns 4 with the diagonal bracing beams 5 and the horizontal supports 7. The ends of the diagonal bracings and the horizontal supports 7 are welded and fixed to the connecting plates 6. The steel pipe columns 4 form a support through connection with the horizontal supports 7. By setting the diagonal bracing beams 5, a triangular support structure is formed, improving the stability of the overall structure, capable of bearing the weight and lateral force during the hoisting of the box girder 15, enhancing the bearing capacity of the support, and being able to evenly disperse the vertical load from the box girder 15 to multiple columns, avoiding excessive local pressure on a single support point. The ends of the diagonal bracings and the horizontal supports 7 are fixed to the connecting plates 6 by welding, ensuring the rigid connection between components and effectively avoiding displacement or deformation caused by connection loosening when the support is stressed. A concrete pedestal 8 is also provided at the bottom of the support part. A bottom plate 9 is welded and fixed at the bottom of the steel pipe column 4. The bottom plate 9 can be threadedly fixed to the concrete pedestal 8. The concrete pedestal 8 provides a stable foundation for the support, can effectively bear the weight of the support and the box girder 15, and prevent settlement or inclination caused by uneven ground or uneven stress during hoisting and docking. The bottom plate 9 is threadedly fixed to the concrete pedestal 8 to ensure that the bottom of the steel pipe column 4 is firmly fixed on the pedestal.
[0029] The specific implementation process is as follows:
[0030] When the temporary support structure in this technical solution is in use, it is respectively placed on both sides of the ramp bridge pier. One end of a box girder 15 is placed on an adjustment unit. After the end of another box girder 15 docked with this box girder 15 is placed on another adjustment unit on the support plate 1, the height of the support beam 2 is adjusted through the height adjustment part to precisely control the vertical position of the end of the box girder 15 and ensure the alignment of the two ends of the box girder 15 in the height direction. When the alignment in the height direction is completed, the ends of the two box girders 15 are aligned by sliding the support beam 2. The support beam 2 is placed on the bottom plate 3 and is slidably connected to the bottom plate 3, enabling the box girder 15 to freely slide in the horizontal direction. In this way, after the height adjustment is completed, the alignment of the box girder 15 in the horizontal position can be achieved by sliding, ensuring the precise docking of the ends of the box girder 15 and simplifying the complex processes of manual measurement and position adjustment. The height and sliding adjustment of the support beam 2 in this technical solution enable the support structure to adapt to box girders 15 with different heights and spans, having strong versatility. Whether it is a ramp bridge with a small radius or a large span, it can adapt to various construction environments.
[0031] Embodiment 2
[0032] The difference between Example 2 and Example 1 is that a plurality of longitudinal holes are formed in the support steel 13, and a number of steel pipes are welded to the bottom of the bottom plate 3, and the plurality of steel pipes are inserted into the corresponding longitudinal holes and are slidably connected to the corresponding longitudinal holes. Through the above arrangement, when the telescopic cylinder 12 pushes the support beam 2 to slide along the limit slide rail, in order to prevent the bottom plate 3 from sliding left and right in the reverse direction, after the steel pipes are inserted into the longitudinal holes, the bottom plate 3 can be horizontally limited to prevent deviation.
[0033] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.
Claims
1. Temporary support structure for ramp box girder, characterized in that: It includes a support part, a support plate and an adjustment unit. The support plate is fixedly arranged on the support part. An adjustment unit is provided on each side of the support plate. The adjustment unit includes a support beam, a bottom plate and a height adjustment part for adjusting the height of the bottom plate. The support beam is placed on the bottom plate and is slidably connected to the bottom plate.
2. The temporary support structure for ramp box girders according to claim 1, wherein: The support part includes a plurality of steel pipe columns, diagonal bracing beams and horizontal supports. The steel pipe columns are connected by a plurality of horizontal supports and diagonal bracing beams. Connecting plates are fixed at the connection points of the steel pipe columns with the diagonal bracing beams and the horizontal supports.
3. The temporary support structure for ramp box girders according to claim 2, wherein: The ends of the diagonal bracing and the horizontal supports are fixedly welded to the connecting plate.
4. The temporary support structure for ramp box girder according to claim 3, wherein: A concrete base is further provided at the bottom of the support part. A bottom steel plate is welded to the bottom of the steel pipe column, and the bottom steel plate can be threadedly and fixedly connected to the concrete base.
5. The temporary support structure for ramp box girders according to claim 4, characterized in that: A limiting slide rail is provided on the bottom plate. The support beam is slidably connected to the bottom plate through the limiting slide rail. A connecting block is integrally formed on the support beam, and a telescopic cylinder hinged to one end of the connecting block is provided on the bottom plate.
6. The temporary support structure for the ramp box girder according to claim 5, characterized in that: A plurality of strip blocks are arranged in an array on the support beam, and the length direction of the strip blocks is perpendicular to the cross-section direction of the box girder.
7. The temporary support structure for ramp box girder according to claim 6, characterized in that: The support steel is an I-beam.
8. The temporary support structure for the ramp box girder according to claim 7, wherein: A plurality of longitudinal holes are also formed in the support steel. A number of steel pipes are welded to the bottom of the bottom plate, and the steel pipes are respectively inserted into the corresponding longitudinal holes and are slidably connected to the corresponding longitudinal holes.