Conical steel hoop structure for bridge jacking engineering

Abstract

The utility model relates to a conical steel hoop structure for a bridge jacking project. The conical steel hoop structure comprises a hoop steel belt (1) and a bracket vertical plate (2), a steel plate tray (3) and a steel inclined rib (4) are arranged on the hoop steel belt (1); a bracket panel (5) and a reinforcing rib plate (6) are arranged on the bracket vertical plate (2), and a transverse reserved hole (7) is formed in the bracket vertical plate (2); the hoop steel belts (1) and the bracket vertical plates (2) form half hoop structures, and the two same half hoop structures are bolted and fixed into a complete conical steel hoop structure through high-strength bolts (8) by means of transverse reserved holes (7) formed in the bracket vertical plates (2). According to the conical steel hoop structure, the safety and the anti-sliding stability of the structure are improved in the using process.

Description

Technical Field

[0001] The utility model belongs to the field of civil engineering and belongs to a conical steel hoop structure used in bridge jacking engineering. Background Art

[0002] With the rapid development of China's economy, the scope of engineering construction has been continuously expanded. As a special support structure that is recyclable, easy to disassemble, and does not damage the original structure, the steel hoop support structure is highly recognized in bridge jacking projects. This support structure can not only save costs, but also make construction more convenient. In the existing bridge construction, steel hoops are mainly used as temporary brackets to support the cap beam formwork system. According to the shape of the pier, steel hoops can be divided into rectangular steel hoops and circular steel hoops, and circular steel hoops are generally the most common.

[0003] Steel hoop is usually composed of two half hoop structures connected by high-strength bolts to work together as a whole. The pre-tightening force is applied to the structure by twisting the high-strength bolts. During the process of tightening the bolts, pre-tension will be generated in the steel belt of the hoop, so that the hoop structure fits tightly against the surface of the pier. Due to the existence of the friction coefficient on the surface of the pier, the steel hoop structure generates friction to resist sliding during the bridge jacking project.

[0004] In long-term theoretical analysis and engineering practice, it is found that the pre-tension force increases significantly in the process of being transferred to the middle of the steel band of the hoop, while the pre-tension force increase lags behind near the steel hoop bracket. In addition, in the jacking project, the steel hoop bracket mainly contacts the upper jacking member to transfer vertical stress. Due to the lag in the pre-tension force increase of this part, the steel hoop bracket part has insufficient resistance and expands outward, forming an open mouth shape, which causes uneven force on the whole steel hoop structure and reduces the anti-slip stability. Utility Model Content

[0005] In view of the deficiencies of the above-mentioned existing problems, the utility model provides a conical steel hoop structure for use in bridge jacking projects. On the basis of the original steel hoop structure, steel oblique ribs are provided on the outer side of the hoop steel belt, and a steel plate tray is provided above the steel oblique ribs. During the construction process, the steel plate tray increases the original force-bearing area, making the force on the structure more uniform. At the same time, the steel oblique ribs play a reinforcing role, making the structure safer and more reliable, and significantly improving the anti-slip stability of the steel hoop structure.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a conical steel hoop structure used in bridge jacking projects, including a hoop steel belt and a corbel vertical plate; the hoop steel belt is provided with a steel plate tray and steel oblique ribs; the corbel vertical plate is provided with a corbel panel, a reinforcing rib plate, and transverse reserved holes; the hoop steel belt and the corbel vertical plate form a semi-hoop structure, with the help of the transverse reserved holes provided on the corbel vertical plate, and two identical semi-hoop structures are bolted and fixed into a complete conical steel hoop structure by high-strength bolts.

[0007] The cross section of the hoop steel belt is circular (this example is mainly circular, but not limited to this), the radius of the hoop steel belt matches the pier column, the height is 40cm to 50cm, and the thickness is 2cm.

[0008] The steel oblique ribs are arranged on the surface of the hoop steel belt at four equal intervals. The height of the steel oblique ribs is 30cm to 40cm, the length is 1 / 3 to 1 / 4 of the height, and the thickness is 2cm.

[0009] The steel plate pallet is an arc-shaped structure with a thickness of 1 cm to 2 cm. The inner side is located on the side of the hoop steel belt, and the lower surface is located above the steel oblique ribs. The width of the steel plate pallet at the joint is greater than the length of the steel oblique ribs.

[0010] The corbel vertical plate has the same height as the hoop steel belt, a width of 40cm to 45cm, a thickness of 2cm, a corbel panel and a reinforcing rib plate are provided on the side, and two rows of horizontal reserved holes are provided.

[0011] The corbel panel and the reinforcing ribs are of the same trapezoidal shape, with a thickness of 1cm to 2cm, a height of 30cm to 35cm, an upper bottom width of 5cm to 10cm, and a lower bottom located on the side of the hoop steel belt with a width of 10cm to 20cm.

[0012] The transverse reserved holes are staggered between the corbel panels and the reinforcing ribs, the hole spacing is 10cm to 15cm, the hole diameter is 2.5cm to 3cm, and the nominal diameter of the high-strength bolts matches the hole diameter.

[0013] The hoop steel belt and the corbel vertical plate are welded to form a half hoop structure, and two identical half hoop structures are bolted and fixed to form a complete conical steel hoop structure by high-strength bolts.

[0014] Beneficial effects of the utility model:

[0015] The content of the utility model is a conical steel hoop structure used in bridge jacking projects. The steel hoop support structure is a special support structure that is recyclable, easy to disassemble, and will not damage the original structure. It is highly recognized in bridge jacking projects. This support structure can not only save costs, but also make construction more convenient. On the basis of the original steel hoop structure, steel diagonal ribs are provided on the outside of the hoop steel belt, and a steel plate tray is provided above the steel diagonal ribs. During the construction process, the steel plate tray increases the original force-bearing area, making the structure more evenly stressed. At the same time, the steel diagonal ribs play a role of reinforcement, making the structure safer and more reliable, and significantly improving the anti-slip stability of the steel hoop structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of a conical steel hoop;

[0017] Figure 2 It is a structural schematic diagram of a half hoop structure;

[0018] Figure 3 It is a structural diagram of a steel hoop corbel structure;

[0019] In the attached drawings, 1 is a hoop steel belt; 2 is a corbel vertical plate; 3 is a steel plate tray; 4 is a steel diagonal rib; 5 is a corbel panel; 6 is a reinforcing rib plate; 7 is a transverse reserved hole; and 8 is a high-strength bolt. DETAILED DESCRIPTION

[0020] In order to have a deeper understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are described with reference to the following drawings.

[0021] Please refer to the attached Figure 1 ~Attached Figure 3 In an example of the utility model, a conical steel hoop structure for use in bridge jacking projects is provided, including a hoop steel belt 1 and a corbel vertical plate 2; the hoop steel belt 1 is provided with a steel plate tray 3 and a steel oblique rib 4; the corbel vertical plate 2 is provided with a corbel panel 5, a reinforcing rib 6, and a transverse reserved hole 7; the hoop steel belt 1 and the corbel vertical plate 2 form a semi-hoop structure, with the help of the transverse reserved holes 7 provided on the corbel vertical plate 2, and the two identical semi-hoop structures are bolted and fixed to form a complete conical steel hoop structure by high-strength bolts 8.

[0022] The cross section of the hoop steel belt 1 is circular (this example is mainly circular, but not limited to this), the radius of the hoop steel belt 1 matches the pier, the height is 40cm to 50cm, and the thickness is 2cm.

[0023] The steel oblique ribs 4 are arranged on the surface of the clamping steel belt 1 at four equal intervals. The height of the steel oblique ribs 4 is 30 cm to 40 cm, the length is 1 / 3 to 1 / 4 of the height, and the thickness is 2 cm.

[0024] The steel plate pallet 3 is an arc-shaped structure with a thickness of 1 cm to 2 cm. The inner side is located on the side of the hoop steel belt 1, and the lower surface is located above the steel oblique rib 4. The width of the steel plate pallet 3 at the connection is greater than the length of the steel oblique rib 4.

[0025] The corbel vertical plate 2 has the same height as the hoop steel belt 1 , a width of 40 cm to 45 cm, a thickness of 2 cm, a corbel panel 5 and a reinforcing rib 6 are provided on the side, and two rows of transverse reserved holes 7 are provided.

[0026] The corbel panel 5 and the reinforcing rib 6 are of the same trapezoidal shape, with a thickness of 1 cm to 2 cm, a height of 30 cm to 35 cm, an upper bottom width of 5 cm to 10 cm, and a lower bottom located on the side of the hoop steel belt 1 with a width of 10 cm to 20 cm.

[0027] The transverse reserved holes 7 are staggered between the corbel panel 5 and the reinforcing rib 6, the hole spacing is 10cm-15cm, the hole diameter is 2.5cm-3cm, and the nominal diameter of the high-strength bolts 8 matches the hole diameter.

[0028] The hoop steel belt 1 and the corbel vertical plate 2 are welded to form a half hoop structure, and the two identical half hoop structures are bolted and fixed to form a complete conical steel hoop structure by high-strength bolts 8.

[0029] The present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modification and substitution of the present invention is also within the scope of the present invention. Therefore, any equivalent transformation and modification made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A conical steel hoop structure for use in bridge jacking engineering, comprising a hoop steel belt (1) and a corbel vertical plate (2); characterized in that: The hoop steel belt (1) is provided with a steel plate tray (3) and steel oblique ribs (4); the corbel vertical plate (2) is provided with a corbel panel (5), a reinforcing rib plate (6), and a transverse reserved hole (7); the hoop steel belt (1) and the corbel vertical plate (2) form a semi-hoop structure, and by means of the transverse reserved hole (7) provided on the corbel vertical plate (2), two identical semi-hoop structures are bolted and fixed to form a complete conical steel hoop structure by high-strength bolts (8).

2. The conical steel hoop structure used in bridge jacking engineering according to claim 1 is characterized in that: The cross section of the hoop steel belt (1) is circular, the radius of the hoop steel belt (1) matches the pier column, the height is 40cm to 50cm, and the thickness is 2cm.

3. The conical steel hoop structure used in bridge jacking engineering according to claim 1 is characterized in that: The steel oblique ribs (4) are arranged on the surface of the hoop steel belt (1) at four equal intervals. The height of the steel oblique ribs (4) is 30 cm to 40 cm, the length is 1 / 3 to 1 / 4 of the height, and the thickness is 2 cm.

4. The conical steel hoop structure used in bridge jacking engineering according to claim 1 is characterized in that: The steel plate tray (3) is an arc-shaped structure with a thickness of 1 cm to 2 cm. The inner side is located on the side of the hoop steel belt (1), and the lower surface is located above the steel oblique rib (4). The width of the steel plate tray (3) at the joint is greater than the length of the steel oblique rib (4).

5. The conical steel hoop structure used in bridge jacking engineering according to claim 1 is characterized in that: The corbel vertical plate (2) has the same height as the hoop steel belt (1), a width of 40 cm to 45 cm, a thickness of 2 cm, a corbel panel (5) and a reinforcing rib plate (6) on the side, and two rows of transverse reserved holes (7).

6. The conical steel hoop structure used in bridge jacking engineering according to claim 1 is characterized in that: The corbel panel (5) and the reinforcing rib (6) are of the same trapezoidal shape, with a thickness of 1 cm to 2 cm, a height of 30 cm to 35 cm, an upper bottom width of 5 cm to 10 cm, and a lower bottom located on the side of the hoop steel belt (1) with a width of 10 cm to 20 cm.

7. The conical steel hoop structure used in bridge jacking engineering according to claim 1 is characterized in that: The transverse reserved holes (7) are staggered between the corbel panel (5) and the reinforcing rib (6), the hole spacing is 10cm to 15cm, the hole diameter is 2.5cm to 3cm, and the nominal diameter of the high-strength bolt (8) matches the hole diameter.

8. The conical steel hoop structure used in bridge jacking engineering according to claim 1 is characterized in that: The hoop steel strip (1) and the corbel vertical plate (2) are welded to form a semi-hoop structure, and two identical semi-hoop structures are bolted and fixed to form a complete conical steel hoop structure by high-strength bolts (8).

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