Effects of spatial variability of earthquake ground motion in cable-stayed bridges

2006 ◽  
Vol 23 (3) ◽  
pp. 233-247 ◽  
Author(s):  
Miguel P. Ferreira ◽  
Joao H. Negrao
Keyword(s):  
Spatial Variability ◽  
Ground Motion ◽  
Earthquake Ground Motion ◽  
Cable Stayed Bridges

scholarly journals Effect of spatial variability of ground motion on non-linear dynamic behavior of cable stayed bridges

2018 ◽  
Vol 149 ◽  
pp. 02044
Author(s):  
Mouloud Ouanani ◽  
Boualem Tiliouine ◽  
Malek Hammoutene
Keyword(s):  
Spatial Variability ◽  
Dynamic Behavior ◽  
Ground Motion ◽  
Temporal Variations ◽  
Bridge Piers ◽  
Linear Dynamic ◽  
Cable Stayed Bridge ◽  
Non Linear ◽  
Bridge Responses ◽  
Cable Stayed Bridges

This present paper summarizes the main results of incoherence of Spatial Variability of Ground Motion (SVGM) component on the non-linear dynamic behavior of a Mila cable stayed bridge. The Hindy and Novack coherence model is developed for the present study in order to examine the SVGM on bridge responses, Nonlinear bridge responses are investigated in terms of transverse displacements and bending moments along the superstructure and substructure of the study bridge, as well as temporal variations of rotational ductility demands at the bridge piers ends under the incoherence SVGM component. The results are systematically compared with those obtained assuming uniform ground motion. As a general trend, it may be concluded that incoherence component of SVGM should be considered for the earthquake response assessments of cable-stayed bridges.

Effects of Spatial Variability of Earthquake Ground Motion

2005 ◽  
Vol 90 (13) ◽  
pp. 73-80
Author(s):  
Miguel Ferreira ◽  
João Negrão
Keyword(s):  
Spatial Variability ◽  
Ground Motion ◽  
Earthquake Ground Motion

Ground motion spatial variability and cable-stayed bridges: do we need to consider the asynchronous motion?

2021 ◽  
Author(s):  
Eleftheria Efthymiou ◽  
Alfredo Camara
Keyword(s):  
Spatial Variability ◽  
Seismic Response ◽  
Ground Motion ◽  
Structural Integrity ◽  
Seismic Behaviour ◽  
Long Span ◽  
Seismic Fault ◽  
Differential Movement ◽  
Extensive Program ◽  
Cable Stayed Bridges

<p>Cable-stayed bridges are landmark structures and key parts of transportation networks worldwide. It is of vital importance that their integrity is ensured even under very large earthquakes. The spatial variability of the ground motion could be a significant aspect of the seismic behaviour of long-span cable-stayed bridges due to the differential movement of the pylons, which may lead to an amplified seismic response and increased damage in the pylons. The purpose of this paper is to examine the effect of the spatial variability of the ground motion on the seismic response of cable-stayed bridges with H-shaped pylons and various span lengths. Focus is placed on the pylons of the bridges because the constitute key members for the overall stability and structural integrity of the bridge. The study explores how important the spatial variability is in the seismic response of cable-stayed bridges by considering two different orientations of the structures with respect to the seismic fault in an extensive program of non-linear response-history analyses.</p>

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