Self-resetting buttress device of overground pipeline crossing section

Abstract

The invention discloses a self-resetting buttress device for a spanning section of an overground pipeline, and belongs to the field of rock-soil earthquake engineering, the self-resetting buttress device comprises an upper bearing plate, a lower bearing plate and two outer cylinders, the outer cylinders are arranged between the upper bearing plate and the lower bearing plate, springs are arranged between the two outer cylinders and the lower bearing plate, and the springs are arranged between the two outer cylinders and the lower bearing plate. A first circular tooth plate and a second circular tooth plate which are oppositely arranged are arranged in the outer cylinder, a first circular rack and a second circular rack are arranged on the two sides of the first circular tooth plate and the two sides of the second circular tooth plate, and first bolts are arranged at the two ends of the first circular rack and the two ends of the second circular rack. According to the self-resetting buttress device for the overground pipeline crossing section, the problems that the overground pipeline is large in residual displacement, difficult to repair and the like after an earthquake are solved, and under the synergistic effect of the self-resetting mechanism and the energy consumption assembly, the destructive effect of the earthquake on the pipeline is reduced, meanwhile, residual deformation is reduced, and the recovery capacity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical earthquake engineering, and in particular to a self-resetting buttress device for a spanning section of an above-ground pipeline. Background Art

[0002] The application fields of aboveground pipelines are wide and diverse, and they play an especially important role in natural gas transportation projects. With the continuous advancement of technology and the continuous expansion of application fields, the application prospects of aboveground pipelines will be broader, and the requirements for aboveground pipelines will become higher and higher.

[0003] In the above-ground pipeline crossing section, the pipeline is laid directly on the ground piers. The pipeline piers are key components that bear the weight of the pipeline and distribute the load, and play a supporting and balancing role. Traditional piers are generally concrete structures with arc-shaped grooves. The pipeline is placed directly on the structure or simply fixed. It can bear gravity and horizontal forces, but it cannot effectively absorb the vibration force caused by earthquakes. It is easy to produce large displacements under the action of earthquakes; and the piers are in rigid contact with the pipelines, which are easily damaged under the action of earthquake forces. Although there are various types of existing pipeline seismic isolation piers, such as rubber seismic isolation piers, sliding bearings, rolling bearings, swing bearings, limited vibration reduction piers, etc., which can reduce the vibration and displacement of pipelines under earthquakes and improve the stability of the pipeline system, they cannot be restored to their original positions due to the large residual deformation after the earthquake, and the cost of post-earthquake repair is high.

[0004] In order to overcome the problem of large residual deformation of existing piers, the present invention designs a self-resetting pipeline pier by combining friction energy dissipation with a spring self-resetting structure. Summary of the invention

[0005] The purpose of the present invention is to provide a self-resetting buttress device for an above-ground pipeline spanning section, which can reduce the residual deformation of the pipeline structure after an earthquake, reduce the cost of post-earthquake repair, and improve the seismic resistance of the pipeline.

[0006] To achieve the above-mentioned purpose, the present invention provides a self-resetting pier device for an above-ground pipeline crossing section: comprising an upper bearing plate, a lower bearing plate and an outer cylinder, wherein the outer cylinder is arranged between the upper bearing plate and the lower bearing plate, two outer cylinders are provided, springs are arranged between the two outer cylinders and the lower bearing plate, first and second round tooth plates are arranged oppositely inside the outer cylinder, first and second round tooth plates are arranged on both sides of the first and second round tooth plates, and first bolts are arranged at both ends of the first and second round tooth plates.

[0007] Preferably, one end of the first scalloped plate away from the second scalloped plate passes through the upper support plate and is connected by a second bolt, and one end of the second scalloped plate away from the first scalloped plate passes through the lower support plate and is connected by a third bolt.

[0008] Preferably, a first disc spring is provided between the first bolt and the first round rack and the second round rack, a second disc spring is provided between the upper supporting plate and the second bolt, and a third disc spring is provided between the lower supporting plate and the third bolt.

[0009] Preferably, the first and second scalloped plates are provided with scalloped ends facing each other, and meshing with the first and second scalloped racks.

[0010] Preferably, a groove is provided at a position of the lower supporting plate corresponding to the third bolt.

[0011] Preferably, the upper bearing plate and the outer cylinder are connected by welding.

[0012] Therefore, the present invention adopts the above-mentioned self-resetting buttress device for the crossing section of the above-ground pipeline, which has the following beneficial effects:

[0013] (1) During vertical vibration, friction is used to consume energy. Due to the large stiffness of the disc spring, the cushioning and vibration absorption capacity is strong, and it can withstand large loads with small deformation. During horizontal vibration, due to the presence of a spring between the outer cylinder and the lower bearing plate, it can swing and form a self-resetting swing pier.

[0014] (2) Compared with traditional piers, the pier has good seismic resistance. The synergistic effect of the self-reset mechanism and the energy dissipation assembly consisting of the first scalloped plate, the second scalloped plate, the first scalloped rack, the second scalloped rack, the first disc spring and the first bolt significantly improves the seismic resistance of the pier. Moreover, after an earthquake, the pier has little damage and residual displacement, which is convenient for rapid repair and restoration.

[0015] (3) The energy-absorbing components in the design of the self-centering piers, namely the friction damping devices, can be prefabricated and assembled to speed up the construction progress.

[0016] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of an energy-consuming component according to an embodiment of the present invention;

[0019] Reference numerals

[0020] 1. Upper supporting plate; 2. Lower supporting plate; 3. Outer cylinder; 4. Spring; 5. First round tooth plate; 6. Second round tooth plate; 7. First round rack; 8. Second round rack; 9. First bolt; 10. Second bolt; 11. Third bolt; 12. First disc spring; 13. Second disc spring; 14. Third disc spring. DETAILED DESCRIPTION

[0021] Example

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1 The present invention discloses a self-resetting buttress device for a ground pipeline crossing section, comprising an upper bearing plate 1, a lower bearing plate 2 and an outer cylinder 3, wherein the outer cylinder 3 is arranged between the upper bearing plate 1 and the lower bearing plate 2, and the upper bearing plate 1 and the outer cylinder 3 are connected by welding. Two outer cylinders 3 are provided, and springs 4 are provided between the two outer cylinders 3 and the lower bearing plate 2, and first and second round tooth plates 5 and 6 are arranged oppositely inside the outer cylinder 3, and first and second round tooth plates 7 and 8 are arranged on both sides of the first and second round tooth plates 5 and 6, and the first and second round tooth plates 5 and 6 are provided with round teeth at one end opposite to each other, and mesh with the first and second round tooth plates 7 and 8. First bolts 9 are provided at both ends of the first and second round tooth plates 7 and 8.

[0024] The end of the first scalloped plate 5 away from the second scalloped plate 6 passes through the upper bearing plate 1 and is connected by the second bolt 10, and the end of the second scalloped plate 6 away from the first scalloped plate 5 passes through the lower bearing plate 2 and is connected by the third bolt 11. The lower bearing plate 2 is provided with a groove at a position corresponding to the third bolt 11.

[0025] A first disc spring 12 is provided between the first bolt 9 and the first round rack 7 and the second round rack 8, a second disc spring 13 is provided between the upper bearing plate 1 and the second bolt 10, and a third disc spring 14 is provided between the lower bearing plate 2 and the third bolt 11. The disc spring can prevent the bolts from loosening.

[0026] The upper bearing plate 1, the lower bearing plate 2 and the outer tube 3 form a load-bearing assembly, all of which are made of ordinary steel. The upper bearing plate 1 and the outer tube 3 are welded, and a space is reserved on the lower bearing plate 2 to connect the spring 4.

[0027] like Figure 2The energy dissipation assembly composed of the first circular tooth plate 5, the second circular tooth plate 6, the first circular rack 7, the second circular rack 8, the first disc spring 12 and the first bolt 9 is a friction damping device. The first circular tooth plate 5, the second circular tooth plate 6, the first circular rack 7 and the second circular rack 8 are all made of brass.

[0028] The load-bearing component of this embodiment is the outer cylinder 3, which is responsible for transmitting the weight and load of the pipeline and serves as the main bearing part. Since the disc spring can absorb huge energy and is elastic, the supporting structure undergoes slight deformation without damage when vibration occurs, so its ductility performance can be enhanced and rigid damage can be avoided. Its energy-dissipating component uses the friction damping principle, mainly relying on the friction between the round teeth of the brass material to consume the energy of the mechanical system. The self-reset of this embodiment mainly relies on the spring 4. The spring 4 is deformed under the action of the earthquake, and the spring 4 generates elastic potential energy. When the vibration stops, the elastic potential energy is converted into kinetic energy, and the spring 4 can return to its original shape and size. In addition, the pier structure connects the upper and lower parts of the interface into a whole through the spring 4 and the energy-dissipating component. When an earthquake occurs, a swinging interface will be generated at the spring 4, which is equivalent to a "hinge" that can be rotated to a limited extent. The reciprocating rotation of the "hinge" realizes the seismic isolation effect, thereby avoiding damage to the pipeline structure. The upper and lower support plates 2 of the pier structure are connected by bolts, and a disc spring is placed between the nut and the support platform to avoid rigid damage at the connection part.

[0029] Therefore, the present invention adopts the above-mentioned self-resetting pier device for the crossing section of the above-ground pipeline to solve the problems of large residual displacement and difficulty in repair of the above-ground pipeline after an earthquake. Under the synergistic effect of the self-resetting mechanism and the energy-consuming components, while reducing the destructive effect of the earthquake on the pipeline, the residual deformation is reduced and the recovery capacity is improved.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A self-resetting buttress device for a ground pipeline spanning section, characterized in that: It includes an upper supporting plate, a lower supporting plate and an outer cylinder, wherein the outer cylinder is arranged between the upper supporting plate and the lower supporting plate, two outer cylinders are provided, springs are provided between the two outer cylinders and the lower supporting plate, first and second round tooth plates are provided oppositely inside the outer cylinder, first and second round tooth plates are provided on both sides of the first and second round tooth plates, and first bolts are provided at both ends of the first and second round tooth plates.

2. The self-resetting buttress device for a ground pipeline spanning section according to claim 1 is characterized in that: One end of the first scalloped plate away from the second scalloped plate passes through the upper bearing plate and is connected by a second bolt, and one end of the second scalloped plate away from the first scalloped plate passes through the lower bearing plate and is connected by a third bolt.

3. The self-resetting buttress device for a ground pipeline spanning section according to claim 2 is characterized in that: A first disc spring is arranged between the first bolt and the first round rack and the second round rack, a second disc spring is arranged between the upper supporting plate and the second bolt, and a third disc spring is arranged between the lower supporting plate and the third bolt.

4. The self-resetting buttress device for a ground pipeline spanning section according to claim 3 is characterized in that: The first scalloped plate and the second scalloped plate are provided with ends of scalloped teeth facing each other and meshing with the first scalloped gear bar and the second scalloped gear bar.

5. The self-resetting buttress device for a ground pipeline spanning section according to claim 4, characterized in that: A groove is provided at a position of the lower bearing plate corresponding to the third bolt.

6. A self-resetting buttress device for a ground pipeline spanning section according to claim 5, characterized in that: The upper bearing plate is connected to the outer cylinder by welding.

Images