Cable-stayed bridges subjected to near-fault vertical motion

M. Kuleli, Amr S. Elnashai

Research output: Contribution to conferencePaper

Abstract

The existence of a horizontal large velocity pulse that contains a substantial proportion of the seismic energy, often referred to as a 'fling', tends to increase seismic demand on medium-to-long period structures. Vertical ground motion is most intense and damaging in near-fault region, which openings the possibility that vertical motion may also include strong velocity pulses. An investigation of possible 'fling' features in vertical ground motion and their effects on cable-stayed bridge structures is presented in this paper. It is endeavored to identify and explain the reasons for strong velocity pulses in vertical ground motion. A set of earthquake records from recent large thrust events, which provided abundant near-fault vertical ground motion records, was selected and analyzed to identify large velocity pulses. Comparison is made with a set of normal acceleration records. Detailed numerical models of a class of cable-stayed bridges were developed, based on an existing bridge structure. The strong-motion ensemble is used for dynamic geometrically-nonlinear response history analysis of the cable-stayed bridges. Global and local response parameters were monitored and compared. The results indicate that pulse-like vertical ground motion increases moment and rotation demands along the bridge deck and should therefore be considered in seismic design and assessment.

Original languageEnglish (US)
Pages1941-1957
Number of pages17
StatePublished - Jan 1 2013
Event4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013 - Kos Island, Greece
Duration: Jun 12 2013Jun 14 2013

Other

Other4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013
CountryGreece
CityKos Island
Period6/12/136/14/13

Fingerprint

Cable stayed bridges
Bridge decks
Seismic design
Numerical models
Earthquakes

All Science Journal Classification (ASJC) codes

  • Computational Theory and Mathematics
  • Civil and Structural Engineering

Cite this

Kuleli, M., & Elnashai, A. S. (2013). Cable-stayed bridges subjected to near-fault vertical motion. 1941-1957. Paper presented at 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013, Kos Island, Greece.
Kuleli, M. ; Elnashai, Amr S. / Cable-stayed bridges subjected to near-fault vertical motion. Paper presented at 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013, Kos Island, Greece.17 p.
@conference{c7555fd32935457893cf0fa467ae5760,
title = "Cable-stayed bridges subjected to near-fault vertical motion",
abstract = "The existence of a horizontal large velocity pulse that contains a substantial proportion of the seismic energy, often referred to as a 'fling', tends to increase seismic demand on medium-to-long period structures. Vertical ground motion is most intense and damaging in near-fault region, which openings the possibility that vertical motion may also include strong velocity pulses. An investigation of possible 'fling' features in vertical ground motion and their effects on cable-stayed bridge structures is presented in this paper. It is endeavored to identify and explain the reasons for strong velocity pulses in vertical ground motion. A set of earthquake records from recent large thrust events, which provided abundant near-fault vertical ground motion records, was selected and analyzed to identify large velocity pulses. Comparison is made with a set of normal acceleration records. Detailed numerical models of a class of cable-stayed bridges were developed, based on an existing bridge structure. The strong-motion ensemble is used for dynamic geometrically-nonlinear response history analysis of the cable-stayed bridges. Global and local response parameters were monitored and compared. The results indicate that pulse-like vertical ground motion increases moment and rotation demands along the bridge deck and should therefore be considered in seismic design and assessment.",
author = "M. Kuleli and Elnashai, {Amr S.}",
year = "2013",
month = "1",
day = "1",
language = "English (US)",
pages = "1941--1957",
note = "4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013 ; Conference date: 12-06-2013 Through 14-06-2013",

}

Kuleli, M & Elnashai, AS 2013, 'Cable-stayed bridges subjected to near-fault vertical motion' Paper presented at 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013, Kos Island, Greece, 6/12/13 - 6/14/13, pp. 1941-1957.

Cable-stayed bridges subjected to near-fault vertical motion. / Kuleli, M.; Elnashai, Amr S.

2013. 1941-1957 Paper presented at 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013, Kos Island, Greece.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Cable-stayed bridges subjected to near-fault vertical motion

AU - Kuleli, M.

AU - Elnashai, Amr S.

PY - 2013/1/1

Y1 - 2013/1/1

N2 - The existence of a horizontal large velocity pulse that contains a substantial proportion of the seismic energy, often referred to as a 'fling', tends to increase seismic demand on medium-to-long period structures. Vertical ground motion is most intense and damaging in near-fault region, which openings the possibility that vertical motion may also include strong velocity pulses. An investigation of possible 'fling' features in vertical ground motion and their effects on cable-stayed bridge structures is presented in this paper. It is endeavored to identify and explain the reasons for strong velocity pulses in vertical ground motion. A set of earthquake records from recent large thrust events, which provided abundant near-fault vertical ground motion records, was selected and analyzed to identify large velocity pulses. Comparison is made with a set of normal acceleration records. Detailed numerical models of a class of cable-stayed bridges were developed, based on an existing bridge structure. The strong-motion ensemble is used for dynamic geometrically-nonlinear response history analysis of the cable-stayed bridges. Global and local response parameters were monitored and compared. The results indicate that pulse-like vertical ground motion increases moment and rotation demands along the bridge deck and should therefore be considered in seismic design and assessment.

AB - The existence of a horizontal large velocity pulse that contains a substantial proportion of the seismic energy, often referred to as a 'fling', tends to increase seismic demand on medium-to-long period structures. Vertical ground motion is most intense and damaging in near-fault region, which openings the possibility that vertical motion may also include strong velocity pulses. An investigation of possible 'fling' features in vertical ground motion and their effects on cable-stayed bridge structures is presented in this paper. It is endeavored to identify and explain the reasons for strong velocity pulses in vertical ground motion. A set of earthquake records from recent large thrust events, which provided abundant near-fault vertical ground motion records, was selected and analyzed to identify large velocity pulses. Comparison is made with a set of normal acceleration records. Detailed numerical models of a class of cable-stayed bridges were developed, based on an existing bridge structure. The strong-motion ensemble is used for dynamic geometrically-nonlinear response history analysis of the cable-stayed bridges. Global and local response parameters were monitored and compared. The results indicate that pulse-like vertical ground motion increases moment and rotation demands along the bridge deck and should therefore be considered in seismic design and assessment.

UR - http://www.scopus.com/inward/record.url?scp=84899003445&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899003445&partnerID=8YFLogxK

M3 - Paper

SP - 1941

EP - 1957

ER -

Kuleli M, Elnashai AS. Cable-stayed bridges subjected to near-fault vertical motion. 2013. Paper presented at 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013, Kos Island, Greece.