Effects of the restrainer upon bridge motions under seismic excitations

Jeong Hun Won, Ho Seong Mha, Kwang Il Cho, Sang Hyo Kim

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Dynamic responses of a multi-span simply supported bridge retrofitted with cable restrainers between longitudinally adjacent girders are examined under seismic excitations. A simplified and idealized mechanical model is adopted and the corresponding analysis tools are developed to examine the effects of restrainers, in which the nonlinear behavior as well as the fracture of the cable are considered. Using the proposed model, the effects of the cable length, the stand-by clearance length, and the stiffness of the restrainer upon the global seismic behaviors are verified. The variations of the pounding forces between adjacent girders are evaluated to see the overall effect of the application of restrainers, and the corresponding shear forces and bending moments on each pier are investigated. The main effect of restrainers upon global bridge motions is found to constrain and redistribute the relative distances between adjacent vibrations units. It is also found that the cable length, clearance length, as well as cable section area should be selected properly depending on the level of seismic intensity.

Original languageEnglish
Pages (from-to)3532-3544
Number of pages13
JournalEngineering Structures
Volume30
Issue number12
DOIs
Publication statusPublished - 2008 Dec 1

Fingerprint

Cables
Beams and girders
Piers
Bending moments
Dynamic response
Stiffness

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

Cite this

Won, Jeong Hun ; Mha, Ho Seong ; Cho, Kwang Il ; Kim, Sang Hyo. / Effects of the restrainer upon bridge motions under seismic excitations. In: Engineering Structures. 2008 ; Vol. 30, No. 12. pp. 3532-3544.
@article{5a9c8a72afd041779f4273da43e19c91,
title = "Effects of the restrainer upon bridge motions under seismic excitations",
abstract = "Dynamic responses of a multi-span simply supported bridge retrofitted with cable restrainers between longitudinally adjacent girders are examined under seismic excitations. A simplified and idealized mechanical model is adopted and the corresponding analysis tools are developed to examine the effects of restrainers, in which the nonlinear behavior as well as the fracture of the cable are considered. Using the proposed model, the effects of the cable length, the stand-by clearance length, and the stiffness of the restrainer upon the global seismic behaviors are verified. The variations of the pounding forces between adjacent girders are evaluated to see the overall effect of the application of restrainers, and the corresponding shear forces and bending moments on each pier are investigated. The main effect of restrainers upon global bridge motions is found to constrain and redistribute the relative distances between adjacent vibrations units. It is also found that the cable length, clearance length, as well as cable section area should be selected properly depending on the level of seismic intensity.",
author = "Won, {Jeong Hun} and Mha, {Ho Seong} and Cho, {Kwang Il} and Kim, {Sang Hyo}",
year = "2008",
month = "12",
day = "1",
doi = "10.1016/j.engstruct.2008.05.021",
language = "English",
volume = "30",
pages = "3532--3544",
journal = "Engineering Structures",
issn = "0141-0296",
publisher = "Elsevier BV",
number = "12",

}

Effects of the restrainer upon bridge motions under seismic excitations. / Won, Jeong Hun; Mha, Ho Seong; Cho, Kwang Il; Kim, Sang Hyo.

In: Engineering Structures, Vol. 30, No. 12, 01.12.2008, p. 3532-3544.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of the restrainer upon bridge motions under seismic excitations

AU - Won, Jeong Hun

AU - Mha, Ho Seong

AU - Cho, Kwang Il

AU - Kim, Sang Hyo

PY - 2008/12/1

Y1 - 2008/12/1

N2 - Dynamic responses of a multi-span simply supported bridge retrofitted with cable restrainers between longitudinally adjacent girders are examined under seismic excitations. A simplified and idealized mechanical model is adopted and the corresponding analysis tools are developed to examine the effects of restrainers, in which the nonlinear behavior as well as the fracture of the cable are considered. Using the proposed model, the effects of the cable length, the stand-by clearance length, and the stiffness of the restrainer upon the global seismic behaviors are verified. The variations of the pounding forces between adjacent girders are evaluated to see the overall effect of the application of restrainers, and the corresponding shear forces and bending moments on each pier are investigated. The main effect of restrainers upon global bridge motions is found to constrain and redistribute the relative distances between adjacent vibrations units. It is also found that the cable length, clearance length, as well as cable section area should be selected properly depending on the level of seismic intensity.

AB - Dynamic responses of a multi-span simply supported bridge retrofitted with cable restrainers between longitudinally adjacent girders are examined under seismic excitations. A simplified and idealized mechanical model is adopted and the corresponding analysis tools are developed to examine the effects of restrainers, in which the nonlinear behavior as well as the fracture of the cable are considered. Using the proposed model, the effects of the cable length, the stand-by clearance length, and the stiffness of the restrainer upon the global seismic behaviors are verified. The variations of the pounding forces between adjacent girders are evaluated to see the overall effect of the application of restrainers, and the corresponding shear forces and bending moments on each pier are investigated. The main effect of restrainers upon global bridge motions is found to constrain and redistribute the relative distances between adjacent vibrations units. It is also found that the cable length, clearance length, as well as cable section area should be selected properly depending on the level of seismic intensity.

UR - http://www.scopus.com/inward/record.url?scp=55949103191&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=55949103191&partnerID=8YFLogxK

U2 - 10.1016/j.engstruct.2008.05.021

DO - 10.1016/j.engstruct.2008.05.021

M3 - Article

AN - SCOPUS:55949103191

VL - 30

SP - 3532

EP - 3544

JO - Engineering Structures

JF - Engineering Structures

SN - 0141-0296

IS - 12

ER -