Bridge pipe support

Abstract

The application discloses a kind of overbridge pipe support pier support, including by upper to lower series connection setting movable support device and fixed support device, movable support device includes upper roof, lateral plate and guide plate, fixed support device includes lower bottom plate, lateral limiting plate, connecting column, pressure plate, connecting column upper end passes through guide plate and extends into movable support device inside, pressure plate is fixedly connected with connecting column upper end, and pressure plate is located movable support device inside;Between upper roof and pressure plate in movable support device, disc spring is arranged, around connecting column, spiral spring is arranged between lower bottom plate and guide plate in fixed support device, and spiral spring is connected in series by pressure plate and disc spring up and down.The application mechanism connection is reliable, structure stress is clear, and shock absorption and shock insulation performance is good, can effectively absorb and dissipate pipeline water hammer and seismic impact energy, ensure that pipeline structure is stable and reliable.

Description

Technical Field

[0001] This invention belongs to the field of bridge engineering technology, and specifically relates to a support for a pipeline pier for crossing a bridge. Background Technology

[0002] When large-diameter water pipelines cross bridges, they are typically supported on the bridge deck by piers and abutments. When an open valve suddenly closes or a closed valve suddenly opens, positive and negative water hammer effects occur within the pipeline. Under the impact of water hammer, the structure in a localized area of ​​the large-diameter water pipeline will experience a certain degree of dynamic response. Furthermore, under seismic loads, the bridge and the water pipeline exhibit mutual dynamic responses. Under various dynamic loads, reliable support connections between the large-diameter water pipeline and the bridge deck have become crucial for ensuring the safe operation of pipeline structures crossing bridges. Summary of the Invention

[0003] The purpose of this invention is to provide a support for a bridge-crossing pipeline pier, which solves the problem of effective support for large-diameter water conveyance bridge-crossing pipelines under various dynamic loads.

[0004] To achieve the above objectives, the present invention provides a bridge pipeline support pier, comprising a movable support device and a fixed support device arranged in series from top to bottom. A disc spring is installed within the movable support device, and a helical spring is installed within the fixed support device. The fixed support device is mounted on the pier embedded part, and the movable support device is located on the bottom surface of the steel rib plate supporting the pipeline. Both the fixed and movable support devices are cylindrical in shape. The movable support device includes an upper top plate, a side plate, and a guide plate. The fixed support device includes a lower bottom plate, a side limiting plate, a connecting column, and a pressure plate. The connecting column and the pressure plate are embedded within the movable support device. A disc spring is installed between the upper top plate and the pressure plate within the movable support device. A helical spring is arranged around the connecting column between the lower bottom plate and the guide plate within the fixed support device. The upper and lower ends of the helical spring are fixedly connected to the guide plate and the lower bottom plate, respectively. The helical spring and the disc spring are in series in space. When the pipeline is impacted by water hammer or seismic loads, the movable support device moves vertically up and down along the connecting column, and the helical spring and the disc spring are simultaneously subjected to load linkage.

[0005] Preferably, the movable support device formed by the top plate, side plate and guide plate is in the shape of an open cylindrical tube. The guide plate has several circular holes with a diameter larger than that of the connecting column. The side plate is provided with a limiting ring, which is parallel to the guide plate and the pressure plate in space, and is separate from the connecting column and does not contact it.

[0006] Preferably, the fixed support device formed by the lower base plate, the lateral limiting plate, the connecting column, and the pressure plate is in the shape of a non-sealed cylinder. The inner diameter of the lateral limiting plate of the fixed support device is larger than the outer diameter of the lateral plate, the diameter of the pressure plate is smaller than the inner diameter of the lateral plate, and the diameter of the connecting column is smaller than the diameter of the circular hole opened on the guide plate.

[0007] Preferably, the perforated cylindrical movable support device and the non-sealed cylindrical fixed support device are nested and connected to each other.

[0008] Preferably, the inner diameter of the helical spring is larger than the radius of the connecting column, the lower end of the helical spring is fixedly connected to the lower base plate, and the upper end of the helical spring is fixed to the guide plate.

[0009] Preferably, the outer diameter of the disc spring is smaller than the inner diameter of the side plate, and the combination is a hybrid type. The disc spring is located in the variable cylindrical sealed space formed by the top plate, the side plate, and the pressure plate.

[0010] The invention features reliable connections, clear structural stress, and excellent shock absorption and vibration isolation performance. It is simple, quick, and economical to install, effectively absorbing and dissipating water hammer and seismic impact energy in pipelines, preventing and mitigating safety risks to pipeline structures crossing bridges, and ensuring the stability and reliability of pipeline structures. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the pipeline crossing the bridge.

[0012] Figure 2 This is an elevation view of the support pier for the pipeline crossing the bridge.

[0013] Figure 3 Plan view of the fixed support device for the pipeline support pier across the bridge.

[0014] Figure 4 This is a planar structural diagram of the guide plate.

[0015] Figure 5 This is a planar construction diagram of the limiting ring.

[0016] Figure 6 This is a plan view of the disc spring structure of the movable support device.

[0017] Figure 7 This is a structural diagram of the disc spring's elevation.

[0018] Figure 8 This is a planar structural diagram of a disc spring. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, a bridge-crossing pipeline support provided by the present invention will be described in detail below with reference to embodiments and illustrations. The following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0020] See Figures 1-2 The pier embedded part 19 is pre-embedded and installed on the bridge deck. A leveling layer 3 is set on the pier embedded part 19. The bottom plate 4 of the support is positioned and installed by the lower anchor bolt 5. The steel rib plate 18 is sleeved on the outside of the pipe 16 to form a pier. The top plate 1 of the support is connected to the pier by the upper anchor bolt 2. The pipe 16 and the pier are supported on the pier embedded part 19 by the symmetrically installed pier support 17.

[0021] See Figures 2-5 The pier support 17 includes a movable support device and a fixed support device arranged in series from top to bottom. The movable support device includes an upper top plate 1, a side plate 7, and a guide plate 8. A limiting ring 9 is provided on the side plate 7 of the movable support device. The movable support device formed by the upper top plate 1, the side plate 7, and the guide plate 8 is an overall perforated cylindrical shape. The upper top plate 1, the limiting ring 9, and the guide plate 8 are all horizontally arranged. Several circular holes 15 are provided on the guide plate 8. The number of circular holes 15 is equal to the number of connecting columns 12. The diameter of the circular holes 15 is larger than the diameter of the connecting columns 12. Several ventilation holes 14 are provided on the guide plate 8. The fixed support device includes a lower base plate. 4. The fixed support device formed by the lateral limiting plate 6, connecting column 12, and bearing plate 10, and the lower base plate 4, is an overall non-sealed cylindrical shape. The connecting column 12 is connected to the lower base plate 4 and bearing plate 10 as a whole. The lower base plate 4, guide plate 8, and bearing plate 10 are all horizontal. Ventilation holes 14 are opened on the bearing plate 10 and the lateral limiting plate 6. The inner diameter of the lateral limiting plate 6 is larger than the outer diameter of the lateral plate 7, the diameter of the bearing plate 10 is smaller than the inner diameter of the lateral plate 7, and the diameter of the connecting column 12 is smaller than the diameter of the circular hole 15 opened on the guide plate 8. The connecting column 12 is separate from the limiting ring 9 and does not contact it. The connecting column 12 and bearing plate 10 of the fixed support device are embedded in the movable support device. The lateral plate 7 and guide plate 8 of the movable support device are inserted into the fixed support device. The perforated cylindrical movable support device and the non-sealed cylindrical fixed support device are nested and connected to each other.

[0022] See Figures 2-8A helical spring 11 is installed around the connecting column 12 within the fixed support device. The helical spring 11 is made of 60Si2MnA spring steel. The inner diameter, outer diameter, and stiffness coefficient of the helical spring 11 should meet the design requirements. The upper and lower ends of the helical spring 11 are fixedly connected to the guide plate 8 and the lower base plate 4, respectively. The inner diameter of the helical spring 11 is larger than the radius of the connecting column 12. A disc spring 13 is installed between the top plate 1 and the pressure plate 10 on the movable support device. The disc spring 13 is located in the variable cylindrical sealed space formed by the top plate 1, the side plate 7, and the pressure plate 10. The disc spring 13 is a special spring that is axially conical and bears the load. The disc spring 13 is made of 60Si2MnA spring steel. The outer diameter of the disc spring 13 is smaller than the inner diameter of the side plate 7. The load-bearing capacity and deformation of the disc spring 13 should meet the design requirements. The combination method of the disc spring 13 is a hybrid type, that is, it combines overlapping and mating. The disc spring 13 and the helical spring 11 are connected in series in space through the pressure plate 10 and the guide plate 8.

[0023] When water hammer and seismic load impact the pipeline 16, the pipeline 16 vibrates and displaces vertically. The movable support device moves vertically up and down within the fixed support device along the connecting column 12 in a piston-like manner. The cylindrical sealed space formed by the top plate 1, the side plate 7, and the pressure plate 10 is compressed repeatedly. The helical spring 11 and the disc spring 13 are simultaneously linked by the load. The helical spring 11 and the disc spring 13 absorb vibration and dissipate the water hammer and seismic impact energy through extension, compression and deformation, respectively.

[0024] When water hammer and seismic load impact the pipeline 16, the pipeline 16 vibrates and displaces laterally to the left and right. The movable support device as a whole displaces between the connecting column 12 and the lateral limiting plate 6. The upper end of the helical spring 11 and the guide plate 8 displace laterally at the same time. Meanwhile, the connecting column 12 and the lateral limiting plate 6 restrict the lateral displacement of the movable support device, and the helical spring 11 constrains the lateral displacement of the guide plate 8. Through the interaction between the helical spring 11 and the guide plate 8, the connecting column 12 and the guide plate 8, and the lateral plate 7 and the lateral limiting plate 6, the water hammer and seismic impact energy is dissipated.

[0025] The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Various changes that can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A bridge-crossing pipeline support, characterized in that, The system includes a movable support device and a fixed support device arranged in series from top to bottom. A disc spring is installed within the movable support device, and a helical spring is installed within the fixed support device. The fixed support device is mounted on an embedded support, and the movable support device is located on the bottom surface of the steel rib plate supporting the pipeline. Both the fixed and movable support devices are cylindrical in shape. The movable support device includes an upper top plate, side plates, and a guide plate. The fixed support device includes a lower bottom plate, a lateral limiting plate, a connecting column, and a pressure plate. The pressure plate is embedded within the movable support device. A disc spring is installed between the upper top plate and the pressure plate within the movable support device. A helical spring is arranged around the connecting column between the lower bottom plate and the guide plate within the fixed support device. The upper and lower ends of the helical spring are fixedly connected to the guide plate and the lower bottom plate, respectively. The helical spring and the disc spring are in series in space. When the pipeline is impacted by water hammer or seismic loads, the movable support device moves vertically up and down along the connecting column, and the helical spring and the disc spring are simultaneously subjected to load linkage. The connecting column, the lower bottom plate, and the pressure plate are connected as a whole. The movable support device formed by the top plate, side plate and guide plate is in the shape of an open cylinder. The guide plate has several circular holes with a diameter larger than that of the connecting column. The side plate is provided with a limit ring, which is parallel to the guide plate and the pressure plate in space, and is separate from the connecting column and does not contact it. The fixed support device formed by the bottom plate, the side limiting plate, the connecting column, and the bearing plate is in the shape of a non-closed cylinder. The inner diameter of the side limiting plate of the fixed support device is larger than the outer diameter of the side plate, and the diameter of the bearing plate is smaller than the inner diameter of the side plate. The perforated cylindrical movable support device and the non-sealed cylindrical fixed support device are nested and connected to each other.

2. The bridge-crossing pipeline support according to claim 1, characterized in that, The inner diameter of the helical spring is larger than the radius of the connecting column.

3. The bridge-crossing pipeline support according to claim 1, characterized in that, The outer diameter of the disc spring is smaller than the inner diameter of the side plate, and the combination method is a hybrid type. The disc spring is located in the variable cylindrical sealed space formed by the top plate, the side plate, and the pressure plate.

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