### 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 language | English |
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Pages (from-to) | 621-633 |

Number of pages | 13 |

Journal | Structural Engineering and Mechanics |

Volume | 10 |

Issue number | 6 |

Publication status | Published - 2001 Dec |

Event | US-Korea Worshop on New Frontier in Infrastructural/Seismic Engineering - Seoul, South Korea Duration: 1999 Aug 24 → 1999 Aug 25 |

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### All Science Journal Classification (ASJC) codes

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

### Cite this

*Structural Engineering and Mechanics*,

*10*(6), 621-633.

}

*Structural Engineering and Mechanics*, vol. 10, no. 6, pp. 621-633.

**Dynamic behaviors of the bridge considering pounding and friction effects under seismic excitations.** / Kim, Sang Hyo; Lee, Sang Woo; Mha, Ho Seong.

Research output: Contribution to journal › Conference article

TY - JOUR

T1 - Dynamic behaviors of the bridge considering pounding and friction effects under seismic excitations

AU - Kim, Sang Hyo

AU - Lee, Sang Woo

AU - Mha, Ho Seong

PY - 2001/12

Y1 - 2001/12

N2 - 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.

AB - 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.

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M3 - Conference article

AN - SCOPUS:0342903186

VL - 10

SP - 621

EP - 633

JO - Structural Engineering and Mechanics

JF - Structural Engineering and Mechanics

SN - 1225-4568

IS - 6

ER -