Adjustable formwork structure of frame column
By combining steel formwork and column hoop structure, the problems of cumbersome installation and difficult adjustment of existing frame column formwork systems are solved, realizing the adjustability and reinforcement of formwork and improving construction efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG JIUWEI ENG SAFETY TECH CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-05-15
AI Technical Summary
Existing frame column formwork systems are cumbersome to install, difficult to adjust, and lack versatility, making them unsuitable for different cross-sectional dimensions and complex construction conditions, thus affecting construction efficiency and quality.
The steel formwork and column hoop structure are used. Through the combination of channel steel columns, adjustable diagonal bracing and fixed diagonal bracing, and using flat bolts, tie bolts and bolts for connection, the formwork can be adjusted and reinforced to adapt to different construction cross-section sizes.
It enables convenient assembly and efficient fixing of templates, has strong adaptability, improves construction efficiency and quality, and the device is sturdy and durable with a high number of reuses.
Smart Images

Figure CN224244423U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to an adjustable template structure for frame columns. Background Technology
[0002] Frame columns are crucial load-bearing components in cast-in-place concrete structures, and formwork structures are essential to ensure the quality of column formation during construction. Existing column formwork systems often employ wooden formwork, aluminum alloy formwork, or standardized steel formwork, reinforced with column hoops and tie rods. However, these systems suffer from cumbersome installation, difficult adjustment, and poor versatility, making them unsuitable for different cross-sectional dimensions or complex construction conditions, thus impacting construction efficiency and quality. Therefore, there is an urgent need for an adjustable, easy-to-assemble, and highly adaptable formwork structure for frame columns to improve construction efficiency and broaden its applicability. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides an adjustable template structure for frame columns, which solves the problems mentioned in the background section.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustable template structure for frame columns, comprising several steel templates and column hoops located on the outside of the steel templates, wherein each steel template is provided with an L-shaped connecting plate at both ends.
[0005] The column clamp consists of several channel steel columns, several tie bolts, adjustable diagonal bracing, and fixed diagonal bracing. The channel steel columns are located on the outside of the steel formwork. The steel formwork has a second mounting hole, and the inner cavity of the second mounting hole is equipped with a bolt. The steel formwork is fitted with flat bolts by the bolts, and the steel formwork is connected to the channel steel columns by the flat bolts.
[0006] The fixed diagonal bracing unit consists of a stiffening rib and a diagonal angle steel. A stiffening rib and a diagonal angle steel are welded to one side of one end of the channel steel column, with the diagonal angle steel located outside the stiffening rib and connected to it.
[0007] The adjustable diagonal brace consists of two diagonal angle steels, two stiffening ribs, and a mounting block.
[0008] The inner cavity of the other end of the channel steel column is provided with an installation block, which can slide within the inner cavity of the channel steel column. Several installation holes are opened on the surface of the other end of the channel steel column, and installation bolts are installed in the inner cavity of the installation holes. One end of the installation bolt is threaded into the inside of the installation block to fix the installation block. A stiffening rib is welded to one end of the installation block. A diagonal angle steel is fixedly connected to the outside of the stiffening rib. The tie rod passes through the diagonal angle steel, the stiffening rib, the installation block, the channel steel column, the stiffening rib, and the diagonal angle steel to connect two adjacent channel steel columns.
[0009] Preferably, the L-connecting plate is provided with bolts, one end of which passes through the steel template and is threaded with a nut.
[0010] Preferably, the flat bolt penetrates the channel steel column and extends to the outside of the channel steel column, and a nut and a washer are installed on the flat bolt.
[0011] Preferably, the channel steel column has a hole inside that is adapted to the flat bolt.
[0012] Preferably, the bolt has metal washers at both ends, and both ends of the bolt are threaded with a V-shaped nut.
[0013] Preferably, the second tie angle steel, the second stiffening rib, the mounting block, the first stiffening rib, and the first diagonal tie angle steel all have inclined grooves on their sides for installing tie bolts.
[0014] This utility model provides an adjustable template structure for frame columns, which has the following advantages:
[0015] This adjustable formwork structure utilizes a combination of flat bolts, channel steel columns, two diagonal angle steels, two stiffening ribs, mounting blocks, tie bolts, one stiffening rib, and one diagonal angle steel. By adjusting the installation position of the mounting blocks, the inner diameter of the assembled channel steel columns can be adjusted (adjusting the cross-sectional dimensions). Simultaneously, tie bolts connecting adjacent diagonal angle steels, stiffening ribs, mounting blocks, stiffening ribs, and diagonal angle steels allow for the connection of two adjacent channel steel columns, securing the four channel steel columns around the steel formwork. This reinforces the steel formwork and strengthens the formwork system. The adjustable column hoops accommodate different sizes of steel formwork, adapting to various construction cross-sectional dimensions. The all-steel structure is robust, durable, and has a high turnover rate. Furthermore, the tie-free design enhances construction efficiency. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the present invention.
[0017] Figure 2 This is a schematic diagram of the connection between the channel steel column and the steel formwork of this utility model;
[0018] Figure 3 This is a structural schematic diagram of the front of the channel steel column of this utility model;
[0019] Figure 4 This is a top view of the channel steel column of this utility model.
[0020] Figure 5 This is a schematic diagram of the structure of the flat bolt of this utility model.
[0021] Figure 6 This is a schematic diagram of the structure of the pull bolt of this utility model;
[0022] Figure 7 This is a schematic diagram of the adjustable inclined support of this utility model;
[0023] Figure 8 This is a schematic diagram of the side structure of the adjustable inclined support of this utility model;
[0024] Figure 9 This is a top view of the connection between the mounting block and the stiffening rib 2 of this utility model;
[0025] Figure 10 This is a schematic diagram of the side structure of the inclined angle steel of this utility model.
[0026] Figure 11 These are diagrams showing the adjustable inclined support and the channel steel column of this utility model at different installation positions;
[0027] Figure 12 This is a schematic diagram of another configuration of the present invention.
[0028] Figure 13 This is a schematic diagram of another configuration of the present invention.
[0029] Figure 14 This is a front view of the steel formwork of this utility model;
[0030] Figure 15 This is a right-side view of the steel formwork of this utility model;
[0031] Figure 16 This is a top view of the steel formwork of this utility model;
[0032] Figure 17 This is a front view of other steel templates of different specifications according to this utility model.
[0033] In the diagram: 1. Channel steel column; 2. Steel formwork; 3. Flat bolt; 4. L-connecting plate; 5. Tie bolt; 6. Stiffening rib one; 7. Diagonal angle steel one; 8. Mounting block; 9. Diagonal angle steel two; 10. Stiffening rib two; 11. Mounting hole one; 12. Mounting hole two; 13. Mounting bolt. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0035] Example 1: Refer to Figures 1-17 This utility model provides an adjustable template structure for frame columns, including several steel templates 2 and column hoops located on the outside of the steel templates 2. Both ends of the steel templates 2 are provided with L-shaped connecting plates 4, and two adjacent steel templates 2 are connected by the L-shaped connecting plates 4 to form a U-shape.
[0036] The column hoop consists of several channel steel columns 1, several tie bolts 5, adjustable diagonal bracing, and fixed diagonal bracing.
[0037] The channel steel column 1 is located outside the steel formwork 2. The steel formwork 2 has mounting holes 12, and bolts are installed inside the mounting holes 12. Flat bolts 3 are installed on the steel formwork 2 via these bolts, connecting it to the channel steel column 1. The steel formwork 2 is divided into two types: standard-sized formwork and modular formwork. For example, standard formwork sizes range from 600-1300 mm in increments of 200 mm, while modular formwork sizes range from 100-300 mm in increments of 100 mm. By using standard formwork and adjustable formwork, continuous changes in the formwork cross-section can be achieved.
[0038] The fixed diagonal bracing is composed of stiffening rib 6 and diagonal angle steel 7. One side of one end of the channel steel column 1 is welded with stiffening rib 6 and diagonal angle steel 7, and diagonal angle steel 7 is located outside of stiffening rib 6 and connected to it. The weld between diagonal angle steel 7 and channel steel column 1 cannot extend beyond the edge of channel steel column 1.
[0039] The adjustable inclined support consists of inclined angle steel 29, stiffening rib 20, and mounting block 8. The mounting block 8 is located in the inner cavity of the other end of the channel steel column 1, allowing it to slide within the cavity. Several mounting holes 11 are formed on the surface of the other end of the channel steel column 1, and mounting bolts 13 are installed within the inner cavities of these holes. One end of each mounting bolt 13 is threaded into the mounting block 8 to secure it. A stiffening rib 20 is welded to one end of the mounting block 8, and inclined angle steel 29 is fixedly connected to the outer side of the stiffening rib 20. A tie bolt 5 passes through inclined angle steel 29, stiffening rib 20, mounting block 8, channel steel column 1, stiffening rib 10, and inclined angle steel 7, connecting two adjacent channel steel columns 1. Metal washers are provided at both ends of the tie bolt 5. A V-shaped nut is threaded onto both ends of the tie bolt 5.
[0040] By adjusting the installation position of the adjustable tie rod, the inner diameter of the assembled channel steel column 1 can be adjusted. It can be used for independent square columns with diameters of 600mm, 700mm, 800mm, 900mm, 1000mm, 1100mm, 1200mm, 1300mm, and 1400mm.
[0041] Bolts are provided on the L-connecting plate 4. One end of the bolt passes through the steel template 2 and is threaded with a nut, thereby connecting the two steel templates 2.
[0042] The flat bolt 3 penetrates the channel steel column 1 and extends to the outside of the channel steel column 1. The channel steel column 1 has a hole inside that matches the flat bolt 3. A nut and a washer are installed on the flat bolt 3. The flat bolt 3 is a tool used to fix the column hoop to the steel formwork 2; one end is a threaded rod, and the other end is flat and has a round hole.
[0043] In summary, this adjustable formwork structure for the frame column is used as follows: First, select steel formwork 2 of appropriate size according to the design drawings. Taking a directional concrete column with a diameter of 1600mm as an example, the length of steel formwork 2 is 1600mm. Form an opening shape with four steel formwork 2. Then, take several L-shaped connecting plates 4 and place them against the ends of two adjacent steel formwork 2. Use bolts to connect and fix the L-shaped connecting plates 4 to the steel formwork 2, thus connecting and fixing the four steel formwork 2. Use the mounting holes 12 and bolts to install the flat bolts 3 onto the steel formwork 2. Then, place the channel steel column 1 against the outside of the steel formwork 2, aligning the holes on the channel steel column 1 corresponding to the flat bolts 3, inserting the flat bolts 3 through the channel steel column 1. Place a washer at the end of the flat bolt 3 and use a nut to secure it, thus fixing the channel steel column 1 to the outside of the steel formwork 2. Repeat the above operations. Multiple channel steel columns 1 are installed. After installation, two adjacent channel steel columns 1 need to be connected. The installation block 8 is inserted into the inner cavity of the channel steel column 1 and slid to the appropriate position. Then, the installation bolt 13 is passed through the installation hole 11 and connected to the installation block 8. The installation block 8 is installed on the channel steel column 1. Then, the tie bolt 5 is passed through the adjacent diagonal angle steel 9, stiffening rib 10, installation block 8, channel steel column 1, stiffening rib 6, and diagonal angle steel 7, so that both ends of the tie bolt 5 are exposed. Then, metal washers are fitted on both ends of the tie bolt 5 and locked with a U-shaped nut. Then, two adjacent channel steel columns 1 are connected. The above operation is repeated to connect them in sequence to complete the assembly of the template. Four channel steel columns 1 are grouped together. According to the height of the poured column, the steel template 2 of the specified height is selected, and multiple groups of channel steel columns 1 are installed according to the site conditions.
[0044] To accommodate square column structures of varying sizes, the steel formwork 2 comes in different dimensions. During use, four steel formwork 2 panels are secured together using bolts and L-shaped connecting plates 4. The steel formwork 2 can be customized as a single unit, or multiple smaller formwork panels can be combined using bolts.
[0045] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0046] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0047] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An adjustable formwork structure for frame columns, comprising a plurality of steel formwork panels (2) and column hoops located outside the steel formwork panels (2), characterized in that: Both ends of the steel formwork (2) are provided with L-connecting plates (4). The column hoop consists of several channel steel columns (1), several tie bolts (5), adjustable diagonal bracing, and fixed diagonal bracing. The channel steel columns (1) are located outside the steel formwork (2). The steel formwork (2) has a second mounting hole (12) and a bolt inside the second mounting hole (12). The steel formwork (2) is fitted with a flat bolt (3) by the bolt, and the steel formwork (2) is connected to the channel steel column (1) by the flat bolt (3). The fixed diagonal bracing is composed of stiffening rib 1 (6) and diagonal angle steel 1 (7). Stiffening rib 1 (6) and diagonal angle steel 1 (7) are welded to one side of one end of the channel steel column (1), and diagonal angle steel 1 (7) is located outside the stiffening rib 1 (6) and connected to it. The adjustable inclined tie rod consists of two inclined angle steels (9), two stiffening ribs (10), and a mounting block (8). The inner cavity of the other end of the channel steel column (1) is provided with an installation block (8). The installation block (8) can slide in the inner cavity of the channel steel column (1). Several installation holes (11) are opened on the surface of the other end of the channel steel column (1). An installation bolt (13) is installed in the inner cavity of the installation hole (11). One end of the installation bolt (13) is threaded into the installation block (8) to fix the installation block (8). A stiffening rib (10) is welded to one end of the installation block (8). A diagonal angle steel (9) is fixedly connected to the outside of the stiffening rib (10). The tie bolt (5) passes through the diagonal angle steel (9), the stiffening rib (10), the installation block (8), the channel steel column (1), the stiffening rib (6), and the diagonal angle steel (7) to connect two adjacent channel steel columns (1).
2. The adjustable template structure for frame columns according to claim 1, characterized in that: The L connecting plate (4) is provided with bolts, one end of which passes through the steel template (2) and is threaded with a nut.
3. The adjustable template structure for frame columns according to claim 1, characterized in that: The flat bolt (3) passes through the channel steel column (1) and extends to the outside of the channel steel column (1). A nut and a washer are installed on the flat bolt (3).
4. The adjustable formwork structure for frame columns according to claim 1, characterized in that: The channel steel column (1) has a hole inside that is compatible with the flat bolt (3).
5. The adjustable formwork structure for frame columns according to claim 1, characterized in that: The bolt (5) has metal washers at both ends, and both ends of the bolt (5) are threaded with mountain-shaped nuts.
6. The adjustable template structure for frame columns according to claim 1, characterized in that: The sides of the second angle steel (9), the second stiffening rib (10), the mounting block (8), the first stiffening rib (6), and the first diagonal angle steel (7) are all provided with inclined grooves for installing the tie bolts (5).