A large cantilever beam prefabricated support structure

Abstract

This utility model relates to the field of bridge construction technology, and in particular to a prefabricated support structure for large cantilever beams. It mainly solves the problems of poor stability and poor installation convenience of existing prefabricated supports for large cantilever beams. The structure includes: a load-bearing support made of steel profiles, the load-bearing support being an inverted trapezoidal structure, located at the upper end of the pier body, which can better distribute and bear the load transmitted from the large cantilever beam, improving the structure's load-bearing capacity; a corbel assembly connected to the pier body through a pre-reserved first pin hole; a pin for fixing the corbel assembly to the pier body; a main load-bearing beam installed on the corbel assembly; and a diagonal brace assembly connecting the load-bearing support and the main load-bearing beam to form a stable support. The corbel assembly includes a corbel body, a second pin hole on the corbel body corresponding to the pre-reserved first pin hole on the pier body, and a pin connection part for embedding the pin and fixing it to the pier body, making connection and disassembly convenient and quick.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a prefabricated support structure for large cantilever beams. Background Technology

[0002] In engineering fields such as bridge construction, the construction of large cantilever beams requires the erection of reliable support structures. However, in practice, the following problems have been found with traditional large cantilever beam support structures:

[0003] Some traditional support structures are unable to guarantee overall stability when faced with complex construction environments and loads, and are prone to swaying or deformation, affecting construction safety and quality.

[0004] Some support components have fixed connection methods, which cannot be flexibly adjusted according to actual construction needs, resulting in a complicated installation process that is time-consuming and labor-intensive, and is difficult to adapt to the construction of large cantilever beams under different working conditions.

[0005] During construction, the load-bearing support may experience horizontal displacement due to external forces, and traditional support structures often lack effective lateral limiting devices, which increases construction risks. Utility Model Content

[0006] Therefore, in view of the above problems, this utility model provides a large cantilever beam assembled support structure, which mainly solves the problems of poor stability and poor installation convenience of the existing large cantilever beam assembled support.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A prefabricated support structure for a large cantilever beam includes:

[0009] The load-bearing support is made of steel profiles and has an inverted trapezoidal structure. The load-bearing support is located at the upper end of the pier body.

[0010] The bracket assembly is connected to the pier body through the first pin hole reserved in the pier body;

[0011] Pins are used to securely connect the bracket assembly to the pier body.

[0012] The load-bearing main beam is installed on the corbel assembly;

[0013] The diagonal bracing assembly connects the load-bearing bracket and the main load-bearing beam to form a stable support;

[0014] The bracket assembly includes a bracket body, a second pin hole on the bracket body corresponding to the first pin hole reserved on the pier body, and a pin connection part for embedding the pin and fixing it to the pier body.

[0015] Furthermore, the diagonal bracing assembly includes an adjustable-length diagonal brace, with connecting plates hinged to both ends of the diagonal brace. The connecting plates at both ends of the diagonal brace are respectively connected to the load-bearing bracket and the load-bearing main beam by bolts. The inclination angle of the diagonal brace is adjustable within the range of 30° to 45° by an angle adjustment device.

[0016] Furthermore, the angle adjustment device includes a groove on the connecting piece, a slider that can slide along the groove, a hinge rod on the slider for hinged connection with the diagonal brace, and an adjustment rod rotatably connected to the slider. The adjustment rod is threadedly connected to the connecting piece. By rotating the adjustment rod, the slider is driven to slide along the groove, thereby realizing the adjustment of the tilt angle of the diagonal brace.

[0017] Furthermore, a lateral limiting device is provided between the load-bearing support and the pier body to prevent horizontal displacement of the load-bearing support. The lateral limiting device includes:

[0018] Limiting blocks are fixed to the side of the pier body;

[0019] An elastic buffer is installed between the limit block and the load-bearing bracket.

[0020] Furthermore, the pin connection includes an inner ring body, an outer ring body, and reinforcing ribs that connect the inner ring body and the outer ring body and are distributed in a ring array.

[0021] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: This prefabricated support structure for a large cantilever beam, using specific component combinations, forms a complete and stable support system. The load-bearing support uses steel profiles and has an inverted trapezoidal structure, located at the upper end of the pier, which can better distribute and bear the load transmitted from the large cantilever beam, improving the structure's load-bearing capacity. Furthermore, the corbel component is connected to the pier through the first pin hole reserved in the pier, and is equipped with a corresponding second pin hole and pin connection part. This design makes the connection and disassembly of the corbel component to the pier more convenient and quick, facilitating construction, installation, and subsequent maintenance. Moreover, the main load-bearing beam is installed on the corbel component, providing a stable support platform for the subsequent construction of the large cantilever beam, ensuring safety during construction. The diagonal brace component connects the load-bearing support and the main load-bearing beam, forming a stable triangular support structure, effectively enhancing the stability of the entire support and reducing structural swaying and deformation during construction. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of an embodiment of the present utility model;

[0023] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0024] Figure 3 This is a front view structural diagram of the bracket assembly in an embodiment of this utility model. Detailed Implementation

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0026] The embodiment of this utility model is as follows:

[0027] refer to Figure 1 , Figure 2 and Figure 3 As shown, a large cantilever beam prefabricated support structure includes:

[0028] The load-bearing support 1 is made of steel profiles and has an inverted trapezoidal structure. The load-bearing support 1 is located at the upper end of the pier body 2.

[0029] The bracket assembly 3 is connected to the pier body 2 through the first pin hole 4 reserved in the pier body 2;

[0030] Pin 5 is used to fix the bracket assembly 3 to the pier body 2.

[0031] The main load-bearing beam 6 is installed on the corbel assembly 3;

[0032] The diagonal bracing assembly 7 connects the load-bearing bracket 1 and the load-bearing main beam 6 to form a stable support;

[0033] The bracket assembly 3 includes a bracket body 31, a second pin hole 32 on the bracket body 31 corresponding to the first pin hole 4 reserved on the pier body 2, and a pin connection part 33 for embedding the pin 5 and fixing it to the pier body 2.

[0034] This prefabricated support structure for a large cantilever beam utilizes a specific combination of components to form a complete and stable support system. The load-bearing support 1, made of steel with an inverted trapezoidal structure, is located at the top of the pier 2, which can better distribute and bear the load transmitted from the large cantilever beam, improving the structure's load-bearing capacity. Furthermore, the corbel assembly 3 is connected to the pier 2 through the first pin hole 4 pre-reserved in the pier 2, and is equipped with a corresponding second pin hole 32 and pin connection part 33. This design makes the connection and disassembly of the corbel assembly 3 to the pier 2 more convenient and quick, facilitating construction, installation, and subsequent maintenance. Moreover, the main load-bearing beam is installed on the corbel assembly, providing a stable support platform for the subsequent construction of the large cantilever beam and ensuring safety during construction. The diagonal brace assembly 7 connects the load-bearing support 1 and the main load-bearing beam 6, forming a stable triangular support structure, which effectively enhances the stability of the entire support and reduces the swaying and deformation of the structure during construction.

[0035] Specifically, the diagonal bracing assembly 7 includes an adjustable-length diagonal brace 71. Connecting plates 72 are hinged to both axial ends of the diagonal brace 71. The connecting plates 72 at both axial ends of the diagonal brace 71 are connected to the load-bearing bracket 1 and the load-bearing main beam 6 respectively via bolts 73. The inclination angle of the diagonal brace 71 is adjustable within the range of 30° to 45° via an angle adjustment device 8. The adjustable length of the diagonal brace 71 in the diagonal bracing assembly 7 allows for flexible adjustment of the diagonal brace length according to actual construction conditions and different cantilever beam sizes, adapting to various working conditions and improving the flexibility of the support structure. For ease of use and adaptability, the diagonal brace 71 is hinged to connecting plates 72 at both ends of its axial direction and connected to the load-bearing bracket 1 and the load-bearing main beam 6 by bolts 73. This hinged connection allows the diagonal brace 71 to rotate more flexibly during installation and adjustment, making it easier for construction personnel to operate. It also reduces stress concentration caused by connection rigidity issues. The inclination angle of the diagonal brace 71 can be adjusted within the range of 30° to 45° by the angle adjustment device 8. Based on specific mechanical calculations and construction requirements, the support angle of the diagonal brace can be optimized, further improving the stability and load-bearing capacity of the support structure.

[0036] Furthermore, the angle adjustment device 8 includes a groove 81 on the connecting piece 72, a slider 82 that can slide along the groove 81, a hinge rod 83 on the slider 82 for hinged connection with the diagonal brace 71, and an adjusting rod 84 rotatably connected to the slider 82. The adjusting rod 84 is threadedly connected to the connecting piece 72. By rotating the adjusting rod 84, the slider 82 is driven to slide along the groove 81, thereby realizing the adjustment of the tilt angle of the diagonal brace 71. The angle adjustment device 8 is composed of a groove 81 on the connecting piece 72, a slider 82 that can slide along the groove 81, a hinge rod 83 on the slider 82, and an adjusting rod 84 rotatably connected to the slider 82. The structure is simple and the design is reasonable. The adjusting rod 84 is threadedly connected to the connecting piece 72. By rotating the adjusting rod 84, the slider 82 can be driven to slide along the groove 81, thereby realizing the precise adjustment of the tilt angle of the diagonal brace 71. The operation is convenient and the adjustment accuracy is high.

[0037] Furthermore, a lateral limiting device is provided between the load-bearing support 1 and the pier body 2 to prevent horizontal displacement of the load-bearing support. The lateral limiting device includes:

[0038] Limiting block 9 is fixed to the side of the pier body 2;

[0039] The elastic buffer 10 is installed between the limit block 9 and the load-bearing bracket 1.

[0040] A lateral limiting device is installed between the load-bearing support 1 and the pier body 2. The limiting block 9 is fixed to the side of the pier body 2, which can effectively limit the horizontal displacement of the load-bearing support 1, prevent the load-bearing support from shifting due to external forces, and ensure the overall stability of the support structure. An elastic buffer is installed between the limiting block 9 and the load-bearing support 1. When the load-bearing support 1 is subjected to external impact, it can play a buffering role, reduce the impact force on the limiting block 9 and the load-bearing support 1, extend the service life of the structure, and improve the safety during construction.

[0041] In this embodiment, the pin connection 33 includes an inner ring 331, an outer ring 332, and reinforcing ribs 333 arranged in a ring array connecting the inner ring 331 and the outer ring 332. This structural design increases the strength and stability of the pin connection 33, enabling it to better withstand the load transmitted by the pin 5, reduce the deformation and damage of the pin connection 33, and improve the safety of the entire support structure. The ring array distribution of the reinforcing ribs 333 makes the force on the pin connection 33 more uniform, avoids local stress concentration, further improves the reliability of the pin connection 33, and ensures that the support structure can operate stably during construction.

[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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this invention, 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," "over," and "on top" of 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] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A prefabricated support structure for a large cantilever beam, characterized in that: include: The load-bearing support is made of steel profiles and has an inverted trapezoidal structure. The load-bearing support is located at the upper end of the pier body. The bracket assembly is connected to the pier body through the first pin hole reserved in the pier body; Pins are used to securely connect the bracket assembly to the pier body. The load-bearing main beam is installed on the corbel assembly; The diagonal bracing assembly connects the load-bearing bracket and the main load-bearing beam to form a stable support; The bracket assembly includes a bracket body, a second pin hole on the bracket body corresponding to the first pin hole reserved on the pier body, and a pin connection part for embedding the pin and fixing it to the pier body.

2. The prefabricated support structure for a large cantilever beam according to claim 1, characterized in that: The diagonal bracing assembly includes an adjustable-length diagonal brace, with connecting plates hinged to both ends of the diagonal brace. The connecting plates at both ends of the diagonal brace are respectively connected to the load-bearing bracket and the load-bearing main beam by bolts. The inclination angle of the diagonal brace is adjustable within the range of 30° to 45° by an angle adjustment device.

3. The prefabricated support structure for a large cantilever beam according to claim 2, characterized in that: The angle adjustment device includes a groove on the connecting piece, a slider that can slide along the groove, a hinge rod on the slider for hinged connection with the diagonal brace, and an adjustment rod that is rotatably connected to the slider. The adjustment rod is threadedly connected to the connecting piece. By rotating the adjustment rod, the slider is driven to slide along the groove, thereby realizing the adjustment of the tilt angle of the diagonal brace.

4. The prefabricated support structure for a large cantilever beam according to claim 3, characterized in that: A lateral limiting device is provided between the load-bearing support and the pier body to prevent horizontal displacement of the load-bearing support. The lateral limiting device includes: Limiting blocks are fixed to the side of the pier body; An elastic buffer is installed between the limit block and the load-bearing bracket.

5. The prefabricated support structure for a large cantilever beam according to claim 1, characterized in that: The pin connection includes an inner ring body, an outer ring body, and reinforcing ribs that connect the inner ring body and the outer ring body and are distributed in a ring array.

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