Bridge pier column outer wrapping reinforcing structure

Abstract

The application discloses a bridge pier column outer wrapping reinforcing structure, a plurality of cylinder bodies are sequentially and fixedly connected in the front and the back, and the plurality of cylinder bodies are wrapped on the peripheral surface of a pier column body; a plurality of fixed flanges are arranged at one end of the cylinder body; a plurality of rotating flanges are arranged at the other end of the cylinder body, the plurality of rotating flanges are fixedly connected with adjacent fixed flanges; one end of an annular blade foot is arranged at the bottom of the cylinder body located at the bottom of the pier column body, and the other end of the annular blade foot extends downward along the axial length direction of the cylinder body; and a stiffening steel hoop is arranged at the peripheral part of the fixed flange. The steel casing body is arranged as a structure in which a plurality of cylinder bodies are sequentially and fixedly connected, so that the steel casing can be synchronously installed with a formwork in a pier column pouring stage, and subsequent secondary positioning and hoisting are avoided; the connection of the fixed flange and the rotating flange simplifies the splicing process of adjacent cylinder bodies, and prevents the pier column surface from being damaged due to mispositioning in the installation process; and the connection of the stiffening steel hoop and the fixed flange improves the structural strength of the fixed flange and the cylinder body, and prevents the splicing part from being deformed or separated due to external force.

Description

Technical Field

[0001] This application relates to the field of bridge pier construction technology, and in particular to an external reinforcement structure for bridge piers. Background Technology

[0002] In recent years, with the accelerated construction of highways, more and more bridges have been built. The industry has also attached great importance to bridge safety. Inspections of bridges that have been built for a long time have revealed that some underwater pile foundations have been affected by river erosion, with varying degrees of defects such as concrete damage and spalling, and exposed steel bars. In order to extend the life of the pile foundations and ensure the safety of the bridge structure, it is necessary to reinforce the pile foundations.

[0003] The current conventional construction method involves first pouring the concrete for the pier, then removing the formwork after the pier has solidified, and finally installing a permanent protective steel casing around the pier. This method requires secondary positioning, hoisting, and fixing operations in a unified spatial location, creating a "dismantle and reinstall" process. This prolongs the pier protection work period, and the ineffective repetitive work increases the labor intensity of the workers. Furthermore, installing the protective casing after the pier has solidified causes it to rub against the pier's surface during installation, resulting in scratches and a reduction in the structural strength of the pier.

[0004] Therefore, there is an urgent need for an external reinforcement structure for bridge piers to solve the above problems. Utility Model Content

[0005] This application provides an external reinforcement structure for bridge piers, aiming to save construction time for protective work while ensuring the structural strength of the pier body.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A bridge pier reinforcement structure includes a steel casing, multiple fixed flanges, multiple rotating flanges, annular cutting edge, and stiffening steel hoops;

[0008] The steel casing body includes multiple cylinders, which are fixedly connected end to end, and the multiple cylinders cover the periphery of the splice of the pier body.

[0009] Multiple fixed flanges are disposed at one end of the corresponding cylinder;

[0010] Multiple rotating flanges are disposed at the other end of the corresponding cylinder, and the ends of the multiple rotating flanges away from the cylinder are fixedly connected to the fixed flanges on the adjacent cylinders.

[0011] One end of the annular cutting edge is located at the bottom of the cylinder at the bottom of the pier body, and the other end extends downward along the axial length of the cylinder.

[0012] The reinforcing steel hoop is fixedly installed around the periphery of the fixed flange.

[0013] Furthermore, the inner wall of the fixed flange at the end away from the cylinder is provided with a groove facing the axis, and the inner wall of the rotating flange at the end near the fixed flange extends a slider toward its axis, and the circumferential surface of the slider slides in contact with the groove wall.

[0014] Furthermore, the chute includes a vertical section and a horizontal section. The length direction of the vertical section is consistent with the axial length direction of the cylinder, and the length direction of the horizontal section is consistent with the radial direction of the cylinder. One end of the horizontal section is connected to the end of the vertical section near the cylinder.

[0015] Furthermore, the annular cutting edge is provided with multiple grouting pipes embedded inside, and multiple stiffening rods are provided around the periphery of the multiple grouting pipes. One end of each stiffening rod is fixed at equal intervals to the periphery of the corresponding grouting pipe, and the other end is fixedly connected to the periphery of the adjacent grouting pipe.

[0016] Furthermore, the axial length direction of the multiple stiffening rods is set at an angle to the axial length direction of the grouting pipe.

[0017] Furthermore, the stiffening steel hoop and the fixing flange are an integral structure.

[0018] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:

[0019] This application sets the steel casing body as a structure of multiple casings fixed end to end, allowing the steel casing to be installed synchronously with the formwork during the pier pouring stage, avoiding subsequent secondary positioning and hoisting; the matching connection between the fixed flange and the rotating flange simplifies the splicing process of adjacent casings, ensuring that the steel casing completely covers the splice of the pier, preventing damage to the pier surface due to misalignment during installation; the setting of the annular cutting edge extending along the axial length of the casing prevents the casing from shifting due to water erosion; the fixed connection between the stiffening steel hoop and the fixed flange improves the structural strength between the flange and the casing, preventing deformation or separation at the splice due to external forces. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a structural schematic diagram of the assembled state provided in the embodiments of this application;

[0022] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0023] Figure 3 for Figure 1 A partial square-sized view of region B in the middle;

[0024] Figure 4 This is a structural schematic diagram of the steel casing body, fixed flange, and rotating flange provided in the embodiments of this application.

[0025] Icons: 1-Pier body; 10-Steel casing body; 11-Casing; 12-Fixed flange; 121-Slide groove; 1211-Vertical section; 1212-Horizontal section; 13-Rotating flange; 131-Slider; 14-Annular cutting edge; 15-Stiffening steel hoop; 16-Grouting pipe; 17-Stiffening rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0027] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0028] like Figures 1-4As shown, a bridge pier reinforcement structure includes a steel casing 11, multiple fixed flanges 12, multiple rotating flanges 13, an annular cutting edge 14, and stiffening steel hoops 15. The steel casing 10 includes multiple casings 11, which are sequentially connected end to end and cover the periphery of the joint of the pier body 1. The multiple fixed flanges 12 are disposed at one end of the corresponding casing 11. The multiple rotating flanges 13 are disposed at the other end of the corresponding casing 11, and the ends of the multiple rotating flanges 13 away from the casing 11 are fixedly connected to the fixed flanges 12 on the adjacent casing 11. One end of the annular cutting edge 14 is disposed at the bottom of the casing 11 located at the bottom of the pier body 1, and the other end extends downward along the axial length of the casing 11. The stiffening steel hoops 15 are fixedly disposed around the fixed flanges 12.

[0029] In the above scheme, by setting the steel casing body 10 as a structure of multiple casings 11 connected end to end, the steel casing can be installed synchronously with the formwork during the pier pouring stage, avoiding subsequent secondary positioning and hoisting; the matching connection between the fixed flange 12 and the rotating flange 13 simplifies the splicing process of adjacent casings 11, ensuring that the steel casing completely covers the splicing area of ​​the pier, preventing damage to the pier surface due to misalignment during installation; the setting of the annular cutting edge 14 extending along the axial length of the casing 11 enhances the contact stability between the bottom of the steel casing and the pier, preventing the casing from shifting due to water erosion; the fixed connection between the stiffening steel hoop 15 and the fixed flange 12 improves the structural strength between the flange and the casing 11, preventing deformation or separation at the splicing area due to external forces.

[0030] It should be noted that during the reinforcement cage casting stage of the pier body 1, the first section 11 of the steel casing body 10 in this application can serve as the formwork for the first section of the pier body 1. During this process, the annular cutting edge 14 extends into the riverbed along with the first section 11, reducing the radial scouring of the pier body 1 by the water flow. After the first section of the pier body is cast, the rotating flange 13 at one end of the second section 11 is fixedly connected to the fixed flange 12 at the end of the first section 11 away from the riverbed, thus completing the casting of the second section of the pier. Throughout this process, the steel casing body 10 always serves as the casting formwork for the pier body 1, while also protecting the circumference of the pier body 1 to ensure the integrity of its perimeter.

[0031] The inner wall of the fixed flange 12 away from the cylinder 11 is provided with a groove 121 with the opening facing the axis. The inner wall of the rotating flange 13 near the fixed flange 12 extends towards its axis with a slider 131. The circumferential surface of the slider 131 slides in contact with the groove wall of the groove 121.

[0032] In the above scheme, the slide groove 121 provides a radial constraint path for the slider 131 of the rotating flange 13, ensuring that the slider 131 always moves along a predetermined trajectory when sliding within the slide groove 121, thus preventing flange misalignment. Furthermore, the circumferential contact between the slider 131 and the slide groove 121 ensures sliding freedom and disperses installation stress through surface contact, preventing localized deformation. Through the relative sliding of the slider 131 within the slide groove 121, the rotating flange 13 can achieve fine-tuning of the angle and compensation of axial displacement during installation, completing flange alignment without repeated disassembly and assembly. This reduces the risk of scratching the pier surface and improves installation efficiency.

[0033] The groove 121 includes a vertical section 1211 and a horizontal section 1212. The groove length direction of the vertical section 1211 is consistent with the axial length direction of the cylinder 11, and the groove length direction of the horizontal section 1212 is consistent with the radial direction of the cylinder 11. One end of the horizontal section 1212 is connected to the end of the vertical section 1211 near the cylinder 11.

[0034] In the above scheme, the vertical section 1211 is aligned with the axis of the cylinder 11, allowing the slider 131 to slide vertically first during installation, achieving initial axial positioning. The horizontal section 1212 is aligned with the radial direction of the cylinder 11, and the slider 131 moves radially after entering the horizontal section 1212, completing the final fixation. The connection point between the vertical section 1211 and the horizontal section 1212 is located near the end of the cylinder 11, ensuring that the slider 131 naturally transitions to the horizontal section 1212 after axial movement, preventing the slider 131 from deviating from the preset path during sliding. The phased sliding path setting of the slide groove 121 ensures precise matching between the slider 131 and the slide groove 121 during installation, while reducing the number of manual adjustments, thereby improving installation efficiency and reducing the risk of scratching the pier surface.

[0035] The annular cutting edge 14 is provided with a plurality of grouting pipes 16 embedded inside. A plurality of stiffening rods 17 are provided around the periphery of the plurality of grouting pipes 16. One end of the stiffening rod 17 is fixed at equal intervals to the periphery of the corresponding grouting pipe 16, and the other end is fixedly connected to the periphery of the adjacent grouting pipe 16.

[0036] In the above scheme, multiple pre-embedded grouting pipes 16 are used to achieve uniform distribution of the reinforcement material, avoiding insufficient or excessive grouting in certain areas. Stiffening rods 17 are installed around the grouting pipes 16 and fixed at equal intervals to form a mesh support structure, enhancing the rigidity of the internal skeleton of the annular cutting edge 14. One end of the stiffening rod 17 is fixed to a single grouting pipe 16, and the other end connects to an adjacent grouting pipe 16, forming a multi-directional force transmission path. This disperses the local impact of grouting pressure on the cutting edge, ensuring the stability of the grouting channel and improving the overall bending and shear resistance of the annular cutting edge 14, thereby ensuring a reliable connection between the reinforcement structure and the pier body 1.

[0037] The axial length direction of the multiple stiffening rods 17 is set at an angle to the axial length direction of the grouting pipe 16.

[0038] In the above scheme, the stiffening rod 17 is not parallel to the axis of the grouting pipe 16, so that a multi-directional support node is formed between adjacent grouting pipes 16, which effectively disperses the radial pressure generated during the grouting process; the stiffening rods 17 in different directions are arranged in a cross shape to form a triangular stable structure, which suppresses the vibration displacement of the grouting pipe 16 during concrete pouring and ensures the positional accuracy of the pre-embedded grouting pipe 16 during the reinforcement construction process.

[0039] The stiffening steel hoop 15 and the fixed flange 12 are an integral structure.

[0040] In the above solution, by making the stiffening hoop 15 and the fixed flange 12 an integral structure, the welding or bolting process required for traditional separate connections is eliminated. The integral structure makes the stiffening hoop 15 directly become an extension of the fixed flange 12. When the flange bears the axial load of the cylinder 11, the stiffening hoop 15 can synchronously transmit the circumferential stress, avoiding stress concentration or interface slippage caused by separate connections.

[0041] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0042] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A bridge pier reinforcement structure, characterized in that, It includes a steel casing body (10), multiple fixed flanges (12), multiple rotating flanges (13), annular cutting edge (14), and stiffening steel hoop (15); The steel casing body (10) includes multiple cylinders (11), which are connected end to end in sequence, and the multiple cylinders (11) cover the periphery of the splice of the pier body (1). Multiple fixed flanges (12) are disposed at one end of the corresponding cylinder (11); Multiple rotating flanges (13) are disposed at the other end of the corresponding cylinder (11), and the end of the multiple rotating flanges (13) away from the cylinder (11) is fixedly connected to the fixed flange (12) on the adjacent cylinder (11); One end of the annular cutting edge (14) is located at the bottom of the cylinder (11) at the bottom of the pier body (1), and the other end extends downward along the axial length of the cylinder (11). The stiffening steel hoop (15) is fixedly installed around the periphery of the fixed flange (12).

2. The bridge pier reinforcement structure according to claim 1, characterized in that, The fixed flange (12) has a groove (121) with its opening facing the axis on the inner wall of the end away from the cylinder (11). The rotating flange (13) has a slider (131) extending from the inner wall of the end near the fixed flange (12) toward its axis. The circumferential surface of the slider (131) slides in contact with the groove wall of the groove (121).

3. The bridge pier reinforcement structure according to claim 2, characterized in that, The groove (121) includes a vertical section (1211) and a horizontal section (1212). The groove length direction of the vertical section (1211) is consistent with the axial length direction of the cylinder (11), and the groove length direction of the horizontal section (1212) is consistent with the radial direction of the cylinder (11). One end of the horizontal section (1212) is connected to the end of the vertical section (1211) near the cylinder (11).

4. The bridge pier reinforcement structure according to claim 1, characterized in that, The annular cutting edge (14) is provided with multiple grouting pipes (16) embedded inside. Multiple stiffening rods (17) are provided around the periphery of the multiple grouting pipes (16). One end of the stiffening rod (17) is fixed at equal intervals to the periphery of the corresponding grouting pipe (16), and the other end is fixedly connected to the periphery of the adjacent grouting pipe (16).

5. The bridge pier reinforcement structure according to claim 4, characterized in that, The axial length direction of the multiple stiffening rods (17) is set at an angle to the axial length direction of the grouting pipe (16).

6. The bridge pier reinforcement structure according to claim 4, characterized in that, The stiffening steel hoop (15) and the fixed flange (12) are an integral structure.

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