Bridge handrail heightening component

Abstract

The utility model discloses a bridge handrail heightening component which comprises anchor bolts, an anchoring steel plate, a steel plate stand column and a steel pipe handrail. The bottom ends of the anchor bolts are connected with an original bridge handrail, the top ends of the anchor bolts are connected with the anchoring steel plates, the anchoring steel plates are connected with the steel plate stand columns, and the upper ends of the steel plate stand columns are connected with the steel pipe handrail. The utility model provides a bridge handrail heightening component which is used for transforming a handrail of an existing bridge, can solve the problems of long construction time, high danger, high pollution, serious waste, high traffic organization and management difficulty and the like caused by dismantling and reconstruction or bar planting heightening, and enables the handrail to be heightened more quickly, simply, conveniently, safely and environmentally friendly.

Description

Technical Field

[0001] The utility model relates to the field of bridges, in particular to a bridge railing heightening component. Background Art

[0002] Existing old bridges usually have the problem of insufficient railing height. In order to avoid accidents caused by insufficient railing height, the part of the bridge railing that is not high enough needs to be raised.

[0003] At present, existing old bridges generally use reinforced concrete flower plate railings or fence railings. The heightening scheme usually adopts chiseling and redoing or adopting embedded reinforcement and adding concrete components to heighten. Because both methods involve the process of embedding reinforcement, tying steel bars, erecting molds, and pouring concrete, especially the long time of embedding reinforcement and waiting for the initial setting of concrete, resulting in a long entire construction period. It is not applicable to the reconstruction of old bridges that are under construction and operation at the same time. This increases the difficulty of management, the danger of construction and passing vehicles and pedestrians, and is not conducive to ensuring the quality of construction. At the same time, chiseling and rebuilding when the existing railings are still intact also increases waste and generates unnecessary garbage and pollution. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is that the existing scheme for raising the railings of old bridges has a long construction period, which is not suitable for the reconstruction of old bridges that are under construction and operation, increasing the difficulty and danger of management, and is not conducive to the guarantee of construction quality; or increasing waste, generating unnecessary garbage and pollution. The utility model provides a bridge railing raising component for reconstructing the railings of existing bridges, which can solve the problems of long construction time, high danger, high pollution, serious waste, high difficulty in traffic organization and management caused by demolition and reconstruction or reinforcement raising, making the railing raising faster, simpler, safer and more environmentally friendly.

[0005] To achieve the above-mentioned purpose, the utility model provides a bridge railing heightening component, including an anchor bolt, an anchor steel plate, a steel plate column and a steel pipe handrail; the bottom end of the anchor bolt is connected to the original bridge railing, the top end is connected to the anchor steel plate, the anchor steel plate is connected to the steel plate column, and the upper end of the steel plate column is connected to the steel pipe handrail.

[0006] Furthermore, the anchor bolt is configured as a chemical anchor bolt, and the top end of the chemical anchor bolt is bolted to the anchor steel plate.

[0007] Furthermore, the anchor bolt is configured as an M10 inverted cone chemical anchor bolt.

[0008] Furthermore, the anchoring steel plate is configured as a rectangular thick steel plate, the anchoring steel plate is connected downwardly to the anchor bolts through the openings, the anchor bolts are anchored into the original railing structure and fixed, and the upper side of the anchoring steel plate is welded to the steel plate column.

[0009] Furthermore, the height of the entire bridge railing heightening component can be adjusted by adjusting the height of the steel plate column.

[0010] Furthermore, the steel plate column is configured to include two parallel steel plates, and the two parallel steel plates constitute a steel plate column.

[0011] Furthermore, the distance between two steel plate columns is not greater than 2m.

[0012] Furthermore, the top of the steel tube handrail is the highest point after the bridge railing is raised, and the distance from the top of the steel tube handrail to the bridge deck or the sidewalk is set to ≥1.1m.

[0013] Furthermore, it also includes end-sealing steel plates, which are arranged at the starting and ending ends of the steel pipe handrail.

[0014] Furthermore, it also includes a steel pipe sleeve, which is arranged at the expansion joint or continuous joint of the steel pipe handrail to prevent the influence of bridge displacement and thermal expansion and contraction of the steel pipe handrail itself.

[0015] Technical Effects

[0016] The utility model provides a bridge railing heightening component, which is used for transforming the railings of existing bridges. It can solve the problems of long construction time, great danger, great pollution, serious waste, and high difficulty in traffic organization and management caused by demolition and reconstruction or planting reinforcement heightening, and makes the railing heightening faster, simpler, safer and more environmentally friendly.

[0017] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic elevation diagram of a pedestrian railing after the transformation of a bridge railing heightening component in a preferred embodiment of the utility model;

[0019] Figure 2 The utility model is a cross-sectional view of a steel pipe handrail of a bridge railing heightening component according to a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] In the following description, specific details such as specific internal procedures and techniques are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0022] like Figure 1-2 As shown, the utility model provides a bridge railing heightening component, including an anchor bolt 1, an anchor steel plate 2, a steel plate column 3 and a steel pipe handrail 4; the bottom end of the anchor bolt 1 is connected to the original bridge railing 5, and the top end is connected to the anchor steel plate 2, the anchor steel plate 2 is connected to the steel plate column 3, and the upper end of the steel plate column 3 is connected to the steel pipe handrail 4.

[0023] Anchor bolt 1 is set as a chemical anchor bolt, and the top of the chemical anchor bolt is bolted to the anchor steel plate. The anchor bolt is set as an M10 inverted cone chemical anchor bolt. In this embodiment, the chemical anchor bolt is used to connect with the old railing structure, which is a key component for connecting the old and new structures. It plays the role of connecting the old structure of the railing and the new heightening component, and transmits the force to the old structure of the railing. The special inverted cone chemical anchor bolt is used because the concrete strength of the old bridge is usually low and the reinforcement is less. If ordinary expansion bolts are used, it is easy to expand and damage the concrete. The special inverted cone chemical anchor bolt is to drill a hole first, and then use a glue gun to squeeze the resin glue into the hole, and then insert the bolt and solidify. Through the reaction between the concrete surface and the cured epoxy resin, a strong connection force is formed, so that the structure can withstand external forces and vibrations; the special inverted cone shape can increase the connection area, make the connection more firm, and prevent loosening and falling off. In the process, no excessive expansion force is generated on the old structure, and the damage to the old structure can be avoided as much as possible.

[0024] In another preferred embodiment of the present invention, ordinary bolts and expansion bolts can be used to replace the special inverted cone chemical anchor bolts.

[0025] The anchoring steel plate 2 is set as a rectangular thick steel plate. The anchoring steel plate is connected to the anchor bolt downward through the opening. The anchor bolt is anchored into the original railing structure to fix the lower side of the anchoring steel plate and the anchor bolt. The upper side of the anchoring steel plate is welded to the steel plate column. The anchoring steel plate is bolted to the chemical anchor bolt at the bottom and welded to the steel plate column at the top, which plays the role of connecting the steel plate column and the old concrete structure of the railing and bearing horizontal and vertical loads, providing stronger stability, higher safety and longer service life for the heightened component.

[0026] The height of the entire bridge railing heightening component is adjusted by adjusting the height of the steel plate column 3. The steel plate column is configured to include two parallel steel plates, and the two parallel steel plates constitute a steel plate column. The spacing between the two steel plate columns is not more than 2m. The steel plate columns are high or low according to the railing form of the old bridge and the size of the column head. During implementation, the height needs to be adjusted according to the actual situation of each bridge. The plane of the steel plate is free in form, and can be rectangular or cut into a variety of forms such as horns. The steel plate column is welded to the anchoring steel plate at the bottom and to the steel pipe handrail at the top, which plays a role in controlling the height of the heightening component and transferring the handrail load. The steel plate column can be horn-shaped, rectangular or other shapes.

[0027] The top of the steel pipe handrail 4 is the highest point after the bridge railing is raised, and the distance from the top of the steel pipe handrail 4 to the bridge deck or the sidewalk 6 is set to be ≥1.1m. It also includes end-sealing steel plates, which are arranged at the start and end ends of the steel pipe handrail. It also includes a steel pipe sleeve, which is arranged at the expansion joint or continuous joint of the steel pipe handrail to prevent the influence of bridge displacement and thermal expansion and contraction of the steel pipe handrail itself. In another preferred embodiment of the utility model, the steel pipe handrail at the expansion joint can also be handled in a disconnected manner.

[0028] When the old railing has no obvious span, the steel pipe handrail is set as a full-length structure; when the old railing is arranged by span and has a column structure that exceeds the handrail height, the steel pipe handrail is generally set as a full-length structure that spans the column, or it can be set according to the span of the original railing. The steel pipe handrail is the top component, welded to the steel plate column at the bottom, and plays the role of a handrail and preventing pedestrians from falling.

[0029] The utility model provides a bridge railing heightening component, and the specific implementation scheme is as follows:

[0030] 1. The processing plant deepens the design, cuts the prefabricated steel plates and steel pipe handrails according to the design drawings, positions and punches holes for the anchor steel plates, welds the columns and anchor steel plates, and performs the primer coating in the factory;

[0031] 2. After arriving at the site, drill holes for special inverted cone-shaped chemical anchor bolts, and weld steel pipe handrails and columns;

[0032] 3. Apply topcoat to steel components on site to prevent corrosion;

[0033] 4. Open traffic.

[0034] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A bridge railing heightening component, characterized in that: It includes anchor bolts, anchor steel plates, steel plate columns and steel pipe handrails; the bottom end of the anchor bolt is connected to the original bridge railing, the top end is connected to the anchor steel plate, the anchor steel plate is connected to the steel plate column, and the upper end of the steel plate column is connected to the steel pipe handrail.

2. A bridge railing heightening component according to claim 1, characterized in that: The anchor bolt is configured as a chemical anchor bolt, and the top end of the chemical anchor bolt is bolted to the anchor steel plate.

3. A bridge railing heightening component as claimed in claim 2, characterized in that: The anchor bolt is configured as an M10 inverted cone chemical anchor bolt.

4. A bridge railing heightening component according to claim 1, characterized in that: The anchoring steel plate is configured as a rectangular thick steel plate, the anchoring steel plate is connected to the anchor bolt downward through an opening, the anchor bolt is anchored into the original railing structure and fixed, and the upper side of the anchoring steel plate is welded to the steel plate column.

5. The bridge railing heightening component according to claim 1, characterized in that: The height of the entire bridge railing heightening component can be adjusted by adjusting the height of the steel plate column.

6. A bridge railing heightening component as claimed in claim 5, characterized in that: The steel plate column is configured to include two parallel steel plates, and the two parallel steel plates constitute one steel plate column.

7. A bridge railing heightening component as claimed in claim 5, characterized in that: The distance between the two steel plate columns is no more than 2m.

8. The bridge railing heightening component according to claim 1, characterized in that: The top of the steel tube handrail is the highest point after the bridge railing is raised, and the distance from the top of the steel tube handrail to the bridge deck or the sidewalk is set to be ≥1.1m.

9. A bridge railing heightening component as claimed in claim 8, characterized in that: It also includes end-sealing steel plates, which are arranged at the starting and ending ends of the steel pipe handrail.

10. A bridge railing heightening component according to claim 9, characterized in that: It also includes a steel pipe sleeve, which is arranged at the expansion joint or continuous joint of the steel pipe handrail to prevent the bridge from being displaced and the influence of thermal expansion and contraction of the steel pipe handrail itself.

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