Literatura académica sobre el tema "Turkish ground motion database"
Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros
Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Turkish ground motion database".
Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.
También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.
Artículos de revistas sobre el tema "Turkish ground motion database"
1
Gülerce, Zeynep, Bahadır Kargoığlu y Norman A. Abrahamson. "Turkey-Adjusted NGA-W1 Horizontal Ground Motion Prediction Models". Earthquake Spectra 32, n.º 1 (febrero de 2016): 75–100. http://dx.doi.org/10.1193/022714eqs034m.
Texto completoResumen
The objective of this paper is to evaluate the differences between the Next Generation Attenuation: West-1 (NGA-W1) ground motion prediction models (GMPEs) and the Turkish strong ground motion data set and to modify the required pieces of the NGA-W1 models for applicability in Turkey. A comparison data set is compiled by including strong motions from earthquakes that occurred in Turkey and earthquake metadata of ground motions consistent with the NGA-W1 database. Random-effects regression is employed and plots of the residuals are used to evaluate the differences in magnitude, distance, and site amplification scaling. Incompatibilities between the NGA-W1 GMPEs and Turkish data set in small-to-moderate magnitude, large distance, and site effects scaling are encountered. The NGA-W1 GMPEs are modified for the misfit between the actual ground motions and the model predictions using adjustments functions. Turkey-adjusted NGA-W1 models are compatible with the regional strong ground motion characteristics and preserve the well-constrained features of the global models.
2
Kale, Özkan. "Some Discussions on Data-Driven Testing of Ground-Motion Prediction Equations under the Turkish Ground-Motion Database". Journal of Earthquake Engineering 23, n.º 1 (11 de septiembre de 2017): 160–81. http://dx.doi.org/10.1080/13632469.2017.1323047.
Texto completo
3
Afshari, Kioumars, Jonathan P. Stewart y Jamison H. Steidl. "California Ground Motion Vertical Array Database". Earthquake Spectra 35, n.º 4 (noviembre de 2019): 2003–15. http://dx.doi.org/10.1193/070218eqs170dp.
Texto completoResumen
We present a data set of ground motion recordings and site information from vertical array sites in California. The recordings include two horizontal components of ground shaking at the ground surface level and from downhole sensors. The availability of both surface and downhole recordings at the same site facilitates direct observations of site response. The site data include measured shear-and compression-wave velocities, and, where available, geotechnical boring logs. We considered 39 vertical array sites in California and chose 21 for inclusion in the database on the basis of having at least four pairs of surface/downhole recordings. The recordings and site data are presented in a data repository, which is accessible at the DesignSafe platform (DOI: 10.17603/146DS2N680). The original digital accelerograms are processed in a manner consistent with NGA-West2 protocols. In this paper, this data set is compared to a similar but larger data set from Japanese vertical arrays compiled by others.
4
Ates, Ref'an. "Turkish strong ground motion data acquisition and analysis". Physics of the Earth and Planetary Interiors 38, n.º 2-3 (abril de 1985): 123–33. http://dx.doi.org/10.1016/0031-9201(85)90150-5.
Texto completo
5
Goulet, Christine A., Tadahiro Kishida, Timothy D. Ancheta, Chris H. Cramer, Robert B. Darragh, Walter J. Silva, Youssef MA Hashash et al. "PEER NGA-East database". Earthquake Spectra 37, n.º 1_suppl (julio de 2021): 1331–53. http://dx.doi.org/10.1177/87552930211015695.
Texto completoResumen
This article documents the earthquake ground motion database developed for the NGA-East Project, initiated as part of the Next Generation Attenuation (NGA) research program and led by the Pacific Earthquake Engineering Research Center (PEER). The project was focused on developing a ground motion characterization model (GMC) model for horizontal ground motions for the large region referred to as Central and Eastern North America (CENA). The CENA region covers most of the U.S. and Canada, from the Rocky Mountains to the Atlantic Ocean and is characterized tectonically as a stable continental region (SCR). The ground-motion database includes the two- and three-component ground-motion recordings from numerous selected events relevant to CENA ( M > 2.5, with distances up to 3500 km) that have been recorded since 1976. The final database contains over 27,000 time series from 82 earthquakes and 1271 recording stations. The ground motion database includes uniformly processed time series, 5% damped pseudo-spectral acceleration (PSA) median-component ordinates for 429 periods ranging from 0.01 to 10 s, duration and Arias intensity in 5% increments, and Fourier amplitude spectra for different time windows. Ground motions and metadata for source, path, and site conditions were subjected to quality checks by topical working groups and the ground-motion model (GMM) developers. The NGA-East database constitutes the largest database of processed recorded ground motions in SRCs and is publicly available from the PEER ground-motion database website.
6
Chiou, Brian, Robert Darragh, Nick Gregor y Walter Silva. "NGA Project Strong-Motion Database". Earthquake Spectra 24, n.º 1 (febrero de 2008): 23–44. http://dx.doi.org/10.1193/1.2894831.
Texto completoResumen
A key component of the NGA research project was the development of a strong-motion database with improved quality and content that could be used for ground-motion research as well as for engineering practice. Development of the NGA database was executed through the Lifelines program of the PEER Center with contributions from several research organizations and many individuals in the engineering and seismological communities. Currently, the data set consists of 3551 publicly available multi-component records from 173 shallow crustal earthquakes, ranging in magnitude from 4.2 to 7.9. Each acceleration time series has been corrected and filtered, and pseudo absolute spectral acceleration at multiple damping levels has been computed for each of the 3 components of the acceleration time series. The lowest limit of usable spectral frequency was determined based on the type of filter and the filter corner frequency. For NGA model development, the two horizontal acceleration components were further rotated to form the orientation-independent measure of horizontal ground motion (GMRotI50). In addition to the ground-motion parameters, a large and comprehensive list of metadata characterizing the recording conditions of each record was also developed. NGA data have been systematically checked and reviewed by experts and NGA developers.
7
Bindi, D., F. Pacor, L. Luzi, R. Puglia, M. Massa, G. Ameri y R. Paolucci. "Ground motion prediction equations derived from the Italian strong motion database". Bulletin of Earthquake Engineering 9, n.º 6 (8 de septiembre de 2011): 1899–920. http://dx.doi.org/10.1007/s10518-011-9313-z.
Texto completo
8
Wang, Gang, Robert Youngs, Maurice Power y Zhihua Li. "Design Ground Motion Library: An Interactive Tool for Selecting Earthquake Ground Motions". Earthquake Spectra 31, n.º 2 (mayo de 2015): 617–35. http://dx.doi.org/10.1193/090612eqs283m.
Texto completoResumen
The Design Ground Motion Library (DGML) is an interactive tool for selecting earthquake ground motion time histories based on contemporary knowledge and engineering practice. It was created from a ground motion database that consists of 3,182 records from shallow crustal earthquakes in active tectonic regions rotated to fault-normal and fault-parallel directions. The DGML enables users to construct design response spectra based on Next-Generation Attenuation (NGA) relationships, including conditional mean spectra, code spectra, and user-specified spectra. It has the broad capability of searching for time history record sets in the database on the basis of the similarity of a record's response spectral shape to a design response spectrum over a user-defined period range. Selection criteria considering other ground motion characteristics and user needs are also provided. The DGML has been adapted for online application by the Pacific Earthquake Engineering Research Center (PEER) and incorporated as a beta version on the PEER database website.
9
Gülerce, Zeynep, Ronnie Kamai, Norman A. Abrahamson y Walter J. Silva. "Ground Motion Prediction Equations for the Vertical Ground Motion Component Based on the NGA-W2 Database". Earthquake Spectra 33, n.º 2 (mayo de 2017): 499–528. http://dx.doi.org/10.1193/121814eqs213m.
Texto completoResumen
Empirical ground motion models for the vertical component from shallow crustal earthquakes in active tectonic regions are derived using the PEER NGA-West2 database. The model is applicable to magnitudes 3.0–8.0, distances of 0–300 km, and spectral periods of 0–10 s. The model input parameters are the same as used by Abrahamson et al. (2014) except that the nonlinear site response and depth to bedrock effects are evaluated but found to be insignificant. Regional differences in large distance attenuation and site amplification scaling between California, Japan, China, Taiwan, Italy, and the Middle East are included. Scaling for the hanging-wall effect is incorporated using the constraints from numerical simulations by Donahue and Abrahamson (2014) . The standard deviation is magnitude dependent with smaller magnitudes leading to larger standard deviations at short periods but smaller standard deviations at long periods. The vertical ground motion model developed in this study can be paired with the horizontal component model proposed by Abrahamson et al. (2014) to produce a V/H ratio. For applications where the horizontal spectrum is derived from the weighted average of several horizontal ground motion models, a V/H model derived directly from the V/H data (such as Gülerce and Abrahamson 2011 ) should be preferred.
10
Lin, Li, Rui Zhi Wen, Bao Feng Zhou y Da Cheng Shi. "Study on Strong Motion Records Database and Selection Methods". Applied Mechanics and Materials 256-259 (diciembre de 2012): 2117–21. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.2117.
Texto completoResumen
In this paper, PEER Ground Motion Databases (PGMD) at the Pacific Earthquake Engineering Research Center (PEER) was updated by 314 sets of ground motion records of great earthquakes in recent years, which expanded the application of this database. This paper reviews alternative selection methods for strong ground motion records. The expanded database could make the different selection and scaling of strong motion records in great earthquakes, and the conditional mean spectrum (CMS) method could be applied for the strong motion records selection in structural spectrum analysis.
Tesis sobre el tema "Turkish ground motion database"
1
Akyuz, Emre. "Development Of Site Specific Vertical Design Spectrum For Turkey". Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615403/index.pdf.
Texto completoResumen
Vertical design spectra may be developed in a probabilistic seismic hazard assessment
(PSHA) by computing the hazard using vertical ground motion prediction equations
(GMPEs), or using a vertical-to-horizontal spectral acceleration (V/H) ratio GMPEs to scale
the horizontal spectrum that was developed using the results of horizontal component PSHA.
The objective of this study is to provide GMPEs that are compatible with regional ground
motion characteristics to perform both alternatives. GMPEs for the V/H ratio were developed
recently by Gülerce and Abrahamson (2011) using NGA-W1 database. A strong motion dataset consistent with the V/H ratio model parameters is developed by including strong motion data from earthquakes occurred in Turkey with at least three recordings per earthquake. The compatibility of GA2011 V/H ratio model with the magnitude, distance, and site amplification scaling of Turkish ground motion dataset is evaluated by using inter-event and intra-event residual plots and necessary coefficients of the model is adjusted to reflect the regional characteristics. Analysis of the model performance in the recent moderate-tolarge magnitude earthquakes occurred in Turkey shows that the Turkey-Adjusted GA2011 model is a suitable candidate V/H ratio model for PSHA studies conducted in Turkey. Using the same dataset, a preliminary vertical ground motion prediction equation for Turkey consistent with the preliminary vertical model based on NGA-W1 dataset is developed. Proposed preliminary model is applicable to magnitudes 5-8.5, distances 0-200 km, and spectral periods of 0-10 seconds and offers an up-to-date alternative to the regional vertical GMPEs proposed by Kalkan and Gü
lkan (2004).
2
Erdogan, Ozgur. "Main Seismological Features Of Recently Compiled Turkish Strong Motion Database". Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609679/index.pdf.
Texto completoResumen
In this thesis it is aimed to compile the Turkish strong-motion database for its efficient use in earthquake engineering and strong-motion seismology related studies. Within this context, the Turkish strong-motion database is homogenized in terms of basic earthquake source parameters (e.g. magnitude, style-of-faulting) as well as site classes and different source-to-site distance metrics. As part of this objective, empirical relationships for different magnitude scales are presented for further harmonization of the database.
Data processing of the selected raw (unprocessed) strong-motion accelerograms that do not suffer from non-standard problems are realized. A comparative study is also conducted between the peak ground-motion values of Turkish strong-motion database with the estimations computed from different ground-motion prediction models. This way the regional differences of Turkish database are evaluated by making use of global prediction models.
It is believed that the main products of this thesis will be of great use for reliable national seismic risk and hazard studies.
3
Sandikkaya, Mustafa Abdullah. "Site Classification Of Turkish National Strong-motion Recording Sites". Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609728/index.pdf.
Texto completoResumen
Since 1976, the General Directorate of Disaster Affairs of Turkey has deployed several strong-motion accelerographs at selected sites. Within the framework of the project entitled Compilation of National Strong Ground Motion Database in Accordance with International Standards, initiated in 2006, site conditions at a total of 153 strong-motion sites were investigated within the uppermost 30 m depth through boreholes including Standard Penetration Testing and surface seismics by means of Multi-channel Analysis of Surface Waves (MASW). In this study, firstly, the assessment of the site characterization was held by making use NEHRP Provisions, EC-8 and Turkish Seismic Design Code. The corrected penetration resistances are calculated and observed how it affects the classification. In addition, the consistency of site classes obtained from either penetration resistance or shear wave velocity criteria is examined. Also the consistency of the boundaries of the site classes in terms of shear wave velocity and penetration resistance data pairs are investigated. Secondly, the liquefaction potential of these sites is examined. Thirdly and finally, the shear wave velocity profiles obtained from MASW technique are contrasted to other seismic tests.
4
Bahrampouri, Mahdi. "Ground Motion Prediction Equations for Non-Spectral Parameters using the KiK-net Database". Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/87704.
Texto completoResumen
The KiK-net ground motion database is used to develop ground motion prediction equations for Arias Intensity (Ia), 5-95% Significant Duration (Ds5-95), and 5-75% Significant Duration (Ds5-75). Relationships are developed both for shallow crustal earthquakes and subduction zone earthquakes (hypocentral depth less than 45 km). The models developed consider site amplification using VS30 and the depth to a layer with VS=800 m/s (h800). We observe that the site effect for
is magnitude dependent. For Ds5-95 and Ds5-75, we also observe strong magnitude dependency in distance attenuation. We compare the results with previous GMPEs for Japanese earthquakes and observe that the relationships are similar. The results of this study also allow a comparison between earthquakes in shallow-crustal regions, and subduction regions. This comparison shows that Arias Intensity has similar magnitude and distance scaling between both regions and generally Arias Intensity of shallow crustal motions are higher than subduction motions. On the other hand, the duration of shallow crustal motions are longer than subduction earthquakes except for records with large distance and small magnitude causative earthquakes. Because small shallow crustal events saturate with distance, ground motions with large distances and small magnitudes have shorter duration for shallow crustal events than subduction earthquakes.
5
Kargioglu, Bahadir. "Turkey-adjusted Next Generation Attenuation Models". Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614660/index.pdf.
Texto completoResumen
The objective of this study is to evaluate the regional differences between the worldwide based NGA-W1 ground motion models and available Turkish strong ground motion dataset and make the required adjustments in the NGA-W1 models. A strong motion dataset using parameters consistent with the NGA ground motion models is developed by including strong motion data from Turkey. Average horizontal component ground motion is computed for response spectral values at all available periods using the GMRotI50 definition consistent with the NGA-W1 models. A random-effects regression with a constant term only is used to evaluate the systematic differences in the average level of shaking. Plots of residuals are used to evaluate the differences in the magnitude, distance, and site amplification scaling between the Turkish dataset and the NGA-W1 models. Model residuals indicated that the ground motions are overestimated by all 5 NGA-W1 models significantly, especially for small-to-moderate magnitude earthquakes. Model residuals relative to distance measures plots suggest that NGA-W1 models slightly underestimates the ground motions for rupture distances within 100-200 km range. Models including the aftershocks over-predict the ground motions at stiff soil/engineering rock sites. The misfit between the actual data and model predictions are corrected with adjustments functions for each scaling term. Turkey-Adjusted NGA-W1 models proposed in this study are compatible with the Turkish strong ground motion characteristics and preserve the well-constrained features of the global models. Therefore these models are suitable candidates for ground motion characterization and PSHA studies conducted in Turkey.
6
Ocak, Recai Soner. "Probabilistic Seismic Hazard Assessment Of Eastern Marmara And Evaluation Of Turkish Earthquake Code Requirements". Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613902/index.pdf.
Texto completoResumen
The primary objective of this study is to evaluate the seismic hazard in the Eastern Marmara Region using improved seismic source models and enhanced ground motion prediction models by probabilistic approach. Geometry of the fault zones (length, width, dip angle, segmentation points etc.) is determined by the help of available fault maps and traced source lines on the satellite images. State of the art rupture model proposed by USGS Working Group in 2002 is applied to the source system. Composite reoccurrence model is used for all seismic sources in the region to represent the characteristic behavior of North Anatolian Fault. New and improved global ground motion models (NGA models) are used to model the ground motion variability for this study. Previous studies, in general, used regional models or older ground motion prediction models which were updated by their developers during the NGA project. New NGA models were improved in terms of additional prediction parameters (such as depth of the source, basin effects, site dependent standard deviations, etc.), statistical approach, and very well constrained global database. The use of NGA models reduced the epistemic uncertainty in the total hazard incorporated by regional or older models using smaller datasets. The results of the study is presented in terms of hazard curves, deaggregation of the hazard and uniform hazard spectrum for six main locations in the region (Adapazari, Duzce, Golcuk, Izmit, Iznik, and Sapanca City Centers) to provide basis for seismic design of special structures in the area. Hazard maps of the region for rock site conditions at the accepted levels of risk by Turkish Earthquake Code (TEC-2007) are provided to allow the user perform site-specific hazard assessment for local site conditions and develop site-specific design spectrum. Comparison of TEC-2007 design spectrum with the uniform hazard spectrum developed for selected locations is also presented for future reference.
7
Syed, Riaz. "Development of Computational Tools for Characterization, Evaluation, and Modification of Strong Ground Motions within a Performance-Based Seismic Design Framework". Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/36435.
Texto completoResumen
One of the most difficult tasks towards designing earthquake resistant structures is the determination of critical earthquakes. Conceptually, these are the ground motions that would induce the critical response in the structures being designed. The quantification of this concept, however, is not easy. Unlike the linear response of a structure, which can often be obtained by using a single spectrally modified ground acceleration history, the nonlinear response is strongly dependent on the phasing of ground motion and the detailed shape of its spectrum. This necessitates the use of a suite (bin) of ground acceleration histories having phasing and spectral shapes appropriate for the characteristics of the earthquake source, wave propagation path, and site conditions that control the design spectrum. Further, these suites of records may have to be scaled to match the design spectrum over a period range of interest, rotated into strike-normal and strike-parallel directions for near-fault effects, and modified for local site conditions before they can be input into time-domain nonlinear analysis of structures. The generation of these acceleration histories is cumbersome and daunting. This is especially so due to the sheer magnitude of the data processing involved.
The purpose of this thesis is the development and documentation of PC-based computational tools (hereinafter called EQTools) to provide a rapid and consistent means towards systematic assembly of representative strong ground motions and their characterization, evaluation, and modification within a performance-based seismic design framework. The application is graphics-intensive and every effort has been made to make it as user-friendly as possible. The application seeks to provide processed data which will help the user address the problem of determination of the critical earthquakes. The various computational tools developed in EQTools facilitate the identification of severity and damage potential of more than 700 components of recorded earthquake ground motions. The application also includes computational tools to estimate the ground motion parameters for different geographical and tectonic environments, and perform one-dimensional linear/nonlinear site response analysis as a means to predict ground surface motions at sites where soft soils overlay the bedrock.
While EQTools may be used for professional practice or academic research, the fundamental purpose behind the development of the software is to make available a classroom/laboratory tool that provides a visual basis for learning the principles behind the selection of ground motion histories and their scaling/modification for input into time domain nonlinear (or linear) analysis of structures. EQTools, in association with NONLIN, a Microsoft Windows based application for the dynamic analysis of single- and multi-degree-of-freedom structural systems (Charney, 2003), may be used for learning the concepts of earthquake engineering, particularly as related to structural dynamics, damping, ductility, and energy dissipation.Master of Science
8
Ozun, Ahsen. "Fragility Based Assessment Of Low". Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608334/index.pdf.
Texto completoResumen
In this study, the seismic fragility assessment of low-rise and mid-rise reinforced concrete frame buildings which constitute approximately 75 % of the total building stock in Turkey is investigated to quantify the earthquake risk. The inventory used in this study is selected from Düzce damage database which was compiled after the devastating 1999 earthquakes in the Marmara region. These buildings are not designed according to the current code regulations and the supervision in the construction phase is not adequate. The building database is divided into sub-classes according to the height and absence of infilled walls. Each building in the database is represented by an equivalent single degree of freedom system with three structural parameters: period, strength, and post-elastic stiffness ratio. The ground motion records are selected from different parts of the world covering a wide range of characteristics. The capacity of the structure is represented for each sub-class by the limit states. Hence, a set of fragility curves for low- and mid-rise reinforced concrete structures are developed by making use of the building characteristics in the database. The generated fragility curve set is referred as &ldquo
reference&rdquo
since it forms the basis of a parametric study. A parametric study is conducted to examine the influence of post-elastic stiffness ratio, simulation and sampling techniques, sample size, limit state definition and degrading behavior on the final fragility curves. Estimated damage distribution after two consecutive major earthquakes is compared with the actual field data in order to investigate the validity of the generated fragility curves.
9
Sandikkaya, Mustafa Abdullah. "Prochaine generation paneuropéennes équations de prédiction de mouvements de terrains pour les paramêtres de ingénierie". Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENU008/document.
Texto completoResumen
Cette étude présente tout d'abord la récente banque de données fort mouvement pan-européen qui est mis à jour et la version étendue de bases de données paneuropéennes précédentes. Les métadonnées relatives est soigneusement compilé et réévalué. La base de données est conforme aux normes élevées pour être des ressources de la communauté paneuropéenne de génie parasismique. Ensuite, une étude empirique non linéaire place amplification modèle, fonction de la moyenne en fonction du temps de la plus haute 30m profil de vitesse des ondes de cisaillement et l'accélération maximale du sol sur le roc, est développé. L'objectif principal de tirer un tel modèle est de l'utiliser dans les équations de prédiction des mouvements du sol (GMPEs). Par ailleurs, l'évaluation des facteurs de site dans les codes de conception parasismique montre qu'il est également applicable dans les facteurs de sites informatiques. À cette fin, une autre méthodologie qui prend en compte les résultats de l'analyse de l'aléa sismique probabiliste et déterministe modèles de site est proposé. Cette étude génère GMPEs de réponse élastique ordonnées spectrales horizontale et verticale d'amortissement de 5%. Plutôt que d'équations directs pour le mouvement vertical, afin d'obtenir spectre du danger horizontale et verticale cohérente, compatible GMPE de rapport vertical à horizontal est préférable. Modèles de mise à l'échelle d'amortissement supplémentaires pour modifier les spectres horizontaux et verticaux d'autres ratios d'amortissement sont proposéesThis study firstly presents the recent pan-European strong-motion databank that is updated and extended version of previous pan-European databases. The pertaining metadata is carefully compiled and reappraised. The database meets high standards for being resource of pan-European earthquake engineering community. Then, an empirical nonlinear site amplification model, function of time-based average of uppermost 30m shear wave velocity profile and peak ground acceleration on rock, is developed. The primary aim of deriving such a model is to use it in ground motion prediction equations (GMPEs). Besides, the evaluation of site factors in the seismic design codes shows that it is also applicable in computing site factors. To this end, an alternative methodology that considers the results of probabilistic seismic hazard analysis and deterministic site models is proposed. Finally, this study generates GMPEs for horizontal and vertical elastic response spectral ordinates for different damping values between 1% to 50%. Rather than direct equations for vertical motion, to obtain consistent horizontal and vertical hazard spectrum, compatible vertical-to-horizontal ratio GMPE is preferred. Additional damping scaling models to modify horizontal and vertical spectra at other damping ratios are proposed
Capítulos de libros sobre el tema "Turkish ground motion database"
1
Charney, Finley A. "Using the PEER NGA Ground Motion Database". En Seismic Loads, 211–14. Reston, VA: American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784413524.apc.
Texto completo
2
Chen, Yi y Ramazan S. Aygün. "Synthetic Video Generation for Evaluation of Sprite Generation". En Methods and Innovations for Multimedia Database Content Management, 160–87. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-1791-9.ch010.
Texto completoResumen
Sprite generation is the process of aligning, warping, and blending of pixels that belong to an object in a video. The evaluation of the correctness of a sprite is usually accomplished by a combination of objective and subjective evaluations. Availability of ground-truth image would help mere objective evaluation. In this paper, the authors present video generation from an image based on various camera motion parameters to be used as ground-truth for the sprite evaluation. This paper introduces a framework for evaluation of sprite generation algorithms. Experiments under the proposed framework were performed on the synthetic videos of different camera motion patterns to reveal the components of the sprite generation algorithm to be improved.
Actas de conferencias sobre el tema "Turkish ground motion database"
1
Scasserra, Giuseppe, Giuseppe Lanzo, Jonathan P. Stewart, Beniamino D'Elia, Adolfo Santini y Nicola Moraci. "SISMA (Site of Italian Strong Motion Accelerograms): a Web-Database of Ground Motion Recordings for Engineering Applications". En 2008 SEISMIC ENGINEERING CONFERENCE: Commemorating the 1908 Messina and Reggio Calabria Earthquake. AIP, 2008. http://dx.doi.org/10.1063/1.2963795.
Texto completo
2
Cheng, Pi-Ming, Raed N. Rizq y Arthur G. Erdman. "“MKCIRCLES”: An Interactive Computer Graphics Design Tool to Solve the Generalized Three-Precision-Position Synthesis Problem". En ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0204.
Texto completoResumen
Abstract A new interactive computer graphics program (MKCIRCLES) has been developed to solve the following three-precision-position dyad synthesis tasks: (i) motion generation, (ii) path generation with prescribed timing and (iii) a new solution strategy for (a) motion generation for a user-specified range of the prescribed-timing angular displacements, and (b) path generation with prescribed timing for a user-specified range of the rotations of the floating link. The latter two cases address a problem that is encountered in linkage design; namely, the need to specify limits that certain variables may range through as opposed to specifying fixed values that constrain the design unnecessarily, thus increasing the total number of designs from which to choose. As a result of this new approach, two planar regions, representing all permissible dyad ground-pivot locations and all permissible dyad moving-pivot locations, are identified and plotted. The program uses the properties of the circle-point circles (K1-circles) and the center-point circles (M-circles) throughout the synthesis procedure. MKCIRCLES also allows the designer to define a region in which the ground-pivots are constrained to lie and determine the corresponding moving-pivot region (and vice versa). The program is shown to be a useful design tool and provides greater geometric and kinematic insight into the general three-precision-position synthesis problem.
3
Bejune, David, John David, William Ouellette, Brian Zeilinski, Neal Chen, Brent Peura y Robert L. Norton. "Design of a Walking Simulator". En ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0289.
Texto completoResumen
Abstract A prototype of a simple, footwear-testing machine which mimics the physiologic motions and forces of walking in one plane has been designed, developed and tested. Eleven ROTC students were measured and filmed to obtain information on the kinematics of the lower limb and the dynamic forces exerted by their footwear on the ground while walking across a load plate. A machine was then designed which uses the coupler curve of a fourbar linkage to simulate the planar kinematics of the heel-strike and toe-off portions of walking. A standard-issue U. S. Army combat boot is attached to the fourbar linkage’s coupler link on a prosthetic foot such that the heel and sole are close to the moving centrode of the coupler. The ground plane is the fixed centrode. Thus their relative motion approximates pure rolling. The boot is “walked” against a force-plate which is loaded by an air cylinder. This force plate is pulled away during the walking “backstroke”. The dynamic forces of impact are measured by two force transducers. These measured forces simulate the vertical physiologic forces of walking and the kinematics provides realistic physiologic motions to the boot in a vertical plane.
4
Ma, Deren y Hamid Lankarani. "A Multibody/Finite Element Analysis Approach for Modeling of Crash Dynamic Responses". En ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0047.
Texto completoResumen
Abstract Computer models of the human body are robust tools for gaining insight into the gross motion of ground vehicle or aircraft occupants and evaluating the loads and deformations of their critical parts. The knowledge of occupant responses will help in the determination of the type and probable causes of injuries that may be sustained during a crash. One important aspect in crash analysis is how the large motion of the relatively rigid segments of an occupant, such as the limbs, and the small deformations of flexible segments, such as the spine column, are inter-related. To this end, a general methodology for kineto-static analysis of multibody systems with flexible structures undergoing large motion and complicated structural deformations is developed. Rigid multibody dynamics is used to predict the gross motions and displacements at the boundaries. Finite element analysis is then performed to determine the corresponding loads and deformations of the entire structure. Based on this methodology, a multibody model of the occupant with a finite element model of the lumbar spine is developed for a Hybrid II (Part 572) anthropomorphic test dummy. The analytical results obtained from the code are correlated with the experimental results from the impact sled tests. Comparison of the results has shown much closer match between the analyses and the experiments.
5
Demjancukova, Katerina y Dana Prochazkova. "Probabilistic Seismic Hazard Assessment in Countries With Low Seismicity". En ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28937.
Texto completoResumen
The region of the Czech Republic is mostly composed of the Bohemian Massif which is considered as a geological unit with low seismic activity. Nevertheless, all critical objects as the nuclear power plants, big dams etc. are built as aseismic structures. The nuclear installations have to satisfy the IAEA safety standards and requirements. One of important phenomena that have to be involved in the PSHA process is the diffuse seismicity. In 2010 International Atomic Energy Agency issued a specific safety guide SSG-9 Seismic Hazards in Site Evaluation for Nuclear Installations. The key chapters are focused on general recommendations, necessary information and investigations (database), construction of a regional seismotectonic model, evaluation of the ground motion hazard, probabilistic seismic hazards analysis (PSHA), deterministic seismic hazards analysis, potential for fault displacement at the site, design basis ground motion, fault displacement and other hazards, evaluation of seismic hazards for nuclear installations other than NPPs. In the paper a numerical example of seismic hazard assessment will be presented with emphasis on problems and particularities related to PSHA in countries with low seismic activity.
6
Fontanili, Luca, Massimo Milani, Luca Montorsi y Giordano Valente. "Gait Analysis for Muscular Forces Evaluation in Human Movement: Integration Protocol of Typical Measurement Methods". En ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87670.
Texto completoResumen
The paper focuses on the gait analysis for the investigation of the typical events occurring in human movements and validate its use as a method for musculoskeletal disease evaluation and for the improvement of athletic training. In the present research the motion capture system is combined with an in-house developed prototype of uniaxial force plates for the measurement of the vertical component of ground reaction forces during movement. While similar techniques are implemented for gait, this equipment can be employed to investigate running, thus, covering a larger number of possible applications and providing a deeper insight either of the athlete performance or the disease analysis. For the prevention and the treatment of those events occurring during running, a thorough understanding of its mechanisms is critical; therefore, a method for evaluating both the kinematic behavior of the human body and the ground reaction forces combined to a model for determining the muscle forces is proposed. An infrared motion capture technique is adopted for measuring accurately the body motion and a multiple force-plate system is used to calculate the force exerted by the ground and sub-divided in the three components by an ad-hoc developed routine. Moreover, the data are used as input parameters for the OpenSim software to derive muscles forces. Finally, the potential of the proposed protocol is determined by an experimental campaign on healthy subjects and a significant database of muscle forces is constructed for different running speeds.
7
Gupta, Aaron D. "Stress Analysis of the Target Enclosure at the R14B Firing Range". En ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium collocated with the ASME 1995 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/cie1995-0758.
Texto completoResumen
Abstract A stress analysis of the target enclosure structure at the R14B firing range at Aberdeen Proving Ground (APG), MD, subjected to an internal blast and worst-case fragment impact was conducted to assure structural integrity and safe operation of the structure during tests. The reflected dynamic pressure loads due to explosive blast were estimated from the CONWEP explosion effects code developed by the U.S. Army Waterways Experiment Station and were modeled as exponentially decaying pressure pulses which could be approximated as triangular loads with equivalent impulses. Fragment impact loads are approximated from a momentum-impulse balance formulation as step loading functions. A closed-form solution of the equation of motion of a sidewall of the structure subjected to a triangular blast load was obtained and verified by a three-dimensional (3-D) finite element model.
8
West, Mark y Haruhiko Asada. "A Method for Designing Ball Wheels for Omnidirectional Vehicles". En ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0105.
Texto completoResumen
Abstract A method for designing ball wheel mechanisms for vehicles with omnidirectional motion capability is presented in this paper. A ball wheel mechanism holds a spherical tire while allowing it to rotate with two degrees of freedom such that it may roll in an arbitrary direction on the floor. This paper concerns a particular class of ball wheel mechanisms which hold a spherical tire in a special arrangement of rollers. Due to point contacts between these rollers and the tire, and between the tire and the ground, specific considerations are required to achieve large payload capacity and traction as well as high position control accuracy. First, we review the kinematic conditions for theoretical functionality of the class of ball wheels and describe a proof-of-concept prototype vehicle. Starting from the generalized ball wheel mechanism, we then identify a subset of designs that contains the optimal ball wheel mechanisms for most applications. Within this subset, the design is optimized by parameterizing the design space. By analyzing the phenomena relating the design parameters to three performance indices — payload capacity, acceleration and repeatability — a surface can found in the performance space that represents the maximum ball wheel performance for all permutations of the design parameters. This surface will be used by vehicle designers to evaluate ball wheel performance in comparison with other omnidirectional drive mechanisms. A simple lookup table can then be used to find the design parameter values which provide desired performance.
9
Nyman, Douglas J. y Robert L. Nigbor. "Web-Based Virtual Seismic Monitoring for Pipelines". En ASME 2013 International Pipeline Geotechnical Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ipg2013-1946.
Texto completoResumen
Strong motion seismic monitoring systems are often installed at critical industrial facilities located in areas of moderate to high seismicity. The objective of seismic monitoring is to facilitate post-earthquake evaluation and emergency action by providing rapid detection of seismic events and associated data, alarms, and information. Seismic monitoring can play a similar role for pipelines, especially considering the added geohazard risks along right-of-ways that might include landslides, fault crossings, and liquefaction hazard areas. Because of spatial distribution, seismic monitoring for pipelines is more complex than that required for a site-specific facility. In recent years, graphical software known as “ShakeMap,” developed by U.S. Geological Survey (USGS), has been used to rapidly estimate and distribute the distribution and intensity of earthquake ground motions from an earthquake. The ShakeMap solution for ground motions takes into account the distance from the earthquake source, the rock and soil conditions at sites, and variations in the propagation of seismic waves due to complexities in the structure of the Earth’s crust. ShakeMap ground motion data is available for automatic download from the USGS for potentially damaging earthquakes, e.g., Magnitude 5 and greater, within minutes after the event. USGS’ ShakeMap provides the opportunity to implement web-based systems to conduct automatic seismic monitoring for cross-county pipelines or networks of pipelines. A monitoring website can be equipped with a seismic database of fragilities that characterize geohazard vulnerabilities along pipeline right-of-ways as well as support facilities. Website software can be used to process the ground motion data to assess the threat to the pipeline system, advise pipeline controllers on the need for shutdown, and guide post-earthquake inspection on a prioritized basis. Drawing from the authors’ recent seismic monitoring experience for the Trans-Alaska Pipeline and other lifeline facilities, a conceptual plan for web-based seismic monitoring for pipelines is presented. The choice of a software platform can range from the use of open-source software available from USGS (ShakeCast) to custom software making direct use of gridded data downloads. Regardless of implementation strategy, the most convincing point to be made is that a seismic monitoring system need not require the installation of seismic instruments and the associated commitment to maintenance and hands-on seismology; instead it makes use of publicly available scientific data for rapid post-earthquake assessment.
Informes sobre el tema "Turkish ground motion database"
1
Catlin, Ann Christine y Santiago Pujol. NIST Disaster and Failure Studies Data Repository: The Chile Earthquake Database – Ground Motion and Building Performance Data from the 2010 Chile Earthquake – User Manual. National Institute of Standards and Technology, diciembre de 2015. http://dx.doi.org/10.6028/nist.gcr.15-1008.
Texto completo