Adjustable large-span concrete beam bottom camber support structure and device

Abstract

The utility model relates to a kind of adjustable large-span concrete beam bottom camber support structure and device, support structure includes solid square steel, first adjusting nut piece, beam bottom support plate, adjusting screw rod and support rod group, multiple through holes are set up on the solid square steel, multiple through holes are arranged on the opposite sides of the solid square steel, the side surface of beam bottom support plate is vertically fixed with multiple adjusting screw rods, multiple adjusting screw rods are one-to-one corresponding and are arranged in multiple through holes, first adjusting nut piece is threadedly connected on multiple adjusting screw rods, first adjusting nut piece is located between the beam bottom support plate and the solid square steel and can be supported on the solid square steel;The upper end of support rod group is supported on the solid square steel, and the lower end of support rod group is supported on ground.The utility model can solve the problem that large-span beam construction is poor in safety and stability due to filling wedge and batten, to ensure that large-span beam meets the design specification requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of construction of large-span concrete beams, specifically to an adjustable arch support structure and device for the bottom of a large-span concrete beam. Background Technology

[0002] Currently, large-span buildings and beams are becoming increasingly common, with some large-span beams requiring a pre-camber of 150mm. This places higher demands on the pre-camber and design camber of the formwork for large-span beams. At present, the support system for large-span beam formwork typically uses a disc-lock scaffolding system. When installing the bottom formwork of large-span beams, pre-cambering according to specifications is necessary to ensure that the deflection of the large-span concrete beam meets the specifications after the formwork support is removed. Traditionally, the pre-camber of large-span beams is achieved by adjusting the height of the small horizontal bars at the bottom of the beam and inserting wooden wedges and timber between the bottom of the beam and the small horizontal bars. However, in some cases, the position of the small horizontal bars at the bottom of the beam conflicts with the connecting plate of the disc-lock scaffolding, necessitating adjustment of the small horizontal bars below the connecting plate to connect with the uprights. This results in a greater height difference between the small horizontal bars and the bottom of the beam, requiring more wooden wedges and timber, which negatively impacts the stability and pre-camber height during the construction of the large-span beam. Utility Model Content

[0003] In order to solve one or more technical problems existing in the prior art, this utility model provides an adjustable arching support structure and device for the bottom of a large-span concrete beam.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: This utility model provides an adjustable arched support structure for the bottom of a large-span concrete beam, including a solid square steel, a first adjusting nut plate, a beam bottom support plate, adjusting screws, and a support rod assembly. The solid square steel has multiple through holes that pass through opposite sides of the solid square steel. Multiple adjusting screws are vertically fixed to one side of the beam bottom support plate, and each adjusting screw is correspondingly inserted into one of the through holes. A first adjusting nut plate is threaded onto each adjusting screw plate. The first adjusting nut plate is located between the beam bottom support plate and the solid square steel and can be supported on the solid square steel. The upper end of the support rod assembly is supported on the solid square steel, and the lower end of the support rod assembly is supported on the ground.

[0005] The beneficial effects of this utility model are as follows: This utility model provides an adjustable arching support structure for the bottom of a large-span concrete beam. By setting multiple adjusting screws and adjusting the height of the adjusting screws extending out of the solid square steel through the first adjusting nut plate connected to them, the height of the bottom support plate of the beam can be adjusted, thereby adjusting the construction pre-camber height of the large-span beam. This improves the forming quality of the large-span concrete beam and ensures that the deflection deformation of the concrete beam after demolding is within the allowable range of the specifications, thus guaranteeing the structural safety and construction quality of the project. It can solve the problems of poor safety and stability of large-span beams due to the filling of wooden wedges and timber during construction, the failure to meet construction requirements for the pre-camber height, and the failure to meet design requirements for the deflection deformation of large-span beams after demolding, ensuring that the large-span beam meets the design specifications.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, insertion slots are respectively provided on both end faces of the solid square steel, and connecting steel pipes are coaxially inserted and fixed in the insertion slots.

[0008] The beneficial effects of adopting the above-mentioned further solution are: by setting insertion grooves on both ends of the solid square steel, it is convenient to insert and fix the solid square steel and the connecting steel pipe, and the connecting steel pipe is convenient to be connected and fixed with the steel pipe support frame.

[0009] Furthermore, the first adjusting nut piece is circular, and the diameter of the first adjusting nut piece is greater than the side width of the solid square steel.

[0010] Furthermore, an operating protrusion is integrally connected to the peripheral edge of the first adjusting nut piece, and there are two operating protrusions arranged opposite each other along the radial direction of the first adjusting nut piece.

[0011] The beneficial effect of adopting the above-mentioned further solution is that by setting an operating protrusion on the first adjusting nut plate, it is convenient to operate the rotation of the first adjusting nut plate.

[0012] Furthermore, the length of the beam bottom support plate is not less than the length of the solid square steel.

[0013] Furthermore, the support rod assembly includes a U-shaped bracket, a support screw, and a support steel pipe. The upper end of the support screw is fixed to the U-shaped bracket, the solid square steel is placed inside the U-shaped bracket and extends out from the open ends of the U-shaped bracket, the upper end of the support screw is fixedly connected to the bottom wall of the U-shaped bracket, and the lower end of the support screw is inserted into the support steel pipe.

[0014] The beneficial effect of adopting the above-mentioned further solution is that by setting up U-shaped brackets, supporting screws and supporting steel pipes, it is convenient to provide stable support for solid square steel.

[0015] Furthermore, a second adjusting nut is threaded onto the support screw, the second adjusting nut being supported and overlapped at the upper end of the support steel pipe, and the support screw being movably inserted into the support steel pipe.

[0016] The beneficial effect of adopting the above-mentioned further solution is that by setting a second adjusting nut piece, the height of the support screw can be easily adjusted, and the support height of the U-shaped bracket can be adjusted.

[0017] Furthermore, the bottom of the solid square steel is supported by at least two sets of support rods.

[0018] The beneficial effect of adopting the above-mentioned further solution is that by supporting the bottom of the solid square steel with at least two support rod groups, the support effect of the solid square steel can be more stable and reliable.

[0019] This utility model also provides an adjustable arching support device for the bottom of a large-span concrete beam, including multiple adjustable arching support structures for the bottom of a large-span concrete beam as described above, and a steel pipe support frame. The multiple adjustable arching support structures for the bottom of a large-span concrete beam are arranged side by side at intervals and connected to the steel pipe support frame.

[0020] The beneficial effects of this utility model are: the support device of this utility model can achieve stable support for large-span beams, accurately adjust the construction pre-camber and the camber height of the design pre-camber of the large-span beams, improve the forming quality of large-span concrete beams and ensure that the deflection deformation of the concrete beams is within the allowable range of the specifications after demolding, thus ensuring the safety of the engineering structure and the construction quality.

[0021] Furthermore, longitudinal steel pipes are provided on the bottom support plates of the adjustable large-span concrete beam bottom arching support structure, and the multiple bottom support plates are arranged parallel to each other and spaced apart, with the longitudinal steel pipes arranged perpendicular to the bottom support plates.

[0022] The beneficial effect of adopting the above-mentioned further scheme is that by setting longitudinal steel pipes, it is convenient to further support the bottom of the large-span beam. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the adjustable large-span concrete beam bottom arching support structure of this utility model. Figure 2 This is a schematic diagram of the main structure of the adjustable large-span concrete beam bottom arching support structure of this utility model. Figure 3 This is a front view structural diagram of the adjustable large-span concrete beam bottom arching support device of this utility model in use.

[0024] The attached diagram lists the components represented by each number as follows: 1. Solid square steel; 2. First adjusting nut plate; 3. Beam bottom support plate; 4. Adjusting screw; 5. Connecting steel pipe; 6. Operating handle; 7. U-shaped support; 8. Support screw; 9. Supporting steel pipe; 10. Longitudinal steel pipe; 11. Steel pipe support frame; 12. Second adjusting nut plate; 13. Concrete beam. Detailed Implementation

[0025] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0026] Example 1 like Figures 1-3 As shown in the figure, an adjustable large-span concrete beam bottom arching support structure of this embodiment includes a solid square steel 1, a first adjusting nut plate 2, a beam bottom support plate 3, adjusting screws 4, and a support rod assembly. The solid square steel 1 has multiple through holes, which are arranged through opposite sides of the solid square steel 1. Multiple adjusting screws 4 are vertically fixed on one side of the beam bottom support plate 3. The multiple adjusting screws 4 are correspondingly inserted into the multiple through holes. The first adjusting nut plate 2 is threaded onto each of the multiple adjusting screws 4. The first adjusting nut plate 2 is located between the beam bottom support plate 3 and the solid square steel 1 and can be supported on the solid square steel 1. The upper end of the support rod assembly is supported on the solid square steel 1, and the lower end of the support rod assembly is supported on the ground.

[0027] like Figure 1 and Figure 2 As shown, in a preferred embodiment, the solid square steel 1 has insertion slots on both end faces, and a connecting steel pipe 5 is coaxially inserted and fixed in the insertion slots. By providing insertion slots on both end faces of the solid square steel, it is convenient to insert and fix the solid square steel and the connecting steel pipe, and the connecting steel pipe is convenient to be connected and fixed to the steel pipe support frame.

[0028] like Figure 1 and Figure 2 As shown, in one specific embodiment, the first adjusting nut piece 2 is circular, and the diameter of the first adjusting nut piece 2 is greater than the side width of the solid square steel 1.

[0029] Furthermore, such as Figure 1 As shown, an operating protrusion 6 is integrally connected to the peripheral edge of the first adjusting nut plate 2. There are two operating protrusions 6, which are arranged opposite each other along the radial direction of the first adjusting nut plate 2. By providing operating protrusions on the first adjusting nut plate, it is convenient to rotate the first adjusting nut plate.

[0030] like Figure 1 and Figure 2As shown, in this embodiment, the length of the beam bottom support plate 3 is not less than the length of the solid square steel 1.

[0031] In this embodiment, the solid square steel 1 can adopt a structural specification of 70mm*70mm, and the length can be set as needed. The connecting steel pipe 5 can adopt a structural specification of Φ48mm*3.6mm, the adjusting screw 4 can adopt a hollow screw with a diameter of 32mm, and the thickness of the beam bottom support plate 3 can be 30mm. The connecting steel pipe can be a commonly available Q235 carbon structural steel pipe, used to connect with the uprights on both sides of the large-span beam using fasteners. The solid square steel is a commonly available Q235 solid square steel, with four Φ35mm holes drilled in the middle of the solid square steel to accommodate the Φ32mm adjusting screw. The adjusting screw is a commonly available Q355 hollow screw, used to support the beam bottom support plate at the top of the adjusting screw. The first adjusting nut piece 2 is mainly used to adjust the extension length of the adjusting screw to ensure the accuracy of the pre-camber height during the construction of the large-span beam. The bottom support plate of the beam is a common Q235 steel plate, and its main function is to distribute the load of the large-span concrete beam downward to the bottom support of the beam.

[0032] This embodiment presents an adjustable camber support structure for large-span concrete beams. By using multiple adjusting screws and connecting them to a first adjusting nut, the height of the adjusting screws extending beyond the solid square steel can be adjusted. This allows for adjustment of the beam bottom support plate, thereby adjusting the pre-camber height of the large-span beam. This improves the forming quality of the large-span concrete beam and ensures that the deflection deformation of the concrete beam after demolding remains within the allowable range specified in the standards, thus guaranteeing structural safety and construction quality. It solves the problems of poor safety and stability of large-span beams due to the use of wooden wedges and timber during construction, insufficient pre-camber height, and deflection deformation after demolding that does not meet design requirements, ensuring that the large-span beam meets design specifications.

[0033] Example 2 Based on Embodiment 1, this embodiment provides a preferred structure for a support rod assembly. For example... Figure 3 As shown, the support rod assembly includes a U-shaped bracket 7, a support screw 8, and a support steel pipe 9. The upper end of the support screw 8 is fixed to the U-shaped bracket 7. The solid square steel 1 is placed inside the U-shaped bracket 7 and extends from the open ends of the U-shaped bracket 7. The upper end of the support screw 8 is fixedly connected to the bottom wall of the U-shaped bracket 7, and the lower end of the support screw 8 is inserted into the support steel pipe 9. By setting up the U-shaped bracket, support screw, and support steel pipe, the solid square steel can be stably supported.

[0034] like Figure 3As shown, in a preferred embodiment, a second adjusting nut 12 is threadedly connected to the supporting screw 8. The second adjusting nut 12 supports and overlaps the upper end of the supporting steel pipe 9, and the supporting screw 8 is movably inserted into the supporting steel pipe 9. By providing the second adjusting nut, the height of the supporting screw can be easily adjusted, thereby adjusting the support height of the U-shaped bracket.

[0035] like Figure 3 As shown, specifically, the bottom of the solid square steel 1 is supported by at least two sets of support rods. By supporting the bottom of the solid square steel with at least two sets of support rods, the support effect of the solid square steel can be more stable and reliable.

[0036] Example 3 This embodiment provides an adjustable arching support device for the bottom of a large-span concrete beam, including multiple adjustable arching support structures for the bottom of a large-span concrete beam as described in Embodiment 1 or Embodiment 2 above, and also includes a steel pipe support frame 11. The multiple adjustable arching support structures for the bottom of a large-span concrete beam are arranged side by side at intervals and connected to the steel pipe support frame 11.

[0037] like Figure 3 As shown in this embodiment, longitudinal steel pipes 10 are provided on the bottom support plates 3 of the adjustable large-span concrete beam bottom arching support structure. The multiple bottom support plates 3 are arranged parallel to each other and spaced apart, with the longitudinal steel pipes 10 arranged perpendicular to the bottom support plates 3. Multiple longitudinal steel pipes 10 are provided and extend along the length of the concrete beam 13, supporting the bottom surface of the concrete beam 13. By providing longitudinal steel pipes, it is convenient to further support the bottom of the large-span beam.

[0038] Specifically, such as Figures 1-3 As shown, the connecting steel pipe 5 can be used as part of the steel pipe support frame 11 and connected to the steel pipe support frame 11. When the connecting steel pipe 5 is connected to the steel pipe support frame 11, the upper and lower surfaces of the solid square steel 1 are arranged horizontally, and the adjusting screw 4 is arranged vertically.

[0039] In this embodiment, the support device is used to determine the pre-camber and design pre-camber of the large-span beam according to the drawings and construction specifications. A steel pipe support frame is erected at the bottom of the beam according to the formwork support frame construction plan, and solid square steel, adjusting screws, and a beam bottom support plate are installed. The first adjusting nut is rotated to adjust the length of the adjusting screw until the requirements of the pre-camber and design pre-camber of the beam bottom are met. After the large-span concrete beam construction is completed and reaches the design strength, the first adjusting nut is rotated to lower the length of the adjusting screw, and the steel pipe support frame at the bottom of the beam is removed.

[0040] The support device in this embodiment can provide stable support for large-span beams, accurately adjust the construction camber and the camber height of the design camber of the large-span beams, improve the forming quality of large-span concrete beams, and ensure that the deflection deformation of the concrete beams is within the allowable range of the specifications after demolding, thereby ensuring the safety of the engineering structure and the construction quality.

[0041] In the description of this utility model, it should be understood that the terms "longitudinal", "length", "width", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An adjustable arched support structure for the bottom of a large-span concrete beam, characterized in that, The system includes a solid square steel bar, a first adjusting nut plate, a beam bottom support plate, adjusting screws, and a support rod assembly. The solid square steel bar has multiple through holes that extend through opposite sides. Multiple adjusting screws are vertically fixed to one side of the beam bottom support plate, each screw corresponding to one of the through holes. A first adjusting nut plate is threaded onto each adjusting screw plate. The first adjusting nut plate is located between the beam bottom support plate and the solid square steel bar and is supported on the solid square steel bar. The upper end of the support rod assembly is supported on the solid square steel bar, and the lower end of the support rod assembly is supported on the ground.

2. The adjustable large-span concrete beam bottom arching support structure according to claim 1, characterized in that, The solid square steel is provided with insertion slots on both ends, and connecting steel pipes are coaxially inserted and fixed in the insertion slots.

3. The adjustable large-span concrete beam bottom arching support structure according to claim 1, characterized in that, The first adjusting nut piece is circular, and the diameter of the first adjusting nut piece is greater than the side width of the solid square steel.

4. The adjustable large-span concrete beam bottom arching support structure according to claim 1, characterized in that, The first adjusting nut piece has an integrally connected operating protrusion on its peripheral edge. There are two operating protrusions, which are arranged opposite each other along the radial direction of the first adjusting nut piece.

5. The adjustable large-span concrete beam bottom arching support structure according to claim 1, characterized in that, The length of the bottom support plate of the beam is not less than the length of the solid square steel.

6. The adjustable large-span concrete beam bottom arching support structure according to claim 1, characterized in that, The support rod assembly includes a U-shaped bracket, a support screw, and a support steel pipe. The upper end of the support screw is fixed to the U-shaped bracket. The solid square steel is placed inside the U-shaped bracket and extends from the open ends of the U-shaped bracket. The upper end of the support screw is fixedly connected to the bottom wall of the U-shaped bracket, and the lower end of the support screw is inserted into the support steel pipe.

7. The adjustable large-span concrete beam bottom arching support structure according to claim 6, characterized in that, A second adjusting nut is threaded onto the support screw, and the second adjusting nut supports and overlaps the upper end of the support steel pipe. The support screw is movably inserted into the support steel pipe.

8. The adjustable large-span concrete beam bottom arching support structure according to claim 1, characterized in that, The solid square steel is supported at the bottom by at least two sets of support rods.

9. An adjustable arching support device for the bottom of a large-span concrete beam, characterized in that, The invention includes an adjustable large-span concrete beam bottom arching support structure as described in any one of claims 1 to 8, and further includes a steel pipe support frame. The multiple adjustable large-span concrete beam bottom arching support structures are arranged side by side at intervals and connected to the steel pipe support frame.

10. The adjustable large-span concrete beam bottom arching support device according to claim 9, characterized in that, The adjustable large-span concrete beam bottom arching support structure has longitudinal steel pipes on its bottom support plates. The multiple bottom support plates are arranged parallel to each other and spaced apart, and the longitudinal steel pipes are arranged perpendicular to the bottom support plates.

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