Hoop structure of single-column pier bridge steel cover beam

Abstract

The hoop structure comprises a stand column and a steel hoop, a through key groove is formed in the outer side wall of the upper end of the stand column, the steel hoop is arranged on the outer side wall of the upper end of the stand column in a sleeved mode, a gap is reserved between the steel hoop and the stand column, grouting materials are poured into the gap to form a connecting layer, and a shear key is arranged on the inner wall of the steel hoop. The connecting structure has the beneficial effects of improving the shear resistance and the overall stability of a connecting interface, reducing the slippage risk and the like.

Description

Technical Field

[0001] The utility model relates to a hoop structure, in particular to a hoop structure for a steel cap beam of a single-column pier bridge, and belongs to the technical field of bridge engineering. Background Art

[0002] In the current bridge engineering construction, due to the limitations of bridge height, geological and topographic conditions, some bridges adopt a single-column pier and steel cap beam structure. During the construction of the pier and cap beam, hoop is often used as a temporary load-bearing structure, relying on the friction between the hoop and the pier body to bear the load transmitted from above. Therefore, the connection strength between the hoop and the concrete column directly affects the bearing capacity and safety of the upper cap beam.

[0003] For example, a "clamp jack support system construction device" disclosed in Chinese patent literature, with publication number CN213836320U, includes a pier column and a cap beam. The outer surface of the pier column is sleeved with a clamp, and both ends of the clamp are welded with a bracket. The outer surface of the bracket is fixed with a high-strength bolt. The upper surface of the bracket is fixed with a jack, and the output end of the jack is abutted against an I-beam. Small beams are evenly fixed on the upper surface of the I-beam, and the upper surface of the small beam is provided with a cap beam. During use of this support system, the clamp will be subjected to a large axial force. When the upper load is large, the friction between the clamp and the pier column is insufficient to withstand the upper load force, and sometimes the clamp will slip off the pier column, posing a safety hazard to construction. Utility Model Content

[0004] The utility model mainly aims at solving the problems of insufficient shear force transmission and easy slippage at the connection interface between the hoop and the concrete column in the prior art, and provides a hoop structure for the steel cap beam of a single-column pier bridge to improve the shear resistance and overall stability of the connection interface.

[0005] The purpose of this utility model is mainly achieved through the following solutions:

[0006] A hoop structure for a steel cap beam of a single-column pier bridge comprises a column and a steel hoop, wherein the outer wall of the upper end of the column is provided with a through keyway, the steel hoop is sleeved on the outer wall of the upper end of the column and a gap is left between the steel hoop and the column, grouting material is poured into the gap to form a connecting layer, and a shear key is provided on the inner wall of the steel hoop.

[0007] Preferably, the lower end of the steel hoop is fixedly connected to a bottom sealing plate, a first through hole is provided in the middle of the bottom sealing plate, and the inner wall of the first through hole is tightly fitted with the outer wall of the column.

[0008] Preferably, the upper end of the steel hoop is fixedly connected to a top plate, a second through hole is provided in the middle of the top plate, and a gap for grouting is left between the inner wall of the second through hole and the outer wall of the column.

[0009] Preferably, support pads are symmetrically provided on the left and right sides of the upper surface of the top plate.

[0010] Preferably, decorative panels are symmetrically provided on the left and right sides of the steel hoop, the upper ends of the decorative panels are connected to the lower surface of the top plate, and the side walls of the decorative panels are provided with support reinforcement ribs, and the upper ends of the support reinforcement ribs are connected to the lower surface of the top plate.

[0011] Preferably, the through key slots are arranged transversely, and a plurality of key slots are arranged uniformly along the circumference of the axis of the column.

[0012] Preferably, the through key slots are provided with multiple layers along the height direction of the column.

[0013] Preferably, the shear keys are welded to the inner wall of the steel hoop, and a plurality of shear keys are evenly arranged along the axis of the steel hoop.

[0014] Preferably, the shear keys are provided with multiple layers along the height direction of the steel hoop.

[0015] Preferably, the grouting material is self-compacting concrete mortar.

[0016] Therefore, compared with the prior art, the present invention has the following advantages:

[0017] (1) The utility model provides a column and a steel hoop, and a certain gap is left between the column and the steel hoop for filling with grouting material. The grouting material can be fully filled and hardened to form a solid connection layer, thereby ensuring the connection stability between the column and the steel hoop;

[0018] (2) The utility model is provided with a through keyway on the outer wall of the column and a shear key on the inner wall of the steel hoop, which increases the contact area between the column, the steel hoop and the grouting material, so that a great friction force is generated between the column and the steel hoop, thereby improving the shear resistance of the connection interface and reducing the risk of slippage;

[0019] (3) The utility model has a simple structure, is easy to construct, has reliable force bearing, and is low in cost, and has good economy and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the connection between the steel hoop and the column in the utility model;

[0022] Figure 3yes Figure 1 Cross-sectional view in the middle DD direction;

[0023] Figure 4 It is a top view of the present utility model.

[0024] Illustration: 1-column, 2-steel hoop, 3-through keyway, 4-gap, 5-shear key, 6-bottom sealing plate, 7-top plate, 8-support pad, 9-decorative plate, 10-support reinforcement rib. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the technical solution of the present invention through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any form of modification and / or change made to the present invention will fall within the scope of protection of the present invention.

[0026] In this utility model, unless otherwise specified, all parts and percentages are by weight. The equipment and raw materials used are commercially available or commonly used in the art. The methods in the following embodiments, unless otherwise specified, are conventional methods in the art. The components or equipment in the following embodiments, unless otherwise specified, are all common standard parts or components known to those skilled in the art. Their structures and principles are known to those skilled in the art through technical manuals or routine experimental methods.

[0027] Example 1:

[0028] like Figure 1-4 As shown, the utility model provides a technical solution, a hoop structure of a steel cap beam of a single-column pier bridge, comprising a column 1 and a steel hoop 2, a through keyway 3 being provided on the outer wall of the upper end of the column 1, the steel hoop 2 being sleeved on the outer wall of the upper end of the column 1 and leaving a gap 4 between the steel hoop 2 and the column 1, grouting material being poured into the gap 4 to form a connecting layer, the width of the gap 4 being sufficient to accommodate the poured grouting material, and a shear key 5 being provided on the inner wall of the steel hoop 2 to enhance the shear resistance of the connection interface.

[0029] Example 2:

[0030] like Figure 1-4 As shown, the utility model provides another technical solution, a hoop structure for a steel cap beam of a single-column pier bridge, which is different from Example 1 in that a bottom sealing plate 6 is welded to the lower end of the steel hoop 2, and a first through hole is provided in the middle of the bottom sealing plate 6. The inner wall of the first through hole fits tightly with the outer wall of the column 1, and the first through hole is coaxially arranged with the column 1 to ensure the uniformity of the grouting material filling.

[0031] Specifically, a top plate 7 is welded to the upper end of the steel hoop 2 , a second through hole is provided in the middle of the top plate 7 , and a gap for grouting is left between the inner wall of the second through hole and the outer wall of the column 1 .

[0032] Specifically, support plates 8 are symmetrically bolted or bonded to the left and right sides of the upper surface of the top plate 7 .

[0033] Specifically, decorative panels 9 are symmetrically welded on the left and right sides of the steel hoop 2, and the upper end of the decorative panel 9 is welded and fixed to the lower surface of the top plate 7. A plurality of support reinforcement ribs 10 are welded to the side wall of the decorative panel 9, and the upper end of the support reinforcement rib 10 is welded and fixed to the lower surface of the top plate 7.

[0034] Example 3:

[0035] like Figure 1-4 As shown, the utility model provides another technical solution, a hoop structure for a steel cap beam of a single-column pier bridge, which is different from Example 1 in that the above-mentioned through key slots 3 are arranged horizontally, and multiple through key slots 3 are arranged evenly circumferentially along the axis of the column 1, and the through key slots 3 are provided with multiple layers along the height direction of the column 1. In this embodiment, the through key slots 3 adopt a trapezoidal structure, and the opening position of the through key slots 3 is the longer bottom side of the trapezoidal structure.

[0036] Specifically, the shear keys 5 are welded to the inner wall of the steel hoop 2 , and a plurality of shear keys 5 are evenly arranged along the axis of the steel hoop 2 circumference, and the shear keys 5 are arranged in multiple layers along the height direction of the steel hoop 2 .

[0037] Example 4:

[0038] like Figure 1 As shown, the utility model provides another technical solution, a hoop structure for a steel cap beam of a single-column pier bridge, which is different from Example 1 in that the grouting material adopts self-compacting concrete mortar, and C60 self-compacting concrete mortar is adopted in this embodiment; the prepared concrete mortar is poured into the gap 4 through the pouring port reserved at the upper end, and properly vibrated to ensure that the mortar fully fills the keyway and the gap, and a solid connection layer is formed after the mortar hardens, which firmly connects the steel hoop 2 to the concrete column 1.

[0039] The utility model provides a clamp structure for the steel cap beam of a single-column pier bridge. Through the arrangement of columns and steel clamps, a certain gap is left between the columns and the steel clamps for filling grouting material. The grouting material can be fully filled and hardened to form a solid connection layer, thereby ensuring the connection stability between the column and the steel clamp. The utility model is provided with a through keyway on the outer wall of the column and a shear key on the inner wall of the steel clamp, which increases the contact area between the column, the steel clamp and the grouting material, thereby generating great friction between the column and the steel clamp, improving the shear resistance of the connection interface, and reducing the risk of slippage. The utility model has a simple structure, convenient construction, reliable force, low cost, and good economy and practicality.

[0040] It should be understood that the embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A hoop structure for a steel cap beam of a single-column pier bridge, characterized by: The utility model comprises a column (1) and a steel hoop (2), wherein the outer wall of the upper end of the column (1) is provided with a through keyway (3), the steel hoop (2) is sleeved on the outer wall of the upper end of the column (1) and a gap (4) is left between the steel hoop and the column (1), grouting material is poured into the gap (4) to form a connecting layer, and a shear key (5) is provided on the inner wall of the steel hoop (2).

2. The hoop structure of the steel cap beam of a single-column pier bridge according to claim 1 is characterized in that: The lower end of the steel hoop (2) is fixedly connected to a bottom sealing plate (6), and a first through hole is provided in the middle of the bottom sealing plate (6), and the inner wall of the first through hole is tightly fitted with the outer wall of the column (1).

3. The hoop structure of the steel cap beam of a single-pillar pier bridge according to claim 2 is characterized in that: The upper end of the steel hoop (2) is fixedly connected to a top plate (7), and a second through hole is provided in the middle of the top plate (7), with a gap for grouting being left between the inner wall of the second through hole and the outer wall of the column (1).

4. The hoop structure of the steel cap beam of a single-pillar pier bridge according to claim 3 is characterized by: Support pads (8) are symmetrically provided on the left and right sides of the upper surface of the top plate (7).

5. The hoop structure of the steel cap beam of a single-pillar pier bridge according to claim 4 is characterized in that: Decorative panels (9) are symmetrically provided on the left and right sides of the steel hoop (2), the upper ends of the decorative panels (9) are connected to the lower surface of the top plate (7), and the side walls of the decorative panels (9) are provided with support reinforcement ribs (10), and the upper ends of the support reinforcement ribs (10) are connected to the lower surface of the top plate (7).

6. The hoop structure of the steel cap beam of a single-pillar pier bridge according to claim 1 is characterized in that: The through key slots (3) are arranged transversely, and a plurality of them are evenly arranged along the circumference of the axis of the column (1).

7. The hoop structure of the steel cap beam of a single-pillar pier bridge according to claim 6 is characterized in that: The through key slots (3) are provided with multiple layers along the height direction of the column (1).

8. The hoop structure of the steel cap beam of a single-pillar pier bridge according to claim 7, characterized in that: The shear keys (5) are welded to the inner wall of the steel hoop (2), and a plurality of shear keys (5) are evenly arranged along the circumference of the axis of the steel hoop (2).

9. The hoop structure of the steel cap beam of a single-pillar pier bridge according to claim 8, characterized in that: The shear keys (5) are provided with multiple layers along the height direction of the steel hoop (2).

10. The hoop structure of the steel cap beam of a single-pillar pier bridge according to claim 1, characterized in that: The grouting material adopts self-compacting concrete mortar.

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