Steel box girder leveling-free construction system
Through the steel box girder leveling-free construction system, using local jacking devices and supporting structures, the time-consuming and labor-intensive problems of traditional construction are solved, and efficient and low-cost bridge construction is achieved.
Patent Information
- Application Number
- CN202422206081.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-09-09
Smart Images
Figure CN223373591U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of bridge construction, in particular to the technical field of a steel box girder leveling-free construction system. Background Art
[0002] In bridge construction, jacking construction technology is widely used for the construction of bridges of uniform width. However, traditional leveling structures have significant shortcomings during jacking construction, especially in installation and removal. Traditional leveling structures require extensive welding to the steel box girder, which then needs to be cut and removed after jacking into place. This process is not only time-consuming and labor-intensive, but also increases construction costs and complexity, seriously affecting construction efficiency.
[0003] Therefore, there is an urgent need for a more flexible and efficient leveling system to simplify the construction process and improve construction efficiency. Utility Model Content
[0004] Based on this, the utility model proposes a leveling-free construction system for steel box girders, aiming to achieve direct and flexible construction using the jacking method. To achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A steel box girder leveling-free construction system includes a temporary pier disposed below the steel box girder flange plate, a transverse bridge-oriented load-bearing beam, a longitudinal bridge-oriented load-bearing beam, and a local jacking device sequentially disposed upward between the top of the temporary pier and the bottom of the steel box girder flange plate;
[0006] It also includes a supporting structure which is connected to the bottom of the steel box girder flange plate and is pushed by a local pushing device.
[0007] Compared to existing technologies, this solution utilizes the consistent height below the steel box girder flange to provide localized jacking and support, eliminating the need for leveling the beam bottom using a leveling structure. Consequently, the need for a steel box girder leveling structure is eliminated, enabling direct and flexible jacking construction, resulting in convenient and cost-effective construction.
[0008] In some embodiments, it also includes a pad disposed below the steel box girder flange plate and between the longitudinal bridge-direction load-bearing beam.
[0009] In some embodiments, the spacer is disposed between the support structure and the longitudinal bridge-direction load-bearing beam.
[0010] In a preferred embodiment, the local pushing device is a walking jack.
[0011] In some embodiments, the walking jack includes at least one vertical jack and a horizontal jack, and a lower support for stabilizing the vertical jack and the horizontal jack.
[0012] In a preferred embodiment, there are two vertical jacks.
[0013] In some embodiments, the walking jack further includes an upper support disposed at the top and abutting against the support structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is an overall schematic diagram of a steel box girder leveling-free construction system in this case;
[0015] Figure 2 yes Figure 1 Partial schematic diagram at point A in the middle;
[0016] Figure 3 This is a schematic diagram of the walking jack and local support structure in this case. DETAILED DESCRIPTION
[0017] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:
[0018] It should be noted that the words "left", "right", "up" and "down" used in the description of this case refer to the directions in the accompanying drawings, and the words "bottom" and "top", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.
[0019] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.
[0020] Please refer to Figure 1 and Figure 2 In this case, a leveling-free construction system for a steel box girder includes a temporary pier 2 arranged below the flange plate 11 of the steel box girder 1. In conventional variable-height bridge construction, the temporary pier 2 is set in the middle of the steel box girder 1. At this time, due to the height change, a leveling structure needs to be added. However, this case is different from the existing technology. It takes advantage of the consistent height below the flange plate 11 of the steel box girder 1 to set up a temporary pier 2 for local jacking and support, avoiding leveling the bottom of the beam through the leveling structure. This solution is only applicable to bridges of equal width, and is not applicable to bridges of variable width. That is, this case mainly uses the leveling-free construction system based on the premise that the height below the flange plate 11 of the steel box girder 1 of the equal-width bridge is consistent. The temporary pier 2 is set on the left and right sides of the steel box girder 1.
[0021] Between the top of the temporary pier 2 and the bottom of the flange plate 11 of the steel box girder 1, a transverse bridge-oriented load-bearing beam 3, a longitudinal bridge-oriented load-bearing beam 4, and a localized jacking device 5 are arranged in this order. Because the bottom of the flange plate 11 is inclined, a support structure 12 is installed below the flange plate 11, which is pushed by the localized jacking device 5.
[0022] Therefore, there is no need to level the steel box girder 1 , and the supporting structure 12 can be directly pushed by the local pushing device 5 , thereby enabling the steel box girder 1 to be directly and flexibly constructed using the pushing method, which is convenient and cost-effective.
[0023] During actual construction, in order to ensure that the steel box girder 1 can move smoothly and safely during the jacking process and can be accurately positioned and fixed after being jacked into place, a pad 6 is also included, which is arranged below the flange plate 11 of the steel box girder 1 and between the longitudinal bridge-direction load-bearing beam 4. Specifically, like the local jacking device 5 described above, the pad 6 is arranged between the support structure 12 and the longitudinal bridge-direction load-bearing beam 4, that is, the pad 6 and the local jacking device 5 are both arranged along the jacking direction.
[0024] The local pushing device 5 is described in detail below. Figure 3 Preferably, the local pushing device 5 uses a walking jack. Specifically, the walking jack includes at least one vertical jack 51 and a horizontal jack 52. There are preferably two vertical jacks 51, which can be located on both sides of the pushing direction of the support structure 12 when working.
[0025] Specifically, it also includes a lower support 53 for stabilizing the vertical jack 51 and the horizontal jack 52. An upper support 54 is also provided on the top thereof to abut against the support structure 12.
[0026] As mentioned above, this case protects a steel box girder leveling-free construction system, and all technical solutions that are the same or similar to this case should be deemed to fall within the scope of protection of this case.
Claims
1. A steel box girder leveling-free construction system, characterized in that: It comprises a temporary pier (2) arranged below the flange plate (11) of the steel box girder (1), a transverse bridge-direction load-bearing beam (3), a longitudinal bridge-direction load-bearing beam (4), and a local jacking device (5) arranged upward in sequence between the top of the temporary pier (2) and the below the flange plate (11) of the steel box girder (1); It also includes a supporting structure (12) connected below the flange plate (11) of the steel box beam (1) and pushed by a local pushing device (5).
2. A leveling-free construction system for steel box beams according to claim 1, characterized in that: It also includes a spacer (6) arranged below the flange plate (11) of the steel box beam (1) and between the longitudinal bridge-direction load-bearing beam (4).
3. A leveling-free construction system for steel box beams as claimed in claim 2, characterized in that: The cushion block (6) is arranged between the supporting structure (12) and the longitudinal bridge-direction load-bearing beam (4).
4. A leveling-free construction system for steel box beams according to claim 1, characterized in that: The local pushing device (5) is a walking jack.
5. A leveling-free construction system for steel box beams as claimed in claim 4, characterized in that: The walking jack includes at least one vertical jack (51) and a horizontal jack (52), and a lower support (53) for stabilizing the vertical jack (51) and the horizontal jack (52).
6. A leveling-free construction system for steel box beams as claimed in claim 5, characterized in that: There are two vertical jacks (51).
7. A leveling-free construction system for steel box beams as claimed in claim 5, characterized in that: The walking jack further includes an upper support (54) disposed at the top and abutting against the support structure (12).