Effects of the earthquake-induced pounding upon pier motions in the multi-span simply supported steel girder bridge

Jeong Hun Won, Ho Seong Mha, Sang Hyo Kim

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The earthquake-induced pounding effects on bridge piers are investigated by analyzing dynamic responses of a three-span simply supported steel girder bridge. Using a simplified and idealized analytical model reflecting random characteristics of seismic excitations, maximum pier responses are evaluated. The nonlinear behaviors of reinforced concrete piers and pounding between adjacent bridge decks are included in the analytical model by utilizing a nonlinear hysteresis model and an impact element (a linear viscoelastic model), respectively. From the results of time history analysis, it is found that pounding between adjacent vibration units reduces the pier forces and displacements by restricting the pier motions. As the peak ground acceleration increases, the results of the case without consideration of pounding shows the impractically large pier displacements in the hysteresis model by ignoring restriction of pier motions due to pounding. The results according to the gap distance between impact elements show that the size of gap distance is heavily correlated to the nonlinear pier behaviors. Therefore, the effects of pounding and nonlinear pier behaviors should be considered together to reflect the bridge responses correctly.

Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalEngineering Structures
Volume93
DOIs
Publication statusPublished - 2015 Jun 5

Fingerprint

Piers
Earthquakes
Steel
Bridge piers
Hysteresis
Analytical models
Bridge decks
Dynamic response
Reinforced concrete

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

Cite this

@article{759c2f3c5e4445c992ac5364d8db4b7e,
title = "Effects of the earthquake-induced pounding upon pier motions in the multi-span simply supported steel girder bridge",
abstract = "The earthquake-induced pounding effects on bridge piers are investigated by analyzing dynamic responses of a three-span simply supported steel girder bridge. Using a simplified and idealized analytical model reflecting random characteristics of seismic excitations, maximum pier responses are evaluated. The nonlinear behaviors of reinforced concrete piers and pounding between adjacent bridge decks are included in the analytical model by utilizing a nonlinear hysteresis model and an impact element (a linear viscoelastic model), respectively. From the results of time history analysis, it is found that pounding between adjacent vibration units reduces the pier forces and displacements by restricting the pier motions. As the peak ground acceleration increases, the results of the case without consideration of pounding shows the impractically large pier displacements in the hysteresis model by ignoring restriction of pier motions due to pounding. The results according to the gap distance between impact elements show that the size of gap distance is heavily correlated to the nonlinear pier behaviors. Therefore, the effects of pounding and nonlinear pier behaviors should be considered together to reflect the bridge responses correctly.",
author = "Won, {Jeong Hun} and Mha, {Ho Seong} and Kim, {Sang Hyo}",
year = "2015",
month = "6",
day = "5",
doi = "10.1016/j.engstruct.2015.03.010",
language = "English",
volume = "93",
pages = "1--12",
journal = "Engineering Structures",
issn = "0141-0296",
publisher = "Elsevier BV",

}

Effects of the earthquake-induced pounding upon pier motions in the multi-span simply supported steel girder bridge. / Won, Jeong Hun; Mha, Ho Seong; Kim, Sang Hyo.

In: Engineering Structures, Vol. 93, 05.06.2015, p. 1-12.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of the earthquake-induced pounding upon pier motions in the multi-span simply supported steel girder bridge

AU - Won, Jeong Hun

AU - Mha, Ho Seong

AU - Kim, Sang Hyo

PY - 2015/6/5

Y1 - 2015/6/5

N2 - The earthquake-induced pounding effects on bridge piers are investigated by analyzing dynamic responses of a three-span simply supported steel girder bridge. Using a simplified and idealized analytical model reflecting random characteristics of seismic excitations, maximum pier responses are evaluated. The nonlinear behaviors of reinforced concrete piers and pounding between adjacent bridge decks are included in the analytical model by utilizing a nonlinear hysteresis model and an impact element (a linear viscoelastic model), respectively. From the results of time history analysis, it is found that pounding between adjacent vibration units reduces the pier forces and displacements by restricting the pier motions. As the peak ground acceleration increases, the results of the case without consideration of pounding shows the impractically large pier displacements in the hysteresis model by ignoring restriction of pier motions due to pounding. The results according to the gap distance between impact elements show that the size of gap distance is heavily correlated to the nonlinear pier behaviors. Therefore, the effects of pounding and nonlinear pier behaviors should be considered together to reflect the bridge responses correctly.

AB - The earthquake-induced pounding effects on bridge piers are investigated by analyzing dynamic responses of a three-span simply supported steel girder bridge. Using a simplified and idealized analytical model reflecting random characteristics of seismic excitations, maximum pier responses are evaluated. The nonlinear behaviors of reinforced concrete piers and pounding between adjacent bridge decks are included in the analytical model by utilizing a nonlinear hysteresis model and an impact element (a linear viscoelastic model), respectively. From the results of time history analysis, it is found that pounding between adjacent vibration units reduces the pier forces and displacements by restricting the pier motions. As the peak ground acceleration increases, the results of the case without consideration of pounding shows the impractically large pier displacements in the hysteresis model by ignoring restriction of pier motions due to pounding. The results according to the gap distance between impact elements show that the size of gap distance is heavily correlated to the nonlinear pier behaviors. Therefore, the effects of pounding and nonlinear pier behaviors should be considered together to reflect the bridge responses correctly.

UR - http://www.scopus.com/inward/record.url?scp=84925004821&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84925004821&partnerID=8YFLogxK

U2 - 10.1016/j.engstruct.2015.03.010

DO - 10.1016/j.engstruct.2015.03.010

M3 - Article

AN - SCOPUS:84925004821

VL - 93

SP - 1

EP - 12

JO - Engineering Structures

JF - Engineering Structures

SN - 0141-0296

ER -