Multi-stage multi-energy-consumption mild steel damper
By vulcanizing high-damping rubber and mild steel energy-consuming plates to form composite energy-consuming components, and combining the design of lead rods and stops, the multi-stage and multiple energy consumption effect in traditional dampers is achieved, solving the problem of damage caused by a single energy-consuming mechanism and high deformation in earthquakes, and improving the seismic resistance of the building structure.
Patent Information
- Application Number
- CN202422217788.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-10
AI Technical Summary
Traditional shear-type mild steel dampers are damaged due to a single energy consumption mechanism and high deformation during earthquakes, and the design limit displacement is insufficient, so they cannot effectively exert energy consumption functions, affecting the safety of the building structure.
Multi-stage multi-energy-consuming mild steel damper is used to vulcanize high-damping rubber and mild steel energy-consuming plates to form a composite energy-consuming component, and combine the design of lead rods and stops to achieve a combination of speed-type and displacement-type energy-consuming mechanisms to achieve multi-stage energy consumption.
It can effectively exert energy consumption under various earthquake conditions, protect the safety of building structures, extend the service life of the damper, and solve the problem of insufficient design limit displacement.
Smart Images
Figure CN223003570U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a multi-stage and multi-energy-consuming mild steel damper, belonging to the technical field of building energy dissipation and seismic reduction. Background Technique
[0002] Earthquakes are very serious natural disasters. During an earthquake, surface buildings will be distorted and deformed. When the earthquake is relatively strong, they may even collapse, causing huge economic losses and casualties. To reduce building earthquake disasters, energy dissipation and seismic reduction technologies have received extensive attention. China is a country with frequent earthquakes. Improving the seismic performance of building structures is of great significance for ensuring the safety of structures.
[0003] Traditional shear-type mild steel (low yield point steel) dampers are widely favored for their strong plastic deformation of low yield point metals, stable and full hysteresis curves, simple forms, and convenient processing. The energy dissipation mechanism of traditional shear-type mild steel dampers is single. A single yield point cannot achieve multi-stage energy dissipation. When the deformation is not large, excessive out-of-plane buckling will occur in the shear web, resulting in damage to the energy dissipation web of the damper, seriously affecting the use of the shear damper. When experiencing a large earthquake and large deformation, traditional shear-type mild steel dampers often have excessive plastic deformation by themselves and need to be completely replaced after the earthquake. And the aftershocks accompanying the earthquake cause certain damage to the structure. Under the action of reciprocating loads, the plastic deformation of the mild steel energy dissipation plate of the traditional shear-type mild steel damper is concentrated in the middle part, which is extremely prone to fatigue hardening and lead to damage, and the utilization efficiency of the mild steel energy dissipation steel plate is not high. In addition, the problem of the mild steel damper in the actual seismic reduction project is that if the design ultimate displacement is too small, it will be torn by the large deformation caused instantaneously by the earthquake action, and the energy dissipation effect cannot be fully exerted and it will fail. Summary of the Invention
[0004] To overcome the above problems, the utility model provides a multi-stage and multi-energy-consuming mild steel damper, which realizes the combination of a velocity-type energy dissipation mechanism and a displacement-type energy dissipation mechanism and achieves multi-stage energy dissipation.
[0005] The utility model adopts the following technical scheme:
[0006] A multi-stage and multi-energy-consuming mild steel damper includes: an energy dissipation mild steel plate fixed between an upper connecting plate and a lower connecting plate, and the three form an I-shaped structure; high damping rubber and ordinary steel plates are arranged on the left and right sides of the energy dissipation mild steel plate from the inside to the outside. Horizontal reserved holes are provided between the high damping rubber on both sides and the energy dissipation mild steel plate for inserting lead bars, and stoppers are arranged at a certain distance on the front and back sides of the energy dissipation mild steel plate.
[0007] Further, the high damping rubber on both sides and the energy dissipation mild steel plate are vulcanized to form a composite energy dissipation component.
[0008] Further, the bottoms of the ordinary steel plate and the high-damping rubber are fixed on the lower connecting plate, and the tops are flush and have a gap with the upper connecting plate.
[0009] Further, the distance between the stop block and the energy-dissipating soft steel plate is the displacement difference between the first and second deformation stages.
[0010] Advantages of the present utility model:
[0011] (1) In the present utility model, the high-damping rubber and the soft steel energy-dissipating plate are integrally vulcanized at high temperature to replace a single ordinary soft steel energy-dissipating plate, realizing the combination of a velocity-type energy-dissipating mechanism and a displacement-type energy-dissipating mechanism, enabling multi-stage energy dissipation, and being able to play an energy-dissipating role under frequent earthquakes, fortification earthquakes, and rare earthquakes, and effectively protecting the safety of building structures in earthquakes at all levels. Specifically, the first stage corresponds to small earthquakes, and the lead bar and the high-damping rubber jointly play an energy-dissipating effect, thus meeting the requirement of not being damaged under small earthquakes; the second stage corresponds to large earthquakes. In addition to the energy dissipation of the lead bar and the high-damping rubber, the energy-dissipating soft steel plate yields and dissipates energy, playing a huge role to ensure that the structure does not collapse under large earthquakes; realizing multi-stage energy dissipation of the composite energy-dissipating component.
[0012] (2) The damaged lead bar during the first-stage small deformation can be replaced in time, breaking the drawback of traditional energy-dissipating dampers that can only be replaced entirely after being damaged, saving the construction cost:
[0013] (3) During the second-stage large deformation, the distance between the energy-dissipating soft steel plate and the stop block can record the displacement difference that occurs, facilitating better design of the ultimate displacement and solving the problem of too small ultimate displacement in actual shock-absorbing engineering. Description of the drawings
[0014] Figure 1 is the three-dimensional view of the multi-stage and multi-energy dissipation soft steel damper of the present utility model;
[0015] Figure 2 is the three-dimensional sectional view of the multi-stage and multi-energy dissipation soft steel damper of the present utility model
[0016] Figure 3 is the front view and sectional view of the multi-stage and multi-energy dissipation soft steel damper of the present utility model;
[0017] Figures 1 - 3 In the figures, the reference numerals: 1 energy-dissipating soft steel plate, 2 high-damping rubber, 3 lead bar, 4 ordinary steel plate, 5 upper connecting plate, 6 lower connecting plate, 7 stop block. Specific implementation manner
[0018] The following further describes the present utility model with reference to the drawings and specific embodiments.
[0019] As Figures 1 - 3As shown in the figure, a multi-stage and multi-energy dissipation soft steel damper includes: an energy dissipation soft steel plate 1 fixed between an upper connecting plate 5 and a lower connecting plate 6, and the three form an I-shaped structure; on the left and right sides of the energy dissipation soft steel plate 1, high-damping rubber 2 and ordinary steel plates 4 are provided from the inside to the outside. Horizontal holes are reserved between the high-damping rubber 2 on both sides and the energy dissipation soft steel plate 1 for inserting lead rods 3. At a certain distance from the front and back sides of the energy dissipation soft steel plate 1, stoppers 7 are provided.
[0020] Specifically, the high-damping rubber 2 on both sides and the energy dissipation soft steel plate 1 are vulcanized to form a composite energy dissipation component. The high-damping rubber 2 and the soft steel energy dissipation plate 1 are integrally vulcanized. The constraint relaxation effect of the high-damping rubber 2 is used to relieve the fatigue of the soft steel energy dissipation plate 1, further improving the fatigue resistance of the damper.
[0021] Specifically, the bottoms of the ordinary steel plates 4 and the high-damping rubber 2 are fixed on the lower connecting plate 6, and the tops are flush and have a gap with the upper connecting plate 5 to isolate the connection between the upper connecting plate 5 and the ordinary steel plate 4.
[0022] During production, first, the energy dissipation soft steel plate 1 is welded to the upper connecting plate 5, and then the energy dissipation soft steel plate 1 is first subjected to shot blasting, sand blasting, and adhesive coating processes. Subsequently, the high-damping rubber 2 and the soft steel energy dissipation plate 1 with the upper connecting plate 5 are bonded and integrally vulcanized at high temperature to form a composite energy dissipation component. Before vulcanization, horizontal holes are reserved between the high-damping rubber 2 and the energy dissipation soft steel plate 1 to facilitate the subsequent consumption and replacement of the lead rods 3. Finally, the ordinary steel plate 4 welded to the lower connecting plate 6 seals the composite energy dissipation component.
[0023] During an earthquake, in the first stage of small deformation, the lead rods first shear and yield, exerting part of the energy dissipation effect. The high-damping rubber has excellent shock absorption ability and can exert the energy dissipation effect. In the second stage, when large deformation occurs, the middle energy dissipation soft steel plate yields and exerts most of the energy dissipation effect; realizing multi-energy dissipation of the composite energy dissipation component.
[0024] There are stoppers 7 at a certain distance from the front and back sides of the energy dissipation soft steel plate 1. As Figure 3 shown, the distance between the stopper 7 and the energy dissipation soft steel plate 1 is the displacement difference between the first stage and the second stage of deformation. During the second stage of large deformation, the displacement difference that occurs can be recorded, which is convenient for better designing the ultimate displacement and solving the problem of too small ultimate displacement in the actual shock absorption project.
Claims
1. A multi-stage multi-energy dissipation soft steel damper, characterized in that: include: An energy-absorbing soft steel plate (1) is fixed between an upper connecting plate (5) and a lower connecting plate (6), and the three form an I-shaped structure; high damping rubber (2) and ordinary steel plates (4) are provided on the left and right sides of the energy-absorbing soft steel plate (1) from the inside to the outside, and holes are reserved in the horizontal direction between the high damping rubber (2) and the energy-absorbing soft steel plate (1) on both sides for inserting a lead rod (3); and stoppers (7) are provided at a certain distance on the front and rear sides of the energy-absorbing soft steel plate (1).
2. A multi-stage multi-energy dissipation mild steel damper according to claim 1, characterized in that: The high damping rubber (2) on both sides is vulcanized with the energy absorbing soft steel plate (1) to form a composite energy absorbing component.
3. The multi-stage multi-energy dissipation mild steel damper according to claim 1 is characterized in that: The bottoms of the common steel plate (4) and the high damping rubber (2) are fixed on the lower connecting plate (6), and the tops are flush with the upper connecting plate (5) with a gap therebetween.
4. The multi-stage multi-energy dissipation mild steel damper according to claim 1 is characterized in that: The distance between the stopper (7) and the energy-absorbing mild steel plate (1) is the displacement difference between the first stage and the second stage of deformation.