Multi-performance Structural Systems with Variable Mechanical Properties for Vibration Mitigation

Lyan-Ywan Lu, National Cheng Kung University
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Modern performance-based design requires structural systems, especially those of functional facilities (such as hospital, high-tech factories), to satisfy multiple design performance objectives for different earthquake levels or to mitigate damage due to multiple hazards. Such requirements would be very difficult to be achieved by conventional structural systems of constant mechanical property. A promising solution for this problem can be to develop structure systems with variable mechanical properties. The general features of these advanced structural systems may include: (1) they exhibit different mechanical properties under different seismic loads or different type of excitations. (2) They are usually nonlinear or inelastic, but their mechanical properties can be precisely defined and realized. (3) They can be realized by using novel protective devices (such as isolators or dampers), assembly of novel sub-structural systems or novel structural constituent members. This mini-symposium invites presenters to discuss and exchange research ideas or findings in developing this relatively new hazard mitigation technology in all aspects, including modeling, simulation, design, applications, monitoring and experimental verification, etc.