000019536 001__ 19536
000019536 005__ 20170118182323.0
000019536 04107 $$aeng
000019536 046__ $$k2017-01-09
000019536 100__ $$aSá¡ez, Esteban
000019536 24500 $$aGeophysical Study and 3D Modeling of Site Effects in the Basin of Marga Marga, Viña Del Mar, Chile

000019536 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019536 260__ $$b
000019536 506__ $$arestricted
000019536 520__ $$2eng$$aThe February 27, 2010 earthquake has induced damage to several buildings in the entire area of central Chile. Particularly in the Marga Marga basin, an anomalous concentration of structural damage was found in the downtown area of Viña del Mar city. Indeed, extensive damage was found in several medium-height buildings distributed along a narrow area of approximately 1 km in length. These observations suggest the existence of localized seismic amplification effects. A geophysical characterization using Surface-Waves based techniques and gravimetry was conducted to characterize the main dynamic properties of the soil and the depth of the basin. These data were complemented with several Standard Penetration Test (SPT) measurements to develop a 3D geotechnical characterization of the area. Based on this geotechnical description, a computational 3D model was developed to estimate possible site amplification effects explaining that concentration of structural damage. Initial results are in good agreement with damage observations and suggest an explanation related to basement shape.

000019536 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019536 653__ $$aSite effects; Numerical modeling; Geophysical survey.

000019536 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019536 720__ $$aSá¡ez, Esteban$$iPodesta, Luis
000019536 8560_ $$ffischerc@itam.cas.cz
000019536 8564_ $$s1600463$$uhttps://invenio.itam.cas.cz/record/19536/files/3853.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3853.
000019536 962__ $$r16048
000019536 980__ $$aPAPER