Device for dismantling overline simply supported girder bridge by rotating body

Abstract

The utility model discloses a device for dismantling an overline simply supported girder bridge by rotating, which relates to the technical field of bridge dismantling, and comprises a horizontal positioning spherical hinge, an arc-shaped slideway, a plurality of supporting legs, a plurality of supporting legs and a plurality of supporting legs, after the rotating body section and the support are cut and separated, the supporting foot and the horizontal positioning spherical hinge can support the rotating body section, the integrated connecting mechanism is integrally connected with the rotating body section, the temporary cable bent tower is arranged on the rotating body section, and the rotating body mechanism is used for driving the rotating body section to move in the direction away from a line along the arc-shaped sliding way. The overline simply supported girder bridge is split into the rotating body section and the non-rotating body section, the supporting mechanism is reformed through the horizontal positioning spherical hinge, the annular sliding way and the supporting foot, the rotating body mechanism drives the rotating body section to move in the direction away from a line along the arc-shaped sliding way to the position where the line is not affected, and then disassembly and disassembly work is conducted. Lines below the bridge can be completely avoided in the construction process.

Description

Technical Field

[0001] This utility model relates to the field of bridge demolition technology, and in particular to a device for rotating and demolishing a simply supported beam bridge overpass. Background Technology

[0002] Demolition of bridges spanning railway lines is a complex and high-risk engineering activity, especially for simply supported beam bridges that span railway lines. Their stress range is relatively simple, and adjacent bridge spans are subjected to individual forces, making them difficult to demolish as a whole. This can easily affect the normal passage of the lines below and pose certain safety hazards.

[0003] In view of this, how to provide a safe and efficient device and method for dismantling simply supported beam bridges that cross railway lines without affecting normal traffic is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a device for rotating and dismantling a simply supported beam bridge overpass, in order to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides a device for rotating and dismantling a simply supported beam bridge that crosses a railway line. The simply supported beam bridge crosses the railway line and is fixed to the original piers by supports. The device includes:

[0006] The horizontal positioning ball joint is used in the overpass simply supported beam bridge, which is divided into the front section, the first section, the second section and up to the nth section along the length direction by multiple in-situ piers. The first section corresponds to the line. At least the first and second sections of the overpass simply supported beam bridge are the rotating sections, and the rest of the overpass simply supported beam bridge are the non-rotating sections. The horizontal positioning ball joint is set on the in-situ pier below the rotating section and away from the line.

[0007] The cutting mechanism is used to cut and separate the rotating section from the support;

[0008] An arc-shaped slide is arranged horizontally with the horizontal positioning ball joint as the center. The arc-shaped slide is set on a temporary support, and one end of the arc-shaped slide is connected to the rotating section, while the other end extends away from the track.

[0009] Multiple support legs are provided on the arc-shaped slide. When the rotating section is cut and separated from the support, the support legs and the horizontal positioning ball joint can support the rotating section.

[0010] An integrated connecting mechanism is disposed on the upper and / or lower surfaces of the rotating segment and is integrally connected to the rotating segment;

[0011] A temporary cable tower is installed on the rotating section. When the rotating section is cut and separated from the support, the temporary cable tower can tension the rotating section through cables.

[0012] The rotating mechanism is used to drive the rotating section to move away from the track along the arc-shaped slide.

[0013] Furthermore, the integrated connection mechanism includes:

[0014] Multiple steel upper crossbeams are fixedly installed on the upper surface of the rotating section;

[0015] Multiple steel crossbeams are fixedly installed on the lower surface of the rotating section;

[0016] Multiple steel longitudinal beams are fixedly installed on the upper crossbeam of the steel section, and the temporary cable tower is connected to the steel longitudinal beams by cables.

[0017] Furthermore, the longitudinal beams of the steel profile are perpendicularly distributed to the upper crossbeam of the steel profile and have an intersection point, and the cable is anchored at the intersection point.

[0018] Furthermore, the upper crossbeam and the longitudinal beam of the steel profile are connected by one or more of the following methods: welding, bolting, embedded parts, and pin connection.

[0019] Furthermore, multiple sets of upper and lower steel crossbeams are arranged in a one-to-one correspondence, with one of the lower steel crossbeams corresponding to one end of the arc-shaped slide and set on the support foot.

[0020] Furthermore, it also includes:

[0021] A positioning bracket is provided in the placement area. The rotating mechanism can drive the rotating section to move along the arc-shaped slide away from the line to the positioning bracket.

[0022] Furthermore, the rotating mechanism consists of a traction cable, a reaction seat, and a jack. The traction end of the traction cable is anchored to the rotating section, and the anchoring position is far away from the horizontal positioning ball joint.

[0023] This utility model also provides a method for dismantling a simply supported beam bridge by rotation, which, using the aforementioned device for dismantling a simply supported beam bridge by rotation, includes the following steps:

[0024] S1: The preset position of the horizontal positioning ball joint is on the original support pier far away from the track below the rotating section. With the preset position of the horizontal positioning ball joint as the center, temporary supports, arc-shaped slides and support feet are arranged in sequence along the arc.

[0025] S2: Multiple upper steel beams and multiple lower steel beams are symmetrically arranged on the upper and lower surfaces of the rotating section. The upper and lower steel beams are fixedly connected to the rotating section by bolts. Steel longitudinal beams are arranged on the upper steel beams. The upper steel beams and steel longitudinal beams are integrally connected.

[0026] S3: Temporary pylons and cables are installed on the rotating section, and the steel longitudinal beams are tensioned through the cables;

[0027] S4: The rotating section is cut and separated from the support by the cutting mechanism, and the horizontal positioning ball joint is installed. At this time, the rotating section is supported by the horizontal positioning ball joint and the support feet on the arc slide.

[0028] S5: The rotating mechanism is connected to the end of the rotating section away from the horizontal positioning ball joint, and the rotating mechanism drives the rotating section to move away from the line along the arc-shaped slide.

[0029] Furthermore, taking the first and second sections of the overpass simply supported beam bridge as the rotating sections, in step S1, the arc-shaped slide and support feet are located below the second section and close to the track.

[0030] Furthermore, in step S3, while tensioning the rotating segment with cables, a counterweight is applied to the rotating segment corresponding to the horizontal positioning ball joint.

[0031] The present invention discloses the following technical effects:

[0032] 1. The simply supported beam bridge is divided into a rotating section and a non-rotating section corresponding to the railway line. After the rotating section is cut and separated from the support, the support mechanism is reassembled through horizontal positioning ball joints, annular slides and support feet. The rotating mechanism drives the rotating section to move away from the railway line along the arc slide to a position that does not affect the railway line before dismantling and demolition. The construction process can completely avoid the railway line under the bridge. The normal traffic of the line is not affected during the bridge demolition, which greatly improves safety and convenience.

[0033] 2. By using an integrated connecting mechanism, adjacent spans of the simply supported bridge are connected into a whole, so that the entire rotating section can share the force and achieve synchronous rotation. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a structural layout diagram of the present invention before the support is removed;

[0036] Figure 2 This is a structural layout diagram of the present invention after the support is removed;

[0037] Figure 3 This is a temporary side view of the cable tower.

[0038] Figure 4 This is a schematic diagram of the body rotation segment before rotation;

[0039] Figure 5 This is a schematic diagram of the rotation process of the rotating segment;

[0040] Figure 6 This is a schematic diagram of the rotating segment after rotation;

[0041] The components include: 1. Track; 2. Horizontal positioning ball joint; 3. Arc-shaped slide; 4. Support leg; 5. Temporary cable tower; 6. Cable; 7. First section; 8. Second section; 9. Temporary support pier; 10. In-situ support pier; 11. Positioning support; 12. Upper steel crossbeam; 13. Lower steel crossbeam; 14. Longitudinal steel beam; 15. Counterweight. Detailed Implementation

[0042] 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 embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] This utility model embodiment provides a device for rotating and dismantling a simply supported beam bridge that crosses a railway line 1 and is fixed to the original pier 10 by supports. The device includes:

[0045] The horizontal positioning ball hinge 2 is used to divide the simply supported beam bridge into the following sections along the length direction (from left to right in the attached diagram): the front section of line 1 (the front section of line 1 refers to all the overpasses before crossing line 1, located to the left of the first section 7 in the attached diagram), the first section 7, the second section 8, and so on up to the nth section. The first section 7 corresponds to line 1. The first section 7 and the second section 8 of the simply supported beam bridge are the rotating sections, and the remaining simply supported beam bridges are the non-rotating sections. The horizontal positioning ball hinge 2 is set on the in-situ support 10 below the rotating section, away from line 1.

[0046] The cutting mechanism is used to cut and separate the rotating section from the support. The cutting mechanism can be an existing bridge body separation mechanism, such as a diamond wire saw cutting mechanism, a hydraulic cutting mechanism, etc.

[0047] The arc-shaped slide 3 is arranged horizontally with the horizontal positioning ball joint 2 as the center. The arc-shaped slide 3 is set on the temporary support 9, and one end of the arc-shaped slide 3 is connected to the rotating section, while the other end extends away from the line 1.

[0048] Multiple support legs 4 are set on the arc-shaped slide rail 3. When the rotating section is cut and separated from the support, the support legs 4 and the horizontal positioning ball joint 2 can support the rotating section and can rotate around the horizontal positioning ball joint 2 as the center.

[0049] An integrated connecting mechanism is provided on the upper and / or lower surfaces of the rotating section and is integrally connected to the rotating section;

[0050] Temporary pylon 5 is installed on the rotating section. After the rotating section is cut and separated from the support, temporary pylon 5 can tension the rotating section through cable 6.

[0051] The rotating mechanism is used to drive the rotating section to move away from the track 1 along the arc-shaped slide 3.

[0052] In this embodiment, the integrated connection mechanism includes:

[0053] Multiple steel upper crossbeams 12 are fixedly installed on the upper surface of the rotating section;

[0054] Multiple steel crossbeams 13 are fixedly installed on the lower surface of the rotating section;

[0055] Multiple steel longitudinal beams 14 are fixedly installed on the upper steel crossbeam 12, and the temporary cable tower 5 is connected to the steel longitudinal beams 14 by cables 6.

[0056] In this embodiment, the longitudinal steel beam 14 and the upper steel beam 12 are perpendicularly distributed and have an intersection point, and the cable 6 is anchored at the intersection point.

[0057] In this embodiment, the upper crossbeam 12 and the longitudinal beam 14 of the steel profile are connected by one or more of the following methods: welding, bolting, embedded parts, and pin connection.

[0058] In this embodiment, multiple sets of upper steel beams 12 and lower steel beams 13 are arranged in a one-to-one correspondence, and one of the lower steel beams 13 corresponds to one end of the arc-shaped slide 3 and is set on the support leg 4.

[0059] In this embodiment, it also includes:

[0060] The placement bracket 11 is located in the placement area. The rotating mechanism can drive the rotating section to move along the arc-shaped slide 3 in a direction away from the line 1 to the placement bracket 11.

[0061] In this embodiment, the rotating mechanism consists of a traction cable, a reaction seat, and a jack. The traction end of the traction cable is anchored to the rotating section, and the anchoring position is far away from the horizontal positioning ball joint 2. In this embodiment, the rotating mechanism only plays a driving role. The core rotating structure of the rotating section is still the horizontal positioning ball joint 2. Therefore, the rotating mechanism can use any existing drive device capable of driving the rotating section to rotate.

[0062] The following describes the method for rotating and dismantling a simply supported beam bridge overpass, in conjunction with the above-described Example 1, including the following steps:

[0063] S1: The preset position of the horizontal positioning ball joint 2 is on the original support 10 far away from the line 1 below the rotating section. With the preset position of the horizontal positioning ball joint 2 as the center, temporary support 9, arc slide 3 and support foot 4 are arranged in sequence along the arc. The arc slide 3 and support foot 4 are located below the second section 8 and close to the line 1. The temporary support 9 where the arc slide 3 is located is adjacent to the original support 10 on the right side of the first section 7.

[0064] S2: Multiple upper steel beams 12 and multiple lower steel beams 13 are symmetrically arranged on the upper and lower surfaces of the rotating section. The upper steel beams 12 are located on the upper surface of the rotating section, and the lower steel beams 13 are located on the lower surface of the rotating section. The two are evenly arranged. Vertical precision-rolled threaded steel bars are passed through the flange plates or hinge joints of each simply supported beam. The bolts are tightened to fasten the upper steel beams 12, the rotating section, and the lower steel beams 13 into a whole. Steel longitudinal beams 14 are arranged on the upper steel beams 12. The upper steel beams 12 and the steel longitudinal beams 14 are connected together by bolts.

[0065] S3: Temporary pylons 5 and cables 6 are arranged on the rotating section. The steel longitudinal beam 14 is tensioned by the cables 6. At the same time, counterweights 15 are applied to the rotating section corresponding to the horizontal positioning ball joint 2.

[0066] S4: The rotating section is cut and separated from the support by the cutting mechanism, and the horizontal positioning ball joint 2 is installed. At this time, the rotating section is supported by the horizontal positioning ball joint 2 and the support foot 4 on the arc slide 3.

[0067] S5: The rotating mechanism is connected to the end of the rotating section away from the horizontal positioning ball joint 2. The rotating mechanism drives the rotating section to rotate around the horizontal positioning ball joint 2 along the arc-shaped slide 3 in a direction away from the line 1. It should be noted that although the support feet 4 serve to support the rotating section, there are multiple support feet 4, and they can slide relative to the lower surface of the rotating section. Therefore, the rotating section can smoothly slide outward along the multiple support feet 4 on the arc-shaped slide 3. The support feet 4 can be made of a high-strength, low-friction-resistance material.

[0068] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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. Therefore, they should not be construed as limitations on this utility model.

[0069] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for rotating and dismantling a simply supported beam bridge over a railway line, the simply supported beam bridge crossing the railway line (1) and fixed to the original pier (10) by supports, characterized in that, include: The horizontal positioning ball hinge (2) is used to divide the cross-line simply supported beam bridge into the front section, the first section (7), the second section (8) and up to the nth section along the length direction by multiple in-situ piers (10). The first section (7) corresponds to the line (1). At least the first section (7) and the second section (8) of the cross-line simply supported beam bridge are the rotating sections, and the rest of the cross-line simply supported beam bridges are the non-rotating sections. The horizontal positioning ball hinge (2) is set on the in-situ pier (10) below the rotating section, away from the line (1). The cutting mechanism is used to cut and separate the rotating section from the support; The arc-shaped slide (3) is arranged horizontally with the horizontal positioning ball joint (2) as the center. The arc-shaped slide (3) is set on the temporary support (9), and one end of the arc-shaped slide (3) is connected to the rotating section, while the other end extends away from the line (1). Multiple support legs (4) are provided on the arc-shaped slide (3). When the rotating section is cut and separated from the support, the support legs (4) and the horizontal positioning ball joint (2) can support the rotating section. An integrated connecting mechanism is disposed on the upper and / or lower surfaces of the rotating segment and is integrally connected to the rotating segment; A temporary cable tower (5) is installed on the rotating section. When the rotating section is cut and separated from the support, the temporary cable tower (5) can tension the rotating section through the cable (6). The rotating mechanism is used to drive the rotating section to move away from the track (1) along the arc-shaped slide (3).

2. The device for rotating and dismantling a simply supported beam bridge according to claim 1, characterized in that, The integrated connection mechanism includes: Multiple steel upper crossbeams (12) are fixedly installed on the upper surface of the rotating section; Multiple steel lower crossbeams (13) are fixedly installed on the lower surface of the rotating section; Multiple steel longitudinal beams (14) are fixedly installed on the upper steel crossbeam (12), and the temporary cable tower (5) is connected to the steel longitudinal beams (14) via cables (6).

3. The device for rotating and dismantling a simply supported beam bridge overpass according to claim 2, characterized in that, The longitudinal steel beam (14) and the upper steel beam (12) are perpendicularly distributed and have an intersection point, and the cable (6) is anchored at the intersection point.

4. The device for rotating and dismantling a simply supported beam bridge overpass according to claim 2, characterized in that, The upper crossbeam (12) and the longitudinal beam (14) of the steel profile are connected by one or more of the following methods: welding, bolting, embedded parts, and pin connection.

5. The device for rotating and dismantling a simply supported beam bridge overpass according to claim 2, characterized in that, Multiple sets of upper steel beams (12) and lower steel beams (13) are arranged in a one-to-one correspondence. One of the lower steel beams (13) corresponds to one end of the arc-shaped slide (3) and is set on the support foot (4).

6. The device for rotating and dismantling a simply supported beam bridge overpass according to claim 2, characterized in that, Also includes: The placement bracket (11) is located in the placement area. The rotating mechanism can drive the rotating section to move along the arc-shaped slide (3) away from the line (1) to the placement bracket (11).

7. The device for rotating and dismantling a simply supported beam bridge according to claim 2, characterized in that, The rotating mechanism consists of a traction cable, a reaction seat, and a jack. The traction end of the traction cable is anchored to the rotating section, and the anchoring position is far away from the horizontal positioning ball joint (2).

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