Dynamic behaviors of the bridge considering pounding and friction effects under seismic excitations

Sang Hyo Kim, Sang Woo Lee, Ho Seong Mha

Research output: Contribution to journalConference article

21 Citations (Scopus)

Abstract

Dynamic responses of a bridge system with several simple spans under longitudinal seismic excitations are examined. The bridge system is modeled as the multiple oscillators and each oscillator consists of four degrees-of-freedom system to implement the poundings between the adjacent oscillators and the friction at movable supports. Pounding effects are considered by introducing the impact elements and a bi-linear model is adopted for the friction force. From the parametric studies, the pounding is found to induce complicated seismic responses and to restrain significantly the relative displacements between the adjacent units. The smaller gap size also restricts more strictly the relative displacement. It is found that the relative displacements between the abutment and adjacent pier unit become much larger than the responses between the inner pier units. Consequently, the unseating failure could take a place between the abutment and nearby pier units. It is also found that the relative displacements of an abutment unit to the adjacent pier unit are governed by the pounding at the opposite side abutment.

Original languageEnglish
Pages (from-to)621-633
Number of pages13
JournalStructural Engineering and Mechanics
Volume10
Issue number6
Publication statusPublished - 2001 Dec
EventUS-Korea Worshop on New Frontier in Infrastructural/Seismic Engineering - Seoul, South Korea
Duration: 1999 Aug 241999 Aug 25

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All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering

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