Concrete box girder reinforcing structure
By adding connecting plates on the inner side of the column and setting inclined partitions inside the beam body, combined with the method of setting up reinforcement rods in the casting cavity, the problem of concentrated shear force and bending moment when the box beam is connected to the column is solved, and the stability and load-bearing capacity of the structure are improved.
Patent Information
- Application Number
- CN202421489530.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-27
AI Technical Summary
When the box girder is connected to the column, due to the increase in the weight of the concrete, the maximum shear force and bending moment at both ends of the beam body are concentrated, affecting the stability and bearing capacity of the structure.
The beam body is mounted by adding connecting plates inside the column, and an inclined partition is provided inside the beam body to disperse the bending force. At the same time, reinforcement rods are provided in the casting cavity to form an anchoring and embedding effect, improving the stability and bearing capacity of the overall structure.
It effectively improves the stability and bearing capacity of the structure, reduces the bending moment at the node, and prevents structural damage caused by local stress concentration.
Smart Images
Figure CN222879288U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of box beams, in particular to a concrete box beam reinforcement structure. Background Art
[0002] The cross-sectional shape of the box beam is the same as that of a normal box, so it is called a box beam. It is generally composed of a cover plate, a web plate, a bottom plate, and a partition. The two ends of the box-shaped steel beam generally need to be rigidly connected to the columns. Concrete generally needs to be poured inside the steel beam to ensure that the connection between the steel beam and the column is an integral force-bearing structure. The concrete in the box beam will increase the weight of the box beam. Generally, the weight of concrete is much greater than the weight of the steel beam body. The weight of the steel box beam is entirely borne at the connection between the box beam and the column, so that the maximum shear force and bending moment of the box beam are located at both ends of the box-shaped steel beam, and most of the weight is borne by the web plate and the compressed lower flange at both ends of the steel beam, resulting in shear and compression deformation of the box beam. This deformation will affect the stability of the cross-section at both ends of the steel beam. Therefore, a reinforcement structure is needed to solve the above problems.
[0003] Based on this, the utility model designs a concrete box beam reinforcement structure to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a concrete box beam reinforcement structure, which can be used to mount the beam body by adding additional connecting plates on the inner side of the column, thereby improving the structural stability and bearing capacity. An inclined partition is also set inside the beam body, which can effectively disperse and transmit the bending force borne by the beam, and transmit the force to the column more evenly. The upper end is inclined inward, which increases the force on the vertical side connecting plate, reduces the shear force borne by the horizontal plane receiving plate, and effectively reduces the bending moment generated at the node. A reinforcement rod is also set in the casting cavity, and an anchoring pre-embedded effect is formed by the reinforcement rod and the concrete in the casting cavity, thereby improving the integrity of the beam body and the connecting plate, so that the concrete in the casting cavity and the connecting plate form an integral reinforcement block, effectively preventing structural damage caused by local stress concentration.
[0005] The utility model is implemented as follows: a concrete box beam reinforcement structure, comprising:
[0006] Connecting plates, beams, casting frames and columns;
[0007] The connecting plate is a flat plate, and a plurality of positioning pins and a plurality of reinforcing rods are arranged on the connecting plate. The connecting plate is locked on the vertical side wall of the column through the plurality of positioning pins; the plurality of reinforcing rods are horizontally locked on the inner side of the connecting plate;
[0008] The beam body is a box beam with a hollow interior, and the left and right ends of the beam body are open. An inclined partition is provided on each of the left and right sides of the interior of the beam body. The upper ends of the inclined partitions on the left and right sides of the beam body are inclined inwards, and the inclined partitions on both sides are isolated from the inner wall of the beam body to form a closed cavity;
[0009] The bottom flat plate of the beam body outside the inclined partition is a receiving plate, the top of the inner cavity of the beam body is mounted on the top of the connecting plate, and the outer side of the receiving plate is against the inner wall of the connecting plate; the receiving plate, the inclined partition and the top plate of the beam body form a closed hollow casting cavity;
[0010] The casting frame is a circular ring, and the inner hole of the casting frame is a casting hole. A casting frame is arranged at each of the left and right ends of the top of the beam body. The casting frames at both ends are respectively arranged directly above the casting cavities at the left and right ends, and the casting holes are connected with the inner cavity of the casting cavity.
[0011] Furthermore, a column is respectively arranged at the left and right ends of the beam body, and the beam body is stably mounted on the column through a connecting plate.
[0012] Furthermore, the oblique partition and the beam body form a trapezoidal cavity that is narrow at the top and wide at the bottom;
[0013] The casting cavity is isolated outside the inclined partition plate.
[0014] Furthermore, the diameter of the casting hole is not less than 30 cm.
[0015] Further, the plurality of positioning pins extend horizontally outside the connecting plate, and the plurality of positioning pins are arranged in a rectangular row on the connecting plate, the positioning pins are countersunk screws, the nail heads of the positioning pins are locked inside the connecting plate, and the nail tips of the positioning pins are locked inside the column;
[0016] A plurality of the reinforcing rods extend horizontally from the inner side of the connecting plate, and the plurality of the reinforcing rods are arranged in a rectangular shape on the connecting plate, and the reinforcing rods are screw rods;
[0017] The length of the reinforcement rod is not less than 10 cm.
[0018] The beneficial effects of the utility model are as follows: 1. The beam body is mounted by means of an additional connecting plate added inside the column, and the connecting plate and the column are locked into an integral force-bearing structure by means of positioning nails. The mounting points of the beam body are strengthened by means of the connecting plate, so that the structural strength of the column is higher, thereby improving the stability and bearing capacity of the overall structure of the column;
[0019] 2. An inclined partition is set inside the beam body, which can effectively disperse and transfer the bending force borne by the beam and form a reinforcing rib structure. It not only strengthens the structural strength of the cavity inside the beam body, but also transfers the force to the column more evenly. The upper end is inclined inward, thereby increasing the load force on the vertical connecting plate on the side, reducing the shear force borne by the horizontal plane receiving plate, and effectively reducing the bending moment generated by the beam body at the node;
[0020] 3. A pouring frame is added to the top of the beam for reinforcement, which effectively avoids deformation of the pouring hole due to the solidification of the poured concrete. It is no longer necessary to weld additional steel plates at the pouring hole, which simplifies the construction steps and improves the construction efficiency.
[0021] 4. Reinforcement rods are set in the casting cavity. The reinforcement rods and the concrete in the casting cavity solidify to form an anchoring pre-embedded effect, so that the concrete in the casting cavity and the connecting plate form an integral reinforcement block. The concrete in the casting cavity forms an integral structure through the reinforcement rods and the connecting plate, which improves the integrity of the beam body, the connecting plate and the column, and effectively prevents structural damage caused by local stress concentration. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.
[0023] Figure 1 This is a schematic diagram of the structure of the utility model in a disassembled state of the beam and the column;
[0024] Figure 2 This is a schematic diagram of the structure of the utility model in an assembled state;
[0025] Figure 3 It is a structural schematic diagram of one end of the beam body of the utility model.
[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0027] 1-connecting plate, 11-positioning nail, 12-reinforcement rod, 2-beam body, 21-inclined partition, 22-receiving plate, 23-casting cavity, 3-casting frame, 31-casting hole, 4-column. DETAILED DESCRIPTION
[0028] See also Figures 1 to 3 As shown, the utility model provides a concrete box beam reinforcement structure. In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings in the specification and specific implementation methods.
[0029] In a specific embodiment of the technical solution of the utility model:
[0030] It includes a connecting plate 1, a beam body 2, a casting frame 3 and a column 4;
[0031] The connecting plate 1 is a flat plate, and a plurality of positioning pins 11 and a plurality of reinforcing rods 12 are arranged on the connecting plate 1. The connecting plate 1 is locked on the vertical side wall of the column 4 through the plurality of positioning pins 11; and the plurality of reinforcing rods 12 are horizontally locked on the inner side of the connecting plate 1;
[0032] A plurality of positioning pins 11 extend horizontally outside the connecting plate 1, and the plurality of positioning pins 11 are arranged in a rectangular row on the connecting plate 1. The positioning pins 11 are countersunk screws, the nail heads of the positioning pins 11 are locked inside the connecting plate 1, and the nail tips of the positioning pins 11 are locked inside the column 4;
[0033] A plurality of reinforcing rods 12 extend horizontally from the inner side of the connecting plate 1, and the plurality of reinforcing rods 12 are distributed on the connecting plate 1 in a rectangular row, and the reinforcing rods 12 are screw rods;
[0034] The length of the reinforcement rod 12 is not less than 10 cm.
[0035] The beam body 2 is a box beam with a hollow interior, and the left and right ends of the beam body 2 are open.
[0036] A column 4 is respectively arranged at the left and right ends of the beam body 2, and the beam body 2 is stably mounted on the column 4 through the connecting plate 1.
[0037] An inclined partition 21 is also provided on each of the left and right sides of the interior of the beam body 2. The upper ends of the inclined partitions 21 on the left and right sides of the beam body 2 are inclined inwards, and the inclined partitions 21 on both sides are isolated from the inner wall of the beam body 2 to form a closed cavity; the inclined partitions 21 and the beam body 2 form a trapezoidal cavity that is narrow at the top and wide at the bottom; the cavity formed by the inclined partitions 21 and the center of the beam body 2 effectively reduces the weight of the beam body 2, and the casting cavity 23 is isolated on the outside of the inclined partition 21. The casting cavity 23 on the outside can form an integral reinforcement block for concrete casting, and the casting cavity 23 can form an integral structure with the connecting plate 1, effectively improving the integrity of the connection between the box beam 2 and the column 4, thereby strengthening the connection strength with the column 4 through the casting cavity 23, reducing the dead weight through the hollow beam body 2, so that the weight of the beam body is more distributed at the connection node with the column 4, dispersing the force in the middle of the beam body 2, effectively reducing the shear force generated by the beam body 2 at the connection point, effectively reducing the deformation of the beam body 2, and strengthening the structure of the beam body 2.
[0038] The bottom flat plate of the beam body 2 outside the inclined partition 21 is the receiving plate 22, the top of the beam body 2 is mounted on the top of the connecting plate 1, and the outside of the receiving plate 22 is against the inner wall of the connecting plate 1; the extended length of the outside of the receiving plate 22 is less than the length of the flat plate at the top of the beam body 2, that is, the difference of d between the single side of the receiving plate 22 and the total length of the beam body 2, then the gap d is the thickness of the connecting plate 1. Thus, a slot is formed at the top and the front and rear sides of the beam body 2. When the beam body 2 is docked with the connecting plate 2, the connecting plate 2 fits into the slot on the outside of the receiving plate 22, and the outside of the receiving plate 22 is tightly against the bottom of the side wall of the connecting plate 1, so that the receiving plate 22, the inclined partition 21 and the top plate of the beam body 2 form a closed hollow casting cavity 23, which can prevent concrete leakage and form an integral structure with the connecting plate 1, the casting cavity 23 and the beam body 2;
[0039] The pouring frame 3 is a circular ring, and the inner hole of the pouring frame 3 is a pouring hole 31, and the diameter of the pouring hole 31 is not less than 30 cm. A pouring frame 3 is set at each of the left and right ends of the top of the beam body 2, and the pouring frames 3 at both ends are respectively set directly above the pouring cavities 23 at the left and right ends, and the pouring hole 31 is connected with the inner cavity of the pouring cavity 23. Concrete is poured into the pouring cavity 23 through the pouring hole 31, and the reinforcing rod 12 can also be locked on the connecting plate 1 through the pouring hole 31. The larger the pouring hole 31, the more convenient the operation, and the larger the hole will cause the formation of a weak point of force around the pouring hole 31. By adding the pouring frame 3 to strengthen its structure, it is not necessary to reinforce it during the later construction.
[0040] Moreover, by pouring concrete in the pouring cavity 23, the two ends of the beam body 2 are made heavier, and the stress of the beam body 2 is concentrated at the two ends, rather than the center of the beam body 2 being the heaviest. In this way, more pressure is borne by the connecting plate 1, and the bearing force is transferred to the column 4, so that the shear force borne by the beam body 2 itself is smaller, and its bearing capacity is stronger.
[0041] It should be noted that:
[0042] 1. The current box beam is an integral pipe-like structure with openings at both ends, and then concrete is poured inside and placed on the columns 4. This box beam has a large self-weight and needs to be connected with steel bars at the nodes. The workload of connecting steel bars is large and the operation is difficult. It is difficult to lock the steel bars in place when operating inside the box beam, and the connection effect is limited. This device no longer connects steel bars, but supports the inner cavity top plate of the beam body 2 through the connecting plate 1. The positioning nails 11 are also locked on the outside of the connecting plate 1, and the reinforcement rods 12 are locked on the inside. The inside of the beam body 2 and the columns 4 are effectively poured through the connecting plate 1 to form an integral structure, which has a good connection effect, and the installation method is much simpler than the wall steel bar connection, and the operation is simpler. Each structure can achieve the preset effect and has high strength.
[0043] 2. Some box girders are directly erected on the columns. However, if they are directly erected, the connection strength is insufficient, and the cold joints are prone to cracking, resulting in reduced strength at the nodes. This situation does not exist in this device. The inner cavity of the beam body 2 and the connecting plate 1 of this device form a pre-buried structure through the reinforcement rod 12. The connection is subjected to overall force, and the shareholders before the node are higher;
[0044] 3. Many existing box beams need to be completely cast inside to ensure their structural strength. The device adds an inclined partition 21. The inclined partition 21 not only plays the role of reinforcing ribs and increases the structural strength of the beam body 2, but also reduces the deadweight of the beam body 2, disperses the force at the middle stress concentration point, improves the overall force balance, and makes the beam body 2 less likely to deform; due to the effect of the inclined partition 21, the amount of concrete close to the inner side of the beam body is reduced, thereby reducing the influence of the deadweight of the concrete and the bending moment generated at the node.
[0045] When the utility model is in use, the connecting plate 1 is first installed and locked on the inner wall of the column 4 by connecting expansion bolts or embedded bolts, and then the beam body 2 is hoisted to insert the connecting plate 1 into the slot on the outside of the receiving plate 22, so that the connecting plate 1 closes the outer opening of the casting cavity 23.
[0046] Then, the reinforcing rod 12 is locked on the connecting plate 1 through the pouring hole 31, and finally, concrete is poured into the pouring cavity 23 through the pouring hole 31 to complete the construction. Both sides of the beam body 2 can be connected to the column 4 in this way.
[0047] In the description, the inner side refers to the center of the beam 2, the outer side and the outer end refer to the connection between the beam 2 and the column 4, the left and right direction refers to the connection section between the beam 2 and the column 4, and the front and back direction refers to the connection section between the beam 2 and the column 4. Figure 2 The front and rear surfaces thereof indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0048] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.
Claims
1. A concrete box beam reinforcement structure, characterized in that: include: Connecting plate (1), beam body (2), casting frame (3) and column (4); The connecting plate (1) is a flat plate, and a plurality of positioning pins (11) and a plurality of reinforcing rods (12) are arranged on the connecting plate (1). The connecting plate (1) is locked on the vertical side wall of the column (4) by means of the plurality of positioning pins (11); the plurality of reinforcing rods (12) are horizontally locked on the inner side of the connecting plate (1); The beam body (2) is a box beam with a hollow interior. The left and right ends of the beam body (2) are open. An inclined partition plate (21) is provided on each of the left and right sides of the interior of the beam body (2). The upper ends of the inclined partition plates (21) on the left and right sides of the beam body (2) are inclined inwards. The inclined partition plates (21) on both sides are isolated from the inner wall of the beam body (2) to form a closed cavity. The bottom flat plate of the beam body (2) outside the inclined partition (21) is a receiving plate (22); the top of the inner cavity of the beam body (2) is mounted on the top of the connecting plate (1); the outer side of the receiving plate (22) abuts against the inner wall of the connecting plate (1); the receiving plate (22), the inclined partition (21) and the top plate of the beam body (2) form a closed hollow casting cavity (23); The casting frame (3) is a circular ring, and the inner hole of the casting frame (3) is a casting hole (31). A casting frame (3) is respectively arranged at the left and right ends of the top of the beam body (2), and the casting frames (3) at the two ends are respectively arranged directly above the casting cavities (23) at the left and right ends, and the casting hole (31) is connected to the inner cavity of the casting cavity (23).
2. A concrete box beam reinforcement structure according to claim 1, characterized in that: A column (4) is provided at each of the left and right ends of the beam body (2), and the beam body (2) is stably mounted on the column (4) via a connecting plate (1).
3. The concrete box beam reinforcement structure according to claim 1, characterized in that: The inclined partition plate (21) and the beam body (2) form a trapezoidal cavity that is narrow at the top and wide at the bottom; The casting cavity (23) is isolated outside the inclined partition plate (21).
4. The concrete box beam reinforcement structure according to claim 1, characterized in that: The diameter of the casting hole (31) is not less than 30 cm.
5. The concrete box beam reinforcement structure according to claim 1, characterized in that: A plurality of the positioning pins (11) extend horizontally outside the connecting plate (1), and the plurality of the positioning pins (11) are arranged in a rectangular row on the connecting plate (1), the positioning pins (11) are countersunk screws, the nail heads of the positioning pins (11) are locked on the inside of the connecting plate (1), and the nail tips of the positioning pins (11) are locked inside the pillars (4); A plurality of the reinforcing rods (12) extend horizontally from the inner side of the connecting plate (1), and the plurality of the reinforcing rods (12) are distributed on the connecting plate (1) in a rectangular row, and the reinforcing rods (12) are screw rods; The length of the reinforcement rod (12) is not less than 10 cm.