Quasi-static responses estimation of a cable-stayed bridge from displacement data at a limited number of points

Junho Choi, Keesei Lee, Young Jong Kang

Research output: Contribution to journalArticle

Abstract

Cable-stayed bridges are one kind of long-span bridges and are widely used. The girder of a cable-stayed bridge is slender and connected to the pylon with a cable. The girder of the cable-stayed bridge is subjected to a significant compressive force compared to other bridge types because of cable tension. The compression force can cause buckling failure of the girder. When a cable or girder fails, the equilibrium condition of the entire bridge is changed. For these reasons, it is important to monitor the structure condition to proactively detect bridge defects. In many cases, the acceleration or displacement of the structure is used to detect the defects. If as much displacement information as the degrees of freedom can be obtained, it is possible to estimate the condition of each of the members of the structure. However, as only a limited number of displacements can be acquired, SRALD 1.0 was proposed in order to overcome such limitations. In this research, SRALD 1.0 is used to analyze the responses of a cable-stayed bridge using a limited number of displacements. Limited numbers of displacement responses are used to estimate deformed shapes of the structure. In addition, the cable tension, axial force, and bending moment of the girder are estimated to analyze the characteristics of SRALD 1.0. Finally, the application of SRALD 1.0 was validated by comparing its algorithm with spline interpolation method, which is widely used to show the deformed shape of the structure.

Original languageEnglish
Pages (from-to)789-800
Number of pages12
JournalInternational Journal of Steel Structures
Volume17
Issue number2
DOIs
Publication statusPublished - 2017 Jun 1

Fingerprint

Cable stayed bridges
Cables
Defects
Bending moments
Splines
Buckling
Interpolation

Keywords

  • cable-stayed bridge
  • displacement
  • internal force
  • SRALD 1.0
  • structural health monitoring (SHM)

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Quasi-static responses estimation of a cable-stayed bridge from displacement data at a limited number of points. / Choi, Junho; Lee, Keesei; Kang, Young Jong.

In: International Journal of Steel Structures, Vol. 17, No. 2, 01.06.2017, p. 789-800.

Research output: Contribution to journalArticle

@article{58d773450b0c4943af329cd13609a373,
title = "Quasi-static responses estimation of a cable-stayed bridge from displacement data at a limited number of points",
abstract = "Cable-stayed bridges are one kind of long-span bridges and are widely used. The girder of a cable-stayed bridge is slender and connected to the pylon with a cable. The girder of the cable-stayed bridge is subjected to a significant compressive force compared to other bridge types because of cable tension. The compression force can cause buckling failure of the girder. When a cable or girder fails, the equilibrium condition of the entire bridge is changed. For these reasons, it is important to monitor the structure condition to proactively detect bridge defects. In many cases, the acceleration or displacement of the structure is used to detect the defects. If as much displacement information as the degrees of freedom can be obtained, it is possible to estimate the condition of each of the members of the structure. However, as only a limited number of displacements can be acquired, SRALD 1.0 was proposed in order to overcome such limitations. In this research, SRALD 1.0 is used to analyze the responses of a cable-stayed bridge using a limited number of displacements. Limited numbers of displacement responses are used to estimate deformed shapes of the structure. In addition, the cable tension, axial force, and bending moment of the girder are estimated to analyze the characteristics of SRALD 1.0. Finally, the application of SRALD 1.0 was validated by comparing its algorithm with spline interpolation method, which is widely used to show the deformed shape of the structure.",
keywords = "cable-stayed bridge, displacement, internal force, SRALD 1.0, structural health monitoring (SHM)",
author = "Junho Choi and Keesei Lee and Kang, {Young Jong}",
year = "2017",
month = "6",
day = "1",
doi = "10.1007/s13296-017-6032-6",
language = "English",
volume = "17",
pages = "789--800",
journal = "International Journal of Steel Structures",
issn = "1598-2351",
publisher = "Korean Society of Steel Construction",
number = "2",

}

TY - JOUR

T1 - Quasi-static responses estimation of a cable-stayed bridge from displacement data at a limited number of points

AU - Choi, Junho

AU - Lee, Keesei

AU - Kang, Young Jong

PY - 2017/6/1

Y1 - 2017/6/1

N2 - Cable-stayed bridges are one kind of long-span bridges and are widely used. The girder of a cable-stayed bridge is slender and connected to the pylon with a cable. The girder of the cable-stayed bridge is subjected to a significant compressive force compared to other bridge types because of cable tension. The compression force can cause buckling failure of the girder. When a cable or girder fails, the equilibrium condition of the entire bridge is changed. For these reasons, it is important to monitor the structure condition to proactively detect bridge defects. In many cases, the acceleration or displacement of the structure is used to detect the defects. If as much displacement information as the degrees of freedom can be obtained, it is possible to estimate the condition of each of the members of the structure. However, as only a limited number of displacements can be acquired, SRALD 1.0 was proposed in order to overcome such limitations. In this research, SRALD 1.0 is used to analyze the responses of a cable-stayed bridge using a limited number of displacements. Limited numbers of displacement responses are used to estimate deformed shapes of the structure. In addition, the cable tension, axial force, and bending moment of the girder are estimated to analyze the characteristics of SRALD 1.0. Finally, the application of SRALD 1.0 was validated by comparing its algorithm with spline interpolation method, which is widely used to show the deformed shape of the structure.

AB - Cable-stayed bridges are one kind of long-span bridges and are widely used. The girder of a cable-stayed bridge is slender and connected to the pylon with a cable. The girder of the cable-stayed bridge is subjected to a significant compressive force compared to other bridge types because of cable tension. The compression force can cause buckling failure of the girder. When a cable or girder fails, the equilibrium condition of the entire bridge is changed. For these reasons, it is important to monitor the structure condition to proactively detect bridge defects. In many cases, the acceleration or displacement of the structure is used to detect the defects. If as much displacement information as the degrees of freedom can be obtained, it is possible to estimate the condition of each of the members of the structure. However, as only a limited number of displacements can be acquired, SRALD 1.0 was proposed in order to overcome such limitations. In this research, SRALD 1.0 is used to analyze the responses of a cable-stayed bridge using a limited number of displacements. Limited numbers of displacement responses are used to estimate deformed shapes of the structure. In addition, the cable tension, axial force, and bending moment of the girder are estimated to analyze the characteristics of SRALD 1.0. Finally, the application of SRALD 1.0 was validated by comparing its algorithm with spline interpolation method, which is widely used to show the deformed shape of the structure.

KW - cable-stayed bridge

KW - displacement

KW - internal force

KW - SRALD 1.0

KW - structural health monitoring (SHM)

UR - http://www.scopus.com/inward/record.url?scp=85021297828&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85021297828&partnerID=8YFLogxK

U2 - 10.1007/s13296-017-6032-6

DO - 10.1007/s13296-017-6032-6

M3 - Article

AN - SCOPUS:85021297828

VL - 17

SP - 789

EP - 800

JO - International Journal of Steel Structures

JF - International Journal of Steel Structures

SN - 1598-2351

IS - 2

ER -