A device for fixing a large-section I-beam single-sided form
By using fixed tie rods and nuts for connection, combined with the steel frame external formwork and keel structure, the problem of low efficiency in single-sided reinforcement of large-section I-beams was solved, achieving a highly efficient beam reinforcement effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR FIRST BUILDING (GRP) CORP LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-31
AI Technical Summary
Existing technologies for single-sided reinforcement of large-section I-beams are difficult to fix efficiently in confined spaces, resulting in low beam reinforcement efficiency.
The I-beam frame is quickly fixed by using fixed tie rods and nuts, combined with the outer template of the steel frame, the main keel and the secondary keel, and welding and threaded connections. Reinforcing components are used to improve the support strength.
This improved the connection strength between the I-beam frame and the beam, as well as the construction efficiency, ensuring the rapid fixing and reinforcement of large-section I-beams.
Smart Images

Figure CN224579110U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of beam reinforcement technology, specifically to a device for fixing a single-sided formwork of a large-section I-beam. Background Technology
[0002] Beam reinforcement refers to technical means in building structures to improve the load-bearing capacity, stiffness, or durability of beams by adding materials or modifying structural forms. Its core purpose is to address structural damage to beams caused by use or environmental factors, ensuring building safety and functionality.
[0003] Existing beam reinforcement methods mostly employ a four-sided enclosed approach, where steel is wrapped around the surface of the beam. However, for single-sided reinforcement of large-section I-beams, welding is often used to fix the I-beams to the side of the beam. Due to the height of the beams, the limited working space, and the large size of the welding equipment, it is inconvenient to fix the I-beams, resulting in low beam reinforcement efficiency.
[0004] Therefore, it is necessary to invent a device for fixing a single-sided template of a large-section I-beam to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a device for fixing a single-sided formwork for a large-section I-beam, in order to solve the problem that it is inconvenient to fix the I-beam, resulting in low beam reinforcement efficiency.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for fixing a single-sided formwork of a large-section I-beam, comprising a beam body, wherein a reinforcing component is provided on the side of the beam body, the reinforcing component comprising connecting holes, an I-beam frame, a fixing tie rod, a first fixing nut, a second fixing nut, an outer formwork of the steel frame, a main keel and a secondary keel, wherein multiple sets of through holes are provided on the surface of the outer formwork of the steel frame, the main keel and the secondary keel, and multiple sets of connecting holes are longitudinally spaced according to the position of the through holes on the surface of the outer formwork of the beam body, wherein fixing tie rods are inserted into the interior of each of the multiple sets of connecting holes.
[0007] By adopting the above technical solution, the first fixing nut is welded to the side of the I-beam frame, and the fixing tie rod is tightened with the first fixing nut. After the outer formwork, main keel and secondary keel of the steel frame are installed, the second fixing nut is threaded to the right end of the fixing tie rod, thereby reinforcing the I-beam frame, facilitating the quick fixing of the I-beam frame and improving construction efficiency.
[0008] Optionally, the I-beam frame is tightly attached to the left side surface of the main beam body, and an insulation board is filled between the I-beam frame and the main beam body. The outer formwork of the steel frame is tightly attached to the right side surface of the main beam body.
[0009] Optionally, the right side surface of the steel frame outer template is provided with multiple sets of longitudinally spaced main keels, and the right side of the multiple sets of main keels is provided with four sets of vertically spaced secondary keels.
[0010] By adopting the above technical solution, the main keel and the secondary keel work together to improve the connection strength between the I-beam frame and the main beam body.
[0011] Optionally, multiple sets of first fixing nuts are longitudinally and spaced apart on the inner surface of the main beam body. The multiple sets of first fixing nuts are respectively threaded to the left end of the fixing tie rod, and the second fixing nuts are threaded to the right end of the fixing tie rod.
[0012] By adopting the above technical solution, after welding the first fixing nut to the I-beam frame, the fixing tie rod is rotated so that its left end is threadedly connected to the first fixing nut.
[0013] Optionally, the inner side of the I-beam frame is provided with multiple sets of reinforcing components, the reinforcing components including a support frame, a connecting sleeve, a sleeve hole, a support plate, a fixing sleeve, a support screw, and an abutment plate.
[0014] By adopting the above technical solutions, the reinforcement components further improve the support strength of the I-beam frame.
[0015] Optionally, four sets of connecting sleeves are fixedly connected to the inner side of the support frame. Each connecting sleeve has a socket hole inside, and the connecting sleeve is fitted onto the surface of the fixed tie rod through the socket hole.
[0016] By adopting the above technical solution, four sets of connecting sleeves are respectively fitted onto the surfaces of four sets of fixed tie rods to fix the position of the support frame.
[0017] Optionally, support plates are fixedly connected to the upper and lower ends of the front and rear surfaces of the support frame, and fixing sleeves are fixedly connected to the surfaces of the four sets of support plates.
[0018] Optionally, each of the four sets of fixing sleeves has a support screw threaded inside, and an abutment plate is fixedly connected to the outer end of each support screw.
[0019] By adopting the above technical solution, rotating the support screw pushes the abutment plate outward to one end, so that the abutment plate abuts against the inner walls of the upper and lower sides of the I-beam frame, thus supporting the interior of the I-beam and further improving the support strength of the I-beam.
[0020] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0021] 1. This utility model fixes the I-beam frame to the beam body by welding a first fixing nut to the side of the I-beam frame, tightening the fixing tie rod with the first fixing nut, and passing the fixing tie rod through the connection hole on the surface of the beam body. After the outer formwork, main keel and secondary keel of the steel frame are installed, the second fixing nut is threaded to the right end of the fixing tie rod, thereby fixing the I-beam frame to the beam body. This effectively improves the reinforcement capacity of the beam body and facilitates quick fixing of the I-beam frame, thus improving construction efficiency.
[0022] 2. This utility model fixes the reinforcing component to the inside of the I-beam, rotates the support screw, and pushes the abutment plate outward to one end, so that the abutment plate abuts against the inner walls of the upper and lower sides of the I-beam frame, thereby supporting the interior of the I-beam and further improving the support strength of the I-beam. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the main beam structure of this utility model;
[0025] Figure 3 This is a schematic diagram of the I-beam frame structure of this utility model;
[0026] Figure 4 This is a schematic diagram of the fixed tie rod structure of this utility model;
[0027] Figure 5 This is a schematic diagram of the reinforcing component structure of this utility model.
[0028] Explanation of reference numerals in the attached figures:
[0029] 1. Main beam; 11. Connecting hole; 2. I-beam frame; 21. Fixing tie rod; 22. First fixing nut; 23. Second fixing nut; 3. Reinforcing component; 31. Support frame; 32. Connecting sleeve; 33. Sleeve hole; 34. Support plate; 35. Fixing sleeve; 36. Supporting tie rod; 37. Abutment plate; 4. Steel frame outer formwork; 41. Main keel; 42. Secondary keel; 5. Insulation board. Detailed Implementation
[0030] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0031] This utility model provides, for example Figures 1 to 4The device for fixing a single-sided formwork of a large-section I-beam includes a main beam body 1. A reinforcing assembly is provided on the side of the main beam body 1. The reinforcing assembly includes connecting holes 11, an I-beam frame 2, fixing tie rods 21, a first fixing nut 22, a second fixing nut 23, an outer formwork 4, a main joist 41, and a secondary joist 42. Multiple sets of through holes are formed on the surfaces of the outer formwork 4, the main joist 41, and the secondary joist 42. Multiple sets of connecting holes 11 are longitudinally spaced on the surface of the main beam body 1 according to the positions of the through holes on the surface of the outer formwork 4. Fixing tie rods 21 are inserted into the interior of each of the multiple sets of connecting holes 11. The I-beam frame 2 is tightly attached to the left side surface of the main beam 1. Insulation board 5 is filled between the I-beam frame 2 and the main beam 1. The outer formwork 4 of the steel frame is tightly attached to the right side surface of the main beam 1. Multiple sets of longitudinally spaced main keels 41 are provided on the right side surface of the outer formwork 4. Four sets of vertically spaced secondary keels 42 are provided on the right side of the multiple sets of main keels 41. Multiple sets of first fixing nuts 22 are longitudinally spaced welded to the inner side surface of the main beam 1. The multiple sets of first fixing nuts 22 are respectively threaded to the left end of the fixing tie rod 21. The second fixing nut 23 is threaded to the right end of the fixing tie rod 21.
[0032] During the installation process, the welding points are first determined on the side wall of the I-beam frame 2. Then, multiple sets of first fixing nuts 22 are welded to the side of the I-beam frame 2. Four first fixing nuts 22 are vertically welded to the side of the I-beam frame 2. The number of welding points is determined according to the specific length of the I-beam frame 2. Then, the left ends of multiple sets of fixing tie rods 21 are threaded to the first fixing nuts 22.
[0033] Meanwhile, during the welding of the first fixing nut 22, drilling points are determined on the surface of the main beam 1, and connection holes 11 are opened. During the installation process, after the insulation board 5 is filled into the interior of the I-beam frame 2, multiple sets of fixing tie rods 21 are inserted into multiple sets of connection holes 11 on the surface of the main beam 1. Then, the outer template 4 of the steel frame, the main keel 41 and the secondary keel 42 are installed sequentially on the right side of the main beam 1, and the right end of the fixing tie rod 21 passes through the through holes on the surface of the outer template 4 of the steel frame, the main keel 41 and the secondary keel 42. Then, the second fixing nut 23 is threaded to the right end of the fixing tie rod 21 to lock and fix the I-beam frame 2, the outer template 4 of the steel frame, the main keel 41 and the secondary keel 42 to the main beam 1, thus completing the fixing of the I-beam frame 2.
[0034] See Figure 3 and Figure 5The inner side of the I-beam frame 2 is provided with multiple sets of reinforcing components 3. The reinforcing components 3 include a support frame 31, a connecting sleeve 32, a sleeve hole 33, a support plate 34, a fixing sleeve 35, a support screw 36, and an abutment plate 37. Four sets of connecting sleeves 32 are fixedly connected to the inner side of the support frame 31. The connecting sleeves 32 have sleeve holes 33 inside. The connecting sleeves 32 are fitted onto the surface of the fixed tie screw 21 through the sleeve holes 33. The upper and lower ends of the front and rear surfaces of the support frame 31 are fixedly connected to the support plates 34. The surfaces of the four sets of support plates 34 are fixedly connected to the fixing sleeves 35. The interior of the four sets of fixing sleeves 35 is threaded with the support screw 36. The outer end of the support screw 36 is fixedly connected to the abutment plate 37.
[0035] In addition, during the construction process, before installing the I-beam frame 2, four sets of connecting sleeves 32 are fitted onto the surfaces of the four sets of vertically distributed fixing tie rods 21, and the support frame 31 is moved to the inside of the I-beam frame 2. Then, multiple sets of support screws 36 are rotated, and the support screws 36 push the abutment plate 37 outward, so that the abutment plate 37 is tightly abutted against the upper and lower walls of the I-beam frame 2, thereby reinforcing the I-beam frame 2 and further improving the support strength of the I-beam frame 2.
[0036] The working principle of this utility model is as follows: A first fixing nut 22 is welded to the side of the I-beam frame 2, and a fixing tie rod 21 is tightened and fixed to the first fixing nut 22. The fixing tie rod 21 is then passed through the connecting hole 11 on the surface of the main beam body 1. After the outer template 4, main keel 41 and secondary keel 42 of the steel frame are installed, the second fixing nut 23 is threaded to the right end of the fixing tie rod 21, thereby fixing the I-beam frame 2 to the main beam body 1. This effectively improves the reinforcement capacity of the main beam body 1 and facilitates the quick fixing of the I-beam frame 2, thus improving construction efficiency.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A device for fixing a large cross-section I-beam single-sided form, comprising a beam body main body (1), characterized in that: The beam body (1) is provided with a reinforcement component on its side. The reinforcement component includes a connecting hole (11), an I-beam (2), a fixing tie rod (21), a first fixing nut (22), a second fixing nut (23), a steel frame outer template (4), a main keel (41), and a secondary keel (42). The surfaces of the steel frame outer template (4), the main keel (41), and the secondary keel (42) are provided with multiple sets of through holes. The surface of the beam body (1) is provided with multiple sets of connecting holes (11) at longitudinal intervals according to the position of the through holes on the surface of the steel frame outer template (4). The fixing tie rod (21) is inserted into the interior of each of the multiple sets of connecting holes (11).
2. The device for fixing the single-sided form of the large-section I-beam according to claim 1, characterized in that: The I-beam frame (2) is attached to the left side surface of the main beam body (1), and the space between the I-beam frame (2) and the main beam body (1) is filled with insulation board (5). The outer template (4) of the steel frame is attached to the right side surface of the main beam body (1).
3. The device for fixing the single-sided form of the large-section I-beam according to claim 2, characterized in that: The right side surface of the steel frame outer template (4) is provided with multiple sets of longitudinally spaced main keels (41), and the right side of the multiple sets of main keels (41) is provided with four sets of vertically spaced secondary keels (42).
4. The apparatus for securing a single-sided form of a large section I-beam as defined in claim 1 wherein: The inner surface of the main beam (1) is longitudinally and spaced apart by multiple sets of first fixing nuts (22). The multiple sets of first fixing nuts (22) are respectively threaded to the left end of the fixing tie rod (21), and the second fixing nut (23) is threaded to the right end of the fixing tie rod (21).
5. The apparatus for securing a single-sided form of a large section I-beam as defined in claim 1 wherein: The inner side of the I-beam frame (2) is provided with multiple sets of reinforcing components (3), the reinforcing components (3) include a support frame (31), a connecting sleeve (32), a sleeve hole (33), a support plate (34), a fixing sleeve (35), a support screw (36), and an abutment plate (37).
6. A device for securing a single-sided form for large section I-beams as defined in claim 5, wherein: The inner side of the support frame (31) is fixedly connected with four sets of connecting sleeves (32). The connecting sleeves (32) have socket holes (33) inside. The connecting sleeves (32) are sleeved on the surface of the fixed tie rod (21) through the socket holes (33).
7. A device for securing a single-sided form for large section I-beams as defined in claim 6, wherein: The support frame (31) has support plates (34) fixedly connected to the upper and lower ends of the front and rear surfaces, and the surfaces of the four sets of support plates (34) are fixedly connected to fixing sleeves (35).
8. The device for fixing the single-sided form of the large-section I-beam according to claim 7, characterized in that: Each of the four sets of fixed sleeves (35) has a support screw (36) threaded inside, and an abutment plate (37) is fixedly connected to the outer end of each support screw (36).