A5056436753- Seismic Waves and Analysis
- Seismic Imaging and Inversion Techniques
- Geophysical Methods and Applications
- Seismic Performance and Analysis
- Geophysics and Sensor Technology
- Geotechnical Engineering and Underground Structures
- Structural Health Monitoring Techniques
- Geophysical and Geoelectrical Methods
- Ultrasonics and Acoustic Wave Propagation
- Seismology and Earthquake Studies
- Geotechnical Engineering and Soil Mechanics
- Landslides and related hazards
- Drilling and Well Engineering
- Masonry and Concrete Structural Analysis
- Structural Engineering and Vibration Analysis
- Dam Engineering and Safety
- Geotechnical Engineering and Soil Stabilization
- Soil and Unsaturated Flow
- 3D Surveying and Cultural Heritage
- Electrical and Bioimpedance Tomography
- Structural Analysis and Optimization
- Advanced Fiber Optic Sensors
- Earthquake Detection and Analysis
- Geotechnical and Geomechanical Engineering
- earthquake and tectonic studies
Polytechnic University of Turin
2016-2025
Turin Polytechnic University
2014
Politecnico di Milano
2012
Shell (Netherlands)
2010
Lund University
2009
Istituto Nazionale di Geofisica e Vulcanologia
2009
Ramboll (Denmark)
2009
Georgia Institute of Technology
2005
The University of Western Australia
2002-2003
Today, surface-wave analysis is widely adopted for building near-surface S-wave velocity models. The method under continuous and rapid evolution, also thanks to the lively scientific debate among different disciplines, interest in technique has increased significantly during last decade. A comprehensive review of literature main journals provides historical perspective, methodological issues, applications, most-promising recent approaches. Higher modes inversion retrieval lateral variations...
Surface wave methods gained in the past decades a primary role many seismic projects. Specifically, they are often used to retrieve 1D shear velocity model or estimate VS,30 at site. The complexity of interpretation process and variety possible approaches surface analysis make it very hard set fixed standard assure quality reliability results. present guidelines provide practical information on acquisition data by giving some basic principles specific suggestions related most common...
Higher-mode contribution is important in surface-wave inversion because it allows more information to be exploited, increases investigation depth, and improves model resolution. A new misfit function for multimodal of surface waves, based on the Haskell-Thomson matrix method, higher modes taken into account without need associate experimental data points a specific mode, thus avoiding mode-misidentification errors retrieved velocity profiles. Computing cost reduced by calculating synthetic...
Foundation scour is a major issue affecting the structural safety of existing bridges, hence its monitoring paramount importance. This paper reports case history assessment and with dynamic tests for bridge affected by scouring subjected to retrofitting. Two different approaches measuring traffic-induced vibrations are applied as potential tools foundation scour. The modal identification spans one approach, observation response pier foundations other approach. A finite-element model used...
PREdiction of NOn-LINear soil behavior (PRENOLIN) is an international benchmark aiming to test multiple numerical simulation codes that are capable predicting nonlinear seismic site response with various constitutive models.One the objectives this project assessment uncertainties associated 1D effects.A first verification phase (i.e., comparison between on simple idealistic cases) will be followed by a validation phase, comparing predictions such estimations actual strongmotion recordings...
The Central Italy earthquake sequence initiated on 24 August 2016 with a moment magnitude M6.1 event, followed by two earthquakes (M5.9 and M6.5) 26 30 October, caused significant damage loss of life in the town Amatrice other nearby villages hamlets. significance this led to major international reconnaissance effort thoroughly examine effects disaster. Specifically, paper presents evidences strong local site (i.e., amplification seismic waves because stratigraphic topographic that leads...
This article presents the main results of validation phase PRENOLIN project.PRENOLIN is an international benchmark on 1D nonlinear (NL) site-response analysis.This project involved 19 teams with 23 different codes tested.It was divided into two phases; first verifying numerical solution these idealized soil profiles using simple signals and real seismic records.The second described in this referred to code for analysis instrumented sites.This performed sites (KSRH10 Sendai) Japanese...
Abstract In this paper the site categorization criteria and corresponding amplification factors proposed in 2021 draft of Part 1 Eurocode 8 (2021-draft, CEN/TC250/SC8 Working Draft N1017) are first introduced compared with current version 8, as well from recent empirical ground motion prediction equations. Afterwards, these values checked by two approaches. First, a wide dataset strong records is built, where recording stations classified according to 2021-draft, spectral amplifications...
The analysis of surface wave propagation is often used to estimate the S-wave velocity profile at a site. In this paper, we propose stochastic approach for inversion waves, which allows apparent dispersion curves be inverted. method based on integrated use two-misfit functions. A misfit function determinant Haskell–Thomson matrix and classical Euclidean distance between curves. former all modes curve taken into account with very limited computational cost because it avoids explicit...
Seismic reflection data contain surface waves that can be processed and interpreted to supply shear-wave velocity models along seismic lines. The coverage of allows the use automated multifold processing extract high-quality dispersion curves experimental uncertainties in a moving spatial window. are then inverted using deterministic, laterally constrained inversion obtain pseudo-2D model velocity. A Monte Carlo global search algorithm optimizes parameterization. When strategy is used with...
Although in recent years surface wave methods have undergone significant development that has greatly enhanced their capabilities, little effort been spent to determine the uncertainty associated with measurements. The objective of this study is how experimental data mapped into shear velocity profile via inversion algorithm. methodology developed for estimating from measurements based on assumption are normally distributed. validity hypothesis was experimentally verified using gathered at...
The reliability of surface-wave tests for the evaluation VS,30 in seismic site characterization is assessed with respect to both uncertainty and accuracy. discussion mainly focused on implications solution nonuniqueness inverse problems; only inversion considered within this work, omitting other possible issues such as nontrivial geological settings (e.g., lateral variations) or influence different processing procedures. A Monte Carlo approach has been used select, through a statistical...
The Central Italy earthquake sequence nominally began on 24 August 2016 with a M6.1 event normal fault that produced devastating effects in the town of Amatrice and several nearby villages hamlets. A major international response was undertaken to record this disaster, including surface faulting, ground motions, landslides, damage patterns structures. This work targeted development high-value case histories useful future research. Subsequent events October exacerbated previously affected...
SUMMARY A robust, in situ estimate of shear-wave velocity VS and the small-strain damping ratio DS (or equivalently, quality factor QS) is crucial for design buildings geotechnical systems subjected to vibrations or earthquake ground shaking. promising technique simultaneously obtaining both relies on Multichannel Analysis Surface Waves (MASW) method. MASW can be used extract Rayleigh wave phase attenuation data from active-source seismic traces recorded along linear arrays. Then, these...