Assembled hanging formwork for bridge wet joint
Through the assembleable lifting mold structure, threaded connections and wire ropes are used to achieve safe and convenient disassembly and assembly of plywood and prefabricated beams, solving the safety hazards of traditional bridge wet joint lifting molds at high altitudes, and improving construction safety and efficiency.
Patent Information
- Application Number
- CN202422301449.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-09-20
AI Technical Summary
When disassembling and assembling traditional bridge wet joint lifting molds, high-altitude operations are required under the lifting molds, which is difficult to construct and poses safety hazards.
The assembleable lifting mold structure is adopted, including the base plate, tie rod, bottom wooden block and plywood. Through threaded connection and the matching of the wire rope, the plywood and prefabricated beams are bonded and separated, and the operation is avoided at high altitudes.
It reduces construction difficulty, avoids safety hazards, and improves construction safety and efficiency.
Smart Images
Figure CN223202204U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, in particular to an assembleable hanging formwork for wet joints of bridges. Background Art
[0002] Wet joints refer to joints where prestressed concrete beams are prefabricated in blocks, cantilevered and assembled into long-span continuous beams, and the beams are connected into a whole using cast-in-place concrete. Wet joints are important connection points in concrete box girder bridge structures, and their connection method directly affects the structural stability and bearing capacity of the entire bridge. Traditional wet joint hanging formwork mainly involves setting a steel pipe shoulder beam between two precast beams, and using tension bolts as hanging rods to lift the bottom formwork. After the bottom formwork and other molds are installed, concrete is poured between the bottom formwork and the two precast beams. However, the bridge is very high, and when disassembling and assembling the hanging formwork, it is necessary to perform high-altitude work below the hanging formwork, which makes construction difficult and poses a safety hazard. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model provides an assembleable hanging formwork for wet joints of bridges, which solves the problem that high-altitude work needs to be performed below the hanging formwork when disassembling and assembling the hanging formwork, which makes construction difficult and poses safety hazards.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] An assemblable hanging formwork for bridge wet joints, comprising: a bottom plate, tie rods, bottom wood blocks and plywood;
[0006] The bottom plate is located directly below the wet joint, and connecting blocks are provided on both sides of the bottom plate and on both sides of the wet joint. The lower end of the pull rod is connected to the connecting block, and the middle part of the pull rod is provided with a threaded section, a nut is threadedly connected to the threaded section, and the upper end of the pull rod is connected to a steel wire rope;
[0007] There are several bottom wooden blocks, each of which is in a long strip shape and is connected to the bottom of the plywood. The bottom wooden blocks are arranged on the bottom plate, and a limiting plate for limiting the sliding of the bottom wooden blocks is provided on the bottom plate.
[0008] Preferably, a slide groove is provided on the bottom plate, and an opening is provided on one side of the slide groove. The bottom wooden block can slide on the slide groove along the width direction of the bridge. An elastic groove is provided at the bottom of the slide groove. The limiting plate is elastically arranged in the elastic groove along the vertical direction. A notch groove is provided at the bottom of the bottom wooden block. When the bottom of the bottom wooden block is completely located in the slide groove, the upper part of the limiting plate can extend into the notch groove.
[0009] Preferably, the top of the limiting plate is an arc surface with the middle portion inclined toward the edge.
[0010] Preferably, the limiting plate is slidably connected in the elastic groove, and a spring is connected between the bottom of the limiting plate and the elastic groove.
[0011] Preferably, two elastic grooves are provided.
[0012] Preferably, a connecting ring is fixedly connected to the connecting block, a fixing ring is fixedly connected to the bottom of the pull rod, and the connecting ring and the fixing ring are sleeved.
[0013] Preferably, a pull ring is provided at the end of the bottom wooden block.
[0014] The utility model has the following beneficial effects:
[0015] By cooperating with the threaded section on the tie rod and the nut, the plywood can be fitted to the bottom of the prefabricated beam on both sides of the wet joint, and concrete pouring can be carried out. During disassembly, the connection between the tie rod and the nut is released, the tie rod moves downward, and then the bottom plate is slowly lowered by the wire rope, which facilitates the separation of the plywood from the bottom plate under the bridge, avoids high-altitude operations, reduces construction difficulty, and avoids safety hazards.
[0016] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This is a schematic diagram of another usage state of the utility model;
[0019] Figure 3 This is a schematic diagram of the pull rod structure of the utility model;
[0020] Figure 4 This is a partial cross-sectional schematic diagram of the plywood and base plate connection structure of the utility model;
[0021] Figure 5 for Figure 4 A is an enlarged schematic cross-sectional view.
[0022] In the above drawings: 1. Base plate; 11. Connecting block; 12. Slide groove; 121. Elastic groove; 13. Connecting ring; 2. Pull rod; 21. Threaded section; 22. Nut; 23. Fixing ring; 3. Bottom wooden block; 31. Notched groove; 32. Pull ring; 4. Plywood; 5. Wire rope; 6. Limiting plate; 7. Spring. DETAILED DESCRIPTION
[0023] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the technical solutions in the present invention are further described below with reference to the accompanying drawings and embodiments.
[0024] See also Figures 1 to 5 As shown, an assemblable hanging formwork for wet joints of bridges includes: a base plate 1, a tie rod 2, a bottom wooden block 3 and a plywood 4; the base plate 1 is located directly below the wet joint, and connecting blocks 11 are provided on both sides of the base plate 1 and on both sides of the wet joint, the lower end of the tie rod 2 is connected to the connecting block 11, and a threaded section 21 is provided in the middle of the tie rod 2, a nut 22 is threadedly connected to the threaded section 21, and a steel wire rope 5 is connected to the upper end of the tie rod 2; there are a plurality of bottom wooden blocks 3, and the bottom wooden blocks 3 are long strips, and a plurality of bottom wooden blocks 3 are connected together to the bottom of the plywood 4, and the bottom wooden blocks 3 are provided on the base plate 1, and a limiting plate 6 for limiting the sliding of the bottom wooden blocks 3 is provided on the base plate 1.
[0025] When the prefabricated beam is manufactured, a perforation is reserved for the rod 2 to pass through. When in use, the bottom wood block 3 is placed on the bottom plate 1. The limiting plate 6 can limit the bottom wood block 3 on the bottom plate 1. The upper end of the rod 2 passes through the perforation upward. When the threaded section 21 passes through the perforation, the nut 22 and the threaded section 21 are threaded together to fix the rod 2 on the prefabricated beam, so that the plywood 4 is close to the lower surface of the two prefabricated beams; in order to make the connection reliable, a gasket is also provided under the nut 22; specifically, the width of the plywood 4 is greater than the width of the wet joint, and when in use Before the demoulding, the plywood 4 needs to be coated with a release agent to facilitate subsequent demoulding; by cooperating with the threaded section 21 on the tie rod 2 and the nut 22, the plywood 4 can be fitted with the bottom of the precast beam on both sides of the wet joint, and concrete pouring can be carried out. When disassembling, the connection between the tie rod 2 and the nut 22 is released, and the tie rod 2 moves downward to separate the plywood 4 from the poured concrete, and then the bottom plate 1 is slowly lowered by the wire rope 5, which makes it easy to separate the plywood 4 from the bottom plate 1 under the bridge, avoiding high-altitude operations, reducing construction difficulty, and avoiding safety hazards.
[0026] Further, if Figure 1 、 Figure 4 and Figure 5As shown, the bottom plate 1 is provided with a slide groove 12, and an opening is provided on one side of the slide groove 12. The bottom wooden block 3 can slide on the slide groove 12 along the width direction of the bridge. The bottom of the slide groove 12 is provided with an elastic groove 121. The limiting plate 6 is elastically arranged in the elastic groove 121 along the vertical direction. The bottom of the bottom wooden block 3 is provided with a notch groove 31. When the bottom of the bottom wooden block 3 is completely located in the slide groove 12, the upper part of the limiting plate 6 can extend into the notch groove 31. When the plywood 4 is placed, the bottom wooden block 3 extends from the opening at one end of the slide groove 12, so that the bottom of the bottom wooden block 3 is completely located in the slide groove 12. The limiting plate 6 is elastically arranged, and the elastic force causes the limiting plate 6 to extend upward, and the upper end of the limiting plate 6 to extend into the notch groove 31, which can limit the sliding of the bottom wooden block 3, prevent the plywood 4 from sliding from a high place, avoid safety hazards, and improve the reliability of the device.
[0027] Furthermore, if Figure 4 and Figure 5 As shown, the top of the limiting plate 6 is an arcuate surface with a central portion that slopes toward the edges. Under normal circumstances, the limiting plate 6 extends upward from the elastic slot 121 under the action of elastic force. When the plywood 4 is placed, the bottom wooden block 3 slides along the bottom of the slide slot 12, and the edge of the limiting plate 6 first contacts the bottom wooden block 3. The inclined arcuate surface facilitates the downward movement of the limiting plate 6 under the action of the bottom wooden block 3. The limiting plate 6 is also slidably connected within the elastic slot 121, with a spring 7 connected between the bottom of the limiting plate 6 and the elastic slot 121. As the bottom wooden block 3 slides, the limiting plate 6 is fully located within the elastic slot 121, at which point the spring 7 is compressed. Then, as the bottom wooden block 3 continues to slide, when the notched slot 31 is above the elastic slot 121, the restriction on the limiting plate 6 is released. Under the elastic force of the spring 7, the limiting plate 6 moves upward and extends into the notched slot 31, restricting the movement of the bottom wooden block 3.
[0028] Furthermore, if Figure 4 As shown, in order to improve reliability, two elastic grooves 121 are provided.
[0029] Furthermore, if Figures 1 to 3 As shown, a connecting ring 13 is fixedly connected to the connecting block 11, and a fixing ring 23 is fixedly connected to the bottom of the pull rod 2. The connecting ring 13 and the fixing ring 23 are sleeved together. The pull rod 2 and the base plate 1 are connected via the connecting ring 13 and the fixing ring 23.
[0030] Furthermore, if Figure 1 and Figure 4 As shown, in order to facilitate the removal of the plywood 4, a pull ring 32 is provided at the end of the bottom wooden block 3.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. An assembled hanging formwork for bridge wet joints, characterized in that: include: Base plate (1), tie rod (2), bottom wood block (3) and plywood (4); The bottom plate (1) is located directly below the wet joint, and connecting blocks (11) are provided on both sides of the bottom plate (1) and on both sides of the wet joint. The lower end of the pull rod (2) is connected to the connecting block (11), and the middle part of the pull rod (2) is provided with a threaded section (21), and a nut (22) is threadedly connected to the threaded section (21). The upper end of the pull rod (2) is connected to a steel wire rope (5); A plurality of bottom wooden blocks (3) are provided, each of which is in the shape of an elongated strip. The plurality of bottom wooden blocks (3) are connected together to the bottom of the plywood (4). The bottom wooden blocks (3) are provided on the bottom plate (1), and a limiting plate (6) is provided on the bottom plate (1) to limit the sliding of the bottom wooden blocks (3).
2. The assembleable hanging formwork for bridge wet joints according to claim 1, characterized in that: The bottom plate (1) is provided with a slide groove (12), one side of which is provided with an opening. The bottom wooden block (3) can slide on the slide groove (12) along the width direction of the bridge. The bottom of the slide groove (12) is provided with an elastic groove (121). The limiting plate (6) is elastically arranged in the elastic groove (121) along the vertical direction. The bottom of the bottom wooden block (3) is provided with a notch groove (31). When the bottom of the bottom wooden block (3) is completely located in the slide groove (12), the upper part of the limiting plate (6) can extend into the notch groove (31).
3. The assembleable hanging formwork for bridge wet joints according to claim 2, characterized in that: The top of the limiting plate (6) is an arc surface with the middle portion inclined toward the edge.
4. The assembleable hanging formwork for bridge wet joints according to claim 2, characterized in that: The limiting plate (6) is slidably connected in the elastic groove (121), and a spring (7) is connected between the bottom of the limiting plate (6) and the elastic groove (121).
5. The assembleable hanging formwork for bridge wet joints according to claim 2, characterized in that: Two elastic grooves (121) are provided.
6. The assembleable hanging formwork for bridge wet joints according to claim 1, characterized in that: A connecting ring (13) is fixedly connected to the connecting block (11), a fixing ring (23) is fixedly connected to the bottom of the pull rod (2), and the connecting ring (13) and the fixing ring (23) are sleeved.
7. The assembleable hanging formwork for bridge wet joints according to claim 1, characterized in that: A pull ring (32) is provided at the end of the bottom wooden block (3).