Device and method for dismantling overline simply supported girder bridge through rotation

Abstract

The invention discloses a device and method for dismantling an overline simply supported girder bridge through rotation, and relates to the technical field of bridge dismantling, the device comprises a horizontal positioning spherical hinge arranged on an in-situ buttress, away from a line, below a rotation section, an arc-shaped sliding way, a plurality of supporting feet arranged on the arc-shaped sliding way, and a plurality of supporting feet arranged on the arc-shaped sliding way, 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] The invention relates to the technical field of bridge demolition, and in particular to a device and method for rotating and demolishing a cross-line simply supported beam bridge. Background Art

[0002] The demolition of cross-line bridges is a complex and high-risk engineering activity, especially for cross-line simply supported beam bridges, which have a relatively single stress range and the characteristics of each adjacent span being subjected to separate stresses. They are difficult to demolish as a whole, which can easily affect the normal passage of the lines below and pose certain safety hazards.

[0003] In view of this, how to provide a device and method for dismantling a simply supported beam bridge across a line that can be safe and efficient and avoid affecting the normal passage of the line is an issue that technical personnel in this field urgently need to solve. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for dismantling a simply supported beam bridge by rotation, so as to solve the problems existing in the prior art.

[0005] To achieve the above object, the present invention provides a device for rotating and dismantling a cross-line simply supported beam bridge, wherein the cross-line simply supported beam bridge spans the line and is fixed on an in-situ pier through a support, comprising:

[0006] Horizontally positioned ball joints, the cross-line simply supported beam bridge is divided into the front section of the line, the first section, the second section, and the nth section along the length direction by multiple in-situ piers, and the first section corresponds to the line; at least the first section and the second section of the cross-line simply supported beam bridge are rotation sections, and the remaining cross-line simply supported beam bridges are non-rotation sections, and the horizontally positioned ball joints are arranged on the in-situ piers far away from the line below the rotation section;

[0007] A cutting mechanism, used for cutting and separating the rotating section from the support;

[0008] An arc-shaped slideway is horizontally arranged with the horizontal positioning ball joint as the center of the circle, the arc-shaped slideway is arranged on a temporary pier, and one end of the arc-shaped slideway is connected to the rotating section, and the other end extends in a direction away from the line;

[0009] A plurality of legs are arranged on the arc-shaped slideway, and when the swivel section is cut and separated from the support, the legs and the horizontal positioning ball joint can support the swivel section;

[0010] An integrated connection mechanism, disposed on the upper surface and / or the lower surface of the swivel section and integrally connected to the swivel section;

[0011] A temporary cable tower is arranged 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 swivel mechanism is used to drive the swivel section to move along the arc-shaped slideway in a direction away from the line.

[0013] Furthermore, the integrated connection mechanism includes:

[0014] A plurality of upper cross beams of steel sections, fixedly arranged on the upper surface of the rotating section;

[0015] A plurality of steel lower cross beams, fixedly arranged on the lower surface of the rotating section;

[0016] A plurality of steel longitudinal beams are fixedly arranged on the steel upper cross beam, and the temporary cable tower is connected to the steel longitudinal beams through cables.

[0017] Furthermore, the steel longitudinal beam and the steel upper cross beam are vertically distributed and have an intersection, and the cable is anchored at the intersection.

[0018] Furthermore, the upper cross beam of the steel section and the longitudinal beam of the steel section are connected by one or more of welding, bolt connection, embedded part connection and pin connection.

[0019] Furthermore, a plurality of upper cross beams of steel sections and a plurality of lower cross beams of steel sections are arranged in a one-to-one correspondence in a plurality of groups, wherein one lower cross beam of steel section corresponds to one end of the arc-shaped slideway and is disposed on a support leg.

[0020] Furthermore, it also includes:

[0021] The landing bracket is arranged in the placement area, and the swivel mechanism can drive the swivel section to move along the arc slide in a direction away from the line to the landing bracket.

[0022] Furthermore, the swivel mechanism is composed of a traction rope, a reaction seat and a jack, the traction end of the traction rope is anchored on the swivel section, and the anchoring position is far away from the horizontal positioning ball joint.

[0023] The present invention also provides a method for dismantling a cross-line simply supported beam bridge by rotation, and the device for dismantling a cross-line 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 pier far away from the line below the rotating section. With the preset position of the horizontal positioning ball joint as the center, temporary piers, arc slides and support feet are arranged in sequence along the arc;

[0025] S2: multiple steel upper cross beams and multiple steel lower cross beams are symmetrically arranged on the upper surface and the lower surface of the rotating section, the steel upper cross beams and the steel lower cross beams are fixedly connected to the rotating section by bolts, and steel longitudinal beams are arranged on the steel upper cross beams, and the steel upper cross beams and the steel longitudinal beams are integrally connected;

[0026] S3: Temporary cable towers and cables are arranged on the rotating section, and the steel longitudinal beams are tensioned by the cables;

[0027] S4: The swivel section is separated from the support by a cutting mechanism, and a horizontal positioning ball joint is installed. At this time, the swivel section is supported by the horizontal positioning ball joint and the support legs on the arc slideway;

[0028] S5: The swivel mechanism is connected to the end of the swivel section away from the horizontal positioning ball joint, and the swivel mechanism drives the swivel section to move along the arc slideway in a direction away from the line.

[0029] Furthermore, the first section and the second section of the simply supported beam bridge over the line are used as the rotating sections. In step S1, the arc slide and the support legs are located below the second section and close to the line.

[0030] Furthermore, in step S3, while the swivel segment is tensioned by the cable, a counterweight is applied to the swivel segment corresponding to the horizontal positioning ball joint.

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

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

[0033] 2. The adjacent spans of the simply supported bridge are connected as a whole through an integrated connection mechanism, so that the entire rotating section can be subjected to force together and achieve synchronous rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

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

[0038] Figure 4 This is a schematic diagram of the rotating section before rotation;

[0039] Figure 5 It is a schematic diagram of the rotation process of the rotation section;

[0040] Figure 6 It is a schematic diagram of the rotating section after rotation;

[0041] Among them, 1. Line; 2. Horizontal positioning ball joint; 3. Arc slide; 4. Support legs; 5. Temporary cable tower; 6. Cable; 7. First section; 8. Second section; 9. Temporary piers; 10. In-situ piers; 11. Position bracket; 12. Upper crossbeam of steel; 13. Lower crossbeam of steel; 14. Longitudinal beam of steel; 15. Counterweight. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] The embodiment of the present invention provides a device for rotating and dismantling a cross-line simply supported beam bridge, wherein the cross-line simply supported beam bridge spans a line 1 and is fixed on an in-situ pier 10 through a support, comprising:

[0045] The horizontally positioned ball joint 2, the line-crossing simply supported beam bridge is divided into the front section of line 1 (the front section of line 1 refers to all the line-crossing bridges before crossing line 1, and is located on the left side of the first section 7 in the figure), the first section 7, the second section 8 until the nth section along the length direction (from left to right in the figure) by multiple in-situ piers 10, and the first section 7 corresponds to line 1; the first section 7 and the second section 8 of the line-crossing simply supported beam bridge are the rotation sections, and the other line-crossing simply supported beam bridges are the non-rotation sections, and the horizontally positioned ball joint 2 is arranged on the in-situ pier 10 below the rotation section and away from line 1;

[0046] A cutting mechanism, used for cutting and separating the swivel section from the support, the cutting mechanism can adopt an existing bridge separation mechanism, such as a diamond wire saw cutting mechanism, a hydraulic manager cutting mechanism, etc.;

[0047] The arc slide 3 is horizontally arranged with the horizontal positioning ball joint 2 as the center of the circle. The arc slide 3 is set on the temporary pier 9, and one end of the arc slide 3 is connected to the rotating section, and the other end extends in a direction away from the line 1;

[0048] A plurality of legs 4 are arranged on the arc-shaped slideway 3. When the swivel section is cut and separated from the support, the legs 4 and the horizontal positioning ball joint 2 can support the swivel section and can rotate around the horizontal positioning ball joint 2;

[0049] An integrated connection mechanism is provided on the upper surface and / or the lower surface of the swivel section and is integrally connected to the swivel section;

[0050] A temporary cable tower 5 is arranged 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;

[0051] The swivel mechanism is used to drive the swivel section to move along the arc slide 3 in a direction away from the line 1.

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

[0053] A plurality of steel upper cross beams 12 are fixedly arranged on the upper surface of the rotating section;

[0054] A plurality of steel lower cross beams 13 are fixedly arranged on the lower surface of the rotating section;

[0055] A plurality of steel longitudinal beams 14 are fixedly arranged on the steel upper cross beam 12 , and the temporary cable tower 5 is connected to the steel longitudinal beams 14 via cables 6 .

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

[0057] In this embodiment, the upper cross beam 12 of the steel section and the longitudinal beam 14 of the steel section are connected by one or more of welding, bolt connection, embedded part connection, and pin connection.

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

[0059] In this embodiment, it also includes:

[0060] The positioning bracket 11 is arranged in the placement area, and the swivel mechanism can drive the swivel section to move along the arc slide 3 in a direction away from the line 1 to the positioning bracket 11.

[0061] In this embodiment, the swivel mechanism is composed of a traction rope, a reaction seat and a jack, and the traction end of the traction rope is anchored on the swivel section, and the anchoring position is far away from the horizontal positioning ball joint 2. The swivel mechanism in this embodiment only plays a driving role, and the swivel core structure of the swivel section is still the horizontal positioning ball joint 2, so the swivel mechanism can use any existing driving device that can drive the swivel section to rotate.

[0062] The following specifically describes the method for dismantling a cross-line simply supported beam bridge by rotating it, in combination with the above-mentioned embodiment 1, including the following steps:

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

[0064] S2: multiple steel upper cross beams 12 and multiple steel lower cross beams 13 are symmetrically arranged on the upper surface and the lower surface of the rotating section, the steel upper cross beams 12 are located on the upper surface of the rotating section, and the steel lower cross beams 13 are located on the lower surface of the rotating section, and the two are evenly arranged; vertical fine-rolled threaded steel is passed through the flange plates or hinged seams of each simply supported beam, and bolts are tightened to fasten the steel upper cross beams 12, the rotating section, and the steel lower cross beams 13 into a whole, and steel longitudinal beams 14 are arranged on the steel upper cross beams 12, and the steel upper cross beams 12 and the steel longitudinal beams 14 are integrally connected by bolts;

[0065] S3: Arrange temporary cable towers 5 and cables 6 on the rotating section, tension the steel longitudinal beam 14 through the cables 6, and apply a counterweight 15 to the rotating section corresponding to the horizontal positioning ball joint 2;

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

[0067] S5: The swivel mechanism is connected to the end of the swivel section away from the horizontal positioning ball joint 2, and the swivel section is driven by the swivel mechanism to rotate along the arc slide 3 away from the line 1 with the horizontal positioning ball joint 2 as the center. It should be noted that although the support leg 4 plays the function of supporting the swivel section, there are multiple support legs 4, and they can slide relative to the lower surface of the swivel section, so the swivel section can smoothly slide along the multiple support legs 4 on the arc slide 3 to the outside, and the support legs 4 can be made of high-strength, low-friction resistance materials.

[0068] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0069] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A device for rotating and dismantling a cross-line simply supported beam bridge, wherein the cross-line simply supported beam bridge spans a line (1) and is fixed to an in-situ pier (10) via a support, characterized in that: include: A horizontally positioned spherical joint (2), the cross-line simply supported beam bridge is divided into a front section of the line (1), a first section (7), a second section (8) and up to the nth section along the length direction by a plurality of in-situ piers (10), the first section (7) corresponding to the line (1); at least the first section (7) and the second section (8) of the cross-line simply supported beam bridge are rotating sections, and the remaining cross-line simply supported beam bridges are non-rotating sections, and the horizontally positioned spherical joint (2) is arranged on the in-situ pier (10) below the rotating section and away from the line (1); A cutting mechanism, used for cutting and separating the rotating section from the support; The arc-shaped slideway (3) is horizontally arranged with the horizontal positioning ball joint (2) as the center of the circle, the arc-shaped slideway (3) is arranged on the temporary pier (9), and one end of the arc-shaped slideway (3) is connected to the rotating section, and the other end extends in a direction away from the line (1); A plurality of support legs (4) are arranged on the arc-shaped slideway (3); when the swivel section is cut and separated from the support, the support legs (4) and the horizontal positioning ball joint (2) can support the swivel section; An integrated connection mechanism, disposed on the upper surface and / or the lower surface of the swivel section and integrally connected to the swivel section; A temporary cable tower (5) is arranged 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 swivel mechanism is used to drive the swivel section to move along the arc-shaped slideway (3) in a direction away from the line (1).

2. The device for dismantling a cross-line simply supported beam bridge by rotation according to claim 1, characterized in that: The integrated connection mechanism comprises: A plurality of upper cross beams (12) of shaped steel, fixedly arranged on the upper surface of the rotating section; A plurality of steel lower cross beams (13) fixedly arranged on the lower surface of the rotating section; A plurality of steel longitudinal beams (14) are fixedly arranged on the steel upper cross beam (12), and the temporary cable tower (5) is connected to the steel longitudinal beams (14) via cables (6).

3. The device for dismantling a cross-line simply supported beam bridge by rotation according to claim 2, characterized in that: The steel longitudinal beam (14) and the steel upper cross beam (12) are vertically distributed and have an intersection, and the cable (6) is anchored at the intersection.

4. The device for dismantling a cross-line simply supported beam bridge by rotation according to claim 2, characterized in that: The steel upper cross beam (12) and the steel longitudinal beam (14) are connected by one or more of welding, bolt connection, embedded part connection and pin connection.

5. The device for dismantling a cross-line simply supported beam bridge by rotation according to claim 2, characterized in that: A plurality of upper cross beams (12) and a plurality of lower cross beams (13) are arranged in a one-to-one correspondence in a plurality of groups, wherein one lower cross beam (13) corresponds to one end of the arc-shaped slideway (3) and is arranged on the support foot (4).

6. The device for dismantling a cross-line simply supported beam bridge by rotation according to claim 2, characterized in that: Also includes: The landing bracket (11) is arranged in the placement area, and the swivel mechanism can drive the swivel section to move along the arc-shaped slideway (3) in a direction away from the line (1) to the landing bracket (11).

7. The device for dismantling a cross-line simply supported beam bridge by rotation according to claim 2, characterized in that: The swivel mechanism is composed of a traction rope, a reaction seat and a jack. The traction end of the traction rope is anchored on the swivel section, and the anchoring position is far away from the horizontal positioning ball joint (2).

8. A method for dismantling a cross-line simply supported beam bridge by rotation, characterized in that: The device for dismantling a cross-line simply supported beam bridge by rotating according to any one of claims 2 to 7 comprises the following steps: S1: The preset position of the horizontal positioning ball joint (2) is on the original pier (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, the temporary pier (9), the arc slideway (3) and the support foot (4) are arranged in sequence along the arc; S2: a plurality of steel upper cross beams (12) and a plurality of steel lower cross beams (13) are symmetrically arranged on the upper surface and the lower surface of the rotating section, the steel upper cross beams (12) and the steel lower cross beams (13) are fixedly connected to the rotating section by bolts, a steel longitudinal beam (14) is arranged on the steel upper cross beam (12), and the steel upper cross beam (12) and the steel longitudinal beam (14) are integrally connected; S3: arranging temporary cable towers (5) and cables (6) on the rotating section, and tensioning the steel longitudinal beam (14) through the cables (6); S4: The swivel section is separated from the support by cutting means, and the horizontal positioning ball joint (2) is installed. At this time, the swivel section is supported by the horizontal positioning ball joint (2) and the support legs (4) on the arc-shaped slideway (3); S5: The swivel mechanism is connected to the end of the swivel section away from the horizontal positioning ball joint (2), and the swivel mechanism drives the swivel section to move along the arc-shaped slideway (3) in a direction away from the line (1).

9. The method for dismantling a cross-line simply supported beam bridge by rotation according to claim 8, characterized in that: The first section (7) and the second section (8) of the simply supported beam bridge over the line are used as the rotating sections. In step S1, the arc-shaped slideway (3) and the support leg (4) are located below the second section (8) and close to the line (1).

10. The method for dismantling a cross-line simply supported beam bridge by rotation according to claim 8, characterized in that: In step S3, while the swivel segment is tensioned by the cable (6), a counterweight (15) is applied to the swivel segment corresponding to the horizontal positioning ball joint (2).

Images