Evaluation of dynamic response and local soil effects of the Evripos cable-stayed bridge using multi-sensor monitoring systems

The acquisition of response data from large structures and surrounding sites during earthquakes is essential to determine the effect of local soil conditions on seismic ground motion and consequently on the structure's response. This paper studies the local soil effects on the ground motion based on recordings from a permanent accelerometer array installed on the cable-stayed bridge of the Evripos channel in Greece. Furthermore, the dynamic characteristics of the bridge using analytical and experimental methods, which include geodetic monitoring techniques, are investigated in order to provide a more realistic modelling of the bridge. This can result in reliable predictions of the bridge response in future earthquake excitations.

[1]  F. Chávez-García,et al.  Topographic site effects and HVSR. A comparison between observations and theory , 1996, Bulletin of the Seismological Society of America.

[2]  Rock Santerre,et al.  MODIFIED GPS-OTF ALGORITHMS FOR BRIDGE MONITORING: APPLICATION TO THE PIERRE-LAPORTE SUSPENSION BRIDGE IN QUEBEC CITY , 1998 .

[3]  Keiiti Aki,et al.  Local site effects on weak and strong ground motion , 1993 .

[4]  Jamison H. Steidl,et al.  What is a reference site? , 1996, Bulletin of the Seismological Society of America.

[5]  Ahmed Ghobarah,et al.  Engineering perspective for the seismic site response of alluvial valleys , 1997 .

[6]  Ricardo Dobry,et al.  SITE FACTORS AND SITE CATEGORIES IN SEISMIC CODES: A PERSPECTIVE , 1997 .

[7]  L. Xu,et al.  TIME–FREQUENCY ANALYSIS OF A SUSPENSION BRIDGE BASED ON GPS , 2002 .

[8]  Andreas Wieser,et al.  Analysis of Bridge Deformations using Continuous GPS Measurements , 2002 .

[9]  R. Borcherdt.  Effects of local geology on ground motion near San Francisco Bay , 1970 .

[10]  E. Faccioli.  Seismic Amplification in the Presence of Geological and Topographic Irregularities , 1991 .

[11]  Panagiotis Koliopoulos,et al.  Site-dependent amplification functions and response spectra in Greece , 1999 .

[12]  Jonathan D. Bray,et al.  An Empirical Geotechnical Seismic Site Response Procedure , 2001 .

[13]  Christopher Watson,et al.  The Batman Bridge: Structural Monitoring using GPS , 1998 .

[14]  C. Z. Karakostas,et al.  Instrumentation, Measurements and Numerical Analysis of Bridges: An Example of the Cable-Stayed Bridge on Evripos Channel, Greece , 2001 .

[15]  W. J. Hall,et al.  Earthquake spectra and design , 1982 .

[16]  Ahmed Ghobarah,et al.  Site effects on the seismic response of a suspension bridge , 1996 .