Proceedings of the NATO Advanced Research Workshop on Coupled Site and Soil-Structure Interaction Effects with Application to Seismic Risk MitigationBorovets, Bulgaria30 August - 3 September 2008

Interdisciplinary approach including scientists from structural dynamics, geophysics seismological engineering

Site Conditions and Their Role in Seismic Hazard Analyses.- The Nature of Site Response During Earthquakes.- Earthquake Source and Local Geology Effects on the Seismic Site Response.- Wave Propagation in the Anisotropic Inhomogeneous Half-Plane.- Hybrid Simulation of Seismic Wave Propagation in Laterally Inhomogeneous Media.- On The Influence of Saturation and Frequency on Monochromatic Plane Waves in Unsaturated Soils.- Local Site Effects and Seismic Response of Bridges.- Local Site Effect Evaluation in Seismic Risk Mitigation.- Seismic Site Effect Modelling Based on In Situ Borehole Measurements in Bucharest, Romania.- Soil-Structure Interaction.- Issues Related to the Dynamic Interaction of Retaining Walls and Retained Soil Layer.- The Effect of Soil-Structure Interaction And Site Effects on Dynamic Response and Stability of Earth Structures.- Cyclic and dynamic mechanical behaviour of shallow foundations on granular deposits.- Soil-Structure Interaction in Nonlinear Soil.- Separation of the Effects of Soil-Structure Interaction in Frequency Estimation of Buildings From Earthquake Records.- Analysis of Seismic Interactions Soil-Foundation-Bridge Structures for Different Foundations.- The Role of Site Effects and of Soil Structure Interaction in Design of Structures.- Seismic assessment of bridges accounting for nonlinear material and soil response, and varying boundary conditions.- Structural Response to Complex Synthetic Ground Motions.- Single and multi-platform simulation of linear and non-linear bridge-soil systems.- Design Seismic Response Evaluation of Wall Systems Including Foundation Flexibility.- Design seismic performance of R/C framestructures taking into account foundation flexibility.- Effect of Depth of Ground Water on the Seismic Response of FrameType Buildings on Sand Deposits. Part I: Soil Response.- General and Related Subjects.- Extracting the Time-Domain Building Response From Random Vibrations.- Recent Measurements of Ambient Vibrations in Free-Field and in Buildings in Croatia.- Analysis of Dynamic Impact on A Ground Slope During Destruction of an Emergency House.

The purpose of NATO ARW 983188 Coupled Site and Soil-Structure Int- action E?ects with Application to Seismic Risk Mitigation, held in Borovets, Bulgaria, 30 August 3 September 2008, was to present state-of-the-art, - site, soil-structure interaction e?ects (SSSI), as manifested in the broader area ofsouthandsouth-easternEurope,whichisthemostseismicallyproneregion of the European continent. Another objective was to attempt to de?ne the seismic risk posed to the built environment in this area and to present modern methods for seismic risk mitigation. The ARW was very successful and generated an interdisciplinary-type information exchange between the three main groups of participants: g- physicists, geotechnical engineers, and structural engineers. The presen- tions during the workshop can be grouped into four subject areas: (1) site conditions and their role in seismic hazard analyses, (2) soil-structure int- action, (3) the role of site e?ects and of soil-structure interaction in the design of structures, and (4) general and related subjects. The following ?elds were addressed during the presentations and the discussions: strong ground motion (near-?eld e?ects, seismic-wave propagation, free-?eld motion); geotech- calengineering(slopes,foundations,lifelines,dams,andretainingwalls);and structural engineering (buildings, bridges, ?eld measurements, and protective systems). The work presented in this volume includes contributions from engineers and scientists, mainly from south-eastern Europe and the neighbouring - gions of the Near East. The arrangement of contributions in di?erent chapters is not rigorous, and many papers present similar material, which includes broad coverage and di?erent disciplines, since earthquake engineering is by its nature an interdisciplinary subject.