ABSTRACT: The application, described in a companion paper (PART I) of the CPT- based procedure proposed by Robertson e Wride and suggested by Youd et al., showed the opportunity of further analyses to confirm the possibility of liquefaction in the alluvial soil of Nocera Scalo during the design earthquake. Thus, also in consideration of the significant site effects registered during the aftershocks of the seismic sequence in 1997, an upper level approach for more accurate liquefaction hazard evaluation, inclusive of seismic response analysis and non linearity effects due to cyclic loading and water pore pressure generation, accumulation and dissipation, was performed. As the site topography is nearly flat, and the properties of alluvial fillings are relatively uniform, one-dimensional stress- strain models (1D) were considered suitable for calculating seismic response in the central zone of the valley where the hamlet is located and where previous analyses showed the highest soil liquefaction risk. Since the area is too large for an accurate definition of dynamic soil properties with the available budget, two sites, re¬presentative of the alluvial filling conditions in the deposit, were chosen to enhance knowledge of liquefaction hazard. This paper illustrates the results of the dynamic testing investigations and of total and effective stress-strain numerical analyses carried out. The findings are also compared with those obtained by applying the simplified procedures presented in the companion paper (PART I).

Liquefaction hazard during earthquakes at Nocera Scalo, Italy. Part II: Total and effective stress analyses for liquefaction potential assessment / T. CRESPELLANI; C. MADIAI. - In: RIVISTA ITALIANA DI GEOTECNICA. - ISSN 0557-1405. - STAMPA. - 4:(2002), pp. 48-67.

Liquefaction hazard during earthquakes at Nocera Scalo, Italy. Part II: Total and effective stress analyses for liquefaction potential assessment

CRESPELLANI, TERESA;MADIAI, CLAUDIA
2002

Abstract

ABSTRACT: The application, described in a companion paper (PART I) of the CPT- based procedure proposed by Robertson e Wride and suggested by Youd et al., showed the opportunity of further analyses to confirm the possibility of liquefaction in the alluvial soil of Nocera Scalo during the design earthquake. Thus, also in consideration of the significant site effects registered during the aftershocks of the seismic sequence in 1997, an upper level approach for more accurate liquefaction hazard evaluation, inclusive of seismic response analysis and non linearity effects due to cyclic loading and water pore pressure generation, accumulation and dissipation, was performed. As the site topography is nearly flat, and the properties of alluvial fillings are relatively uniform, one-dimensional stress- strain models (1D) were considered suitable for calculating seismic response in the central zone of the valley where the hamlet is located and where previous analyses showed the highest soil liquefaction risk. Since the area is too large for an accurate definition of dynamic soil properties with the available budget, two sites, re¬presentative of the alluvial filling conditions in the deposit, were chosen to enhance knowledge of liquefaction hazard. This paper illustrates the results of the dynamic testing investigations and of total and effective stress-strain numerical analyses carried out. The findings are also compared with those obtained by applying the simplified procedures presented in the companion paper (PART I).
2002
4
48
67
T. CRESPELLANI; C. MADIAI
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/879118
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