一种多层复合SMA的自锚固自补偿加固装置及方法
Through the multi-layer composite SMA plate structure, the self-locking and self-compensating SMA plate automatically compensates for the prestress loss of the reinforcing SMA plate under changes in ambient temperature. This solves the problem of prestress attenuation under changes in ambient temperature in the existing SMA reinforcement technology, and realizes self-anchoring and self-compensation without secondary thermal excitation, thereby improving the safety and long-term service performance of the steel structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGZHOU UNIVERSITY
- Filing Date
- 2026-05-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing SMA reinforcement technology suffers from shape memory effect attenuation under environmental temperature changes, leading to prestress loss. It is difficult to achieve continuous and automatic prestress compensation without interrupting structural service. Furthermore, it is difficult to process and causes stress concentration, affecting long-term bonding reliability.
The structure employs a multi-layer composite SMA plate, including a self-locking and self-compensating SMA plate and a reinforcing SMA plate. Through pre-stretching and thermal excitation shaping treatment, the self-locking and self-compensating SMA plate automatically compensates for the prestress loss of the reinforcing SMA plate under changes in ambient temperature, achieving self-anchoring and self-compensation without the need for secondary thermal excitation.
Without relying on secondary thermal excitation, automatic compensation and long-term maintenance of prestress in SMA plates are achieved, improving the safety and long-term service performance of steel structure reinforcement systems, simplifying the construction process, and reducing the risk of stress concentration.
Smart Images
Figure CN122169651B_ABST