Bridge and culvert construction formwork supporting structure

By designing a bridge and culvert construction formwork support structure containing formwork components and locking components, the combination of card blocks and locking bodies is used to achieve stable support and rapid disassembly of the formwork, which solves the difficulty of rapid support structure and limit fixation in the prior art. The problem.

CN222139814UActive Publication Date: 2024-12-10JIANG AO BAI ROAD & BRIDGE ENGINEERING CO LTD
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Patent Information

Application Number
CN202421405573.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-19
Publication Date
2024-12-10
Estimated Expiration
2034-06-19

AI Technical Summary

Technical Problem

The existing construction formwork support structure is difficult to quickly support and fix the limits when used, and it is not convenient for rapid disassembly of the formwork after concrete is formed.

Method used

A bridge and culvert construction formwork support structure including a formwork assembly, a support assembly, a first locking assembly and a second locking assembly are designed, through an isosceles trapezoidal structure, a card block, a U-shaped block, a rotating roller, an L-shaped block and The combination of locking bodies and other components achieves stable support and rapid disassembly of the template.

Benefits of technology

The stable support and rapid disassembly of the formwork are achieved, solving the problem that the formwork support structure is difficult to quickly support and fix the limits when used in the prior art, and it is inconvenient to disassemble after concrete forming.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of plate supporting structures, in particular to a bridge and culvert construction formwork supporting structure. The technical problems that in the prior art, when a construction formwork supporting structure is used, a formwork is difficult to rapidly support, limit and fix, and the formwork is inconvenient to rapidly disassemble after concrete is formed are solved. According to the technical scheme, the bridge and culvert construction formwork supporting structure comprises a formwork assembly; the device further comprises a supporting assembly, a first locking assembly and a second locking assembly. The long block is arranged and can be limited by the second mounting groove, and the clamping groove is limited by the clamping plate, so that the locking body can be stably placed, a template body can be stably supported, meanwhile, disassembly and assembly are convenient, and the problems that in the prior art, when a construction template supporting structure is used, a template is difficult to rapidly support, limit and fix, and the construction cost is low are solved. And after the concrete is formed, the template is inconvenient to disassemble quickly.
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Description

Technical Field

[0001] The utility model belongs to the field of plate support structures, and in particular relates to a bridge and culvert construction template support structure. Background Art

[0002] In bridge and culvert construction, the construction formwork support structure is a key auxiliary equipment. The formwork is usually used to support concrete pouring to ensure that the concrete maintains the expected shape and structure during the curing process. Traditional formwork support structures are usually built with steel pipes, steel plates and other materials. Before pouring concrete, it is necessary to manually build the formwork and fix the formwork, and then pour concrete into the area surrounded by the formwork. However, the construction formwork support structure in the prior art is difficult to quickly support and limit the formwork when in use. It is not convenient to quickly disassemble the formwork after the concrete is formed, and further improvement is needed. Utility Model Content

[0003] In order to overcome the problems that the construction formwork support structure in the prior art is difficult to quickly support and limit the formwork when in use, and it is inconvenient to quickly disassemble the formwork after the concrete is formed.

[0004] The technical solution of the utility model is: a bridge and culvert construction template support structure, including a template assembly; also including a support assembly, a first locking assembly and a second locking assembly; a support assembly for supporting is arranged on one side of the template assembly, a first locking assembly for locking the support assembly is arranged on the support assembly, and a second locking assembly for locking the first locking assembly is arranged on the template assembly;

[0005] The template assembly includes a template body, a first mounting groove, a fixed column, a limiting body, a second mounting groove, a limiting groove, a limiting block, a positioning groove and a clamping block; a first mounting groove symmetrically about the center of the template body is opened at the upper end of the template body, the template body is divided into four, the top surface of the template body is an isosceles trapezoid, the inclined surfaces of the four template bodies are fitted in pairs to form a frame structure, the first mounting groove is through-set on the inclined surface of the template body, and the inner wall of the first mounting groove on the two adjacent inclined surfaces of the template bodies is movably provided with a clamping block, one side of the template body is fixedly provided with two fixing columns symmetrical about the center of the template body, and two limiting bodies symmetrical about the center of the template body are fixedly provided on the upper part of one side of the template body, and the second mounting groove and the limiting groove are through-set at the upper and lower ends of the limiting body, the second mounting groove and the limiting groove are connected to each other, the limiting groove is through-set on one side of the limiting body, the limiting block is fixedly connected to the center of one side of the template body, and the middle part of one side of the template body is provided with a positioning groove symmetrical about the center of the template body;

[0006] The support assembly includes a first U-shaped block, a roller, an L-shaped block, a positioning hole, a slot, a positioning column and a handle; a first U-shaped block is movably provided on one side of the template body, rollers symmetrical about the center of the first U-shaped block are rotatably installed on the inner walls of both sides of the first U-shaped block, an L-shaped block is fixedly connected to the upper end of the roller, positioning holes and slots are penetrated on both sides of the L-shaped block, the slots are penetrated and arranged at the end of the L-shaped block, the inner wall of the positioning hole and the inner wall of the positioning groove are in the same plane, positioning columns are movably provided on the inner wall of the positioning hole and the inner wall of the positioning groove, and a handle symmetrical about the center of the first U-shaped block is fixedly connected to the upper end of the first U-shaped block;

[0007] The first locking assembly includes a locking body, a first locking groove, a fixed body, a through hole, a movable rod, a U-shaped rod, a clamping plate, and a second locking groove; a locking body is movably provided on one side of the template body, and the upper and lower end surfaces of the inner wall of the locking body fit with the upper and lower end surfaces of the limit block, and the first locking groove is penetrated on both sides of the locking body, and the upper end of the locking body is fixedly connected to the fixed body, and the two ends of the fixed body are penetrated to open through holes, and the inner wall of the through hole is movably provided with a movable rod, and the outer walls of the two ends of the movable rod are fixedly connected with U-shaped rods, and the two ends of the locking body are fixedly connected with clamping plates symmetrical about the center of the locking body, and the clamping plates and the clamping grooves are adapted;

[0008] The second locking assembly includes a long block and a second U-shaped block; the inner wall of the limiting body is movably provided with a long block, one side of the long block is fixedly connected to the second U-shaped block, the two ends of the second U-shaped block are fitted with the two ends of the inner wall of the limiting groove, the lower part of the outer wall of the long block is fitted with the inner wall of the second locking groove, and the outer wall of the U-shaped rod is fitted with the inner walls of the two second U-shaped blocks.

[0009] Preferably, when in use, four template bodies are adjacent to each other to form a frame-shaped structure. At this time, the first mounting grooves on the inclined surfaces of two adjacent template bodies are interconnected, and then the card block is inserted into the inner walls of the two mutually interconnected first mounting grooves, and then the first U-shaped block is moved to one side of the template body, and the L-shaped block is manually rotated so that the inner wall of the positioning hole and the inner wall of the positioning groove are in the same plane, and then the positioning column is passed through the positioning hole and placed on the inner wall of the positioning groove, and then the locking body is taken out, and the card plate is placed on the inner wall of the card groove, at this time, the upper and lower ends of the inner wall of the locking body are fitted with the upper and lower ends of the limit block, and then the long block is removed from The lock body is then locked in place by the U-shaped rod, which is then locked into place in the lock body, and the lock body is locked in place by the U-shaped rod.

[0010] Preferably, the height of the first mounting groove is one meter, and the height of the card block is greater than one meter. The card block is inserted into the inner wall of the first mounting groove on the inclined surface of two adjacent template bodies. The card block can be used to limit the two mutually interpenetrating first mounting grooves, thereby achieving stable placement of two adjacent template bodies.

[0011] Preferably, the card block is in an "L"-shaped structure and is made of stainless steel. The card block can be quickly installed. When the four card blocks are pulled out from the first installation grooves adjacent to the four template bodies, the four template bodies can be quickly disassembled.

[0012] Preferably, the upper end of the limit block is fifteen centimeters away from the lower end of the limit body, which facilitates the rapid installation and placement of the locking body.

[0013] Preferably, the handle is in a "U" shape, and the L-shaped block can be blocked by the handle when it rotates away from the center of the first U-shaped block. The arrangement that the L-shaped block can be blocked by the handle when it rotates away from the center of the first U-shaped block can prevent the L-shaped block from rotating too much, thereby facilitating the transportation of the first U-shaped block by holding the two handles.

[0014] Preferably, one end of the two long blocks close to each other fits with both ends of the limit block, and the setting of one end of the two long blocks close to each other fits with both ends of the limit block can realize a more stable placement of the locking body on the limit block.

[0015] Preferably, the lower end of the long block passes through the second locking groove and extends to the bottom of the locking body, the lower end surface of the second U-shaped block fits with the upper end surface of the locking body, the lower end of the long block passes through the second locking groove and extends to the bottom of the locking body, and the lower end surface of the second U-shaped block fits with the upper end surface of the locking body, which is conducive to the stable placement of the long block.

[0016] Beneficial effects of the utility model:

[0017] 1. Form a frame-shaped structure by surrounding four template bodies adjacent to each other. At this time, the first installation grooves on the inclined surfaces of two adjacent template bodies are interconnected. Then insert the card block into the inner wall of the two mutually interpenetrating first installation grooves. Then move the first U-shaped block to one side of the template body, manually rotate the L-shaped block so that the inner wall of the positioning hole and the inner wall of the positioning groove are in the same plane, then pass the positioning column through the positioning hole and place it on the inner wall of the positioning groove, then take out the locking body, and place the card plate on the inner wall of the card groove. At this time, the upper and lower ends of the inner wall of the locking body are in contact with the upper and lower ends of the limit block, and then the long block is inserted from top to bottom. The U-shaped rod is then manually rotated to make the U-shaped rod enter the inner wall of the groove of the second U-shaped block, so that the locking body can be stably placed. The long block is limited by the second installation groove, and the card slot is limited by the card plate, so that the locking body can be stably placed, thereby achieving stable support for the template body and convenient disassembly and assembly, solving the problem that the construction template support structure in the prior art is difficult to quickly support and limit the template when in use, and it is inconvenient to quickly disassemble the template after concrete is formed.

[0018] 2. By inserting the card block into the inner wall of the first mounting groove on the inclined surface of two adjacent template bodies, the card block can be used to limit the two mutually interpenetrating first mounting grooves, thereby realizing the stable placement of two adjacent template bodies. When the four card blocks are pulled out from the first mounting grooves at adjacent locations of the four template bodies, the four template bodies can be quickly disassembled;

[0019] 3. By setting two handles, the L-shaped block can be blocked by the handles when it rotates away from the center of the first U-shaped block, which can prevent the L-shaped block from rotating too much. At the same time, it is convenient to carry the first U-shaped block by holding the two handles. By setting the ends of the two long blocks that are close to each other to fit the two ends of the limit block, the locking body can be placed on the limit block more stably, thereby making the installation of the template body more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 What is shown is a three-dimensional structural schematic diagram of a bridge and culvert construction template support structure of the utility model;

[0021] Figure 2 What is shown is a three-dimensional split structure schematic diagram of a template component of a bridge and culvert construction template support structure of the utility model;

[0022] Figure 3 What is shown is a three-dimensional split structure schematic diagram of a support component of a bridge and culvert construction template support structure of the utility model;

[0023] Figure 4What is shown is a three-dimensional structural schematic diagram of a first locking component of a bridge and culvert construction template support structure of the utility model;

[0024] Figure 5 What is shown is a schematic diagram of the three-dimensional split structure of the second locking groove and the long block of a bridge and culvert construction template support structure of the utility model;

[0025] Figure 6 What is shown is a top view schematic diagram of a template assembly of a bridge and culvert construction template support structure of the utility model;

[0026] Figure 7 What is shown is a front view of a bridge and culvert construction formwork support structure of the utility model.

[0027] The marks in the accompanying drawings are: 1. template assembly; 101. template body; 102. first mounting groove; 103. fixed column; 104. limiting body; 105. second mounting groove; 106. limiting groove; 107. limiting block; 108. positioning groove; 109. clamping block; 2. support assembly; 201. first U-shaped block; 202. roller; 203. L-shaped block; 204. positioning hole; 205. clamping slot; 206. positioning column; 207. handle; 3. first locking assembly; 301. locking body; 302. first locking groove; 303. fixed body; 304. through hole; 305. movable rod; 306. U-shaped rod; 307. clamping plate; 308. second locking groove; 4. second locking assembly; 401. long block; 402. second U-shaped block. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0029] See also Figure 1-7 The utility model provides an embodiment: a bridge and culvert construction template support structure, including a template assembly 1; also including a support assembly 2, a first locking assembly 3 and a second locking assembly 4; a support assembly 2 for supporting is provided on one side of the template assembly 1, a first locking assembly 3 for locking the support assembly 2 is provided on the support assembly 2, and a second locking assembly 4 for locking the first locking assembly 3 is provided on the template assembly 1;

[0030] The template assembly 1 includes a template body 101, a first mounting groove 102, a fixing column 103, a limiting body 104, a second mounting groove 105, a limiting groove 106, a limiting block 107, a positioning groove 108 and a clamping block 109; the upper end of the template body 101 is provided with a first mounting groove 102 symmetrical about the center of the template body 101, the template body 101 is divided into four, the top surface of the template body 101 is an isosceles trapezoid, the inclined surfaces of the four template bodies 101 are fitted in pairs to form a frame structure, the first mounting groove 102 is through-set on the inclined surface of the template body 101, and the inner wall of the first mounting groove 102 on the inclined surface of two adjacent template bodies 101 is movable A clamping block 109 is provided, one side of the template body 101 is fixedly connected with two fixing columns 103 symmetrical about the center of the template body 101, and the upper part of one side of the template body 101 is fixedly connected with two limiting bodies 104 symmetrical about the center of the template body 101, and the upper and lower ends of the limiting body 104 are penetrated with a second installation groove 105 and a limiting groove 106, the second installation groove 105 and the limiting groove 106 are mutually connected, and the limiting groove 106 is penetrated and arranged on one side of the limiting body 104, and a limiting block 107 is fixedly connected to the center of one side of the template body 101, and a positioning groove 108 symmetrical about the center of the template body 101 is opened in the middle of one side of the template body 101;

[0031] The support assembly 2 includes a first U-shaped block 201, a roller 202, an L-shaped block 203, a positioning hole 204, a slot 205, a positioning column 206 and a handle 207; the first U-shaped block 201 is movably provided on one side of the template body 101, and rollers 202 symmetrically about the center of the first U-shaped block 201 are rotatably installed on the inner walls of both sides of the first U-shaped block 201, and the upper end of the roller 202 is fixedly connected to the L-shaped block 203, and positioning holes 204 and slots 205 are penetrated on both sides of the L-shaped block 203, and the slots 205 are penetrated and arranged at the end of the L-shaped block 203, the inner wall of the positioning hole 204 and the inner wall of the positioning groove 108 are in the same plane, and the inner wall of the positioning hole 204 and the inner wall of the positioning groove 108 are movably provided with positioning columns 206, and the upper end of the first U-shaped block 201 is fixedly connected to a handle 207 symmetrically about the center of the first U-shaped block 201;

[0032] The first locking assembly 3 includes a locking body 301, a first locking groove 302, a fixed body 303, a through hole 304, a movable rod 305, a U-shaped rod 306, a clamping plate 307 and a second locking groove 308; a locking body 301 is movably provided on one side of the template body 101, and the upper and lower end surfaces of the inner wall of the locking body 301 are fitted with the upper and lower end surfaces of the limit block 107, and the first locking groove 302 is penetrated on both sides of the locking body 301, and the upper end of the locking body 301 is fixedly connected to the fixed body 303, and the two ends of the fixed body 303 are penetrated to open a through hole 304, and the inner wall of the through hole 304 is movably provided with a movable rod 305, and the outer walls of the two ends of the movable rod 305 are fixedly connected to the U-shaped rod 306, and the two ends of the locking body 301 are fixedly connected to the clamping plates 307 symmetrical about the center of the locking body 301, and the clamping plates 307 are adapted to the clamping groove 205;

[0033] The second locking assembly 4 includes a long block 401 and a second U-shaped block 402; the inner wall of the limiting body 104 is movably provided with a long block 401, and a second U-shaped block 402 is fixedly connected to one side of the long block 401, and the two ends of the second U-shaped block 402 are fitted with the two ends of the inner wall of the limiting groove 106, the lower part of the outer wall of the long block 401 is fitted with the inner wall of the second locking groove 308, and the outer wall of the U-shaped rod 306 is fitted with the inner walls of the two second U-shaped blocks 402.

[0034] See also Figure 1 and 2 In this embodiment, the height of the first installation groove 102 is one meter, and the height of the block 109 is greater than one meter.

[0035] See also Figure 2 In this embodiment, the block 109 is in an “L” shape and is made of stainless steel.

[0036] See also Figure 2 In this embodiment, the upper end of the limiting block 107 is fifteen centimeters away from the lower end of the limiting body 104.

[0037] See also Figure 3 In this embodiment, the handle 207 is in a “U” shape, and the L-shaped block 203 can be blocked by the handle 207 when rotating in a direction away from the center of the first U-shaped block 201 .

[0038] See also Figure 7 In this embodiment, the ends of the two long blocks 401 that are close to each other are in contact with the two ends of the limit block 107.

[0039] See also Figure 4 and 7 In this embodiment, the lower end of the long block 401 passes through the second locking groove 308 and extends to the bottom of the locking body 301 , and the lower end surface of the second U-shaped block 402 is in contact with the upper end surface of the locking body 301 .

[0040] When working, four template bodies 101 are adjacent to each other to form a frame-shaped structure. At this time, the first installation grooves 102 on the inclined surfaces of two adjacent template bodies 101 are mutually connected, and then the clamping block 109 is inserted into the inner wall of the two mutually connected first installation grooves 102, and then the first U-shaped block 201 is moved to one side of the template body 101, and the L-shaped block 203 is manually rotated so that the inner wall of the positioning hole 204 and the inner wall of the positioning groove 108 are in the same plane, and then the positioning column 206 is passed through the positioning hole 204 and placed on the inner wall of the positioning groove 108;

[0041] Then, the locking body 301 is taken out, and the card plate 307 is placed on the inner wall of the card slot 205. At this time, the upper and lower ends of the inner wall of the locking body 301 are fitted with the upper and lower ends of the limit block 107. Then, the long block 401 is moved from top to bottom along the inner wall of the second installation groove 105, and finally the lower end of the second U-shaped block 402 is fitted with the upper end of the locking body 301. Then, the U-shaped rod 306 is manually rotated so that the U-shaped rod 306 enters the inner wall of the groove of the second U-shaped block 402, so that the locking body 301 can be stably placed. The long block 401 is limited by the second installation groove 105, and the card slot 205 is limited by the card plate 307, so that the locking body 301 can be stably placed, thereby achieving stable support for the template body 101;

[0042] When disassembly is required, the U-shaped rod 306 is moved out from the inner wall of the second U-shaped block 402, and then the locking body 301 is removed from the limit block 107, so that the clamping plate 307 is moved out from the inner wall of the clamping groove 205, and then the first U-shaped block 201 is moved away from one side of the template body 101 by holding the handle 207, and then the four clamping blocks 109 are pulled out from the first mounting grooves 102 adjacent to the four template bodies 101, so that the four template bodies 101 can be quickly disassembled.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A bridge and culvert construction formwork support structure, comprising a formwork assembly (1); characterized in that: It also comprises a support component (2), a first locking component (3) and a second locking component (4); a support component (2) for supporting is arranged on one side of the template component (1), a first locking component (3) for locking the support component (2) is arranged on the support component (2), and a second locking component (4) for locking the first locking component (3) is arranged on the template component (1); The template assembly (1) comprises a template body (101), a first mounting groove (102), a fixing column (103), a limiting body (104), a second mounting groove (105), a limiting groove (106), a limiting block (107), a positioning groove (108) and a clamping block (109); the upper end of the template body (101) is provided with a first mounting groove (102) symmetrical about the center of the template body (101); the template body (101) is divided into four; the top surface of the template body (101) is an isosceles trapezoid; the inclined surfaces of the four template bodies (101) are fitted in pairs to form a frame-shaped structure; the first mounting groove (102) is arranged in a through-type manner on the inclined surface of the template body (101); the inner walls of the first mounting grooves (102) on the inclined surfaces of two adjacent template bodies (101) are A clamping block (109) is movably provided, two fixing columns (103) are fixedly connected to one side of the template body (101) and are symmetrical about the center of the template body (101), two limiting bodies (104) are fixedly connected to the upper part of one side of the template body (101) and are symmetrical about the center of the template body (101), a second installation groove (105) and a limiting groove (106) are provided through the upper and lower ends of the limiting body (104), the second installation groove (105) and the limiting groove (106) are mutually connected, the limiting groove (106) is provided through one side of the limiting body (104), a limiting block (107) is fixedly connected to the center of one side of the template body (101), and a positioning groove (108) is provided in the middle of one side of the template body (101) and is symmetrical about the center of the template body (101); The support assembly (2) comprises a first U-shaped block (201), a roller (202), an L-shaped block (203), a positioning hole (204), a slot (205), a positioning column (206) and a handle (207); the first U-shaped block (201) is movably arranged on one side of the template body (101); rollers (202) symmetrical about the center of the first U-shaped block (201) are rotatably mounted on the inner walls of both sides of the first U-shaped block (201); the upper end of the roller (202) is fixedly connected to the L-shaped block (203); Positioning holes (204) and slots (205) are provided on both sides of the block (203); the slots (205) are provided through the ends of the L-shaped block (203); the inner wall of the positioning hole (204) and the inner wall of the positioning groove (108) are located in the same plane; the inner wall of the positioning hole (204) and the inner wall of the positioning groove (108) are movably provided with positioning posts (206); and the upper end of the first U-shaped block (201) is fixedly connected with a handle (207) symmetrical to the center of the first U-shaped block (201); The first locking assembly (3) comprises a locking body (301), a first locking groove (302), a fixing body (303), a through hole (304), a movable rod (305), a U-shaped rod (306), a clamping plate (307) and a second locking groove (308); a locking body (301) is movably provided on one side of the template body (101), the upper and lower end surfaces of the inner wall of the locking body (301) are in contact with the upper and lower end surfaces of the limit block (107), and first locking members are provided on both sides of the locking body (301). A locking groove (302), the upper end of the locking body (301) is fixedly connected to a fixed body (303), both ends of the fixed body (303) are penetrated by through holes (304), the inner wall of the through hole (304) is movably provided with a movable rod (305), the outer walls of both ends of the movable rod (305) are fixedly connected to U-shaped rods (306), both ends of the locking body (301) are fixedly connected to a clamping plate (307) symmetrical about the center of the locking body (301), and the clamping plate (307) and the clamping groove (205) are adapted to each other; The second locking assembly (4) comprises a long block (401) and a second U-shaped block (402); the inner wall of the limiting body (104) is movably provided with the long block (401), one side of the long block (401) is fixedly connected to the second U-shaped block (402), two ends of the second U-shaped block (402) are fitted with two ends of the inner wall of the limiting groove (106), the lower part of the outer wall of the long block (401) is fitted with the inner wall of the second locking groove (308), and the outer wall of the U-shaped rod (306) is fitted with the inner walls of the two second U-shaped blocks (402).

2. A bridge and culvert construction formwork support structure according to claim 1, characterized in that: The height of the first installation groove (102) is one meter, and the height of the clamping block (109) is greater than one meter.

3. A bridge and culvert construction formwork support structure according to claim 1, characterized in that: The clamping block (109) has an L-shaped structure and is made of stainless steel.

4. A bridge and culvert construction formwork support structure according to claim 1, characterized in that: The upper end of the limiting block (107) is 15 centimeters away from the lower end of the limiting body (104).

5. A bridge and culvert construction formwork support structure according to claim 1, characterized in that: The handle (207) is in a "U" shape, and the L-shaped block (203) can be blocked by the handle (207) when rotating in a direction away from the center of the first U-shaped block (201).

6. A bridge and culvert construction formwork support structure according to claim 1, characterized in that: The ends of the two long blocks (401) that are close to each other are fitted with the two ends of the limit block (107).

7. A bridge and culvert construction formwork support structure according to claim 1, characterized in that: The lower end of the long block (401) passes through the second locking groove (308) and extends to the bottom of the locking body (301), and the lower end surface of the second U-shaped block (402) fits with the upper end surface of the locking body (301).