Increasing Seismic Safety by Combining Engineering Technologies and Seismological Data / edited by Marco Mucciarelli, Marijan Herak, John Cassidy.

Springer eBooks

The Use of Ambient Noise for Building and Soil Characterisation -- The Need for Standardized Approach for Estimating the Local Site Effects Based on Ambient Noise Recordings -- Are Transients Carrying Useful Information for Estimating H/V Spectral Ratios? -- Basic Structure of QTS (HVSR) and Examples of Applications -- Ambient Noise and Site Response: From Estimation of Site Effects to Determination of the Subsoil Structure -- In-Situ Estimates of Material Damping from Environmental Noise Measurements -- Estimates of Vs30 Based on Constrained H/V Ratio Measurements Alone -- Comparison of Recorded Dynamic Characteristics of Structures and Ground During Strong and Weak Shaking -- HVSR Technique Improvement Using Redundant Wavelet Transform -- Effect of Buildings on Free-Field Ground Motion -- Effect of Building-Building Interaction on “Free-Field” Ground Motion -- Role of Dynamic Properties on Building Vulnerability -- How Far Ambient Noise Measurement May Help to Assess Building Vulnerability? -- Assessment of Seismic Capacity of Existing Buildings – Effects of Uncertainties -- Estimation of the Period of Vibration of Existing RC Building Types Based on Experimental Data and Numerical Results -- Retrofitting and Strengthening Evaluation from Stiffness Variations of a Damaged Building from Ambient Vibration Recordings -- State-of-the-Art – Recent Advances and Applications -- Microtremor Soil-Structure Resonance Study in the Bovec Basin (NW Slovenia) Related to 1998 and 2004 Damaging Earthquakes -- Recent Earthquake Site Response Studies in Canada -- Recent Applications of Ambient Vibration Measurements in Croatia -- Applications to World Heritage Sites -- Two Applications of the HVSR Technique to Cultural Heritage and Historical Masonry -- Overview of Seismic Hazard Studies in Tunis City -- An Empirical Geotechnical Seismic Site Response Procedure.

Too often the Earth’s surface acted as a divide between seismologists and engineers. Now it is becoming clear that the building behaviour largely depends on the seismic input and the buildings on their turn act as seismic sources, in an intricate interplay that non-linear phenomena make even more complex. These phenomena are often the cause of observed damage enhancement during past earthquakes. While research may pursue complex models to fully understand soil dynamics under seismic loading, we need also simple models valid on average, whose results can be easily transferred to end users. Under the title “Increasing Seismic Safety by Combining Engineering Technologies and Seismological Data”, we grouped several topics to be discussed together by engineers and seismologists: (1) Can we use ambient noise building and soil characterisation to extract useful information for engineers? (2) How we can tell apart a frequency decrease due to distributed damage, concentrated damage, time- varying building and soil behaviour? (3) Which is the role of transients in ambient noise analysis? (4) Can we quantify the influence of existing buildings on ground-motion recordings? (5) To which extent soil-building resonance is a cause of damage enhancement? (6) How to couple soil and building non-linear behaviour? On most questions there is an unanimous answer, but in some cases different views are present and the disagreement is faithfully reported.

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