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Rozprawy doktorskie na temat „Seismic coefficients”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Knapp, Jennifer M. "Geology-based site coefficients for the Upper Mississippi Embayment." Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/21000.

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2

Sahoo, Pragyan Pradatta. "Analytical and numerical investigations of soil slopes subjected to seismic loadings." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2019. https://ro.ecu.edu.au/theses/2260.

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Seismic slope stability is one of the critical areas in the field of earthquake geotechnical engineering in view of catastrophic geohazards. Over the years, significant advances have been made in the methodologies of slope stability analysis subjected to seismic loadings. The seismic stability analysis of the slopes is influenced by various factors, and therefore, a complete seismic slope stability analysis must account the soil properties, geological parameters, slope geometry and loading to eliminate the susceptibility of slope failures. A detailed review of the literature shows that several

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3

Grosfeld, Valeria Silvina. "Coeficientes de reflexão elasticos : analise e aplicações." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263338.

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Orientador: Lucio Tunes Dos Santos<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica e Instituto de Geociências<br>Made available in DSpace on 2018-08-11T01:05:43Z (GMT). No. of bitstreams: 1 Grosfeld_Valeria_D.pdf: 2985169 bytes, checksum: 82ddf2042ee5ce573f870e3deebfa469 (MD5) Previous issue date: 2007<br>Resumo: Neste trabalho estudamos os coeficientes de reflexão RPP e RPS para ondas elásticas. Introduzimos uma nova aproximação tipo impedância para o coeficiente RPS, baseados no êxito deste tipo de aproximações para o RPP na região de ângulos críti

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4

Motamed, Maryam. "Effects of Site Response on the Correlation Structure of Ground Motion Residuals." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/25333.

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Seismic hazard analyses require an estimate of earthquake ground motions from future events. These predictions are achieved through Ground Motion Prediction Equations, which include a prediction of the median and the standard deviation of ground motion parameters. The differences between observed and predicted ground motions, when normalized by the standard deviation, are referred to as epsilon (𝜖). For spectral accelerations, the correlation structure of normalized residuals across oscillator periods is important for guiding ground motion selection. Correlation structures for large global dat

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Aretusini, Stefano. "Frictional processes of clay-rich gouges at seismic slip rates." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/frictional-processes-of-clayrich-gouges-at-seismic-slip-rates(1d6fca4a-86d2-4139-a431-f1e24d8ede8a).html.

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Smectite clay minerals are among the most common minerals in subduction zone megathrusts faults at shallow depth and in landslide decollements. Consequently, deformation processes at seismic slip rates (ca. 1 m/s) in smectites contribute to control the mechanics of megathrust earthquakes and landslide collapses. To investigate the deformation processes, rotary shear experiments on smectite-rich gouge layers (70/30 wt.% Ca-montmorillonite/opal) were performed. The experiments were conducted at ambient temperature and at 5 MPa normal stress. The gouges were sheared under vacuum (<0.001 mbar)

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6

Derenne, Sylvie. "Contribution a l'etude des proprietes physiques de mineraux du manteau inferieur." Paris 6, 1988. http://www.theses.fr/1988PA066281.

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Etude de petrologie experimentale sur les transformations a hautes pressions et hautes temperatures, de silicates et de germanates a structure olicine et pyroxene. Il a ete determine en fonction de la pression et de la temperature, la distribution du magnesium, du fer et du calcium entre mineraux mantelliques. Un modele thermodynamique coherent est construit et a permis de determiner le champ de stabilite de la perovskite silicatee et de proposer une interpretation de la discontinuite sismique des 670 km. Des mecanismes microscopiques de transformations de phase de l'olivine sont proposes. De

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7

Zhang, Yuchen M. Eng Massachusetts Institute of Technology. "Application of maximal information coefficient and affinity propagation to characterizing seismic time series associated with earthquakes." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111532.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 35-37).<br>Appropriate feature-based representations are significant for time series analysis and subsequent machine learning applications. A low-dimensional set of comprehensive features is instrumental to improving the efficiency and accuracy of classification. The main contribution of this work is to develop a new methodology to characterize seismic time series signals by extracting and selecti

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8

Kulkarni, Mandar S. "Multi-coefficient Dirichlet Neumann type elliptic inverse problems with application to reflection seismology." Birmingham, Ala. : University of Alabama at Birmingham, 2009. https://www.mhsl.uab.edu/dt/2010r/kulkarni.pdf.

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Thesis (Ph. D.)--University of Alabama at Birmingham, 2009.<br>Title from PDF t.p. (viewed July 21, 2010). Additional advisors: Thomas Jannett, Tsun-Zee Mai, S. S. Ravindran, Günter Stolz, Gilbert Weinstein. Includes bibliographical references (p. 59-64).

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9

Kessler, Samantha. "A study of the seismic response modification factor for log shear walls." Thesis, Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/3909.

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10

Idir, Achour. "Justification du coefficient de comportement sismique des structures en béton armé par des approches statiques équivalentes." Châtenay-Malabry, Ecole centrale de Paris, 1997. http://www.theses.fr/1997ECAP0508.

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Le calcul des constructions vis-à-vis du séisme en prenant en compte la réponse élastique linéaire conduit le plus souvent à des dimensionnements qui ne vont pas dans le sens de l'économie. Afin de permettre à l'ingénieur de tenir compte des différentes non linéarités, la plupart des règlements modernes (règles françaises PS92, règles européennes EC8, etc. ) ont préconisé de réduire les forces issues d'un calcul élastique linéaire par un coefficient appelé : coefficient de comportement. Un logiciel d'évaluation automatique de ce coefficient a été établi, selon la méthode préconisée par les règ

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11

Soundararajan, Sujitha. "Seismic Energy Dissipation, Self-Centering, and Settlement of Rocking Foundations: Analysis of Experimental Data with Comparisons to Numerical Modeling." Thesis, North Dakota State University, 2019. https://hdl.handle.net/10365/31711.

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The major objective of this study is to correlate the rocking foundation performance parameters with their capacity parameters and earthquake demand parameters using the results obtained from 142 centrifuge and shaking table experiments. It is found that seismic energy dissipation and permanent settlement of rocking foundations correlate well with rocking coefficient and Arias intensity of the earthquake, whereas the maximum moment and peak rotation of the foundation correlate well with peak ground acceleration. A numerical model, using the contact interface model available in OpenSees, is dev

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12

Rigano, Laura. "Analisi prestazionale del comportamento sismico di opere di sostegno in terra rinforzata." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/1161.

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Lo scopo della ricerca condotta è stato quello di estendere al caso delle opere di sostegno in terra rinforzata, il metodo pseudo-statico equivalente. L analisi individua un coefficiente sismico equivalente keq che, se utilizzato nell analisi pseudo-statica, conduce ad un valore del fattore di sicurezza congruente con quello che si otterrebbe dall analisi agli spostamenti. In particolare si può determinare un valore di keq per cui i margini di sicurezza in termini di forze Fpsd e di spostamenti Fk sono coincidenti e l analisi pseudo-statica risulta congruente con quella prestazionale. Fra i me

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13

Yang, Can. "Time-lapse Analysis of Borehole and Surface Seismic Data, and Reservoir Characterization of the Ketzin CO2 Storage Site, Germany." Doctoral thesis, Uppsala universitet, Geofysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-163013.

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The CO2SINK (and CO2MAN) project is the first onshore CO2 storage project in Europe. The research site is located near the town of Ketzin, close to Potsdam in Germany. Injection started in June 2008, with a planned injection target of 100,000 tonnes of CO2. In February 2011, around 45, 000 tons of CO2 had been injected into the saline aquifer at an approximate depth of 630 m. This thesis focuses on time-lapse analysis of borehole seismic data, surface seismic data and reservoir characterization at the Ketzin site. Baseline Moving Source Profiling (MSP) data were acquired in the borehole Ketzin

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14

MARACCHINI, GIANLUCA. "Vulnerabilità degli edifici esistenti: utilizzo e limiti di procedure e metodi adottati nella pratica ingegneristica per la sua valutazione e riduzione." Doctoral thesis, Università Politecnica delle Marche, 2017. http://hdl.handle.net/11566/245616.

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Il problema della mitigazione del rischio sismico degli edifici esistenti è in Italia una questione di primaria importanza, sia a causa dell’elevata vulnerabilità strutturale di gran parte del patrimonio edilizio esistente, sia a causa, nel caso degli edifici storici, del loro valore artistico e culturale. In un’ottica di prevenzione, date le scarse risorse disponibili e data la necessità di intervenire nel minor tempo possibile, risulta fondamentale poter disporre di strumenti affidabili che consentano di evitare inaccurate valutazioni di sicurezza sismica. La presente tesi affronta quindi al

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15

Zarzour, Noura. "Modélisation, identification structurelle et estimation du facteur de comportement pour les bâtiments en maçonnerie géo-sourcée dans les zones sismiques." Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ5056.

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L'utilisation de nouveaux matériaux de construction à faible émission de carbone dans les zones sismiques nécessite l'évaluation de la ductilité de la structure afin de concevoir correctement le bâtiment. Le manque d'estimation précise de performance structurelle limite l'utilisation de matériaux de construction écologiques. Une méthodologie fiable est établie pour la conception sismique des bâtiments construits par matériaux géo-sourcés. En particulier, un projet pilote de bâtiment en blocs de terre comprimée (BTC) dans une zone sismique moyen-élevé dans le sud de la France est réalisé. Parta

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16

Duckworth, Shane M. "Geogrid-soil interaction coefficients for seismic design." Thesis, 2001. http://hdl.handle.net/2429/11277.

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Tensar uniaxial geogrids were subjected to load-controlled monotonic and cyclic pullout testing to determine the relative coefficients of interaction. The variables investigated were geogrid series (UX1500SB, UX1400HS, and UX1600HS), soil type (poorly-graded medium fine sand and poorly-graded silty fine sand-sized glass beads) and normal stress (5, 10, and 20 kPa). The geogrid specimens, roughly 0.5 m wide by 1.5 m long, were strain-gauged to allow description of pullout behavior at small displacements. Results suggest that irrespective of geogrid series, soil type, or normal stress the

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17

Chou, Cheng-Li, and 周政立. "Comparison of Seismic Coefficients Based on the Design Codes in 2000 and 2009." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/96401781284051527059.

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18

Lin, Wang-Chuen, and 林旺春. "Seismic Design of Building Structures with Viscous Dampers Considering Distribution of Damping Coefficient." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/du4qup.

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博士<br>國立臺灣科技大學<br>營建工程系<br>99<br>There have been design specifications for the design of supplemental viscous dampers to building structures in existing seismic design codes. However, there exists no corresponding substantial procedure for distributing viscous damping coefficients along the height of the structures. In the thesis two non-repetitive design formulas for viscous damping coefficient distributions are proposed corresponding to a desired added damping ratio. The formulas are derived based on the concept that viscous damping coefficient distribution of each story is proportional to r

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19

(11022441), Prateek P. Shah. "Seismic Drift Demands." Thesis, 2021.

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<div>Observations from experiments and post-earthquake surveys have shown that drift is the key parameter for identifying potential damage of a structure during ground motions (Sozen, 1981). These observations suggest that drift should govern seismic design and evaluation of structures.</div><div><br></div><div>In this study, three methods for estimating drift demands were considered: 1) the method proposed by Sozen (2003) referred to in this study as Velocity of Displacement (VOD), 2) the Coefficient Method and 3) Nonlinear Dynamic Analysis (NDA). The reliability of each method was evaluated

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20

Liu, Cheng-lung, and 劉正隆. "Back calculating the seismic coefficient from the strength, slope and height of rock slopes." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/64821864401222306852.

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碩士<br>國立中央大學<br>應用地質研究所<br>100<br>The maximum stable relief is defined as the balance of topography which the denudation rates equal to uplift rates. In active orogen, the denudation rate is highly correlated to with landslides. For non-structural controlled landslide, rock mass strength is a key factor dominating the slope stability. Therefore, there is a close linkage between rock mass strength and relief in active orogen region. Furthermore, seismic forces also play an important role in slope stability. In this study, we selected a stable relief region located in central Taiwan. The rock ma

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21

GAUDIO, DOMENICO. "Interazione dinamica terreno - struttura di pozzi di fondazione di pile di ponti e viadotti." Doctoral thesis, 2017. http://hdl.handle.net/11573/947638.

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Nella tesi si studia il comportamento dei pozzi di fondazione di pile da ponte soggetti a eventi sismici di elevata intensità. Dopo un’analisi critica degli studi disponibili nella letteratura scientifica viene studiata l’influenza del comportamento elasto - plastico dei terreni di fondazione sulla prestazione dell’opera, valutata in termini di valori massimi e permanenti degli spostamenti e delle rotazioni ottenuti durante e al termine dell’evento sismico. Nello specifico, viene svolto uno studio parametrico conducendo analisi accoppiate svolte, nel dominio del tempo e in condizioni tridimen

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