Journal of Korean Association for Spatial Structures (한국공간구조학회논문집)

Korean Association for Spatial Structures (한국공간구조학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Damping Ratio of Foot-bridges

보도교 상판의 감쇠율 분석

  • Yoon, Sung-Won (Seoul National University of Science & Technology School of Architecture) ;
  • Moon, Sang-Hyouen (Seoul National University of Science & Technology School of Architecture, Department of Architectural Engineering)
  • 윤성원 (서울과학기술대학교 건축학부) ;
  • 문상현 (서울과학기술대학교 건축학과)
  • Received : 2014.08.01
  • Accepted : 2014.09.19
  • Published : 2014.12.15
Download PDF
⟨ Previous Next ⟩

Abstract

In Seoul, total 27 places of foot-bridges were chosen to evaluate the damping ratio through vibration measurement by mobile-phone application. Model vibration test was performed to compare the natural frequency and damping ratio between the conventional accelerometer and mobile-phone application. Measured average damping was compared with the one of Bachmann. The relation between the damping ratio and span was also investigated. Measured average damping ratio was greater than that of Bachmann. It was shown that there is no distinct trend between damping and span.

Keywords

References

  1. Yoo, M. S., Yoon, T., Y. and Kurabayashi, H. Effective Vibration Control of Pedestrian Bridge Using Tuned Mass Damper, Journal of Korean Society of Steel Construction, KSSC, Vol. 15, No. 3, 2003, pp. 24-31 (in Korean).
  2. Do, K. Y., Analysis of Natural Frequency through Vibration Measurement of Foot-bridges, M.S. dissertation, Seoul National University of Science and Technology, 2014. 2, Korea (in Korean).
  3. Kim, C. H., A Study on the Decreasing Method and the Effects of Vibrations to the Human Body in Pedestrian Bridge, M.S. dissertation, Chonnam National University, Korea, 2008 (in Korean).
  4. Korea Consumer, Safety Situation of Foot-bridges, Survey Report, Korea. 1999
  5. Bachmann. H., Pretlove. A. J., and Rainer. H., Vibration Problems in Structures: Practical Guidelines, Birkhauser Verlag Publications, Basel. 1995
  6. Seoul, Facility Design, Construction and Maintenance Manuals, Research Report, 2001, pp. 151-206, Korea.
  7. Yoon, S. W., Do, K. Y., Ryu, J. H. and Ju, Y. K., Vibration Measurement of Steel Foot-Bridge using Mobile Phone, Applied Mechanics and Materials, Vol. 470, 2014, pp. 777-780.
  8. Do, Ki-Young, Yoon, Sung-Won, Kim, Do-Hyun, Vibration Measurement of Foot-Bridge using Mobile Phone, J of the Korean Association for Spatial Structure Vol. 14, No1, 2014, pp. 61-68. https://doi.org/10.9712/KASS.2014.14.1.061
  9. Do, Ki-Young, Yoon, Sung-Won, Analysis of Natural Frequency according to Span of Foot-bridges, J of the Korean Society of Steel Structure (in press)
  10. Jung, Eun-Bi, Yeom, Hee-Jin, Yoon, Sung-Won, Analysis on Damping Ratio of Steel Pedestrian Bridges by Beam Shape and Span Length, Proceedings of KASS Symposium, May. 23. 2014