Edge protection device for bridge support replacement and support padstone construction

Abstract

The invention relates to a temporary protection device for bridge support replacement and support padstone construction, which comprises a steel pipe bracket, a bolt and a steel wire mesh, the steel pipe bracket is formed by vertically and horizontally arranging a plurality of angle steels at intervals to form a bearing rod and a supporting rod, and the bearing rod and the supporting rod can be freely disassembled and combined; the top of the steel pipe bracket is connected with the plate girder through bolts. The steel pipe bracket can be freely combined according to the requirements of a construction site, is suitable for repairing and constructing bridge supports and support padstones in renewal of various bridges and reconstruction of old bridges, and is convenient to operate and high in construction efficiency.

Description

Technical Field

[0001] The invention relates to a bridge support and a support cushion stone construction device in bridge renewal and old bridge reconstruction, and in particular to an edge protection device used for bridge support cushion stone construction. Background Art

[0002] The construction of bearings and bearing pads is generally carried out after the cap beam construction process. The cast-in-place cap beam can use its construction operation platform as edge protection, while the prefabricated cap beam can be used as a high-altitude lifeline protection through measures such as lifting rings and temporary anchors.

[0003] However, with the continuous development of social needs, the previous urban spatial layout and functional configuration have gradually been unable to meet the current needs. Existing road traffic facilities are usually designed based on residential areas and commercial areas in built-up areas for traffic load matching. Due to factors such as the high cost of protecting historical blocks and demolition, the continuous growth of motor vehicle ownership and renewal projects have induced new traffic travel needs that are not matched with the carrying capacity of the existing road network. The traffic capacity of the road network is difficult to improve through the construction and reconstruction of roads. Therefore, new construction projects in the road network traffic system have gradually decreased, and the focus of urban renewal has gradually shifted towards traffic optimization.

[0004] For such urban bridge renewal projects, existing bridges may only require replacement or repair of parts that are severely damaged or require functional adjustments, and do not involve the overall demolition and reconstruction of the bridges. At the same time, in order to meet the surrounding traffic needs, such projects often also face the problem of tight construction schedules.

[0005] The renovation and repair of bridge bearings and bearing pads may not involve the replacement of the lower structure. During the construction process, the removal of the in-service slab beams and the installation of new beams are close in time. This further reduces the already narrow operating space on the top of the cap beam, and the ground traffic below also puts higher requirements on the risk prevention of falling objects. Building a construction platform on site is not only not conducive to the construction period, but also has a certain risk of falling parts and components. Summary of the invention

[0006] The present invention aims to solve the problem of edge protection of bearings and bearing pad stones in urban renewal bridge projects without replacing the lower structure, and proposes a temporary protection device for bridge bearing replacement and bearing pad stone construction.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is: a temporary protective device for replacing bridge bearings and constructing bearing pad stones, including a steel pipe bracket, bolts and wire mesh. The steel pipe bracket is composed of a number of angle steels arranged vertically and horizontally at intervals to form supporting rods and support rods, which can be freely disassembled and assembled; the top of the steel pipe bracket is connected to the plate beam by bolts.

[0008] Furthermore, the supporting rods are horizontal, including longitudinal bridge-shaped horizontal supporting rods extending in the width direction of the cap beam and transverse bridge-shaped horizontal supporting rods extending in the length direction of the cap beam. The longitudinal bridge-shaped horizontal supporting rods extending in the width direction of the cap beam, i.e., the top longitudinal bridge-shaped horizontal supporting rods extend to the top surface of the slab beam, the middle longitudinal bridge-shaped horizontal supporting rods extend to the side surface of the cap beam spine or the cross-section of the slab beam, the bottom longitudinal bridge-shaped horizontal supporting rods are against the upper edge in the length direction of the cap beam, and the longitudinal bridge-shaped horizontal supporting rods are arranged at intervals along the length direction of the cap beam.

[0009] Furthermore, the bottom-level longitudinal bridge horizontal supporting rod in contact with the cap beam forms a hinged fulcrum, and the top-level longitudinal bridge horizontal supporting rod resting on the top surface of the slab beam is consolidated with the slab beam at the cantilever end, so that the entire steel pipe bracket can be fixed to the side of the dismantled slab beam, avoiding displacement of the temporary protective device, and playing a role in limiting and fixing the overall structure.

[0010] Furthermore, the support rods include vertical support rods and diagonal support rods. The vertical support rods are connected to the horizontal supporting rods and are arranged at intervals along the length direction of the cap beam to form a frame structure. The diagonal support rods are supported at the angle between the vertical support rods and the horizontal supporting rods to provide effective support and enhance structural stability.

[0011] Furthermore, the horizontal supporting rod and the longitudinal supporting rod are fixedly connected by welding.

[0012] Furthermore, the wire mesh is fixedly connected to the steel pipe bracket by welding and attached to the gap between the vertical support rod and the horizontal support rod, which is safer. After being erected on site, a temporary closed structure is formed on the top of the cap beam, providing a safe and stable temporary protection device for construction workers.

[0013] The beneficial results of the present invention are:

[0014] By adopting the above technical scheme, the present invention can fix all components of the temporary protective device itself by welding on site, without the need for on-site welding and assembly. After the temporary protective device is transported to the site, it is installed by a crane, and is connected to the top of the plate beam by bolts through the reserved holes of the horizontal support rod. According to the size of the on-site cap beam, multiple temporary protective devices are combined, and after completion, the support shim and support construction operations can be carried out, which not only ensures the safety of on-site operations, but also reduces the on-site operation steps and improves construction efficiency.

[0015] The present invention uses common tools and materials such as angle steel and bolts to form a temporary protective device. The enclosure measures only need to be simply spliced ​​on site to achieve temporary enclosure. The structural connection is stable and the on-site operation steps are relatively few. It can effectively shorten the construction period while meeting the safety and quality requirements. It is suitable for construction environments with narrow construction sites, tight construction periods, and high safety requirements. The device is easy to operate and control. It is suitable for the replacement of bridge bearings and bearing pad stones during the replacement of various bridge superstructures. It has certain popularity and versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a elevation view of the temporary protection device of the present invention;

[0017] Figure 2 is a top view of the temporary protection device of the present invention;

[0018] Figure 3 is a side view of the temporary protection device of the present invention;

[0019] Explanation of the reference numerals in the accompanying drawings: 2. Expansion bolt; 3. Support pad stone; 4. Cap beam; 5. Plate beam; 6. Wire mesh; 7. Support; 11. Vertical support rod; 12. Horizontal support rod in the longitudinal direction of the bridge; 13. Oblique support rod; 14. Horizontal support rod in the transverse direction of the bridge. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are further described below in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

[0021] like Figures 1 to 3 As shown, the temporary protection device for the construction of bridge bearings and bearing pads proposed by the present invention includes angle steel, bolts and wire mesh. The angle steel forms a steel pipe bracket, the top of the bracket is connected to the plate beam by bolts, and the steel pipe bracket is composed of a plurality of angle steels arranged vertically and horizontally to form a horizontal support rod and a support rod, which can be freely disassembled and assembled.

[0022] The horizontal supporting rods include longitudinal bridge-direction horizontal supporting rods 12 extending in the width direction of the cap beam 4 and transverse bridge-direction horizontal supporting rods 14 extending in the length direction of the cap beam 4. The longitudinal bridge-direction horizontal supporting rods 12 extending in the width direction of the cap beam 4, that is, the top longitudinal bridge-direction horizontal supporting rods 12 extend to the top surface of the plate beam 5, the middle longitudinal bridge-direction horizontal supporting rods 12 extend to the side of the spine of the cap beam 4 or the cross section of the plate beam 5, the bottom longitudinal bridge-direction horizontal supporting rods 12 abut against the upper edge in the length direction of the cap beam 4, and the longitudinal bridge-direction horizontal supporting rods 12 are arranged at intervals along the length direction of the cap beam 4. The bottom longitudinal bridge-direction horizontal supporting rods 12 in contact with the cap beam 4 form a hinged fulcrum, and the cantilever end of the top longitudinal bridge-direction horizontal supporting rods 12 resting on the top surface of the plate beam is consolidated with the plate beam 5. This allows the entire steel pipe bracket to be fixed to the side of the removed plate beam 5 to avoid displacement of the temporary protective device, and to play a role in limiting and fixing the overall structure.

[0023] The support rods include vertical support rods 11 and oblique support rods 13. The vertical support rods 11 are connected to the horizontal support rods and are arranged at intervals along the length direction of the cap beam 4 to form a frame structure. The oblique support rods 13 are supported at the angle between the vertical support rods 11 and the horizontal support rods to provide effective support and enhance structural stability.

[0024] The horizontal supporting rod and the longitudinal supporting rod are fixedly connected by means of welding and the like, and are easy to process, have high rigidity, good overall performance, and can withstand high loads.

[0025] The wire mesh 6 is fixedly connected to the steel pipe bracket by means such as welding, and is attached to the gap between the vertical support rod and the horizontal support rod, which is safer. After being erected on site, a temporary closed structure is formed on the top of the cap beam, providing a safe and stable temporary protection device for construction workers.

[0026] In summary, in the specific implementation of the present invention, the horizontal support rod, the longitudinal support rod and the wire mesh are fixedly connected by welding to form a steel pipe bracket, and the horizontal support rod is connected to the plate beam and the cap beam by bolts. The steel pipe brackets are freely combined on site to form a semi-enclosed working space on the top surface of the cap beam, which serves as a temporary protective device for the construction of bridge bearings and bearing pads. The preliminary work can be carried out in other places, which improves the construction efficiency, ensures the safety of on-site operations, and provides a stable and reliable life safety line for high-altitude operations.

Claims

1. A temporary protective device for bridge bearing replacement and bearing pad stone construction, characterized by: It includes a steel pipe bracket, bolts and a wire mesh. The steel pipe bracket is composed of a number of angle steels arranged at vertical and horizontal intervals to form a supporting rod and a support rod, which can be freely disassembled and assembled; the top of the steel pipe bracket is connected to the plate beam by bolts.

2. The temporary protection device for bridge bearing replacement and bearing pad stone construction according to claim 1 is characterized by: The supporting rods are horizontal, including longitudinal bridge-direction horizontal supporting rods extending in the width direction of the cap beam and transverse bridge-direction horizontal supporting rods extending in the length direction of the cap beam. The longitudinal bridge-direction horizontal supporting rods extending in the width direction of the cap beam, i.e., the top longitudinal bridge-direction horizontal supporting rods extend to the top surface of the slab beam, the middle longitudinal bridge-direction horizontal supporting rods extend to the side surface of the cap beam spine or the slab beam cross-section, the bottom longitudinal bridge-direction horizontal supporting rods rest against the upper edge in the length direction of the cap beam, and the longitudinal bridge-direction horizontal supporting rods are arranged at intervals along the length direction of the cap beam.

3. The temporary protection device for bridge bearing replacement and bearing pad stone construction according to claim 2 is characterized in that: The bottom-level longitudinal bridge horizontal supporting rod in contact with the cap beam forms a hinged fulcrum, and the top-level longitudinal bridge horizontal supporting rod resting on the top surface of the slab beam is consolidated with the slab beam at the cantilever end, so that the entire steel pipe bracket can be fixed to the side of the dismantled slab beam to avoid displacement of the temporary protective device, thus playing a role in limiting and fixing the overall structure.

4. The temporary protection device for bridge bearing replacement and bearing pad stone construction according to claim 1 is characterized by: The support rods include vertical support rods and diagonal support rods. The vertical support rods are connected to the horizontal supporting rods and are arranged at intervals along the length of the cap beam to form a frame structure. The diagonal support rods are supported at the angle between the vertical support rods and the horizontal supporting rods to provide effective support and enhance structural stability.

5. The temporary protection device for bridge bearing replacement and bearing pad stone construction according to claim 4 is characterized in that: The horizontal supporting rod and the longitudinal supporting rod are fixedly connected by welding.

6. The temporary protection device for bridge bearing replacement and bearing pad stone construction according to claim 1 is characterized by: The wire mesh is fixedly connected to the steel pipe bracket by welding and attached to the gap between the vertical support rod and the horizontal support rod, which provides higher safety. After being erected on site, a temporary closed structure is formed on the top of the cap beam, providing a safe and stable temporary protection device for construction workers.

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