Steel box girder suspended formwork supporting structure
By setting up a steel box girder hanging mold support structure with brackets and screws between the steel box girders, the problems of traffic impact and slow construction progress during bridge construction are solved, convenient installation and efficient disassembly are achieved, and the quality of the bridge deck is ensured.
Patent Information
- Application Number
- CN202422588550.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In the construction of municipal elevated bridges, the existing technology of steel-concrete composite beam bridge deck casting methods have problems such as slow construction progress, large traffic impact, and rust and cracking of lifting parts, especially in busy urban areas that affect traffic and citizens' travel.
The steel box girder lifting mold support structure is adopted. By setting up brackets and screws between the side walls of adjacent steel box girders, combined with the formwork structure, stable support and convenient disassembly are achieved to avoid the lifting parts affecting traffic. PVC partition pipes are used to prevent the fixtures from being covered by casting.
It achieves that the traffic under the bridge is not affected during the construction process, simplifies the installation and disassembly of lifting parts, improves construction efficiency, reduces construction complexity and cost, and ensures the quality of the bridge deck.
Smart Images
Figure CN223240568U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, in particular to a steel box girder hanging formwork supporting structure. Background Art
[0002] During the construction of municipal elevated bridges, scaffolding is required to support the formwork during the pouring of steel-concrete composite beam decks. A common practice is to erect a full-length scaffold from the ground, but this approach also has several significant drawbacks. First, the erection of a full-length scaffold is time-consuming and involves multiple steps, potentially delaying construction and increasing costs. Second, the scaffolding occupies the roadway beneath the bridge, significantly impacting traffic flow, especially in busy urban areas, potentially leading to congestion and accidents. Furthermore, during the scaffolding installation period, the roadway beneath the bridge is often closed to traffic, impacting public travel efficiency and negatively impacting the city's economic development. Another alternative is to hoist the scaffolding, but this leaves the scaffolding components within the cast bridge deck, requiring secondary finishing, such as grinding exposed components, which increases workload. Furthermore, scaffolding components left within the cast bridge deck can rust and create gaps, potentially causing cracks during later use. Summary of the Invention
[0003] The problem to be solved by the utility model is to provide a steel box girder hanging formwork supporting structure which will not affect the traffic on the ground route under the bridge during construction and is easy to install so that the hanging parts can be removed after pouring.
[0004] The technical solution adopted by the present invention to solve the above-mentioned problems is as follows: a steel box girder hanging formwork support structure includes a bracket arranged between two adjacent steel box girder side walls and spaced apart along the longitudinal direction, the length of the bracket matches the spacing between adjacent steel box girders, screws are provided on both sides of the bracket, the upper end of the screw extends to the top of the bracket and passes through the reserved hole of the top plate, wherein the outer side of the part of the screw passing through the reserved hole of the top plate is sequentially sleeved with a first fixing screw, a pad, and a partition tube from top to bottom, the height of the partition tube is greater than the thickness of the bridge deck casting, so as to avoid the first fixing screw and the pad being covered by the cast during casting; the first fixing screw is screwed to move the first fixing screw toward the pad to drive the lower end face of the pad to press the partition tube and the upper end face of the top plate, while fixing the position of the screw; the upper end face of the bracket is provided with a template structure, and the template structure forms a continuous casting bottom surface between the two top plates.
[0005] Compared with the prior art, the present invention adopts the method of setting a bracket to achieve effective support between the side walls of two adjacent steel box girders. The length of the bracket matches the spacing between adjacent steel box girders, ensuring the stability of the structure, so that the ground traffic under the bridge is not affected during the construction process, ensuring the smooth flow of the road. At the same time, the cooperation between the screw and the fixing assembly ensures convenient installation and disassembly during the construction process. The upper end of the screw extends above the bracket and passes through the reserved hole of the top plate, making the fixing process simple and efficient. When the first fixing screw is screwed, the lower end face of the pad can be driven to press the partition tube and the top plate together, thereby fixing the position of the screw. This design makes it easy to remove the lifting parts after pouring, reducing the complexity of construction and improving construction efficiency. In addition, the height of the partition tube used in the structure is greater than the thickness of the bridge deck casting, avoiding the risk of the first fixing screw and the pad being covered in the casting during construction.
[0006] The utility model provides a steel box girder hanging formwork support structure, the formwork structure includes a square timber frame and a panel laid on the square timber frame, the square timber frame includes two pressing rods located below the two top plates and placed on the upper end face of the bracket along the longitudinal direction, and a placement rod placed on the bracket along the longitudinal interval between the pressing rods, the two ends of the placement rods are respectively fixed on the side faces of the pressing rods, and support rods are arranged at the upper end faces of the placement rods along the transverse interval, and the upper end faces of the support rods and the upper end faces of the placement rods have a height difference, the transverse ends of the panel are respectively located at the upper end faces of the two pressing rods, and the middle part is laid on the upper end faces of the support rods, forming a convex shape in the middle part of the cross section, which not only enhances the bearing capacity of the panel, but also can effectively disperse the pressure of the casting, and ensure the smooth progress of the casting process.
[0007] The utility model provides a steel box girder hanging formwork support structure, wherein the lower end of the screw rod is sleeved with a second fixing screw, and the second fixing screw is screwed to drive the bracket to move upward, and the support plate drives the two pressing rods and the lateral ends of the panel to be pressed toward the lower end surfaces of the two top plates. Through a simple screwing operation, the bracket can be quickly adjusted so that the pressing rods and the panel can be tightly fitted on the top plate to form a continuous casting bottom surface.
[0008] The utility model provides a steel box girder hanging formwork support structure, wherein the bracket is formed by cutting 10# channel steel according to the spacing size of adjacent steel box girders, and the processing cost is lowered by adopting common materials.
[0009] The utility model provides a steel box beam hanging formwork supporting structure, wherein the partition pipe is a PVC pipe. The partition pipe made of this material is convenient to destroy or take out after pouring.
[0010] The utility model provides a steel box beam hanging formwork supporting structure, wherein the diameter of the screw rod is greater than φ12, thereby providing a guarantee for safe construction. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural diagram of the utility model;
[0012] Figure 2 for Figure 1 Enlarged view of the box.
[0013] Diagram: 1. Steel box girder; 2. Top plate; 3. Bracket; 4. Screw; 5. First fixing screw; 6. Backing plate; 7. Partition tube; 8. Formwork structure; 8.1. Timber frame; 8.1.1. Pressing rod; 8.1.2. Placement rod; 8.1.3. Support rod; 8.2. Panel; 9. Second fixing screw; DETAILED DESCRIPTION
[0014] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components set forth in the following description or illustrated in the following figures. The present invention is capable of other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used herein are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and variations thereof herein is intended to cover the items and their equivalents set forth below, as well as additional items. Unless otherwise specified or limited, the terms "mount", "connect", "support" and "couple" and variations thereof are used broadly and cover direct mounting and indirect mounting, connection, support and coupling. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings.
[0015] Furthermore, on the first hand, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second hand, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.
[0016] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are provided for illustrative purposes only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.
[0017] The embodiments of the present invention will be further described below with reference to the accompanying drawings.
[0018] See also Figure 1 、 Figure 2 This steel box girder formwork support structure specifically consists of a steel box girder 1, a top plate 2, and a bracket 3 arranged between two adjacent steel box girders 1. The bracket 3 is made of 10# channel steel, and the cutting length accurately matches the spacing between adjacent beams. Each bracket 3 is provided with a screw 4 with a diameter greater than φ12 on both sides. The upper end of the screw 4 passes through the reserved hole in the top plate 2, and the outer side is sequentially covered with a first fixing screw 5, a pad 6, and a PVC material partition tube 7. The height of the partition tube 7 is greater than the thickness of the bridge deck casting, which can effectively prevent the concrete from covering the fixing screws and pad 6 during pouring.
[0019] By screwing the first fixing screw 5, the partition tube 7 can be tightly pressed against the top plate 2, thereby fixing the position of the screw rod 4. A formwork structure 8 is arranged above the bracket 3, including a square timber frame 8.1 and a panel 8.2 laid thereon. The square timber frame 8.1 is composed of two pressing rods 8.1.1 and a number of placement rods 8.1.2. The support rods 8.1.3 are arranged horizontally to form a convex shape in the middle of the panel 8.2, reducing the weight of the cast bridge deck and maintaining its bearing capacity. Screwing the second fixing screw 9 at the lower end can drive the bracket 3 to move upward, driving the pressing rods 8.1.1 and the lateral ends of the panel 8.2 to press against the top plate 2, forming a continuous and solid casting bottom surface, ensuring the smooth progress of subsequent concrete pouring.
[0020] The installation method of this steel box girder hanging formwork support structure is as follows: the bracket 3 is placed longitudinally between the side walls of two adjacent steel box girders 1, and 10# channel steel is cut into the required length to ensure that the spacing with the steel box girder 1 is matched and fixed. Next, screws 4 with a diameter greater than φ12 are installed on both sides of the bracket 3, so that the upper end passes through the reserved hole of the top plate 2, and the first fixing screw 5, pad 6 and partition tube 7 are installed in sequence, ensuring that the height of the partition tube 7 is greater than the thickness of the bridge deck casting to prevent the first fixing screw 5 and pad 6 from being covered by concrete during casting. Tighten the first fixing screw 5 to move it toward the pad 6, fix the position of the screw 4, and ensure stability. Subsequently, a square timber frame 8.1 is installed at the upper end of the bracket 3, including a pressing rod 8.1.1 and a placement rod 8.1.2, and a support rod 8.1.3 is set above the placement rod 8.1.2 to ensure that the panel 8.2 forms a convex shape in the middle. Finally, a second fixing screw 9 is fitted around the lower end of the screw rod 4 and tightened to drive the bracket 3 upward, ensuring a tight fit between the bracket and the panel 8.2. After a thorough inspection of the structure's stability, the concrete is prepared and poured. After pouring, the first fixing screw 5 is loosened, the backing plate 6 is removed, and the bolts, bracket 3, and formwork structure 8 are removed from below. The partition tube 7 is then removed, or the partition plate is broken, and the holes formed by the partition plate are filled with concrete to complete the pour.
[0021] The above description is merely a description of the preferred embodiment of the present invention and should not be construed as limiting the claims. The present invention is not limited to the above embodiment, and variations in its specific structure are permitted. All variations within the scope of the independent claims of the present invention are within the scope of protection of the present invention.
Claims
1. A steel box girder hanging formwork support structure, characterized in that: The invention comprises a steel box beam (1), a top plate (2), and a bracket (3) arranged between the side walls of two adjacent steel box beams (1) and spaced apart in the longitudinal direction. The length of the bracket (3) matches the spacing between the adjacent steel box beams (1). Screws (4) are provided on both sides of the bracket (3). The upper ends of the screws (4) extend above the bracket (3) and pass through the reserved holes of the top plate (2). The outer side of the portion of the screw (4) passing through the reserved holes of the top plate (2) is sequentially sleeved with a first fixing screw (5), a pad (6), a partition (7), and a plurality of other fixing screws (8). The partition tube (7) is provided with a height greater than the thickness of the bridge deck casting to prevent the first fixing screw (5) and the pad (6) from being covered by the casting during casting; the first fixing screw (5) is screwed to move the first fixing screw (5) toward the pad (6) to drive the lower end surface of the pad (6) to press the partition tube (7) and the upper end surface of the top plate (2), while fixing the position of the screw rod (4); the upper end surface of the bracket (3) is provided with a template structure (8), and the template structure (8) forms a continuous casting bottom surface between the two top plates (2).
2. The steel box girder hanging formwork support structure according to claim 1, characterized in that: The template structure (8) includes a square timber frame (8.1) and a panel (8.2) laid on the square timber frame (8.1). The square timber frame (8.1) includes two pressing rods (8.1.1) located below two top plates (2) and placed longitudinally on the upper end surface of the bracket (3). A placement rod (8.1.2) is placed longitudinally on the bracket (3) between the pressing rods (8.1.1). Both ends of the placement rod (8.1.2) are fixed to the pressing rods. On the side of the rod (8.1.1), support rods (8.1.3) are arranged at intervals along the horizontal direction at the upper end surface of the placement rod (8.1.2), and the upper end surface of the support rod (8.1.3) has a height difference with the upper end surface of the placement rod (8.1.2). The lateral ends of the panel (8.2) are respectively located at the upper end surfaces of the two pressing rods (8.1.1), and the middle part is laid on the upper end surface of the support rod (8.1.3), forming a convex shape in the middle of the cross section.
3. The steel box girder hanging formwork support structure according to claim 2, characterized in that: The lower end of the screw rod (4) is sleeved with a second fixing screw (9), and the second fixing screw (9) is screwed to drive the bracket (3) to move upward, and the bracket drives the two pressing rods (8.1.1) and the lateral ends of the panel (8.2) to press against the lower end surfaces of the two top plates (2).
4. The steel box girder hanging formwork support structure according to claim 1, characterized in that: The bracket (3) is formed by cutting 10# channel steel according to the spacing size of adjacent steel box beams (1).
5. The steel box girder hanging formwork support structure according to claim 1, characterized in that: The partition pipe (7) is a PVC pipe.
6. The steel box girder hanging formwork support structure according to claim 1, characterized in that: The diameter of the screw (4) is greater than φ12.