Fundamental study on anti-seismic mechanism of traditional wooden structures Based on Field research and the experimental approach using high speed on-line Actuator system

2003 Fiscal Year Final Research Report Summary

• Project/Area Number: 12450252
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Architectural history/design
• Research Institution: KYOTO UNIVERSITY
• Principal Investigator: NISIZAWA Hidekazu NISIZAWA,Hidekazu, 工学研究科, 講師 (70127116)
• Co-Investigator(Kenkyū-buntansha): FUJISAWA Akira Shibaura Institute of Technology, Department of Architecture, Professor, 工学部, 教授 (10190026) ; HYUGA Susumu Kyoto Institute of Technology, Faculty of Engineering and Design, Professor, 工芸科学研究科, 教授 (60111994) ; ISHIDA Junichirou Kyoto Institute of Technology, Faculty of Engineering and Design, Professor, 工芸科学研究科, 教授 (80151372) ; FUJITA Kaori Tokyo Metropolitan Univ., Graduate School of Engineering, Assistant Professor, 工学研究科, 講師 (20322349) ; KOMATSU Kouhei Wood Research Institute, Professor, 木質科学研究所, 教授 (20283674)
• Project Period (FY): 2000 – 2003
• Keywords: wooden structures / base-isolated

Research Abstract

The results obtained in this research project will be summarized as follows.
1) Development of a new On-line actuator system
We have also succeeded in developing new catalytic asymmetric reactions including rhodium-catalyzed asymmetric 1,4-addition and palladium-catalyzed asymmetric hydrosilylation of olefins.
2) In Situ Experiment of Japanese traditional wooden structures.
2.1 Folk house located in Siga Province
In order to gather the accurate data on the seismic strength of existing Old Japanese folk house in Koga in Siga, we have conducted a series of test-shaking and static loading tests at several stages of dismantling.
Our group have reviled that the actual horizontal resisting strength is much higher than that is estimated by common formula neglecting a moment resisting capacities of large columns and girders.
2.2 Main pavilion of Nisi-Honganji
A lot of velocity and acceleration sensor are set on various location in Main pavilion of Nisi-Honganji under restoration. In this Experiment, Shock waves are input to the base and columns. The primary wave runs faster in the frame than the surface of the ground.
It was interesting that the large wooden structure dose not behaves of a frame with rigid floor system which can transport shear force.