보도교 상판의 감쇠율 분석 = Analysis of Damping Ratio of Foot-bridges

다국어 초록 (Multilingual 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.

참고문헌 (Reference)

1 도기영, "휴대용 계측기를 이용한 보도교 진동계측분석" 한국공간구조학회 14 (14): 61-68, 2014

2 도기영, "보도교의 구조시스템별 고유진동수 분석" 한국강구조학회 26 (26): 375-383, 2014

3 Bachmann. H., "Vibration Problems in Structures:Practical Guidelines" Birkhauser Verlag Publications 1995

4 Yoon, S. W., "Vibration Measurement of Steel Foot-Bridge using Mobile Phone" 470 : 777-780, 2014

5 Korea Consumer, "Safety Situation of Foot-bridges" 1999

6 Seoul, "Facility Design, Construction and Maintenance Manuals, Research Report" 151-206, 2001

7 Yoo, M. S., "Effective Vibration Control of Pedestrian Bridge Using Tuned Mass Damper" KSSC 15 (15): 24-31, 2003

8 Jung, Eun-Bi, "Analysis on Damping Ratio of Steel Pedestrian Bridges by Beam Shape and Span Length" 2014

9 Do, K. Y., "Analysis of Natural Frequency through Vibration Measurement of Foot-bridges" Seoul National University of Science and Technology 2014

10 Kim, C. H., "A Study on the Decreasing Method and the Effects of Vibrations to the Human Body in Pedestrian Bridge" Chonnam National University, Korea 2008