Replacement assembly of existing box girder anti-falling device

Abstract

The utility model discloses a replacement assembly of an existing box girder anti-falling device, which comprises two groups of replacement anchoring parts, the vertical projection directions of the replacement anchoring parts are arranged in an array, and the action directions of the working parts of the replacement anchoring parts are opposite in pairs. The opposite replacement anchoring parts of the working parts are arranged on the upper surface of the same transverse position of the same bridge abutment, and the tops of the replacement anchoring parts are connected with the same beam body. The two replacement anchoring parts with the same working parts acting in the same direction are arranged on the upper surface of the same longitudinal position of the same bridge abutment, and the tops of the replacement anchoring parts are connected with two different beam bodies. Compared with an existing anti-beam-falling structure of the railway bridge, the anti-beam-falling structure of the railway bridge has the advantages that the design concept of'conquering with flexibility and rigidity 'is adopted, serious damage caused by collision of a beam body is reduced, and the anti-beam-falling structure is simple and practical in structure and convenient to install and construct.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bridge beam fall prevention, especially to a replacement assembly of existing box girder beam fall prevention device. BACKGROUND

[0002] Under the action of external force (such as earthquake, wind, automobile impact, etc.), the beam body will displace on the supporting structure, in order to prevent the beam body from falling due to displacement, a beam fall prevention structure is arranged between the beam body and the abutment to limit the displacement of the beam body.

[0003] At present, the domestic beam fall prevention device structure is mainly block type and cable type. The block type beam fall prevention device is arranged between the beam and the pier, and the function is to prevent the beam from displacing horizontally or vertically under the action of earthquake force and other loads. The device is connected with the beam fall prevention block embedded part during installation, and is usually installed beside the support, close to the line center line side. The suspended installation is only to prevent the horizontal or vertical displacement of the beam, and is not a load-bearing structure. The cable type beam fall prevention device is composed of cable chains and connecting rod devices. The cable chains are connected between the main beam and the pier to limit the large horizontal displacement of the upper beam body and prevent beam fall. The slits on the surface of the connecting rod device can consume part of the earthquake energy through tensile deformation, thereby reducing the damage of other components of the bridge.

[0004] No matter the block type or the cable type beam fall prevention structure, the strength design concept, i.e. the "hard collision" method, is used to solve the problem of beam fall prevention. This type of beam fall prevention has the following problems: large impact force, increased weight of the structure, large space, high cost, and poor matching with seismic isolation bearings.

[0005] Therefore, the replacement assembly of existing box girder beam fall prevention device is needed to solve the above problems. SUMMARY

[0006] The utility model discloses to solve the problem that no matter the block type or the cable type beam fall prevention structure, the strength design concept, i.e. the "hard collision" method, is used to solve the problem of beam fall prevention. This type of beam fall prevention has the following problems: large impact force, increased weight of the structure, large space, high cost, and poor matching with seismic isolation bearings. The utility model provides a replacement assembly of existing box girder beam fall prevention device, which solves the problem of the prior art.

[0007] The utility model provides a replacement assembly of existing box girder beam fall prevention device, including two groups of replacement anchoring piece, replacement anchoring piece is in vertical projection direction array arrangement, and the working part direction of replacement anchoring piece is opposite to each other, and the upper surface of the same horizontal position of the same abutment and the top of two different beam bodies are connected with the same beam body between the opposite replacement anchoring piece of working part, and the upper surface of the same longitudinal position of the same abutment and the top of two different beam bodies are connected with two replacement anchoring pieces of the same longitudinal position of the same abutment;

[0008] The replacement anchoring piece comprises an upper anchoring group, a lower anchoring group, a first pad plate, a second pad plate and a U-shaped steel, the upper anchoring group is anchored on the bottom surface of the beam body, the lower anchoring group is anchored on the upper surface of the abutment, the upper anchoring group and the lower anchoring group are arranged at the same vertical projection position, the first pad plate is arranged on the lower surface of the upper anchoring group, the second pad plate is arranged on the upper surface of the lower anchoring group, the U-shaped steel is arranged horizontally, one side outer plane of the U-shaped steel is in contact with the bottom surface of the first pad plate and is bolted with the first pad plate and the upper anchoring group, the other side outer plane of the U-shaped steel is in contact with the top surface of the second pad plate and is bolted with the second pad plate and the lower anchoring group, the upper anchoring group is a bent anchoring, and the lower anchoring group is a vertical variable-diameter anchoring.

[0009] The utility model discloses a kind of existing box girder anti-falling beam device replacement components, as preferred mode, upper anchoring group includes upper anchor plate and several anchor hooks, upper anchor plate is the plate structure with screw hole in bottom surface, upper anchor plate is arranged in the inside of beam body lower surface, upper anchor plate lower surface is coplanar with the lower surface of beam body, anchor hook is vertically arranged on the upper surface of upper anchor plate and is buried in the inside of beam body, anchor hook is vertical rod structure, anchor hook top end is provided with the bent rod portion of bending angle not less than ninety degrees, the vertical rod portion of anchor hook is smoothly connected with the bending part of anchor hook.

[0010] The utility model discloses a kind of existing box girder anti-falling beam device replacement components, as preferred mode, lower anchoring group includes lower anchor plate and several anchor rods, lower anchor plate is the plate structure with screw hole in top surface, lower anchor plate is arranged in the inside of abutment upper surface, lower anchor plate upper surface is coplanar with the upper surface of abutment, anchor rod is rod structure, anchor rod is arranged on the lower surface of lower anchor plate and is buried in the inside of abutment, anchor rod is rod structure, anchor rod upper half is uniformly provided with several radial protrusions, radial protrusion is flat cylindrical structure, radial protrusion is coaxial with the rod structure of anchor rod, anchor rod bottom end is provided with bottom protrusion with radial protrusion equal diameter and coaxial.

[0011] The utility model has the beneficial effects as follows:

[0012] Compared with the existing railway bridge anti-falling beam structure, the technical scheme adopts the design concept of "soft overcomes hard", reduces the serious damage caused by the collision of the beam body, and has the advantages of simple structure, practicality, easy installation and construction. DRAWINGS

[0013] Figure 1 It is a kind of existing box girder anti-falling beam device replacement component schematic view;

[0014] Figure 2 It is a kind of existing box girder anti-falling beam device replacement component replacement anchoring piece schematic view;

[0015] Figure 3 It is a kind of existing box girder anti-falling beam device replacement component upper anchoring group schematic view;

[0016] Figure 4This is a schematic diagram of the lower anchorage group of a replacement component for an existing box girder anti-fall device.

[0017] Figure label:

[0018] 1. Replacement anchors; 11. Upper anchoring assembly; 111. Upper anchor plate; 112. Anchor hook; 12. Lower anchoring assembly; 121. Lower anchor plate; 122. Anchor bolt; 13. First pad; 14. Second pad; 15. U-shaped steel. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example 1

[0020] like Figure 1 As shown, a replacement component for an existing box girder anti-falling device includes two sets of replacement anchors 1. The replacement anchors 1 are arranged in an array in the vertical projection direction. The working directions of the replacement anchors 1 are opposite to each other in pairs. The replacement anchors 1 with opposite working directions are set on the same transverse position on the upper surface of the same abutment and connected to the same beam body at the top. Two replacement anchors 1 with the same working direction are set on the same longitudinal position on the upper surface of the same abutment and connected to two different beam bodies at the top.

[0021] like Figure 2 As shown, the replacement anchor 1 includes an upper anchoring group 11, a lower anchoring group 12, a first pad 13, a second pad 14, and a U-shaped steel 15. The upper anchoring group 11 is anchored to the bottom surface of the beam, and the lower anchoring group 12 is anchored to the upper surface of the bridge abutment. The upper anchoring group 11 and the lower anchoring group 12 are located at the same vertical projection position. The first pad 13 is located on the lower surface of the upper anchoring group 11, and the second pad 14 is located on the upper surface of the lower anchoring group 12. The U-shaped steel 15 is horizontally arranged. One outer plane of the U-shaped steel 15 contacts the bottom surface of the first pad 13 and is bolted to the first pad 13 and the upper anchoring group 11. The other outer plane of the U-shaped steel 15 contacts the top surface of the second pad 14 and is bolted to the second pad 14 and the lower anchoring group 12. The upper anchoring group 11 is a bent anchoring, and the lower anchoring group 12 is a vertical variable diameter anchoring.

[0022] like Figure 3 As shown, the upper anchoring assembly 11 includes an upper anchor plate 111 and several anchor hooks 112. The upper anchor plate 111 is a plate structure with screw holes on the bottom surface. The upper anchor plate 111 is set inside the lower surface of the beam. The lower surface of the upper anchor plate 111 is coplanar with the lower surface of the beam. The anchor hooks 112 are vertically set on the upper surface of the upper anchor plate 111 and embedded inside the beam. The anchor hooks 112 are vertical rod structures. The top of the anchor hook 112 is provided with a bent rod part with a bending angle of not less than 90 degrees. The vertical rod part of the anchor hook 112 is smoothly connected to the bent part of the anchor hook 112.

[0023] As shown in Figure 4 The lower anchoring group 12 includes a lower anchor plate 121 and a plurality of anchor rods 122, the lower anchor plate 121 is a plate structure with screw holes on the top surface, the lower anchor plate 121 is arranged inside the upper surface of the abutment, the upper surface of the lower anchor plate 121 is coplanar with the upper surface of the abutment, the anchor rod 122 is a rod structure, the anchor rod 122 is arranged in the lower surface of the lower anchor plate 121 and buried in the inside of the abutment, the anchor rod 122 is a rod structure, a plurality of radial protrusions are uniformly arranged on the upper half of the anchor rod 122, the radial protrusion is a flat cylindrical structure, the radial protrusion is coaxial with the rod structure of the anchor rod 122, and the bottom end of the anchor rod 122 is provided with a bottom protrusion with the same diameter and coaxial with the radial protrusion.

[0024] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A replacement component for an existing box girder anti-falling device, characterized in that: The application relates to a bridge anchor replacement device, which comprises two groups of replacement anchors (1) arranged in an array, the working parts of the replacement anchors (1) being opposite to each other, the replacement anchors (1) with opposite working parts being arranged on the same horizontal position of the upper surface of the same abutment and being connected to the same beam body at the top, and two replacement anchors (1) with the same working part direction being arranged on the same longitudinal position of the upper surface of the same abutment and being connected to two different beam bodies at the top. The replacement anchor (1) comprises an upper anchor group (11), a lower anchor group (12), a first pad plate (13), a second pad plate (14) and a U-shaped steel (15), the upper anchor group (11) is anchored on the bottom surface of the beam body, the lower anchor group (12) is anchored on the upper surface of the abutment, the upper anchor group (11) and the lower anchor group (12) are arranged at the same vertical projection position, the first pad plate (13) is arranged on the lower surface of the upper anchor group (11), the second pad plate (14) is arranged on the upper surface of the lower anchor group (12), the U-shaped steel (15) is arranged horizontally, one side of the U-shaped steel (15) is in contact with the bottom surface of the first pad plate (13) and is bolted with the first pad plate (13) and the upper anchor group (11), the other side of the U-shaped steel (15) is in contact with the top surface of the second pad plate (14) and is bolted with the second pad plate (14) and the lower anchor group (12), the upper anchor group (11) is a bent anchor, and the lower anchor group (12) is a vertical variable-diameter anchor.

2. The replacement assembly for a fall-prevention device for an existing box girder according to claim 1, wherein: The upper anchor group (11) comprises an upper anchor plate (111) and a plurality of anchor hooks (112), the upper anchor plate (111) is a plate structure with screw holes in the bottom surface, the upper anchor plate (111) is arranged inside the lower surface of the beam body, the lower surface of the upper anchor plate (111) is coplanar with the lower surface of the beam body, the anchor hooks (112) are vertically arranged on the upper surface of the upper anchor plate (111) and are embedded in the beam body, the anchor hooks (112) are vertical rod structures, the top end of the anchor hooks (112) is provided with a bent rod part with a bending angle of not less than 90 degrees, and the vertical rod part of the anchor hooks (112) is smoothly connected with the bent part of the anchor hooks (112).

3. The replacement assembly for a fall-prevention device for an existing box girder according to claim 1, wherein: The lower anchor group (12) comprises a lower anchor plate (121) and a plurality of anchor rods (122), the lower anchor plate (121) is a plate structure with screw holes in the top surface, the lower anchor plate (121) is arranged inside the upper surface of the abutment, the upper surface of the lower anchor plate (121) is coplanar with the upper surface of the abutment, the anchor rods (122) are rod structures, the anchor rods (122) are arranged on the lower surface of the lower anchor plate (121) and are embedded in the abutment, the anchor rods (122) are rod structures, a plurality of radial protrusions are uniformly arranged on the upper half of the anchor rods (122), the radial protrusions are flat cylindrical structures, the radial protrusions are coaxial with the rod structures of the anchor rods (122), and the bottom end of the anchor rods (122) is provided with a bottom protrusion with the same diameter and coaxial with the radial protrusions.

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