Reinforcing connecting device for prestressed concrete structure hole

Abstract

The utility model discloses a prestressed concrete structure hole reinforcing connecting device, which belongs to the field of concrete structure design and construction, and comprises a concrete beam, and a hole is arranged in the concrete beam. Meanwhile, the connecting prestressed steel strands are arranged at the circular hole, the hole is surrounded by the connecting prestressed steel strands, the effect of enhancing the shear bearing capacity of the net section of the beam at the hole can be achieved, and meanwhile the connecting prestressed steel strands comprise the horizontal prestressed steel strands and the hole prestressed steel strands; the reinforcing ribs on the periphery of the hole are extruded through the arc-shaped hole prestress steel strands, the effect of supporting multiple side ends of the hole can be well achieved, the supporting force of the hole is enhanced, the hole is more stable, the effect of reinforcing connection of a concrete hole structure is achieved, and later construction is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of concrete structure design and construction, and more specifically, to a reinforcing connection device for openings in prestressed concrete structures. Background Technology

[0002] In some buildings, due to floor height limitations, equipment pipes (such as fan pipes, water supply and drainage pipes, etc.) need to be installed in reinforced concrete beams. However, leaving openings in reinforced concrete beams disrupts the beam's stress mechanism, reduces its load-bearing capacity and stiffness, and increases its deflection. Under earthquake action, this can easily lead to local instability at the openings. In such cases, a prestressed concrete structure opening reinforcement connection device is needed to increase the shear bearing capacity of the beam's net cross-section at the opening.

[0003] In practical applications, existing prestressed concrete structure opening reinforcement connection devices typically involve reinforcing bars around the opening for support. However, since openings are generally rectangular, space constraints on the beam mean that reinforcement bars are usually installed on both sides of the opening to support the outer wall. This limits the support capacity on the other two sides of the opening, which affects the stability of the opening. Therefore, there is an urgent need to improve the technology of the prestressed concrete structure opening reinforcement connection device to perfect this equipment. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a reinforcing connection device for openings in prestressed concrete structures. When used, this device allows for the opening to be circular, with connecting prestressed steel strands installed within the circular opening. These strands surround the opening, enhancing the shear bearing capacity of the beam's net cross-section at the opening. The connecting prestressed steel strands include horizontal prestressed steel strands and opening prestressed steel strands. The arc-shaped opening prestressed steel strands compress the reinforcing ribs around the opening, effectively supporting multiple sides of the opening, strengthening its support, and making it more stable. This reinforces the concrete opening structure and facilitates subsequent construction.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A prestressed concrete structure opening reinforcement connection device includes a concrete beam with an opening inside. An upper beam is located at the upper part of the concrete beam near the opening, and a lower beam is located at the lower part of the concrete beam near the opening. Connecting stirrups are welded between the upper and lower beams. A steel sleeve is provided outside the opening. Horizontal bars are connected to the outer ends of the connecting stirrups. Reinforcing bars are connected to the inner wall of the steel sleeve and are tightly attached to the outer wall of the opening. Connecting prestressed steel strands are provided outside the opening, passing through the connecting stirrups on one side and connecting to the connecting stirrups on the other side.

[0009] Furthermore, four U-shaped carbon cloth hoops are affixed to the inner wall of the opening, and the distance between the four U-shaped carbon cloth hoops is equal.

[0010] Furthermore, the connecting stirrups are provided in two sets, which are symmetrically arranged on both sides of the opening, and the two sets of connecting stirrups are connected by horizontal bars.

[0011] Furthermore, the reinforcing ribs are arranged on the left, right, front, and rear sides of the opening, and the opening is cut into the steel cage formed by the reinforcing ribs.

[0012] Furthermore, the connecting prestressed steel strand is provided with multiple horizontal prestressed steel strands, which are arranged outside the steel sleeve and connected to the connecting stirrups. Opening prestressed steel strands are arranged around the opening and are arranged inside the steel sleeve.

[0013] Furthermore, the prestressed steel strands at the opening pass through the steel sleeve and extend to the stirrups on both sides, with the prestressed steel strands at the opening being arc-shaped on the side closest to the opening.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention, by making the opening circular and installing connecting prestressed steel strands within the circular opening, enhances the shear bearing capacity of the beam's net cross-section at the opening. The connecting prestressed steel strands include horizontal prestressed steel strands and opening prestressed steel strands. The arc-shaped opening prestressed steel strands compress the reinforcing ribs around the opening, effectively supporting multiple sides of the opening, strengthening its support, and making it more stable. This creates a reinforced connection for the concrete opening structure, facilitating subsequent construction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the distribution structure of the prestressed steel strands connected around the opening of this utility model;

[0019] Figure 3 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0020] Explanation of the labels in the diagram:

[0021] 1. Concrete beam; 2. Opening; 3. Upper beam; 4. Lower beam; 5. Connecting stirrups; 6. Steel sleeve; 7. Horizontal reinforcement; 8. Reinforcing reinforcement; 9. Connecting prestressed steel strands; 901. Horizontal prestressed steel strands; 902. Prestressed steel strands at the opening; 10. U-shaped carbon fiber hoop. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 A prestressed concrete structure opening reinforcement connection device includes a concrete beam 1, an opening 2 inside the concrete beam 1, an upper beam 3 near the upper part of the concrete beam 1 near the opening 2, a lower beam 4 near the lower part of the concrete beam 1 near the opening 2, connecting stirrups 5 welded between the upper beam 3 and the lower beam 4, a steel sleeve 6 outside the opening 2, horizontal bars 7 connected to the outer ends of the connecting stirrups 5, reinforcing bars 8 connected to the inner wall of the steel sleeve 6, the reinforcing bars 8 closely attached to the outer wall of the opening 2, and connecting prestressed steel strands 9 outside the opening 2, the connecting prestressed steel strands 9 passing through the connecting stirrups 5 on one side and connecting to the connecting stirrups 5 on the other side.

[0024] By making the opening 2 circular and installing connecting prestressed steel strands 9 within it, the opening 2 is surrounded by these strands. These connecting prestressed steel strands 9, composed of multiple strands of twisted steel wire, enhance the shear capacity of the beam's net cross-section at the opening 2. The connecting prestressed steel strands 9 include horizontal prestressed steel strands 901 and opening prestressed steel strands 902. The curved opening prestressed steel strands 902 compress the reinforcing ribs 8 around the opening 2, effectively supporting multiple sides of the opening 2, enhancing its structural strength and stability. This creates a reinforced connection for the concrete opening 2 structure, facilitating subsequent construction.

[0025] Please see Figure 1 and Figure 3 Four U-shaped carbon cloth hoops 10 are pasted on the inner wall of the opening 2. The distance between the four U-shaped carbon cloth hoops 10 is equal. By setting the U-shaped carbon cloth hoops 10, the inner wall of the opening 2 can be reinforced and supported. Two sets of connecting hoops 5 are set, and the two sets of connecting hoops 5 are symmetrically set on both sides of the opening 2. The two sets of connecting hoops 5 are connected by horizontal bars 7. Reinforcing bars 8 are set on the left, right and front and rear sides of the opening 2. The opening 2 is tangent to the steel cage formed by the reinforcing bars 8. The steel cage formed by the reinforcing bars 8 enhances the stable support of the opening 2.

[0026] Please see Figure 1-3 Multiple horizontal prestressed steel strands 901 are installed inside the connecting prestressed steel strand 9. The horizontal prestressed steel strands 901 are set outside the steel sleeve 6 and are connected to the connecting stirrups 5. Opening prestressed steel strands 902 are set around the opening 2. The opening prestressed steel strands 902 are set inside the steel sleeve 6. The opening prestressed steel strands 902 pass through the steel sleeve 6 and extend to the connecting stirrups 5 on both sides. The side of the opening prestressed steel strands 902 near the opening 2 is set in an arc shape. By setting the side of the opening prestressed steel strands 902 near the opening 2 in an arc shape, the reinforcing ribs 8 around the opening 2 can be compressed, which can better support the multiple sides of the opening 2, enhance the support force of the opening 2, and make it more stable.

[0027] In this utility model, when those skilled in the art use the device, the opening 2 is made circular, and a connecting prestressed steel strand 9 is installed in the circular opening 2 to surround the opening 2. The connecting prestressed steel strand 9 is a steel product composed of multiple steel wires twisted together, which can enhance the shear bearing capacity of the beam's net cross-section at the opening 2. At the same time, the connecting prestressed steel strand 9 includes a horizontal prestressed steel strand 901 and an opening prestressed steel strand 902. The arc-shaped opening prestressed steel strand 902 compresses the reinforcing ribs 8 around the opening 2, which can better support multiple sides of the opening 2, enhance the support force of the opening 2, make it more stable, and form a reinforced connection for the concrete opening 2 structure, which is more convenient for subsequent construction.

[0028] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prestressed concrete structure opening reinforcement connection device, comprising a concrete beam (1), characterized in that: An opening (2) is provided in the concrete beam (1). An upper beam (3) is provided on the upper part of the concrete beam (1) near the opening (2). A lower beam (4) is provided on the lower part of the concrete beam (1) near the opening (2). A connecting stirrup (5) is welded between the upper beam (3) and the lower beam (4). A steel sleeve (6) is provided on the outside of the opening (2). A horizontal bar (7) is connected to the outer end of the connecting stirrup (5). A reinforcing bar (8) is connected to the inner wall of the steel sleeve (6). The reinforcing bar (8) is close to the outer wall of the opening (2). A connecting prestressed steel strand (9) is provided on the outside of the opening (2). The connecting prestressed steel strand (9) passes through the connecting stirrup (5) on one side and is connected to the connecting stirrup (5) on the other side.

2. The prestressed concrete structure opening reinforcement connection device according to claim 1, characterized in that: Four U-shaped carbon cloth hoops (10) are pasted on the inner wall of the opening (2), and the distance between the four U-shaped carbon cloth hoops (10) is equal.

3. The prestressed concrete structure opening reinforcement connection device according to claim 1, characterized in that: The connecting stirrups (5) are provided in two sets, and the two sets of connecting stirrups (5) are symmetrically arranged on both sides of the opening (2). The two sets of connecting stirrups (5) are connected by horizontal bars (7).

4. The prestressed concrete structure opening reinforcement connection device according to claim 1, characterized in that: The reinforcing bars (8) are set on the left, right and front and back sides of the opening (2), and the opening (2) is cut inside the steel cage formed by the reinforcing bars (8).

5. The prestressed concrete structure opening reinforcement connection device according to claim 1, characterized in that: The connecting prestressed steel strand (9) includes horizontal prestressed steel strand (901) and opening prestressed steel strand (902). The connecting prestressed steel strand (9) contains multiple horizontal prestressed steel strands (901). The horizontal prestressed steel strands (901) are located outside the steel sleeve (6) and are connected to the connecting stirrups (5). The opening (2) is surrounded by opening prestressed steel strands (902), which are located inside the steel sleeve (6).

6. The prestressed concrete structure opening reinforcement connection device according to claim 5, characterized in that: The prestressed steel strand (902) at the opening passes through the steel sleeve (6) and extends to the stirrups (5) on both sides. The prestressed steel strand (902) at the opening is arc-shaped on the side near the opening (2).

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