A site-specific earthquake ground response analysis using a fault-based approach and nonlinear modeling: The Case Pente site (Sulmona, Italy)

Bordoni, Paola; Gori, Stefano; Akinci, Aybige; Visini, Francesco; Sgobba, Sara; Pacor, Francesca; Cara, F.; Pampanin, Stefano; Milana, Giuliano; Doglioni, Carlo

doi:10.1016/j.enggeo.2022.106970

Cited by 9 publications

(2 citation statements)

References 85 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained responses were used as a basic response for the finite element analysis. The Rayleigh coefficients (α R = 1.224, β R = 2.441×10) were determined arbitrarily by selecting the first natural frequency f 1 of the layer, and the mean (f 2 + f 3 )/2, of the 2nd and 3rd natural frequencies of the soil [16][17]. Numerical damping was assumed to be equal to zero.…”

Section: B Linear Analysis Of the Sds Profilementioning

confidence: 99%

A Comparative Analysis of Seismic Site Response in Time and Frequency Domains

Boudina

Bounouni

Allout

2023

Eng. Technol. Appl. Sci. Res.

View full text Add to dashboard Cite

This study aims primarily to perform a comparative analysis of the seismic response of a soil profile, in the time and frequency domains, in order to evaluate the seismic response of soil subjected to seismic excitation. After a few remarks made on the responses given by the linear elasticity method for this type of problem, it was considered necessary to use SHAKE 2000 and PLAXIS in this study. The obtained results were then compared with those of the available theoretical predictions. Rock elasticity, viscous damping and damping by hysteresis, and the nonlinearity of the ground were then taken into account. In addition, comparisons between recorded responses were also conducted.

show abstract

Section: B Linear Analysis Of the Sds Profilementioning

confidence: 99%

A Comparative Analysis of Seismic Site Response in Time and Frequency Domains

Boudina

Bounouni

Allout

2023

Eng. Technol. Appl. Sci. Res.

View full text Add to dashboard Cite

show abstract

“…A site response analysis is one of the most common tasks in geotechnical earthquake engineering, which aims to determine the response of the soil deposit to the motion of the bedrock immediately beneath it [2][3][4][5]. The transfer functions used in equivalent linear site response analysis require knowledge of two significant dynamic soil properties (the shear modulus and damping ratio), representing the soil's shear stiffness and energy dissipation, respectively.…”

Section: Introductionmentioning

confidence: 99%

The Dynamic Properties of Sand under Torsion: A Literature Review

Ahmad

Ray

2023

Geotechnics

View full text Add to dashboard Cite

Resonant column (RC) and the torsional simple shear (TOSS) tests have shown proven competency in acquiring precise and repeatable measurements regarding the shear modulus and damping ratio of soil. For most dynamic geotechnical problems, the shear modulus represents the stiffness of the soil, while the damping ratio describes energy dissipation. Many studies in the last few decades focused on developing the relevant equipment and investigating the effect of different soil properties on the dynamic behavior of soil. Researchers have introduced correlations to approximate this behavior without conducting dynamic torsional testing. Soil models (e.g., Ramberg-Osgood and Hardin-Drnevich) can simulate shear stress-strain curves after finding the curve-fitting parameters. Due to the complexity of dynamic behavior and its dependency on various factors in soils, the RO and HD equations help model the behavior more simply. This paper presents a literature review and evaluation of the studies, correlations, soil models, and parameters affecting the dynamic behavior of dry sand under torsion.

show abstract

Scenario-based seismic hazard for horizontal and vertical ground motions in central Italy

Visini,

Carafa,

Valentini

et al. 2024

Rend. Fis. Acc. Lincei

View full text Add to dashboard Cite

We propose an innovative methodology for seismic emergency planning and earthquake risk mitigation in central Italy by integrating three prototypal earthquake scenarios. The different scenarios derive maximum earthquake magnitudes from different input data. The first scenario utilizes local rheological, geological, and geophysical conditions; the second scenario considers the study area fault characteristics, while the third scenario relies on the cluster analysis of historical and instrumental earthquake records. The magnitudes and related uncertainties are combined using a conflation method to derive the expected ground motions for a grid of sites in central Italy. The resulting scenarios include peak ground acceleration and spectral ordinates, presented as maps and spectra for two selected localities. The vertical component of ground motion is also presented, because it is essential for accurately assessing the response of short-period structures. Our methodology complements the more classic seismic hazard analyses, offering additional insights for earthquake contingency planning and loss analysis. The proposed methodology is flexible; multiple models and ongoing advancements in scenario practice (near-field effects, vertical ground motion, and the choice of ground motion models) can be easily incorporated, increasing the effectiveness of seismic scenario modeling in seismic emergency planning and risk mitigation.

show abstract

A site-specific earthquake ground response analysis using a fault-based approach and nonlinear modeling: The Case Pente site (Sulmona, Italy)

Cited by 9 publications

References 85 publications

A Comparative Analysis of Seismic Site Response in Time and Frequency Domains

A Comparative Analysis of Seismic Site Response in Time and Frequency Domains

The Dynamic Properties of Sand under Torsion: A Literature Review

Scenario-based seismic hazard for horizontal and vertical ground motions in central Italy

Contact Info

Product

Resources

About