Earthquake Engineering Research - HKU Libraries - The University ...

412
-OA -«— 03A -
-09A X -Control
-06A
R
t 3
100 200 300
Accelerator! fcm/s/s)
(a) Absolute acceleration
10 20
D isplacem ent fcm )
(b) Relative displacement
Figure 10: Average values of response of each story of positive side and negative side
(El Centra 1940 NS, Maximum velocity is 50 cm/sec)
30
CONCLUSIONS
This paper has described the characteristics of a large-scale test frame. One test frame was used for
four series of experimental tests to verify each developing technology, such as semi-active control for
base-isolation and seismic response control, damage detection and rocking energy dissipation. This
large-scale experimental test verified the validity of application of those systems to smart structures,
and useful experimental results were obtained for the settlement of future research. As one of the test
results, authors verified that an MR damper can reduce the response displacements while reducing the
response acceleration.
ACKNOWLEGEMENT
This work has been carried out under the US-Japan cooperative structural research project on Smart
Structure Systems (Chairperson of Japanese side: Prof. S. Otani, University of Tokyo, Chairperson of
U.S. side: Prof. M. A. Sozen, Purdue University). We would like to acknowledge the hard work and
contribution of all members of the project for their useful advice and suggestions.
REFERENCES
Fujitam H., Sodeyama H., Haia K., Iv/ata N., Komatsu Y., Sunakoda K. and Soda S. (2000)
Dynamic Performance Evaluation of Magneto-Rheological Damper, Proceedings of Advances in Structural Dynamics 2000,
Vol.1, pp 319-326.
Kamopp, D., Crosby, M. J. and Harwood, R. A. (1974). Vibration Control Using Semi-Active Force Generators, Journal of Engineering
for Industry, Transactions of ASME, May 1941, pp.619-626.
Midonkawa M., Azuhata T., Ishihara T, Matsuba Y., Mtsushima Y. and Wada A. (2002) Earthquake response reduction of buildings by
Monta
rocking structural systems, Proc.of SPIE's 9th. International Symposium on Smart Structures and Materials, Paper No. 4696-
33
K, Teshigawara M., Isoda H., Hamamoto T. and Mita A. (2001) Damage Detection Tests of Five-Story Steel Frame with
Simulated Damages, Proc of SPIE's 6th International Symposium on NDE for Health Monitoring and Diagnostics, Paper No.
4335-18
Otani S., Hiraishi H. r Midonkawa M., Teshigawara M., Saito T. and Fujitani H. (2000)
Development of Smart Systems for Building Structures (Invited paper), Proc.of SPIE's 7th. International Symposium on Smart
Structures and Materials, Paper No. 3988-01.