Construction main pier foundation of railway large-span swivel T-shaped bridge

Abstract

The utility model discloses a construction main pier foundation of a railway large-span swivel T-shaped bridge, which relates to the technical field of large-span swivel T-shaped bridges and comprises a lower turntable, traction counter-force seats are fixedly connected to four ends of the top surface of the lower turntable, hydraulic jacks are fixedly connected to the outer sides of the traction counter-force seats, and a swivel component is arranged at the upper end of the lower turntable. According to the utility model, the hydraulic jack is convenient to apply a couple to provide power for the rotation action; the upper spherical hinge is conveniently pulled to rotate through the pulling cable, and the turning purpose is achieved; the upper turntable is conveniently supported through the supporting column, so that the stability of the upper turntable is improved; the traction cable is conveniently fixed to the upper spherical hinge through the anchorage device, the friction force between the upper spherical hinge and the lower spherical hinge is conveniently reduced through the lubricating block, and starting, stopping and posture fine adjustment of the rotating body are facilitated through the jack counter-force base. And through cooperation of the whole rotation assemblies, rotation is finally achieved, and the construction target is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of large-span rotary T-structure bridges, in particular to a main pier foundation for the construction of a large-span rotary T-structure bridge for railways. Background Art

[0002] A rotating bridge is a bridge constructed using the rotation method. Bridge rotation construction refers to a construction method in which the bridge structure is formed (by casting or splicing) in a position other than the design axis and then rotated into place. It can transform operations above obstacles into operations on shore or near the ground. According to the direction of rotation of the bridge structure, it can be divided into vertical rotation construction method, horizontal rotation construction method (referred to as vertical rotation method and horizontal rotation method), and a combination of horizontal and vertical rotation methods, of which the horizontal rotation method is the most widely used. It is mainly used in situations where support is not available, such as crossing canyons, rivers, railways, and highways. The rotation system of a rotating bridge consists of a lower turntable, an upper turntable, a ball joint, a slideway, and a traction system. The rotation process is generally achieved by using hydraulic jacks to pull the traction cables to generate a rotational force to achieve rotation. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a main pier foundation for the construction of a railway large-span rotary T-structure bridge.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a main pier foundation for the construction of a large-span rotating T-shaped railway bridge, including a lower turntable, the four ends of the top surface of the lower turntable are fixedly connected to traction reaction seats, the outer side of the traction reaction seats is fixedly connected to a hydraulic jack, and a rotating assembly is provided at the upper end of the lower turntable.

[0005] Preferably, the swivel assembly includes a pier body provided at the upper end of the lower turntable, and weight-reducing holes are provided on both sides of the upper end of the pier body.

[0006] Preferably, the swivel assembly further comprises a lower ball joint installed in the middle of the top surface of the lower turntable, a plurality of lubrication blocks are equidistantly installed on the top surface of the lower ball joint, and a positioning steel pin is rotatably connected to the middle of the top surface of the lower ball joint.

[0007] Preferably, an annular slider is installed on the outer side of the lower ball joint, and a plurality of equidistant support columns are installed on the circumference of the top surface of the annular slider. An upper turntable is installed above the support column, and the upper turntable is fixedly connected to the positioning steel pin shaft, and the top surface of the upper turntable is fixedly connected to the pier body, and a plurality of jack reaction seats are equidistantly installed on the outer side of the annular slider.

[0008] Preferably, an upper ball joint is horizontally provided at the upper end of the lower ball joint, the upper ball joint is fixedly connected to a positioning steel pin shaft, and a plurality of equidistant connection holes are opened on the circumference of the top surface of the upper ball joint.

[0009] Preferably, a traction rope is connected to the inner side of the traction reaction seat, one end of the traction rope passes through the traction reaction seat and is connected to the output shaft of the hydraulic jack, and the other end of the traction rope passes through the connecting hole and is fixed with an anchor.

[0010] Preferably, the outer side of the middle portion of the traction rope abuts against the outer side surface of one side support column.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention facilitates the application of a force couple through the hydraulic jack to serve as the power for the rotation action; facilitates the rotation of the upper ball joint through the traction rope; facilitates the support of the upper turntable through the support column to increase the stability of the upper turntable; facilitates the fixing of the traction rope on the upper ball joint through the anchor, facilitates the reduction of the friction between the upper ball joint and the lower ball joint through the lubrication block, and facilitates the start, stop and posture fine-tuning of the rotation through the jack reaction seat; and ultimately realizes the rotation and achieves the construction goal through the coordination between the overall swivel components. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed by the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the swivel assembly proposed in the present utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the lower ball joint proposed in the utility model;

[0016] Figure 4 This is an enlarged schematic diagram of the structure of part A proposed by the utility model;

[0017] Figure 5 This is an enlarged schematic diagram of the structure of part B proposed in the utility model.

[0018] Serial numbers in the figure: 1. Lower turntable; 2. Traction reaction seat; 3. Hydraulic jack; 4. Traction rope; 5. Upper turntable; 6. Jack reaction seat; 7. Pier body; 8. Support column; 9. Annular slider; 10. Upper ball joint; 11. Positioning steel pin; 12. Anchor; 13. Lower ball joint; 14. Lubrication block. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example: See Figure 1-5 The main pier foundation for the construction of a large-span rotating T-structure bridge for railways in the present invention includes a lower turntable 1, the four ends of the top surface of the lower turntable 1 are fixedly connected with traction reaction seats 2, the outer side of the traction reaction seats 2 is fixedly connected with a hydraulic jack 3, and the upper end of the lower turntable 1 is provided with a swivel assembly, and a force couple is applied to the swivel assembly through the hydraulic jack 3; the swivel assembly includes a pier body 7 arranged at the upper end of the lower turntable 1, and weight reduction holes are opened on both sides of the upper end of the pier body 7, which facilitate weight reduction of the pier body 7 through the weight reduction holes; the swivel assembly also includes a lower ball joint 13 installed in the middle of the top surface of the lower turntable 1, and a plurality of lubrication blocks 14 are equidistantly installed on the top surface of the lower ball joint 13, which facilitate reducing the friction between the upper ball joint 10 and the lower ball joint 13 through the lubrication blocks 14; and a positioning steel pin shaft 11 is rotatably connected to the middle of the top surface of the lower ball joint 13.

[0021] In the present invention, an annular slider 9 is installed on the outside of the lower ball joint 13, and a plurality of equidistant support columns 8 are installed on the circumference of the top surface of the annular slider 9. An upper turntable 5 is installed above the support column 8. The upper turntable 5 is fixedly connected to the positioning steel pin shaft 11, and the top surface of the upper turntable 5 is fixedly connected to the pier body 7. A plurality of jack reaction seats 6 are equidistantly installed on the outside of the annular slider 9. The jack reaction seats 6 are used to conveniently control the start, stop, and posture fine-tuning of the rotating body. An upper ball joint 10 is horizontally provided on the upper end of the lower ball joint 13. The upper ball joint 10 is fixedly connected to the positioning steel pin shaft 11, and a plurality of equidistant connection holes are opened on the circumference of the top surface of the upper ball joint 10: a traction rope 4 is connected to the inner side of the traction reaction seat 2, one end of the traction rope 4 passes through the traction reaction seat 2 and is connected to the output shaft of the hydraulic jack 3, and the other end of the traction rope 4 passes through the connecting hole and is fixedly connected to an anchor 12, and the outer side of the middle part of the traction rope 4 abuts against the outer side surface of the support column 8 on one side.

[0022] Working principle: When using the present invention, first connect the wires to all electrical equipment and power on, the hydraulic jack 3 starts to run automatically, pulling the traction rope 4. The traction rope 4 changes the direction of force under the influence of the jack reaction seat 6, and starts to pull the upper ball joint 10 to rotate slowly, wherein the anchor block ensures that the traction rope 4 is firmly connected to the upper ball joint 10, and the lubrication block 14 between the upper ball joint 10 and the lower ball joint 13 plays a role in reducing friction; the upper turntable 5 starts to rotate under the drive of the upper ball joint 10, and the pier body 7 above the upper turntable 5 also rotates to achieve the rotation target, wherein the support column 8 plays the role of supporting the upper turntable 5; after a period of rotation, the pier body 7 reaches near the target angle, at this time the hydraulic jack 3 is adjusted to manual mode, and the angle is started to be fine-tuned. After the manual fine-tuning of the angle is completed, the hydraulic jack 3 is turned off, and all electrical equipment is powered off; after the rotation of the pier body 7 is completed, the upper ball joint 10 and the lower ball joint 13 need to be sealed with concrete to ensure the stability of the rotating structure.

[0023] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A main pier foundation for the construction of a railway long-span rotating T-shaped bridge, comprising a lower turntable (1), characterized in that: The four ends of the top surface of the lower turntable (1) are fixedly connected to traction reaction seats (2), the outer side of the traction reaction seats (2) is fixedly connected to a hydraulic jack (3), and the upper end of the lower turntable (1) is provided with a rotating assembly; The rotating body assembly comprises a pier body (7) arranged at the upper end of the lower rotating disk (1), and weight-reducing holes are provided on both sides of the upper end of the pier body (7); The swivel assembly further comprises a lower ball joint (13) mounted in the middle of the top surface of the lower turntable (1), a plurality of lubrication blocks (14) are equidistantly mounted on the top surface of the lower ball joint (13), and a positioning steel pin shaft (11) is rotatably connected to the middle of the top surface of the lower ball joint (13).

2. The main pier foundation for the construction of a railway long-span rotating T-shaped bridge according to claim 1, characterized in that: An annular slider (9) is installed on the outer side of the lower ball joint (13), and a plurality of equidistant support columns (8) are installed on the circumference of the top surface of the annular slider (9). An upper turntable (5) is installed above the support column (8), and the upper turntable (5) is fixedly connected to the positioning steel pin shaft (11), and the top surface of the upper turntable (5) is fixedly connected to the pier body (7). A plurality of jack reaction seats (6) are installed equidistantly on the outer side of the annular slider (9).

3. The main pier foundation for the construction of a railway long-span rotating T-shaped bridge according to claim 1, characterized in that: An upper ball joint (10) is horizontally provided at the upper end of the lower ball joint (13), the upper ball joint (10) is fixedly connected to a positioning steel pin shaft (11), and a plurality of equidistant connection holes are opened on the circumference of the top surface of the upper ball joint (10).

4. The main pier foundation for the construction of a railway long-span rotating T-shaped bridge according to claim 1, characterized in that: A traction rope (4) is connected to the inner side of the traction reaction seat (2), one end of the traction rope (4) passes through the traction reaction seat (2) and is connected to the output shaft of the hydraulic jack (3), and the other end of the traction rope (4) passes through the connecting hole and is fixedly connected to an anchor (12).

5. The main pier foundation for the construction of a railway long-span rotating T-shaped bridge according to claim 4, characterized in that: The outer side of the middle portion of the traction rope (4) abuts against the outer side surface of a side support column (8).

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