THE STUDY OF PERFORMANCE ON BASE-ISOLATED DESIGN PARAMETERS THROUGH ENTROPY-BASED CLASSIFICATION

摘要

Properly designed base isolation devices can effectively improve the responses of isolated structures during earthquake excitations. Strategies of optimal designs on base isolation systems are usually achieved through procedures with multiple adjustments of system parameters based on observations of system responses. However, it is time-consuming if (1) initial design parameters are not properly selected, such as insensitive or out of range; or (2) different earthquakes are considered for the excitations of a base isolation system. Hence, if the ranges of inputs (design parameters) could be reasonably estimated through concise techniques to obtain suitable outputs (structural responses), then, the computational efforts could be reduced. Entropy-based classification (EBC) method is applied to achieve this objective. A case study of base-isolated machinery located at Central Science Park in Taiwan area is presented to narrow down the ranges of parameters. Results are successfully attained to reduce the structural responses of a precision machinery system and rational outcomes are drawn.