一种内嵌负泊松比耗能元件的双屈服点U型阻尼器
By using a double-yield-point U-shaped damper with an embedded negative Poisson's ratio energy dissipation element, the problem of insufficient energy dissipation of existing dampers under frequent and rare earthquakes has been solved. This enables phased yielding and detachable replacement, thereby improving the seismic performance and energy dissipation efficiency of the structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING UNIV OF TECH
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-17
AI Technical Summary
Existing metal dampers fail to fully utilize their energy dissipation function under frequent earthquakes, suffer severe stiffness degradation under rare earthquakes, and are severely damaged after earthquakes, making it impossible to quickly restore structural function.
The design incorporates a double-yield-point U-shaped damper with an embedded negative Poisson's ratio energy dissipation element. Through the combination of a nested U-shaped structure and a negative Poisson's ratio plate, it achieves staged yielding, including the coordinated work of first-order and second-order energy dissipation components, enhancing shear and energy dissipation capabilities, and supporting detachable replacement.
It achieves first-order energy dissipation under frequent earthquakes and second-order energy dissipation under rare earthquakes, improving the energy dissipation capacity of the damper, reducing structural damage, ensuring stability and replaceability, and reducing material costs.
Smart Images
Figure CN224514462U_ABST
Abstract
Claims
1. A dual-yield U-shaped damper with embedded negative Poisson's ratio energy dissipation elements, characterized by, include: The first energy-consuming component is configured as a U-shape. The second energy-consuming component is configured as a U-shape. The second energy-consuming component and the first energy-consuming component are arranged in the same horizontal direction, and the second energy-consuming component is nested in the U-shaped structure of the first energy-consuming component. One side of the U-shaped structure of the second energy-consuming component is movably connected to one side of the U-shaped structure of the first energy-consuming component, and the other side of the U-shaped structure of the second energy-consuming component is fixedly connected to the other side of the U-shaped structure of the first energy-consuming component. The first negative Poisson ratio plate is fixedly connected to the U-shaped structure of the first energy-consuming component; as well as The second negative Poisson ratio plate is arranged parallel to the first negative Poisson ratio plate and fixedly connected within the U-shaped structure of the second energy-consuming component.
2. The dual-yield U-shaped damper with embedded negative Poisson's ratio energy-dissipating elements according to claim 1, characterized in that, The U-shaped structure of the first energy-consuming component and the U-shaped structure of the second energy-consuming component each include two straight segments and one arc segment. The dimensions of the two straight segments of the first energy-consuming component are larger than the dimensions of the two straight segments of the second energy-consuming component, and the radius of the arc segment of the first energy-consuming component is larger than the radius of the arc segment of the second energy-consuming component.
3. The dual-yield U-shaped damper with embedded negative Poisson's ratio energy-dissipating elements according to claim 2, characterized in that, The arc segment of the first energy-consuming component is sleeved outside the arc segment of the second energy-consuming component. The straight segment on one side of the first energy-consuming component is movably connected to the straight segment on one side of the second energy-consuming component, and the straight segment on the other side of the first energy-consuming component is fixedly connected to the straight segment on the other side of the second energy-consuming component.
4. The dual-yield U-shaped damper with embedded negative Poisson's ratio energy-dissipating elements of claim 2, wherein, The first energy-consuming component has a first screw hole on each of the straight sections on both sides, and the second energy-consuming component has an elongated hole on one side of the straight section and a second screw hole on the other side of the straight section.
5. The dual-yield U-shaped damper with embedded negative Poisson's ratio energy-dissipating elements of claim 2, wherein, Also includes: A brass pad is provided between a straight section on one side of the first energy-consuming component and a straight section on one side of the second energy-consuming component, and a third screw hole is provided at one end of the pad. The pad is screwed and fixed to the straight section on one side of the first energy-consuming component.
6. The dual-yield U-shaped damper with embedded negative Poisson's ratio energy-dissipating elements of claim 1, wherein, Both the first negative Poisson's ratio plate and the second negative Poisson's ratio plate are planar plates, and both the first negative Poisson's ratio plate and the second negative Poisson's ratio plate have multiple peanut-shaped holes.
7. The dual-yield U-shaped damper with embedded negative Poisson's ratio energy-dissipating elements according to claim 6, characterized in that, The peanut-shaped holes are arranged in a staggered array on the first negative Poisson's ratio plate and the second negative Poisson's ratio plate.
8. The dual-yield U-shaped damper with embedded negative Poisson's ratio energy-dissipating elements of claim 2, wherein, At least two first negative Poisson ratio plates are provided, and the at least two first negative Poisson ratio plates are symmetrically arranged along the length direction of the straight section of the first energy-consuming component and are respectively located on both sides of the straight section of the second energy-consuming component.
9. The dual-yield U-shaped damper with embedded negative Poisson's ratio energy-dissipating elements of claim 2, wherein, One second negative Poisson's ratio plate is provided, and one second negative Poisson's ratio plate is provided along the length direction of the straight section of the second energy-consuming component.
10. The double-yield-point U-shaped damper with an embedded negative Poisson's ratio energy-dissipating element according to claim 1, characterized in that, Both the first negative Poisson's ratio plate and the second negative Poisson's ratio plate are made of any one of the following materials: Iron-based shape memory alloy materials; Aluminum alloy steel material; Low yield point steel materials.