Cast-in-place steel-concrete composite beam flange plate construction formwork structure

Abstract

The utility model relates to the technical field of steel-concrete composite beams, in particular to a cast-in-place steel-concrete composite beam flange plate construction formwork structure which comprises a flange plate framework assembly, a formwork supporting assembly and a formwork structure safety monitoring assembly. The flange plate framework assembly comprises a plurality of main framework units arranged at intervals in the longitudinal direction and longitudinal connecting rods, the adjacent main framework units are connected through the longitudinal connecting rods, and each main framework unit comprises a transverse connecting rod, an inclined connecting rod, a reinforcing supporting rod, an anchoring joint, a supporting joint and a reinforcing joint. The reinforcing supporting rod comprises a plurality of vertical supporting rods and a plurality of inclined supporting rods. According to the utility model, the overhead working time of workers is reduced, and the labor intensity is reduced; compared with the prior art, the foundation treatment and support system construction procedures are omitted, the installation procedures are few, construction is rapid, meanwhile, the anchor bolts can be detached step by step in the detaching process, and detaching is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of steel-concrete composite beams, in particular to a cast-in-place steel-concrete composite beam flange plate construction template structure. Background Art

[0002] A type of beam used in steel-concrete composite beam construction, consisting of a steel structure at the bottom and a cast-in-place concrete deck at the top. Steel-concrete composite beams are commonly used in large-span bridges. In the construction of cast-in-place steel-concrete composite beam decks, the flanges typically utilize a support system as the formwork structure. This involves preparing the foundation and then prestressing the foundation. Once the prestressing is satisfactory, the support is erected on the foundation, followed by the formwork installed on top of the support. Finally, the support and formwork system are prestressed again. Only after the prestressing is satisfactory can subsequent construction proceed. This construction method is cumbersome, time-consuming, and slow. Installation and disassembly are difficult, resulting in a low safety factor and high costs, resulting in low economic benefits. Furthermore, timber support is typically used to support the deck formwork. Because the upper slope of the timber is typically fixed, additional timber with corresponding slopes is required for various deck formwork angles, resulting in poor support suitability. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model provides a cast-in-place steel-concrete composite beam flange plate construction template structure to solve the problems of using a bracket system to support the template in the construction of the steel-concrete composite beam flange plate, slow construction progress, low safety factor, and low economic benefits.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a cast-in-place steel-concrete composite beam flange plate construction template structure, including a flange plate skeleton component, a template support component and a template structure safety monitoring component;

[0005] The flange plate frame assembly includes a plurality of main frame units and longitudinal connecting rods arranged at intervals along the longitudinal direction, and adjacent main frame units are connected by longitudinal connecting rods, the main frame units include transverse connecting rods, oblique connecting rods, reinforcement support rods, anchor nodes, support nodes and reinforcement nodes, the reinforcement support rods include a plurality of vertical support rods and a plurality of oblique support rods, a plurality of the vertical support rods and oblique support rods are staggered and arranged between the transverse connecting rods and the oblique connecting rods, the transverse connecting rods, the oblique connecting rods and the intersections of the plurality of vertical support rods and the oblique support rods are welded, the anchor nodes and support nodes are welded to the connecting rods by angle steel, the reinforcement nodes are welded to the connecting rods by steel plates, and the longitudinal connecting rods are connected to the frame units by fasteners;

[0006] A guardrail is provided on the top of the skeleton unit away from the anchoring end. The lower part of the guardrail is connected to the skeleton unit by a fastener. Anchor bolts are threadedly connected to the anchor nodes, and the anchor nodes are connected to the steel beam body through the anchor bolts.

[0007] The formwork support assembly includes a plurality of longitudinally parallel square timbers, top supports, and wedge-shaped pads. A support rod is fixed to the left side of the upper end of the square timber, and the upper end of the support rod is hinged to a support block. A guide shaft is fixed to the lower end of the support block, and a guide block is slidably sleeved on the outer periphery of the guide shaft. The lower end of the guide block is hinged to a push rod. An installation cavity is opened at the right end of the square timber, and a hydraulic cylinder is fixed in the installation cavity. The push rod slides downward through the square timber and penetrates into the installation cavity. The power end of the hydraulic cylinder is connected to the lower end of the push rod. A panel template made of bamboo plywood is provided on the top surface of the support block, and the panel template is hinged to the anchor node. The top support is provided on the bracket, and the bracket is connected to the skeleton unit with a fastener. The wedge-shaped pad is provided on the anchor node;

[0008] The template structure safety monitoring component includes rod axial force displacement sensors provided on the vertical support rods and the oblique connecting rods.

[0009] Preferably, the main skeleton units are arranged at equal intervals along the longitudinal direction, and the longitudinal interval between two adjacent main skeleton units is 100 cm.

[0010] Preferably, there is one transverse connecting rod, one oblique connecting rod, four vertical support rods, three oblique support rods, and six longitudinal connecting rods. The transverse connecting rod, the oblique connecting rod, the vertical support rod, the oblique support rod and the longitudinal connecting rod are all made of steel pipes with a diameter of 48 mm and a wall thickness of 2.5 mm.

[0011] Preferably, the square timbers are arranged at equal intervals, the interval between adjacent square timbers is 30 cm, and there are 4 square timbers in total, and the square timbers are tied to the transverse connecting rods with wire.

[0012] Preferably, the bracket is made of a φ48mm steel pipe.

[0013] Preferably, the longitudinal connecting rods are arranged at equal intervals along the transverse connecting rods and the oblique connecting rods, and the spacing between adjacent longitudinal connecting rods 14 is 50 cm.

[0014] Preferably, the guardrail is a φ48mm steel pipe, and the length of the guardrail is 200cm.

[0015] Preferably, the anchoring nodes and the supporting nodes are both 20# angle steels, and the reinforcement nodes are Q235A steel plates with a thickness of 10 mm.

[0016] The utility model provides a cast-in-place steel-concrete composite beam flange plate construction template structure, which has the following beneficial effects:

[0017] The formwork structure of the present invention is to fix the prefabricated skeleton unit on the steel main beam through high-strength bolts, which reduces the workers' high-altitude working time and reduces the labor intensity. Compared with the existing technology, the foundation treatment and the construction process of the support system are omitted, the installation process is few and the construction is fast. At the same time, it can be gradually dismantled by loosening the anchor bolts during disassembly, and the disassembly is simple. The materials used are high in strength and rigidity, and the overall stability of the formwork structure is high. During construction, deformation and stress are monitored in real time by sensors, which can timely warn of safety hazards and has a high safety factor. Each assembled component can be reused many times, is easy to obtain, and has good economic benefits. Therefore, the present invention eliminates the disadvantages of slow construction progress, low safety and high cost in previous methods, and the supporting inclined surface of the supporting block at the upper end of the square timber can be easily adjusted, which is conducive to supporting panel formwork with various inclination angles through the support block. There is no need to additionally manufacture square timber and supporting structures of other specifications, which effectively guarantees the support applicability of the support block above the square timber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure of the flange plate supporting the main skeleton unit of the utility model;

[0020] Figure 3 This is a schematic diagram of the square timber structure of the present utility model.

[0021] Figure 1-3 Middle: anchor bolt 1, anchor node 2, wedge-shaped pad 3, square timber 4, panel formwork 5, guardrail 6, top support 7, transverse connecting rod 8, reinforcement node 9, diagonal connecting rod 10, bracket 11, vertical support rod 12, diagonal support rod 13, longitudinal connecting rod 14, support node 15, rod axial force displacement sensor 16, support block 17, support rod 18, guide shaft 19, guide block 20, top rod 21, installation cavity 22, hydraulic cylinder 23. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-3The utility model provides a technical solution: a cast-in-place steel-concrete composite beam flange plate construction formwork structure, including a flange plate frame assembly, a formwork support assembly and a formwork structure safety monitoring assembly, the flange plate frame assembly includes a plurality of main frame units and longitudinal connecting rods 14 arranged at intervals along the longitudinal direction, adjacent main frame units are connected by longitudinal connecting rods 14, the main frame unit includes a transverse connecting rod 8, an oblique connecting rod 10, a reinforcement support rod, an anchor node 2, a support node 15 and a reinforcement node 9, the reinforcement support rod includes a plurality of vertical support rods 12 and a plurality of oblique support rods 13, a plurality of the vertical support rods 12 and the oblique support rods 13 3 are staggered between the transverse connecting rods 8 and the oblique connecting rods 10, and the intersections of the transverse connecting rods 8, the oblique connecting rods 10 and the multiple vertical braces 12 and the oblique braces 13 are welded. The anchor nodes 2 and the support nodes 15 are welded to the connecting rods through angle steels, and the reinforcement nodes 9 are welded to the connecting rods through steel plates. The longitudinal connecting rods 14 are connected to the skeleton unit through fasteners. A guardrail 6 is provided on the top of the skeleton unit away from the anchor end. The lower part of the guardrail 6 is connected to the skeleton unit with a fastener. An anchor bolt 1 is threadedly connected to the anchor node 2, and the anchor node 2 is fastened by the anchor bolt 1. Connected to the main body of the steel beam, the template structure safety monitoring component includes a rod axial force displacement sensor 16 on the vertical support rod 12 and the oblique connecting rod 10, the main skeleton unit is arranged at equal intervals along the longitudinal direction, and the longitudinal spacing between two adjacent main skeleton units is 100 cm, the transverse connecting rod 8 is provided with 1, the oblique connecting rod 10 is provided with 1, the vertical support rod 12 is provided with 4, the oblique support rod 13 is provided with 3, and the longitudinal connecting rod 14 is provided with 6. The transverse connecting rod 8, the oblique connecting rod 10, the vertical support rod 12, the oblique support rod 13 and the longitudinal connecting rod 14 are all made of φ48mm and a wall thickness of 2 .5mm steel pipe, the square timber 4 is arranged at equal intervals, the spacing between adjacent square timbers 4 is 30cm, and there are 4 square timbers 4 in total, the square timber 4 is tied to the transverse connecting rod 8 with wire, the bracket 11 is made of φ48mm steel pipe, the longitudinal connecting rod 14 is arranged at equal intervals along the transverse connecting rod 9 and the oblique connecting rod 10, and the spacing between adjacent longitudinal connecting rods 14 is 50cm, the guardrail 6 is φ48mm steel pipe, and the length of the guardrail 6 is 200cm, the anchoring node 2 and the support node 15 are both 20# angle steel, the reinforcement node 9 is Q235A steel plate, and its thickness is 10mm.

[0024] The flange plate frame fabrication process is as follows: First, weld the transverse connecting rods 8, the diagonal connecting rods 10, and the longest vertical brace 12. Then, alternately weld the remaining vertical braces 12 and diagonal braces 13 at equal intervals between the transverse connecting rods 8 and the diagonal connecting rods 10 to reinforce the frame structure, ensuring the overall stability of the frame structure. After welding, ensure that all members are in the same plane. Finally, weld a piece of 20# angle steel on each side of the steel pipe at the frame's anchor node 2 and support node 15. At the reinforcement node 9, weld a steel plate on both sides of the steel pipe for reinforcement.

[0025] During use, the flange plate frame is first hoisted to the construction site one by one as a whole, and is connected and fixed to the steel beam body by anchor bolts 1. Then, the top support 7 is connected to the frame through fasteners, and then the square wood 4 and wedge-shaped pads 3 are installed. The formwork panel 5 is installed on the top surface of the square wood 4, and finally the railing 6 is connected to the frame through fasteners. During the construction process, by analyzing the data of the rod axial force displacement sensor 16, it is possible to warn of safety hazards of the formwork structure in advance and reduce the risk of accidents during operation. After the construction is completed, the formwork structure can be gradually dismantled by loosening the anchor bolts 1. In summary, the formwork structure of the present invention is easy to assemble and disassemble because the supporting frame is prefabricated as a whole and then installed and fixed. When the concrete pouring of the flange plate of the steel-concrete composite beam is completed and the formwork disassembly condition is met, the formwork structure has few steps and is fast to construct. The materials used are high in strength, high in rigidity and easy to obtain. The overall stability of the structure is high. During construction, the deformation and stress changes are monitored in real time by sensors, and the safety factor is high. At the same time, it can be reused many times, eliminating the disadvantages of slow construction progress, low safety and high cost in previous methods.

[0026] In this embodiment, the formwork support assembly includes multiple longitudinally parallel square timbers 4, top supports 7, and wedge-shaped pads 3. A support rod 18 is fixed to the left side of the upper end of the square timber 4, and the upper end of the support rod 18 is hinged to a support block 17. The lower end of the support block 17 is fixed with a guide shaft 19. The outer periphery of the guide shaft 19 is slidably sleeved with a guide block 20, and the lower end of the guide block 20 is hinged to a push rod 21. The right end of the square timber 4 is provided with an installation cavity 22, and a hydraulic cylinder 23 is fixed in the installation cavity 22. The push rod 21 slides downward through the square timber 4 and passes through the installation cavity 22. The power end of the hydraulic cylinder 23 is connected to the lower end of the push rod 21. The top surface of the support block 17 is provided with a panel formwork 5 made of bamboo plywood, and the panel formwork 5 is hinged to the anchor node 2. The top support 7 is provided on the bracket 11, and the bracket 11 is connected to the skeleton unit with fasteners. The wedge-shaped pad 3 is provided on the anchor node 2.

[0027] When the support block 17 on the square timber 4 supports the panel formwork 5, the supporting inclined surface of the support block 17 can be adjusted according to the inclination angle of the panel formwork 5. Therefore, the extension and contraction of the hydraulic cylinder 23 drives the push rod 21 and the guide block 20 to move up and down. During this process, the guide block 20 will slide along the guide shaft 19. Since the guide block 20 is hinged to the push rod 21 and the left side of the lower end of the support block 17 is supported by the support rod 18, the guide block 20 will pull the guide shaft 19 and the support block 17 when sliding along the guide shaft 19. At this time, the support block 17 will tilt with the support rod 18 as the fulcrum, which is conducive to conveniently adjusting the angle of the supporting inclined surface of the support block 17. Therefore, the supporting inclined surface of the support block 17 at the upper end of the square timber 4 can be easily adjusted, which is conducive to supporting panel formwork 5 with various inclination angles through the support block 17. There is no need to additionally manufacture square timber 4 and supporting structures of other specifications, which effectively ensures the support applicability of the support block 17 above the square timber 4.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cast-in-place steel-concrete composite beam flange plate construction formwork structure, comprising a flange plate skeleton assembly, a formwork support assembly, and a formwork structure safety monitoring assembly, characterized in that: The flange plate frame assembly includes a plurality of main frame units and longitudinal connecting rods (14) arranged at intervals along the longitudinal direction, and adjacent main frame units are connected by the longitudinal connecting rods (14). The main frame unit includes a transverse connecting rod (8), an oblique connecting rod (10), a reinforcement support rod, an anchoring node (2), a support node (15) and a reinforcement node (9). The reinforcement support rod includes a plurality of vertical support rods (12) and a plurality of oblique support rods (13). The plurality of vertical support rods (12) and oblique support rods (13) are arranged at intervals and staggered between the transverse connecting rods (8) and the oblique connecting rods (10). The transverse connecting rods (8), the oblique connecting rods (10) and the plurality of vertical support rods (12) and the oblique support rods (13) are welded at the intersection. The anchoring node (2) and the support node (15) are welded to the connecting rods by angle steel. The reinforcement node (9) is welded to the connecting rods by steel plates. The longitudinal connecting rods (14) are connected to the frame unit by fasteners. A guardrail (6) is provided on the top of the skeleton unit away from the anchoring end, the lower portion of the guardrail (6) is connected to the skeleton unit by a fastener, an anchor bolt (1) is threadedly connected to the anchor node (2), and the anchor node (2) is connected to the steel beam body via the anchor bolt (1); The template support assembly includes a plurality of longitudinally parallel square timbers (4), a top support (7), and a wedge-shaped pad (3). A support rod (18) is fixed to the left side of the upper end of each square timber (4). The upper end of each support rod (18) is hinged to a support block (17). The lower end of each support block (17) is fixed to a guide shaft (19). The outer periphery of each guide shaft (19) is slidably sleeved with a guide block (20). The lower end of each guide block (20) is hinged to a top rod (21). An installation cavity (22) is opened at the right end of each square timber (4). A hydraulic cylinder (23) is fixed in each cavity (22), and the push rods (21) are all slid downward through the square wood (4) to penetrate into the installation cavity (22). The power end of the hydraulic cylinder (23) is connected to the lower end of the push rod (21). The top surface of the support block (17) is provided with a panel template (5) made of bamboo plywood, and the panel template (5) is hinged to the anchor node (2). The top support (7) is provided on the support seat (11), and the support seat (11) is connected to the skeleton unit by fasteners. The wedge-shaped pad (3) is provided on the anchor node (2); The template structure safety monitoring assembly includes a rod axial force displacement sensor (16) provided on a vertical support rod (12) and an oblique connecting rod (10).

2. The cast-in-situ steel-concrete composite beam flange plate construction template structure according to claim 1, characterized in that: The main skeleton units are arranged at equal intervals along the longitudinal direction, and the longitudinal interval between two adjacent main skeleton units is 100 cm.

3. The cast-in-situ steel-concrete composite beam flange plate construction formwork structure according to claim 1, characterized in that: The transverse connecting rod (8) is provided with one, the oblique connecting rod (10) is provided with one, the vertical support rods (12) are provided with four, the oblique support rods (13) are provided with three, and the longitudinal connecting rods (14) are provided with six. The transverse connecting rod (8), the oblique connecting rod (10), the vertical support rod (12), the oblique support rod (13) and the longitudinal connecting rod (14) are all made of steel pipes with a diameter of 48 mm and a wall thickness of 2.5 mm.

4. The cast-in-situ steel-concrete composite beam flange plate construction template structure according to claim 1, characterized in that: The square timbers (4) are arranged at equal intervals, the interval between adjacent square timbers (4) is 30 cm, and there are a total of four square timbers (4). The square timbers (4) are tied to the transverse connecting rods (8) using iron wires.

5. The cast-in-situ steel-concrete composite beam flange plate construction formwork structure according to claim 1, characterized in that: The bracket (11) is made of a φ48mm steel pipe.

6. The cast-in-situ steel-concrete composite beam flange plate construction template structure according to claim 1, characterized in that: The longitudinal connecting rods (14) are arranged at equal intervals along the transverse connecting rods (8) and the oblique connecting rods (10), and the spacing between adjacent longitudinal connecting rods (14) is 50 cm.

7. The cast-in-situ steel-concrete composite beam flange plate construction formwork structure according to claim 1, characterized in that: The guardrail (6) is a φ48mm steel pipe, and the length of the guardrail (6) is 200cm.

8. The cast-in-situ steel-concrete composite beam flange plate construction formwork structure according to claim 1, characterized in that: The anchoring node (2) and the supporting node (15) are both 20# angle steels, and the reinforcing node (9) is a Q235A steel plate with a thickness of 10 mm.

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