Protection device of height-limiting bridge

Abstract

The utility model discloses a height-limiting bridge protection device which is installed on a small box girder, the small box girder comprises a small box girder bottom plate and a small box girder web plate, the protection device comprises protection steel plates and fixing pressing strips, the protection steel plates are tightly arranged at the bottom of the small box girder bottom plate, side plates attached to the small box girder web plate are arranged on the two sides of the protection steel plates, and the fixing pressing strips are arranged on the side plates. The fixing pressing strips are arranged at the upper ends of the side plates at intervals, the tops of the side plates are connected with the bottoms of the fixing pressing strips in a welded mode, and the fixing pressing strips have three different heights. According to the protection device of the height-limiting bridge, the bottom plate of the small box can be protected, the bottom plate of the small box is prevented from being scratched or damaged by vehicles, and the traffic safety of the bridge is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge engineering, and in particular relates to a protective device for a height-limited bridge. Background Art

[0002] With the densification of traffic network, bridge structures often cross existing roads. Depending on the road grade and functional requirements, the height of passing vehicles is sometimes restricted. When vehicles are driving on such roads, due to insufficient estimation of height or lack of height restriction measures, vehicles often touch the bottom of the bridge, causing scratches or damage to the bridge structure, affecting the safety quality of the bridge. In order to avoid damage caused by vehicles being too high and scratching the bridge, a protective device for height-limited bridges is urgently needed to solve the above problems and ensure road traffic safety.

[0003] Technical solution:

[0004] A protective device for a height-limited bridge is installed on a small box girder, the small box girder includes a small box girder bottom plate and a small box girder web plate, the protective device includes a protective steel plate and a fixed pressure strip, the protective steel plates are closely arranged at the bottom of the small box girder bottom plate, side plates that fit the small steel girder web plate are arranged on both sides of the protective steel plate, the upper ends of the side plates are spaced apart with the fixed pressure strips, the tops of the side plates are welded to the bottoms of the fixed pressure strips, and the fixed pressure strips include three different heights;

[0005] Furthermore, the protective steel plate is connected to the bottom plate of the small box beam by adhesive bonding, and the bottom plate of the small box beam needs to be roughened on the surface before the protective steel plate is bonded.

[0006] Furthermore, the fixed pressure strip is anchored on the web of the small box beam by bolts; a bolt hole is reserved on the top of the fixed pressure strip, and corresponding bolt holes are arranged on the web of the small box beam; the bolt holes on the web of the small steel beam need to avoid the steel strands in the small box beam.

[0007] Furthermore, the protective steel plate and the fixed pressure strip are welded into a whole, and the bolts pass through the reserved holes on the fixed pressure strip and are anchored on the web of the small box beam. Utility Model Content

[0008] The purpose of the utility model is to overcome the deficiencies in the prior art, to solve the problem of bridge structure safety caused by vehicle scratches on the bottom of a height-limited bridge beam, and to provide a protective device for a height-limited bridge to avoid the risk of scratches or damage to the bottom of the bridge caused by vehicles being too high, thereby ensuring the safety of the bridge structure.

[0009] The purpose of this utility model is achieved through the following technical solutions:

[0010] A protective device for a height-limited bridge is installed on a small box girder. The small box girder includes a small box girder bottom plate and a small box girder web. The protective device includes a protective steel plate and a fixed pressure strip. The protective steel plates are closely arranged at the bottom of the small box girder bottom plate. Side plates that fit the small steel girder web are provided on both sides of the protective steel plate. The fixed pressure strips are arranged at intervals at the upper ends of the side plates. The tops of the side plates are welded to the bottoms of the fixed pressure strips. The fixed pressure strips include three different heights for avoiding steel strands in the small box girder.

[0011] Furthermore, the protective steel plate is connected to the bottom plate of the small box beam by adhesive bonding, and the bottom plate of the small box beam needs to be roughened on the surface before the protective steel plate is bonded.

[0012] Furthermore, the fixed pressure strip is anchored on the web of the small box beam by bolts; a bolt hole is reserved on the top of the fixed pressure strip, and corresponding bolt holes are arranged on the web of the small box beam; the bolt holes on the web of the small steel beam need to avoid the steel strands in the small box beam.

[0013] Furthermore, the protective steel plate and the fixed pressure strip are welded into a whole, and the bolts pass through the reserved holes on the fixed pressure strip and are anchored on the web of the small box beam.

[0014] Furthermore, the surface of the protective steel plate is provided with impact absorbing material, including rubber or elastic plastic, to absorb the impact force on the bridge structure during collision.

[0015] Furthermore, reflective materials or LED lights are provided on the outer sides of the side panels.

[0016] Compared with the prior art, the beneficial effects brought about by the technical solution of the utility model are:

[0017] 1. Protect the bridge structure: The device can effectively protect the bottom structure of the small box girder and prevent vehicles from contacting the bridge, thereby reducing scratches or damage to the bridge structure caused by vehicle scratches and improving the service life and safety of the bridge.

[0018] 2. Prevent traffic accidents: By limiting the vehicle's passing height, the device can avoid traffic accidents caused by inaccurate vehicle height estimation or insufficient height limit measures, and ensure the safety and smoothness of road traffic.

[0019] 3. Flexible height adjustment: Since the fixed pressure strips include three different heights, they are used to avoid the steel strands in the small box girder.

[0020] 4. Equipment reliability: The fixing strips are fixed by bolts to ensure the stability and reliability of the device. At the same time, the protective steel plate and the fixing strips are welded together to form a whole, which reduces the possibility of loosening or falling off of the device and improves the safety of equipment use.

[0021] 5. Convenience of maintenance: The design of the device takes into account the convenience of maintenance, such as reserving bolt holes and avoiding the steel strands in the small box beam, making maintenance and adjustment of the height of the device more convenient and quick, which is conducive to regular inspection and maintenance of the device.

[0022] 6. Adding impact-absorbing material to the surface of the protective steel plate can reduce the impact force on the bridge structure when the vehicle collides with the device, further reducing damage.

[0023] 7. Adding reflective material or LED lights to the outer wall of the protective steel side panels improves the visibility of the device, especially at night or in bad weather conditions, and can better remind drivers of the height limit of the bridge.

[0024] In summary, the protection device scheme for the height-limited bridge can effectively protect the bridge structure, prevent traffic accidents, improve the applicability and reliability of the device, and is easy to maintain and adjust. It has significant safety and economic benefits and can be widely used in the field of protection of existing height-limited bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the protection device provided by the utility model;

[0026] Figure 2 It is a schematic diagram of the cross section of a small box girder with protective devices installed;

[0027] Figure 3 This is a schematic diagram of the protective steel plate structure;

[0028] Figures 4a to 4c It is a schematic diagram of the structure of fixed layering strips of different heights;

[0029] Figure 5 It is a schematic diagram of the bolt structure;

[0030] Figure 6 This is a schematic diagram of the elevation layout of the small box girder protection device provided by the utility model.

[0031] Figure 7 This is a schematic diagram of the plan layout of the small box girder protection device provided by the utility model.

[0032] Figure markings: 1-small box girder, 2-small box girder web, 3-small box girder bottom plate, 4-protective steel plate, 401-side plate, 5-fixed pressure strip, 501-fixed pressure strip A, 502-fixed pressure strip B, 503-fixed pressure strip C, 6-bolts, 7-butt weld, 8-steel strand. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific 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.

[0034] like Figures 1 to 7 As shown, this embodiment provides a protective device for a height-limited bridge, which is used to solve the problem that the bottom of the bridge is scratched or damaged by vehicles that are too high, and ensure the structural safety of the existing bridge; it is installed on a small box beam 1, and the small box beam 1 includes a small box beam bottom plate 3 and a small box beam web 2. The protective device includes a protective steel plate 4 and a fixed pressure strip 5. The protective steel plates 4 are closely arranged at the bottom of the small box beam bottom plate 1, and side plates 401 that fit the web of the small steel beam are arranged on both sides of the protective steel plate 4. Fixed pressure strips 5 are arranged at intervals at the upper ends of the side plates 401. The top of the side plates 401 is welded to the bottom of the fixed pressure strip 5, and the fixed pressure strip 5 includes three different heights; see specifically Figures 4a to 4c , from low to high, they are fixed bead A501, fixed bead B502, and fixed bead C503;

[0035] In this embodiment, adhesive is used to stick the protective steel plate 4 to the small box beam bottom plate 3, and the surface of the small box beam bottom plate needs to be roughened before sticking the protective steel plate.

[0036] The fixed pressure strip 5 is anchored on the web 2 of the small box beam by bolts 6; bolt holes are reserved on the top of the fixed pressure strip 5, and corresponding bolt holes are arranged on the web 2 of the small box beam; the bolt holes on the web of the small steel beam need to avoid the steel strands 8 in the small box beam.

[0037] In this embodiment, the protective steel plate 4 and the fixing strip 5 are welded into a whole, and the bolts 6 pass through the reserved holes on the fixing strip 5 and are anchored on the web 2 of the small box beam.

[0038] In addition, impact-absorbing materials, such as rubber or elastic plastic, are added to the surface of the protective steel plate to reduce the impact force on the bridge structure when the vehicle collides with the device, further reducing damage.

[0039] Adding reflective material or LED lights to the top or sides of the protective device can improve the visibility of the device, especially at night or in bad weather conditions, and can better remind drivers of the height limit of the bridge.

[0040] Preferably, the protective device is made of corrosion-resistant materials, which can be used for a long time in harsh environmental conditions, extend the service life of the device, and reduce maintenance costs and frequency. Considering that the device is exposed to the outdoor environment for a long time, a rain and snow-proof structure can also be designed to avoid the impact of water accumulation or ice on the device, ensuring that the protective device is always in good working condition.

[0041] like Figure 6 to Figure 7 As shown, the elevation and plan layout of the protective device on the existing bridge.

[0042] The above-mentioned construction method of the protective device of the limited height bridge includes the following construction process:

[0043] (1) Roughening treatment is performed on the bottom of the existing small box beam.

[0044] (2) Closely paste protective steel plates,

[0045] (3) Weld the fixed pressure strip on the protective steel plate,

[0046] (4) Drill bolt holes on the existing small box girder.

[0047] (5) Install the bolts.

[0048] Finally, it should be pointed out that the above examples are only used to illustrate the calculation process of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above examples, a person skilled in the art should understand that the calculation process described in the above examples can still be modified, or some parameters can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding calculation method deviate from the spirit and scope of the calculation method of the utility model.

[0049] The present invention is not limited to the implementation methods described above. The above description of the specific implementation methods is intended to describe and illustrate the technical solution of the present invention. The above specific implementation methods are merely illustrative and not restrictive. Without departing from the scope of protection of the present invention and the claims, ordinary technicians in this field can also make many forms of specific changes under the enlightenment of the present invention, which all fall within the protection scope of the present invention.

Claims

1. A protective device for a height-limited bridge, installed on a small box girder, the small box girder comprising a small box girder bottom plate and a small box girder web plate, characterized in that: The protection device includes a protective steel plate and a fixed pressure strip. The protective steel plates are closely arranged at the bottom of the small box beam bottom plate. Side plates that fit the web of the small steel beam are provided on both sides of the protective steel plates. The fixed pressure strips are arranged at intervals at the upper ends of the side plates. The tops of the side plates are welded to the bottoms of the fixed pressure strips. The fixed pressure strips include three different heights for avoiding the steel strands inside the small box beam.

2. A protective device for a height-limited bridge according to claim 1, characterized in that: The protective steel plate is glued and connected to the bottom plate of the small box beam, and the bottom plate of the small box beam needs to be roughened on the surface before gluing the protective steel plate.

3. The protective device for a height-limited bridge according to claim 1, characterized in that: The fixed pressure strip is anchored on the web of the small box beam by bolts; a bolt hole is reserved on the top of the fixed pressure strip, and corresponding bolt holes are arranged on the web of the small box beam; the bolt holes on the web of the small steel beam need to avoid the steel strands in the small box beam.

4. The protective device for a height-limited bridge according to claim 1, characterized in that: The protective steel plate is welded to the fixed pressure strip as a whole and is anchored on the web of the small box beam by bolts passing through reserved holes on the fixed pressure strip.

5. The protective device for a height-limited bridge according to claim 1, characterized in that: The surface of the protective steel plate is provided with impact absorbing material, including rubber or elastic plastic, to absorb the impact force on the bridge structure during collision.

6. The protective device for a height-limited bridge according to claim 1, characterized in that: The outer side of the side plate is provided with reflective material or LED lamp.

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