Arakawa Toshiharu
Department Undergraduate School , School of Science and Technology Position Professor |
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Language | Japanese |
Publication Date | 2022/06 |
Type | Academic Journal |
Peer Review | Peer reviewed |
Title | Numerical modeling and modal analysis of base-isolated RC building |
Contribution Type | Co-authored (other than first author) |
Journal | Transactions of the JSME |
Journal Type | Japan |
Publisher | The Japan Society of Mechanical Engineers |
Volume, Issue, Page | 88(910),pp.1-12 |
Total page number | 12 |
Author and coauthor | Sachiko ISHIDA, Yukihiro ADACHI, Mitsuo NOTOMI and Toshiharu ARAKAWA |
Details | The purpose of this study is to identify natural frequencies and modes of a base-isolated building by modal analysis using finite element method. In general, multi-degree-of-freedom models are often used to analyze vibration properties of multi-story buildings; however, this modeling is hard to represent spatial behaviors of the buildings such as torsional vibration, and must be considered carefully in case to apply it to base-isolated buildings. In this study, we modelized a base-isolated RC building located in Meiji University as a frame structure combined with floor slabs and aseismic rubbers on the foundation, and computed the natural frequencies and modes of horizontal and torsional vibrations. . The primary and secondary natural frequencies of the numerical models agreed approximately with those given by measurements of ambient vibration and seismic waves. |