一种自复位耗能支撑装置
By designing a self-resetting energy-dissipating support device, combined with an energy-dissipating SMA rod and a nested sleeve structure, the problems of buckling bracing not being able to recover and insufficient reset force of self-resetting supports in the existing technology are solved. This achieves complete self-resetting of the support and efficient energy dissipation, and simplifies the connection structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LANKE STEEL STRUCTURE TECH DEV
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
In existing building vibration reduction technologies, buckling-resistance braces cannot recover after plastic deformation, self-resetting braces have insufficient reset force, friction-type energy dissipation devices age, and dual-system support connections are complex with poor coupling between the energy dissipation system and the reset system, resulting in numerous node connectors, large installation space, and short lifespan.
A self-resetting energy-dissipating support device is adopted, including an energy-dissipating unit and a self-resetting unit. It utilizes energy-dissipating SMA rods, high-strength tie rods, nested sleeve structures, and CFRP prestressed tendons. Through the design of inner and outer sleeve sliding and prestressed tendons, the support achieves self-resetting and energy-dissipating functions.
It achieves complete self-resetting of the support, reduces production and processing costs and construction difficulty, improves elongation capacity, avoids aging problems of friction energy dissipation devices, and simplifies the connection structure.
Smart Images
Figure CN224514464U_ABST
Abstract
Claims
1. A self-centering energy dissipation brace, characterized by include: Energy dissipation unit and self-resetting unit; the energy dissipation unit includes an energy dissipation SMA rod and a high-strength tie rod subjected to series stress; the self-resetting unit includes a nested sleeve structure and CFRP prestressed tendons; The nested sleeve structure includes an inner sleeve and an outer sleeve. The inner sleeve slides along the axial direction of the outer sleeve. The outer sleeve is provided with a left end plate, a middle end plate, and a right end plate in sequence along the axial direction. The left end plate is fixedly abutted against the left end of the outer sleeve, and the middle end plate is fixedly disposed in the middle of the outer sleeve. The right end plate is fixedly abutted against the right end of the outer sleeve.
2. The self-centering energy dissipating brace apparatus of claim 1, wherein: The energy-dissipating SMA rod consists of two rods, which are respectively located on both sides of the outer sleeve and fixed to the middle end plate and the right end plate by the first nut. The outer sleeve is also provided with multiple evenly distributed energy-dissipating rod fixing parts for the energy-dissipating SMA rods to pass through and be fixed.
3. The self-centering energy dissipating brace apparatus of claim 2, wherein: The energy-consuming rod fixing component is welded to both sides of the outer sleeve and is composed of a first steel plate and a second steel plate with U-shaped grooves stacked together. The grooves of the first steel plate and the second steel plate are opposite to each other, forming a through hole for the energy-consuming SMA rod to pass through and be fixed. A fixing clamp is also provided on the outer side of the first steel plate and the second steel plate respectively. The fixing clamp is connected to the first steel plate and the second steel plate by bolts.
4. The self-centering energy dissipation brace of claim 1 or 2, wherein: The energy-consuming SMA rod is made of Fe-SMA shape memory alloy material.
5. The self-centering energy dissipating brace apparatus according to claim 1, wherein: The high-strength tie rods are multiple and are located on the upper and lower surfaces of the outer sleeve. One end is fixed to the left end plate by the second nut, and the other end is fixed to the middle end plate by the JXS type pre-tensioning clamp.
6. The self-centering energy dissipating brace apparatus of claim 1 or 5, wherein: The high-strength tie rod is made of 42CrMo high-strength alloy structural steel.
7. The self-centering energy dissipating brace apparatus according to claim 1, wherein: The left end plate is welded to the outer side with a first connecting plate, which connects it to the building structure.
8. The self-centering energy dissipating brace apparatus according to claim 1, wherein: The right end plate has slots at its upper and lower ends that mate with the outer sleeve; the upper and lower surfaces of the rightmost end of the outer sleeve have two second connecting plates that extend outward axially; the second connecting plates are engaged in the slots of the right end plate.
9. The self-centering energy dissipating brace of claim 1, wherein: The inner sleeve is disposed inside the outer sleeve, passing through the left end plate on the left side. The upper and lower ends of the left end plate have slots, and the right side is pressed against the right end plate. Lubricating material is evenly applied between the inner sleeve and the outer sleeve, and the two sleeves move relative to each other.
10. The self-centering energy dissipating brace apparatus according to claim 1, wherein: The CFRP prestressing tendons are made of carbon fiber reinforced matrix composite material and are fixed to the left end plate and the right end plate by prestressing tendon anchoring clamps.