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2019年10月から本学建築学科にJSPS研究員(日本学術振興会)として滞在している宋暁(ソン・ショウ/Song Xiao)先生を紹介します。

宋先生は中国の河南大学土木学部の先生で、JSPS奨学金※を獲得し、現在建築学科で中間免震層構造物の研究を行っています。

以下は宋先生からの研究成果についてのコメントです。
The Mid-story isolated (MSI) system is proved to be effective in reducing the seismic response of structures. Due to variability of the location of the isolation layer, modal coupling between higher modes may amplify the seismic response of MSI buildings, defined as modal coupling effect (MCE). In order to verify the results of theoretical analysis and evaluate the seismic response of MSI system, a series of shaking table tests were conducted with three scaled-down steel frame structural models with different frequency ratios between upper structure (US) and lower structure(LS). Three earthquake records with various peak ground acceleration (PGA) levels were selected as inputs of uniaxial shaking table tests. Results indicate that the acceleration responses of US of the case with MCE (denoted as Case 2) are apparently amplified compared with cases without MCE (denoted as Case 1 and 3).

※ 宋先生は本建築学科が設立して以来初めてのJSPS奨学金研究者です。