Effectiveness of Soil–Structure Interaction and Dynamic Characteristics on Cable-Stayed Bridges Subjected to Multiple Support Excitation

The purpose of the study is to determine the effects of multiple support excitations (MSE) and soil–structure interaction (SSI) on the dynamic characteristics of cable-stayed bridges founded on pile foundation groups. In the design of these structures, it is important to consider the effects of spat...

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Bibliographic Details
Published in:International journal of steel structures 2018-06, Vol.18 (2), p.554-568
Main Authors: Ateş, Şevket, Tonyali, Zeliha, Soyluk, Kurtuluş, Samberou, Adamou Marou Seyni
Format: Article
Language:English
Subjects:
Bridge foundations
Cable-stayed bridges
Civil Engineering
Dynamic characteristics
Engineering
Ground motion
Incoherence
Materials Science
Mathematical models
Pile foundations
Soil dynamics
Soil-structure interaction
Solid Mechanics
Three dimensional models
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Summary:The purpose of the study is to determine the effects of multiple support excitations (MSE) and soil–structure interaction (SSI) on the dynamic characteristics of cable-stayed bridges founded on pile foundation groups. In the design of these structures, it is important to consider the effects of spatial variability of earthquake ground motions. To do this, the time histories of the ground motions are generated based on the spatially varying ground motion components of incoherence, wave-passage, and site-response. The effects of SSI on the response of a bridge subjected to the MSE are numerically illustrated using a three-dimensional model of Quincy Bayview cable-stayed bridge in the USA. The soil around the pile is linearly elastic, homogeneous isotropic half space represented by dynamic impedance functions based on the Winkler model of soil reaction. Structural responses obtained from the dynamic analysis of the bridge system show the importance of the SSI and the MSE effects on the dynamic responses of cable-stayed bridges.
ISSN:1598-2351
2093-6311
DOI:10.1007/s13296-018-0069-z