Nonlinear dynamic analysis of base isolated cable-stayed bridge under earthquake excitations

Atmaca, Barbaros; Yurdakul, Muhammet; Ateş, Şevket

doi:10.1016/j.soildyn.2014.07.013

Cited by 24 publications

(5 citation statements)

References 17 publications

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“…Atmaca and Ates (2012) evaluated three dimensional finite element model of base isolated and non isolated bridge modeled using SAP2000 to know dynamic response of bridge. Atmaca et al (2014) carried out non-linear dynamic analysis of base isolated cable stayed bridge under earthquake motions. They concluded that the isolation devices placed under pylon and abutment as compared to isolation device placed under the deck of bridge are more effective when the bridges are under earthquake ground motions.…”

Section: Literature Surveymentioning

confidence: 99%

Effect of Multi-Support Excitation on Seismic Behavior of TFPS-Isolated Cable Stayed Bridge

2017

IJAERD

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Section: Literature Surveymentioning

confidence: 99%

Effect of Multi-Support Excitation on Seismic Behavior of TFPS-Isolated Cable Stayed Bridge

2017

IJAERD

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“…To reduce these amplitudes different external damping systems are used but the economy is still needed to be investigated [8]. With increasing lengths of the main span, the effects of wind and other dynamic forces increases [9].Seismic response studies of the cable stayed bridges are the focus of the researchers since the 1980's [10][11][12][13]. In this paper, the dynamic response of a single tower cable stayed bridge is studied.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response Study of a Single Tower Cable Stayed Bridge using Finite Element Method

Habib

Muhammad²,

Mandokhail

et al. 2020

Journal of Applied and Emerging Sciences

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Cable stayed bridges are most widely used in the modern medium to long bridge construction due to their efficient response, economic viability, faster construction, and eye-catching aesthetics. The dynamic response of a single tower cable stayed bridge is studied by performing both nonlinear static and dynamic analyses using finite element method based software ANSYS. A three dimensional bridge model was developed using ANSYS. The steel cables were simulated using a single element approach to minimize the time and data use. Due to the complexity of cable stayed bridges, it is tried to avoid the convergence problems by adopting the displacement convergence approach. The bridge exhibits complex modal shapes due to the coupling effects for the free vibrations. The response of the bridge in vertical direction is more elastic and flexible as compared to the longitudinal and transverse direction. Response of the critical sections of girder, tower, and cables was also studied by time-history analysis using the ground acceleration data of the EI-Centro 1940 earthquake. A 10 second ground data with 0.0001 second time step was used. It was observed that stiffness in the vertical direction is a key player in the dynamic behavior of the cable stayed bridge. The response of the right and left span is similar which adds to the accuracy of the analysis. Time history analysis of the bridge shows that the largest displacements or peak responses are not related to the peak ground accelerations, rather they are dependent on many other factors like bridge stiffness, nature of the earthquake ground excitations and mass distribution. However, the results show the general trend of cable stayed bridges.

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“…The control strategy overcame the effect of the uncertainties involved in the retrofitting strategies. Nevertheless, there is a lack of research on the seismic behavior of isolated cable-stayed bridges with distinctive features, such as a difference in the elevation of the abutments and irregularity of the geometry [ 24 , 25 , 35 ][ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Seismic isolation retrofitting solution for an existing steel cable-stayed bridge

et al. 2018

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This paper investigated the seismic retrofitting of an existing cable-stayed bridge through the use of a seismic isolation system. The bridge is situated in a high seismic zone. During the Saguenay earthquake 1988, one of the anchorage plates of the bridge supports failed. Herein, several configurations of seismic isolation system were considered to identify an appropriate solution for the seismic retrofitting of the bridge in both the longitudinal and transverse directions. A three-dimensional model of the bridge was created, and its seismic behavior studied through nonlinear dynamic time-history analysis. The comparative performance study among the five retrofitting configurations showed that the partial seismic isolation of the bridge led to an enhancement of the seismic response of the bridge in one direction only. However, the overall seismic response of the cable-stayed bridge substantially improved in the longitudinal and transverse directions in cases where the isolation systems were utilized between the supports and the deck-tower connection of the bridge.

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Nonlinear dynamic analysis of base isolated cable-stayed bridge under earthquake excitations

Cited by 24 publications

References 17 publications

Effect of Multi-Support Excitation on Seismic Behavior of TFPS-Isolated Cable Stayed Bridge

Effect of Multi-Support Excitation on Seismic Behavior of TFPS-Isolated Cable Stayed Bridge

Dynamic Response Study of a Single Tower Cable Stayed Bridge using Finite Element Method

Seismic isolation retrofitting solution for an existing steel cable-stayed bridge

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