Rate-bearing type multi-stage energy dissipation damper

Abstract

The utility model provides a rate-bearing type multi-stage energy dissipation damper, and relates to the technical field of damping structures. Comprising an upper connecting plate, a lower connecting plate and a viscous damper arranged between the upper connecting plate and the lower connecting plate. A plurality of triangular energy consumption plates are oppositely arranged on the left side and the right side of the viscous damper, the bottom ends of the triangular energy consumption plates are perpendicularly connected with the lower connecting plate, and the upper ends of the triangular energy consumption plates and the upper connecting plate are arranged at intervals. The bottom face of the upper connecting plate is connected with a plurality of top plate blocks symmetrically distributed on the two sides of the triangular energy consumption plate, and the top plate blocks are suitable for making contact with the triangular energy consumption plate when the viscous damper is not enough to output enough damping force so that the triangular energy consumption plate can be bent under stress. By means of the scheme, multi-stage energy consumption of the damper can be achieved, and applicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbing structures, in particular to a rate-bearing type multi-stage energy dissipation damper. Background Art

[0002] The seismic design method of traditional buildings mainly relies on the stiffness, strength and ductility of the load-bearing structure itself to resist earthquakes in order to meet the three-level performance goals of "no damage in small earthquakes, repairable in medium earthquakes, and no collapse in large earthquakes". Although the seismic design method of traditional buildings can ensure that the buildings do not collapse, the damage caused by earthquakes is difficult to repair and will still cause serious damage to human property. Different from the seismic design method of traditional buildings, the energy dissipation and shock reduction technology mainly installs dampers in weak parts of the main structure that are prone to damage. Under the action of an earthquake, the damper produces plastic deformation before the main structure to dissipate energy in order to reduce the seismic response and achieve the seismic design goal. According to the different energy dissipation mechanisms, dampers can be divided into friction dampers, viscous dampers, metal dampers, etc.

[0003] The viscous damper is composed of a piston, a cylinder, a damping hole, a piston rod, a viscous fluid damping material and other parts. There are several damping holes on the piston to allow the viscous fluid material to pass through. Under the action of an earthquake, the piston will reciprocate in the cylinder, and the viscous fluid damping material will reach the low-pressure area from the high-pressure area through the damping hole, and the energy input from the outside can be dissipated through friction and collision. Compared with other dampers, the viscous damper will not affect the stiffness of the building while providing shock absorption and energy consumption for the building, avoiding the negative impact of additional stiffness on the shock absorption and energy consumption of the building. The shock absorption and energy consumption effect of the viscous damper is also affected by speed. Most projects use nonlinear viscous dampers, which have the advantage of being able to output sufficient damping force at a relatively low speed, which can ensure the shock absorption effect; however, the existing viscous dampers may not be sufficient to provide sufficient building safety reserves at high speeds due to the small increase in damping force.

[0004] The energy dissipation principle of metal dampers is based on the plastic deformation of metal materials to dissipate seismic energy and improve the seismic performance of buildings. Metal dampers have the advantages of stable energy dissipation, simple energy dissipation mechanism, and low cost, but the traditional metal dampers have a single energy dissipation level and cannot take into account the requirements of low-intensity earthquakes and strong earthquakes. For metal dampers with large yield displacement, under the action of low-intensity earthquakes, due to their large yield displacement, they can only maintain an elastic state and cannot play the function of energy dissipation. In this case, the energy dissipation of the damper is very limited, and it cannot fully absorb and disperse seismic energy, thus failing to meet the design requirements. On the contrary, for metal dampers with small yield displacement, under the action of strong earthquakes, the load and plastic deformation they bear will increase, which may cause excessive accumulation of plastic damage to the damper, or even damage. This will lead to a decrease in the energy dissipation capacity of the damper, and it will not be able to meet the requirements of long-term reliable operation. That is, the existing dampers cannot be used in multiple scenarios and have insufficient adaptability. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a rate-load-bearing multi-stage energy-absorbing damper to solve the problem that the existing damper cannot be used in multiple scenarios and has insufficient adaptability.

[0006] The utility model adopts the following scheme: the application provides a rate-bearing multi-stage energy-absorbing damper, comprising: an upper connecting plate, a lower connecting plate, and a viscous damper arranged between the upper connecting plate and the lower connecting plate; a plurality of triangular energy-absorbing plates are arranged relatively on the left and right sides of the viscous damper, the bottom end of the triangular energy-absorbing plate is vertically connected to the lower connecting plate, and the upper end thereof is spaced apart from the upper connecting plate; the bottom surface of the upper connecting plate is connected to a plurality of top plates symmetrically distributed on both sides of the triangular energy-absorbing plate, and the top plates are suitable for contacting the triangular energy-absorbing plate when the viscous damper is insufficient to output sufficient damping force, so that the triangular energy-absorbing plate is bent under force.

[0007] Furthermore, the viscous damper includes a connecting pin seat, a pin head, a pin shaft, a piston rod, a piston, a cylinder body, and a damping material, wherein two connecting pin seats are provided and are respectively fixed on an upper connecting plate and a lower connecting plate, one end of the cylinder body is hinged on the connecting pin seat of the upper connecting plate, the piston rod is inserted into the cylinder body and connected to the piston, and its outer end is hinged to the connecting pin seat of the lower connecting plate through a pin head, the cylinder body is filled with damping material, and the piston is provided with a plurality of damping holes suitable for the passage of the damping material.

[0008] Furthermore, a regulating valve and a regulating oil cylinder are provided at one end of the cylinder body away from the piston rod for adjusting the pressure change in the cylinder body.

[0009] Furthermore, the triangular energy dissipation plate includes a triangular main body and a square block formed on the top of the triangular main body, the square block is located between two adjacent top panels, and a gap is formed between the top end of the square block and the upper connecting plate.

[0010] Furthermore, the triangular energy dissipation plate is made of Q235B steel.

[0011] Furthermore, the upper connecting plate, the lower connecting plate and the top plate are made of Q355B steel.

[0012] Beneficial effects:

[0013] The utility model combines a viscous damper with a metal damper. In the case of a small earthquake, the structural rigidity will not be increased. At the same time, the viscous damper can output sufficient damping force at a relatively low speed to dissipate the seismic energy. In the case of a medium or large earthquake, the triangular energy dissipation plate also participates in the action, which can improve the overall energy dissipation capacity of the damper and ensure the safety of the building. In addition, the utility model also improves the single-rod viscous damper, and is provided with a regulating valve and a regulating oil cylinder to adjust the pressure change in the cylinder body to avoid vacuum inside the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the installation structure of a rate-load-bearing multi-stage energy dissipation damper according to an embodiment of the utility model;

[0015] Figure 2 It is a front view structural schematic diagram of a rate-bearing type multi-stage energy dissipation damper according to an embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of the decomposed structure of a rate-load-bearing multi-stage energy dissipation damper according to an embodiment of the utility model;

[0017] Figure 4 It is a structural schematic diagram of a viscous damper of a rate-load-bearing multi-stage energy dissipation damper according to an embodiment of the utility model;

[0018] Icons: frame 1, rate-bearing multi-stage energy-absorbing damper 2, upper connecting plate 21, lower connecting plate 22, viscous damper 23, connecting pin seat 231, pin head 232, pin shaft 233, piston rod 234, piston 235, cylinder body 236, damping material 237, regulating valve 238, regulating cylinder 239, triangular energy-absorbing plate 24, top plate 25. DETAILED DESCRIPTION

[0019] Combination Figures 1 to 4As shown, this embodiment provides a rate-bearing multi-stage energy dissipation damper, including: an upper connecting plate 21, a lower connecting plate 22, and a viscous damper 23 arranged between the upper connecting plate 21 and the lower connecting plate 22; a plurality of triangular energy dissipation plates 24 are arranged on the left and right sides of the viscous damper 23, the bottom end of the triangular energy dissipation plate 24 is vertically connected to the lower connecting plate 22, and the upper end thereof is spaced apart from the upper connecting plate 21; the bottom surface of the upper connecting plate 21 is connected to a plurality of top plates 25 symmetrically distributed on both sides of the triangular energy dissipation plate 24, and the top plates 25 are suitable for contacting the triangular energy dissipation plate 24 when the viscous damper 23 is insufficient to output sufficient damping force, so that the triangular energy dissipation plate 24 is bent under force.

[0020] Combination Figures 2 to 4 As shown, in this embodiment, the top plate 25, the upper connecting plate 21 and the lower connecting plate 22 can be made of Q355B steel, which can be connected to the reinforced concrete mounting frame 1, and each mounting frame 1 can be provided with a plurality of the anti-buckling multi-stage energy-absorbing metal dampers, and the plurality of multi-stage dampers can be arranged in the same straight line. The upper connecting plate 22 can be fixedly connected by welding or by connecting with a locking piece. A plurality of top plates 25 suitable for matching with the triangular energy-absorbing plate 24 are provided on the bottom surface of the upper connecting plate 21. The upper end of the top plate 25 is welded to the upper connecting plate 21, and the lower end does not contact the lower connecting plate 22, and is symmetrically arranged on both sides of the triangular energy-absorbing plate 24.

[0021] Combination Figure 3 to Figure 4As shown, the viscous damper 23 includes a connecting pin seat 231, a pin head 232, a pin shaft 233, a piston rod 234, a piston 235, a cylinder body 236, and a damping material 237, wherein two connecting pin seats 231 are provided and are respectively fixed on the upper connecting plate 21 and the lower connecting plate 22, one end of the cylinder body 236 is hinged on the connecting pin seat 231 of the upper connecting plate 21, the piston rod 234 is inserted into the cylinder body 236 and connected to the piston 235, and its outer end is hinged to the connecting pin seat 231 of the lower connecting plate 22 through the pin head 232, the cylinder body 236 is filled with damping material 237, and the piston 235 is provided with a plurality of damping holes suitable for the damping material 237 to pass through. Here, the connecting pin seat 231 can be fixed on the upper connecting plate 21 and the lower connecting plate 22 by welding, the pin head 232 is hinged to the connecting pin seat 231 through the pin shaft 233, one end of the piston rod 234 is connected to the connecting pin seat 231 of the lower connecting plate 22 through the pin head 232, and the other end of the piston rod 234 is connected to the piston 235 inside the cylinder body 236. During an earthquake, the upper connecting plate 21 and the lower connecting plate 22 are subjected to force, and at this time, the piston rod 234 moves toward the bottom of the cylinder body 236, and the damping material 237 flows in the opposite direction from the damping hole of the piston 235 when squeezed. Since the damping hole is small, the damping material 237 in the form of a fluid will generate resistance when passing through the damping hole, thereby dissipating the earthquake energy. At this time, the viscous damper 23 is used as the first stage energy dissipation, and in a smaller earthquake, the seismic energy can be dissipated by the viscous damper 23. The triangular energy dissipation plate 24 does not contact the top plate 25, and neither provides rigidity nor dissipates seismic energy. In addition, in this embodiment, the size of the damping force can be controlled by changing the size or number of the damping holes.

[0022] In one embodiment, a regulating valve 238 and a regulating oil cylinder 239 are further provided at one end of the cylinder 236 of the viscous damper 23 away from the piston rod 234 to adjust the pressure change in the cylinder 236 to avoid vacuum in the cylinder 236. The regulating valve 238 includes a through hole for the damping material 237 to pass through. When the piston 235 moves toward the regulating oil cylinder 239, the damping material 237 is squeezed. At the same time, as the piston rod 234 enters the cylinder 236, the volume inside the cylinder 236 decreases accordingly. In order to balance this volume change, the damping material 237 flows into the regulating oil cylinder 239 through the regulating valve 238. Conversely, when the piston 235 moves outward, the volume of the piston rod 234 entering the cylinder 236 decreases accordingly. At this time, the liquid in the regulating cylinder 239 flows outward through the regulating valve 238 to compensate for the increase in the internal volume of the cylinder body 236 caused by the withdrawal of the piston rod 234, thereby preventing the formation of a vacuum inside the cylinder body 236. This regulating process ensures the balance of the oil pressure of the active element 235 during movement and ensures the smooth operation of the entire system.

[0023] Combination Figures 2 to 3 As shown, the triangular energy dissipation plates 24 are distributed on both sides of the viscous damper 23. The triangular energy dissipation plates 24 can be provided with one, two or more, as required. The triangular energy dissipation plates 24 include a triangular body in the shape of an isosceles triangle and a square block formed on the top of the triangular body. The square block is located between two adjacent top plates 25, and a gap is formed between the top of the square block and the upper connecting plate 21. The bottom edge of the lower end of the triangular energy dissipation plate 24 can be welded to the lower connecting plate 22, and the upper end is spaced from the upper connecting plate 21. The triangular energy dissipation plates 24 are arranged vertically relative to the shear energy dissipation plates and are distributed on the left and right sides of the viscous damper 23. According to the judgment of the performance level of the energy dissipation and shock absorption structure and the macro judgment of the seismic performance target of the energy dissipation and shock absorption structure, the distance between the triangular energy dissipation plate 24 and the top plate 25 is adjusted for different building types and performance targets. The triangular energy dissipation plate 24 does not contact the top plate 25 in the case of a small earthquake, or is only in an elastic deformation state. When encountering a large earthquake or when the shear energy absorption plate is greatly deformed, the top plate 25 is brought into contact with the triangular energy absorption plate 24 and transmits the seismic force, so that it can enter the plastic state from the elastic state and cooperate with the viscous damper 23 to jointly dissipate the seismic energy, that is, the second stage of energy absorption.

[0024] During operation, when only a small earthquake occurs, the viscous damper 23 acts as the first stage of energy consumption and is used to begin to absorb earthquake energy. At this time, the triangular energy-absorbing plate 24 does not contact the top plate 25, and neither provides stiffness nor dissipates earthquake energy. When a medium or large earthquake occurs, the piston rod 234 of the viscous damper 23 moves toward the bottom of the cylinder. When it exceeds a certain value, it cannot provide sufficient damping force. At this time, the triangular energy-absorbing plate 24 begins to contact the top plate 25, and the earthquake action is transmitted to the triangular energy-absorbing plate 24 through the top plate 25, causing it to bend elastically to dissipate earthquake energy, or enter the plastic state from the elastic state to dissipate earthquake energy, completing the second stage of energy consumption, and completing the yield energy-dissipating process of the entire damper.

[0025] This embodiment combines the viscous damper 23 with the metal damper. In the case of a small earthquake, the structural stiffness will not be increased. At the same time, the viscous damper 23 can output sufficient damping force at a relatively low speed to dissipate the seismic energy. In the case of a medium or large earthquake, the triangular energy dissipation plate 24 participates in the action, which can improve the overall energy dissipation capacity of the damper and ensure the safety of the building. The single-rod viscous damper is improved to adjust the pressure change in the cylinder 236 to avoid the vacuum inside the cylinder 236. This design is suitable for earthquake-resistant design in my country where the design earthquake is a frequent earthquake. It contains multiple failure stages and provides multiple shock-absorbing defense lines for the building structure, which can meet the fortification requirements of low-intensity earthquakes and strong earthquakes at the same time. This design can avoid the use of multiple dampers for shock-absorbing design, reduce the difficulty of the overall design, and is very suitable for my country's shock-absorbing design requirements. At the same time, the structure is simple in structure, easy to manufacture, convenient to install, and very quick to replace after the earthquake. It has high convenience and is not only suitable for shock absorption of new buildings, but also for reinforcement and reconstruction of existing buildings. It can be adjusted according to different seismic fortification targets, and the gap distance between the triangular plate and the top plate 25 can be adjusted within a certain range to achieve a more convenient shock absorption design. It can be optimized and adjusted according to specific needs to meet the requirements of different seismic fortification targets.

[0026] It should be understood that the above are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0027] The above description of the drawings used in the implementation manner only shows certain embodiments of the utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

Claims

1. A rate-load-bearing multi-stage energy dissipation damper, comprising: The upper connecting plate and the lower connecting plate are characterized in that a viscous damper is arranged between the upper connecting plate and the lower connecting plate; a plurality of triangular energy-absorbing plates are arranged on the left and right sides of the viscous damper, the bottom end of the triangular energy-absorbing plate is vertically connected to the lower connecting plate, and the upper end thereof is spaced apart from the upper connecting plate; the bottom surface of the upper connecting plate is connected to a plurality of top plates symmetrically distributed on both sides of the triangular energy-absorbing plate, and the top plates are suitable for contacting the triangular energy-absorbing plate when the viscous damper is insufficient to output sufficient damping force, so as to The triangular energy-absorbing plate is bent under force; the viscous damper includes a connecting pin seat, a pin head, a pin shaft, a piston rod, a piston, a cylinder body, and a damping material, wherein two connecting pin seats are respectively fixed on the upper connecting plate and the lower connecting plate, one end of the cylinder body is hinged on the connecting pin seat of the upper connecting plate, the piston rod is inserted into the cylinder body and connected to the piston, and its outer end is hinged to the connecting pin seat of the lower connecting plate through the pin head, the cylinder body is filled with damping material, and the piston is provided with a plurality of damping holes suitable for the damping material to pass through.

2. The rate-load-bearing multi-stage energy dissipation damper according to claim 1 is characterized in that: The end of the cylinder body away from the piston rod is provided with a regulating valve and a regulating oil cylinder for regulating the pressure change in the cylinder body.

3. The rate-load-bearing multi-stage energy dissipation damper according to claim 1 is characterized in that: The triangular energy dissipation plate comprises a triangular main body and a square block formed on the top of the triangular main body. The square block is located between two adjacent top panels, and a gap is formed between the top end of the square block and the upper connecting plate.

4. The rate-load-bearing multi-stage energy dissipation damper according to claim 1, characterized in that: The triangular energy dissipation plate is made of Q235B steel.

5. The rate-load-bearing multi-stage energy dissipation damper according to claim 3 is characterized in that: The upper connecting plate, lower connecting plate and top plate are made of Q355B steel.

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