Pounding Mechanism and Mitigation Effect of Pounding between Adjacent Decks during Strong Earthquake

J. Ocean Eng. Technol. 2006;20(5):63-69.

Kwon, Young-Rog;Kim, Jin-Woo;Choi, Kwang-Kyu;

Dept. of Civil Engineering, College of Engineering, Dong-A Univ.;Dept. of Civil & Environment Engineering, Gyeongsang National Univ., Institute of Marine Industry;Dept. of Civil Engineering, College of Engineering, Dong-A Univ.;

강지진시 인접교량간의 충돌 매커니즘과 충격 저감 효과

권영록;김진우;최광규;

동아대학교 공과대학 토목공학과;경상대학교 토목공학공학부;동아대학교 공과대학 토목공학과;

Keywords: Isolated bridge, Pounding between adjacent bridges, Buffer rubber, Mitigation effect of pounding

핵심용어: 면진교량, 인접교량간 충돌, 완충고무, 충격저감효과

Abstract

An isolated bridge using a laminated rubber bearing provides an elastic support of continuous span and prevents the transmission of excessive seismic force from the substructure of the bridge, which uses a metal bearing, as this permits a relative displacement between the super-and substructure. Hawever, this kind of bridge is caused long periodic, as a result of enlargingtotal thickness of the rubber, since it corresponds to temperature change and increases the horizontal displacement of the superstructure. This paper uses a numerical study to describe the pounding problem between adjacent decks when subjected to a strong earthquake. Furthermore, numerical results are clarified for the buffer rubber used to mitigate the pounding force between adjacent decks.