A super-girder joint reinforcing device

Abstract

The utility model discloses a super beam node reinforcing device, include: roof support, lower support pole, lower support pole is located roof support below with roof support is connected, support pole, support pole is erected in the left and right sides of roof support, inclined bracing, the inclined bracing detachable installation in the lower part outside of support pole. The device adopts external frame type structure, and combines with the beam column node outside through the support and the support pole, thoroughly avoids the drilling of the mould in the beam, the column core area, fundamentally eliminates the cross -section damage, stress concentration and the risk of concrete burst in the tensioning process caused by drilling to the original component, realizes nondestructive reinforcement.

Description

Technical Field

[0001] This utility model relates to a reinforcement device for ultra-large beam joints, belonging to the field of building construction technology. Background Technology

[0002] In large building structures, beam-column joints are critical components for transmitting bending moments, shear forces, and axial forces, and their safety and stability are essential to the integrity of the entire structure. However, in actual engineering projects, factors such as design changes, increased loads, or material aging often cause joints to become weak points in the structure. Therefore, it is often necessary to strengthen such beam-column joints to improve the stiffness and load-bearing capacity of the structure. Currently, the through-formwork tie rod reinforcement method is widely used in this field. This method involves drilling large-diameter ducts in the core area of ​​the beam and column, installing tie rods, and applying preload. This passive reinforcement system relies on the members working when the beam deforms. Its main implementation steps include drilling, tensioning, and anchoring to improve the shear and bending resistance of the joint area. However, the through-formwork tie rod method has fatal flaws: 1. Significant drilling damage. The drilling process severely weakens the original member cross-section, forming stress concentration points, which can easily lead to local cracking and damage. 2. High construction load. The huge construction load applied by the tensioning preload often causes the concrete around the drilled hole to crush, bringing a high risk of collapse. 3. Stress hysteresis. The passive strengthening mechanism results in stress hysteresis, only working after the beam has undergone significant deformation, and cannot effectively inhibit the development of early cracks. Utility Model Content

[0003] Based on the above, this utility model provides a reinforcement device for ultra-large beam nodes to overcome the shortcomings of the prior art.

[0004] The technical solution of this utility model is: a reinforcement device for ultra-large beam nodes, comprising:

[0005] Top plate support;

[0006] The lower support rod is located below the top plate support and is connected to the top plate support;

[0007] Support rods are mounted on the left and right sides of the top plate support;

[0008] A diagonal brace, which is detachably installed on the lower outer side of the support rod.

[0009] In one example, the top plate support includes a bottom plate, side plates, and ear plates. The side plates are vertically arranged on the left and right sides of the bottom plate, and the ear plates are arranged on the outer side of the side plates and the middle section of the bottom of the bottom plate.

[0010] In one example, the support rod is L-shaped and is rotatably mounted on the ear plate via a fixing rod, and a locking nut is installed on the fixing rod.

[0011] In one example, the lower support rod is rotatably mounted on the ear plate via a fixing rod, and a locking nut is installed on the fixing rod.

[0012] In one example, a support base is provided on the lower outer side of the support rod, and the end of the diagonal brace is rotatably mounted on the support base via a fixing rod, and a locking nut is installed on the fixing rod.

[0013] The beneficial effects of this utility model are:

[0014] 1. This device adopts an external frame structure, which is connected to the beam and column joints through supports and support rods. This completely avoids drilling through the core area of ​​the beam and column, fundamentally eliminating the risk of cross-sectional damage, stress concentration and concrete cracking during tensioning caused by drilling to the original components, and achieving non-destructive reinforcement.

[0015] 2. By applying prestress, this device can actively offset part of the external load, providing constraint reaction force to the node area before the load increases, immediately improving the stiffness and bearing capacity of the structure, effectively suppressing the generation and development of cracks, and overcoming the drawback of "stress lag" in traditional passive reinforcement methods.

[0016] 3. The triangular stable structure composed of top plate support, support rods and diagonal braces can effectively transfer and disperse the load borne by the nodes, with a clear force pattern and high reinforcement efficiency. Attached Figure Description

[0017] Figure 1 Schematic diagram of a reinforcement device for ultra-large beam nodes;

[0018] Figure 2 An exploded view of the reinforcement device for ultra-large beam nodes;

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Top plate support, 11. Bottom plate body, 12. Side plate body, 13. Ear plate, 2. Lower support rod, 3. Support rod, 31. Support seat, 4. Diagonal brace, 5. Fixing rod, 6. Locking nut, 7. Beam-column joint. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] Please see Figure 1 and Figure 2 This embodiment of a super-large beam joint reinforcement device includes a top plate support 1, a lower support rod 2, a support rod 3, and a diagonal brace 4.

[0023] The top plate support 1 includes a bottom plate 11, side plates 12, and ear plates 13. The side plates 12 are vertically fixed to the left and right sides of the bottom plate 11. A large beam node is installed between the bottom plate 11 and the side plates 12. The ear plates 13 are installed on the outer side of the side plates 12 and at the bottom middle section of the bottom of the bottom plate 11. The lower support rod 2 is rotatably mounted on the ear plates 13 via a fixing rod 5, and a locking nut 6 is installed on the fixing rod 5. The locking nut 6 secures the lower support rod 2 to the bottom plate 11. The support rod 3 is L-shaped and rotatably mounted on the ear plates 13 on the outer side of the side plates 12 via a fixing rod 5. The fixing rod 5 is also equipped with a locking nut 6, which secures the support rod 3 to the side plates 12. A support base 31 is provided on the lower outer side of the support rod 3. The end of the diagonal brace 4 is rotatably mounted on the support base 31 through the fixing rod 5, and a locking nut 6 is installed on the fixing rod 5. The locking nut 6 can be used to fix the diagonal brace 4 to the support rod 3.

[0024] The construction method for the above-mentioned super-large beam joint reinforcement device is as follows:

[0025] 1. Pre-construction preparation and measurement: Accurately measure the beam-column joint 7 that needs to be reinforced, and customize or select modular components such as top plate support 1, support rod 3 and diagonal brace 4 according to the size.

[0026] 2. Install the top plate support 1: Attach the bottom plate 11 of the top plate support 1 to the bottom surface of the beam. At this time, the side plates 12 of the top plate support 1 are located on both sides of the beam, and the ear plates 13 on them provide interfaces for subsequent connections.

[0027] 3. Install support rod 3 and lower support rod 2: Hinge the upper end of the L-shaped support rod 3 to the ear plate 13 on the side of the top plate support 1 via a fixing rod 5 (such as a pin), and initially fix it with a locking nut 6. Similarly, hinge one end of the lower support rod 2 to the ear plate 13 at the bottom of the base plate 11. By adjusting the tightness of the locking nut 6, the position of these rods can be temporarily fixed for subsequent adjustments.

[0028] 4. Install diagonal brace 4: Hinge the upper end of diagonal brace 4 to the support base 31 on the lower outer side of support rod 3 via fixing rod 5, and fix it with lock nut 6.

[0029] 5. Applying Prestress and Final Locking: After all members are installed in place, apply prestress at appropriate locations on the device (e.g., on the frame formed by support rod 3 and diagonal brace 4) using specialized tools (such as jacks). During the application of prestress, the internal forces of the members are redistributed, and the pressure is actively transmitted to the beam-column joint 7 through the top plate support 1 and the lower support rod 2. After reaching the design prestress value, tighten all locking nuts 6 to lock the entire device in a stressed working state, completing the reinforcement.

[0030] The technical principle of this invention is as follows: An external prestressed stabilizing frame is constructed, which is wrapped around the beam body by a top plate support 1. One or more triangular load-bearing units are formed by L-shaped support rods 3 and diagonal braces 4. When prestress is applied to the frame, the prestress is converted into lateral constraint force and upward lifting force on the beam-column joint area 7 through the support rods 3. This force is opposite to the direction of the load borne by the joint, thus actively offsetting the load effect and improving the bending and shear resistance of the joint. Simultaneously, the added diagonal braces 4 transfer part of the load obliquely to the structure below, changing the traditional force transmission path and effectively distributing the stress in the joint area. This device, as a rigid external skeleton, works together with the original structure, significantly enhancing the integrity and load-bearing capacity of the joint. All operations are completed outside the structure, ensuring safety and efficiency.

[0031] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A reinforcement device for ultra-large beam joints, characterized in that, include: Top plate support (1); The lower support rod (2) is located below the top plate support (1) and is connected to the top plate support (1); Support rod (3), the support rod (3) is mounted on the left and right sides of the top plate support (1); Diagonal brace (4), which is detachably installed on the lower outer side of the support rod (3).

2. The super-large beam joint reinforcement device according to claim 1, characterized in that, The top plate support (1) includes a bottom plate (11), a side plate (12) and an ear plate (13). The side plate (12) is vertically arranged on the left and right sides of the bottom plate (11), and the ear plate (13) is arranged on the outside of the side plate (12) and in the middle of the bottom of the bottom plate (11).

3. The super-large beam joint reinforcement device according to claim 2, characterized in that, The support rod (3) is L-shaped and can be rotatably mounted on the ear plate (13) via the fixing rod (5), and a locking nut (6) is installed on the fixing rod (5).

4. The super-large beam joint reinforcement device according to claim 2, characterized in that, The lower support rod (2) is rotatably mounted on the ear plate (13) via the fixing rod (5), and a locking nut (6) is installed on the fixing rod (5).

5. The super-large beam joint reinforcement device according to claim 1, characterized in that, The lower outer side of the support rod (3) is provided with a support seat (31), and the end of the diagonal brace (4) is rotatably mounted on the support seat (31) through a fixing rod (5), and a locking nut (6) is installed on the fixing rod (5).

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