Formwork reinforcing device
By combining inner and outer templates with clamping mechanisms and fixing structures, the stability problem of inclined web templates during the cast-in-place process was solved, achieving precise control of bridge alignment and improving construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-27
AI Technical Summary
The formwork for inclined web plates is prone to bending and tilting during the cast-in-place process, resulting in inaccurate bridge alignment, which is difficult to solve effectively using traditional reinforcement methods.
The inner and outer formwork is combined with a clamping mechanism and a fixing structure. The inner and outer formwork are clamped to the steel frame by the clamping mechanism and fixed by the fixing bracket and tie bolts to form a stable pouring space, thereby enhancing the stability and load-bearing capacity of the formwork.
This ensured the stability of the formwork during the pouring process, prevented bending and tilting, guaranteed the accuracy of the bridge alignment, improved construction safety and quality, and reduced construction risks.
Smart Images
Figure CN224047944U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of bridge construction, in particular to a formwork reinforcing device. BACKGROUND
[0002] With the development of bridge structure types, and the rapid development of highways and urban traffic in recent years, complex prestressed concrete structures such as widening bridges and curved bridges have been widely used. Due to the line type limitation, the upper structure of the box chamber bridge generally adopts cast-in-place, so the cantilever cast-in-place technology has been widely used.
[0003] The cantilever cast-in-place generally uses steel formwork or wood formwork as the web formwork reinforcement, and generally uses fixed steel pipe trusses for reinforcement. The traditional reinforcement method is to arrange fixed steel pipes at certain intervals in the transverse direction, longitudinal direction and vertical direction, and the fixed steel pipes abut against the formwork. However, the traditional web formwork reinforcement method is generally used for straight web reinforcement, and it is more difficult to reinforce the inclined web of the cast-in-place continuous box girder. The inclined web cast-in-place needs to use inner and outer formworks. The outer formwork is close to the outer side of the bridge, and the inner formwork is close to the middle of the bridge. There is a steel reinforcement frame between the inner and outer formworks for pouring.
[0004] When pouring the inclined web, the horizontal thrust is too large, causing the outer formwork to bend and deform, and the inner formwork to tilt under the tension of the outer formwork. If the web formwork is not well reinforced, it is easy to cause the formwork to bend and tilt during pouring, which cannot guarantee the linearity of the bridge. CONTENT OF THE INVENTION
[0005] In order to solve the problem of inclined web formwork reinforcement in the background art, the present application provides a formwork reinforcing device.
[0006] The formwork reinforcing device provided by the present application adopts the following technical solution:
[0007] A formwork reinforcing device, comprising an inner formwork and an outer formwork, a clamping mechanism is arranged between the inner formwork and the outer formwork, the inner formwork and the outer formwork are clamped on opposite sides of a steel reinforcement frame through the clamping mechanism, a pouring space is formed between the inner formwork and the outer formwork, and a fixing structure for fixing the inner formwork and the outer formwork is arranged on the inner formwork and the outer formwork.
[0008] By using the clamping mechanism to clamp the inner formwork and the outer formwork on the steel reinforcement frame, and by further providing a fixing structure on the inner formwork and the outer formwork, the horizontal bearing capacity of the inner formwork and the outer formwork is increased, the stability of the inclined web formwork during pouring is ensured, and the linearity of the bridge is guaranteed.
[0009] Preferably, the fixing structure comprises a first fixing support for fixing the inner formwork and a second fixing support for fixing the outer formwork, the first fixing support is arranged in the box chamber of the bridge, the first fixing support is in abutting fit with the inner formwork, and the second fixing support is fixedly arranged on the eaves of the bridge, the second fixing support is in abutting fit with the outer formwork.
[0010] By adopting the above technical scheme, the first fixing support and the second fixing support are respectively used for stabilizing the inner formwork and the outer formwork, and are in close abutting fit with the respective formwork. This design provides a double fixing mode, and ensures the stability of the formwork and the construction safety.
[0011] Preferably, the abutting surface of the first fixing support and the inner formwork is designed as a slope matched with the inner formwork, and the abutting surface of the second fixing support and the outer formwork is designed as a slope matched with the outer formwork.
[0012] By adopting the above technical scheme, the abutting surfaces of the first fixing support and the inner formwork and the second fixing support and the outer formwork are designed as mutually matched slopes, which can increase the contact area and provide better stability.
[0013] Preferably, rubber strips are arranged on the inner formwork and the outer formwork, and the rubber strips are located in the pouring space.
[0014] By adopting the above technical scheme, cracks may be generated in the hardening process of the concrete due to shrinkage and the like, and the arrangement of the rubber strips can reduce the constraint stress of the formwork on the concrete to some extent, and reduce the risk of crack generation.
[0015] Preferably, the first fixing support and the second fixing support are each composed of a plurality of fixedly connected fixed steel pipes, the plurality of fixed steel pipes comprise horizontal steel pipes and vertical steel pipes, the vertical steel pipes of the first fixing support are fixedly arranged in the box chamber of the bridge, the horizontal steel pipes of the first fixing support are in abutting fit with the inner formwork, the horizontal steel pipes of the second fixing support are in abutting fit with the outer formwork, and the abutting surface of the horizontal steel pipes of the first fixing support and the inner formwork is designed as a slope matched with the inner formwork.
[0016] By adopting the above technical scheme, the firmness and stability of the fixed steel pipes can effectively prevent the formwork from deforming in the pouring process, the first fixing support and the inner formwork form a stable triangular structure, and the strength of the overall structure is greatly enhanced.
[0017] Preferably, the vertical steel pipe of the second fixing support is fixedly arranged on the bridge eave of the bridge, the horizontal steel pipe of the second fixing support is arranged as a slope matched with the outer formwork, the horizontal steel pipe and the vertical steel pipe of the first fixing support and the inner formwork form a triangular structure, and the horizontal steel pipe and the vertical steel pipe of the second fixing support and the outer formwork form a triangular structure
[0018] By adopting the technical scheme, the rigidity and stability of the fixed steel pipe can effectively prevent the deformation of the formwork during pouring, and meanwhile, a stable triangular structure is formed between the fixed steel pipe and the outer formwork, so that the strength of the overall structure is greatly enhanced.
[0019] Preferably, the clamping mechanism comprises a tension bolt for clamping the inner formwork and the outer formwork, the tension bolt is arranged through the inner formwork, the outer formwork and the pouring space, and the inner formwork and the outer formwork are fixed at two ends of the steel frame by the tension bolt.
[0020] By adopting the technical scheme, the inner formwork and the outer formwork are clamped on the steel frame by the tension bolt, so that the spacing between the formworks is kept uniform, and the accuracy and quality of pouring are ensured.
[0021] Preferably, the inner formwork is further provided with a plurality of square timbers, and the inner formwork is further fixedly provided with a reinforcing steel pipe for fixing the square timbers, the reinforcing steel pipe is fixed to the inner formwork by the tension bolt, the square timbers are located between the reinforcing steel pipe and the inner formwork, and the horizontal steel pipe of the first support frame is in abutting cooperation with the reinforcing steel pipe.
[0022] By adopting the technical scheme, the square timbers are additionally arranged on the inner formwork to further enhance the stability, the square timbers effectively disperse the pressure during pouring of the concrete, the square timbers are fixed to the inner formwork by the reinforcing steel pipe and the tension bolt, the load-carrying capacity and the stability of the structure are enhanced, meanwhile, the first support frame is in close cooperation with the reinforcing steel pipe, so that the support effect is achieved, and the safety risk during pouring is reduced.
[0023] In summary, the present application has at least one of the following beneficial technical effects:
[0024] 1. Since the inner and outer formworks are combined by the fixing structure, the stability of the formwork during pouring is significantly improved, the problems such as bending and tilting of the formwork are effectively prevented, so that the accuracy of the bridge line is ensured, and the quality and safety of the construction are guaranteed.
[0025] 2. By adopting the combined structure of the fixed steel pipe, the overall stability and load-carrying capacity of the reinforcing structure are enhanced, and the flexibility and convenience during construction are greatly improved. Meanwhile, this design also helps to reduce the construction time and cost.
[0026] 3. The application of the draw bolt makes the connection of the inner and outer formwork more stable, and the addition of the square timber and the reinforcing steel pipe further strengthens the stability of the formwork, which jointly ensures the smooth progress of the construction process. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is the main embodiment of the overall structure of the application.
[0028] Reference signs: 1, inner formwork; 2, outer formwork; 3, clamping mechanism; 31, draw bolt; 4, first formwork; 5, pouring space; 6, fixing structure; 61, first fixing support; 62, second fixing support; 63, inclined surface; 64, fixed steel pipe; 641, horizontal steel pipe; 642, vertical steel pipe; 643, inclined steel pipe; 7, square timber; 8, reinforcing steel pipe; 9, rubber strip. DETAILED DESCRIPTION
[0029] The following will be described in detail with reference to the accompanying drawings. Figure 1 The application will be further described in detail.
[0030] The embodiment of the application discloses a formwork reinforcing device.
[0031] With reference to Figure 1 , a formwork reinforcing device, comprising an inner formwork 1 and an outer formwork 2, the acute angle between the inner formwork 1 and the horizontal plane and the acute angle between the outer formwork 2 and the horizontal plane are both 60° in the embodiment of the application, the inner formwork 1 and the outer formwork 2 are clamped on the opposite sides of a steel frame through a clamping mechanism 3, and a first formwork 4 is further fixedly arranged on the side between the inner formwork 1 and the outer formwork 2, the two sides of the first formwork 4 are fixed on the inner formwork 1 and the outer formwork 2, the inner formwork 1, the outer formwork and the first formwork 4 form a pouring space 5 together with the completed cantilever of the bridge, which is used for pouring concrete, and the inner formwork 1 and the outer formwork 2 are further provided with a fixing structure 6 for fixing the inner formwork 1 and the outer formwork 2, the horizontal bearing capacity of the inner formwork 1 and the outer formwork 2 is increased through the clamping mechanism 3 and the fixing structure 6, the stability of the inclined web plate formwork during pouring is ensured, and the linearity of the bridge is ensured.
[0032] With reference to Figure 1 , the clamping mechanism 3 comprises draw bolts 31 for clamping the inner formwork 1 and the outer formwork 2, the draw bolts 31 are arranged in multiple from top to bottom, any draw bolt 31 is arranged through the inner formwork 1, the outer formwork 2 and the pouring space 5, and the inner formwork 1 and the outer formwork 2 are fixed at the two ends of the steel frame through the draw bolts 31. The draw bolts 31 not only pass through the inner formwork 1 and the outer formwork 2, but also tightly fix the inner formwork 1 and the outer formwork 2, effectively maintain the uniformity of the spacing between the formworks, and ensure the accuracy and quality of pouring.
[0033] With reference to Figure 1, the fixed structure 6 includes a first fixed support 61 for fixing the inner formwork 1 and a second fixed support 62 for fixing the outer formwork 2, the first fixed support 61 is arranged in the box chamber of the bridge, the second fixed support 62 is fixedly arranged on the eaves of the bridge, the first fixed support 61 and the inner formwork 1 form an abutting fit, the second fixed support 62 and the outer formwork 2 form an abutting fit, the abutting surface of the first fixed support 61 and the inner formwork 1 is arranged as a slope 63 matched with the inner formwork 1, and the abutting surface of the second fixed support 62 and the outer formwork 2 is arranged as a slope 63 matched with the outer formwork 2, which can increase the contact area and provide better stability.
[0034] With reference to Figure 1 , the first fixed support 61 and the second fixed support 62 are both composed of a plurality of fixedly connected fixed steel pipes 64, the plurality of fixed steel pipes 64 include horizontal steel pipes 641 and vertical steel pipes 642, the vertical steel pipes 642 of the first fixed support 61 are fixedly arranged in the box chamber of the bridge, the horizontal steel pipes 641 of the first fixed support 61 form an abutting fit with the inner formwork 1, the vertical steel pipes 642 of the second fixed support 62 are fixedly arranged on the eaves of the bridge, and the horizontal steel pipes 641 of the second fixed support 62 form an abutting fit with the outer formwork 2, the abutting surface of the horizontal steel pipes 641 of the first fixed support 61 and the inner formwork 1 is arranged as a slope 63 matched with the inner formwork 1, the horizontal steel pipes 641 and the vertical steel pipes 642 of the first fixed support 61 form a triangular structure with the inner formwork 1, and the second fixed support 62 is additionally provided with a diagonal steel pipe 643, the horizontal steel pipes 641 and the vertical steel pipes 642 of the second fixed support 62 form a triangular structure with the outer formwork 2, and the horizontal steel pipes 641, the vertical steel pipes 642 and the diagonal steel pipe 643 also form a triangular structure, which utilizes the stability principle of the triangle to greatly improve the stability of the formwork by constructing a stable triangular support structure, so that the formwork can withstand greater pouring pressure, and the triangular design ensures the safety and quality of construction during the bridge construction process, and significantly improves the overall stability and accuracy.
[0035] With reference to Figure 1 , the inner formwork 1 is additionally provided with a plurality of square timbers 7 on one side close to the middle of the bridge, the plurality of square timbers 7 are arranged in multiple rows from the inner formwork 1 downward, any square timber 7 is longitudinally arranged on the inner formwork 1 and abuts against the inner formwork 1, and the square timbers 7 are additionally provided with a reinforcing steel pipe 8, the reinforcing steel pipe 8 is arranged on the inner formwork 1 from top to bottom and forms an acute angle of 60° with the horizontal plane, and the tension bolt 31 passes through the reinforcing steel pipe 8 to fix the reinforcing steel pipe 8 on the inner formwork 1, and the square timber 7 is located between the reinforcing steel pipe 8 and the inner formwork 1, the square timber 7 and the reinforcing steel pipe 8 on the inner formwork 1 strengthen the structural strength and rigidity of the inner formwork 1 and effectively disperse the pressure and stress in the pouring process.
[0036] With reference to Figure 1In the embodiment of the application, the horizontal steel pipe 641 of the first fixed support 61 is in abutting fit with the reinforcing steel pipe 8, and the abutting surface is the inclined surface 63 matched with the reinforcing steel pipe 8.
[0037] With reference to Figure 1 The inner formwork 1 and the outer formwork are both provided with rubber strips 9, and the rubber strips 9 are located in the pouring space 5; during the hardening of the concrete, cracks may be generated due to shrinkage and other reasons, and the setting of the rubber strips 9 can reduce the constraint stress of the formwork on the concrete to a certain extent, and reduce the risk of crack generation.
[0038] The implementation principle of the embodiment of the application is that: the clamping mechanism 3 of the embodiment firmly fixes the inner formwork 1 and the outer formwork 2 to form a stable pouring space 5, effectively ensuring the accuracy of pouring and the construction quality, and the setting of the fixing structure 6 increases the horizontal bearing capacity of the inner formwork 1 and the outer formwork 2, ensures the stability of the inner formwork 1 and the outer formwork 2 during pouring, and guarantees the linearity of the bridge.
[0039] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.
Claims
1. A formwork reinforcement device, characterized by: The utility model relates to a formwork system, including inner template (1) and outer template (2), be provided with clamping mechanism (3) between inner template (1) and outer template (2), inner template (1) and outer template (2) are clamped on the opposite two sides of the reinforcement frame through clamping mechanism (3), form pouring space (5) between inner template (1) and outer template (2), be provided with the fixed structure (6) of fixed inner template (1) and outer template (2) on inner template (1) and outer template (2).
2. A formwork reinforcement device according to claim 1, characterised in that: The fixed structure (6) includes a first fixed support (61) for fixing the inner template (1) and a second fixed support (62) for fixing the outer template (2). The first fixed support (61) is arranged in the box chamber of the bridge, and the first fixed support (61) is in abutting engagement with the inner template (1). The second fixed support (62) is fixedly arranged on the eaves of the bridge, and the second fixed support (62) is in abutting engagement with the outer template (2).
3. A formwork reinforcement device according to claim 2, wherein: The abutting surface of the first fixed support (61) and the inner template (1) is arranged as a slope (63) matched with the inner template (1). The abutting surface of the second fixed support (62) and the outer template (2) is arranged as a slope (63) matched with the outer template (2).
4. The formwork reinforcement device of claim 1, wherein: The inner template (1) and the outer template (2) are each provided with a rubber strip (9) located in the pouring space (5).
5. A formwork reinforcement device according to claim 3, wherein: The first fixed support (61) and the second fixed support (62) are each composed of a plurality of fixed steel pipes (64) fixedly connected. The plurality of fixed steel pipes (64) include horizontal steel pipes (641) and vertical steel pipes (642). The vertical steel pipes (642) of the first fixed support (61) are fixedly arranged in the box chamber of the bridge. The horizontal steel pipes (641) of the first fixed support (61) are in abutting engagement with the inner template (1). The horizontal steel pipes (641) of the second fixed support (62) are in abutting engagement with the outer template (2). The abutting surface of the horizontal steel pipes (641) of the first fixed support (61) and the inner template (1) is arranged as a slope (63) matched with the inner template (1). The horizontal steel pipes (641) and the vertical steel pipes (642) of the first fixed support (61) form a triangular structure with the inner template (1).
6. A formwork reinforcement device according to claim 5, wherein: The vertical steel pipes (642) of the second fixed support (62) are fixedly arranged on the eaves of the bridge. The abutting surface of the horizontal steel pipes (641) of the second fixed support (62) and the outer template (2) is arranged as a slope (63) matched with the outer template (2). The horizontal steel pipes (641) and the vertical steel pipes (642) of the second fixed support (62) form a triangular structure with the outer template (2).
7. The form tieback of claim 1, wherein: The clamping mechanism (3) includes a tension bolt (31) for clamping the inner template (1) and the outer template (2). The tension bolt (31) penetrates the inner template (1), the outer template (2), and the pouring space (5). The inner template (1) and the outer template (2) are fixed at both ends of the steel frame through the tension bolt (31).
8. A formwork reinforcement device according to claim 7, characterised in that: The inner template (1) is further provided with square timbers (7), the square timbers (7) are provided with a plurality of square timbers (7), the inner template (1) is further fixedly provided with a reinforcing steel pipe (8) for fixing the square timbers (7), the reinforcing steel pipe (8) is fixed on the inner template (1) through a tension bolt (31), and the square timber (7) is clamped between the reinforcing steel pipe (8) and the inner template (1).