Download or read book Response Characteristics and Stability of Earth Dams During Strong Earthquakes written by S. K. Sarma and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response characteristics and stability of earth dams during earthquakes written by Sarada Kanta Sarma and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response and Stability of Earth Dams During Strong Earthquakes written by S. K. Sarma and published by . This book was released on 1979 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response and Stability of Earth Dams During Strong Earthquakes written by S. K. Sarma and published by . This book was released on 1979 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This earth dam study considers the response of an earth dam resting on a layer underlain by a rigid base and subjected to a strong ground motion. The dam and the layer are assumed to be elastic, homogeneous, and of simple geometric form. The properties of the dam and the layer may be different. Several combinations of the properties of the dam and the layer, as well as several ratios of the height of the dam to the depth of the layer, are studied. All of these are subjected to nine strong motion acceleration recrods, and their response is calculated. At the same time, seismic coefficients for various sizes of sliding wedges are computed. The results of individual cases and their envelopes are presented in the spectral form for design purposes. Methods of stability analysis for static and pseudostatic conditions are examined, and two new methods are presented. One of these methods is suitable for analyzing existing slip surfaces, and the other for quick computation of the critical acceleration for a given surface. Since pore water pressure developed in the dam during an earthquake is an important factor, a method of stability analysis is developed that takes the excess dynamic pore water pressure into account. The method is based on limit equilibrium principle. Pore water pressures are introduced in the form of dynamic parameter A sub n. The result is obtained in the form of a critical acceleration required to cause failure as a function of the number of cycles of earthquake load.

Download or read book Response and Stability of Earth Dams During a Strong Earthquake written by S. K. Sarma and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geotechnical Earthquake Engineering written by S. K. Sarma and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Comprehensive Seismic Response and Slope Stability Analysis Framework for Evaluating the Stability of Hydraulic fill Dams written by Sayantan Chakraborty (Ph.D.) and published by . This book was released on 2020 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The stability and serviceability of earthen embankment structures such as dams and levees are extremely crucial to avoid the catastrophic consequences of the failure of these structures. Such man-made geo-structures are usually stable under normal working conditions; however, the stability and subsequent functionality may be affected during earthquake events. Hence, the evaluation of seismic response and structural stability of earthen dams is an important facet in the field of geotechnical earthquake engineering. Dams and levees built in earthquake-prone regions are usually designed to withstand expected seismic events, and in-depth time-history based dynamic analyses are typically performed to assess the behavior of these structures during earthquakes. However, earthen dams located in regions of newly declared induced-seismicity, like Texas, may not have been specifically designed to withstand these dynamic excitations. Hence, it is imperative to evaluate the performance of dams and levees located in such zones of induced seismicity. In this study, the stability of the Eagle Mountain dam, an 85-year-old hydraulic-fill dam, located in Fort Worth, Texas, is evaluated. Historical evidence concerning the poor performance of hydraulic-fill dams around the world during earthquake events further necessitates the assessment of seismic stability of the Eagle Mountain dam. Moreover, there is an inherent variability associated with the material properties along the body of the dam due to the hydraulic-fill method of construction that is not often captured in the traditional method of analysis. In this research, a framework is developed to study the seismic response and stability of hydraulic-fill dams incorporating the effect of material variability and induced seismicity. Three-dimensional models of the dam, depicting the variations indifferent shear strength properties, were developed by interpolating the in-situ test results using geostatistics-based kriging analysis. These models along with additional available bore log information were used to assign the material properties to the finite-element models of the dam.In the absence of earthquake time-history data recorded at the dam site, a new natural-frequency-based approach was devised to select the acceleration-time data required for the analysis. A novel method was also developed to determine the strain-dependent natural frequency of the earthen embankment structures. To comprehensively characterize the performance of the dam in the event of probable earthquakes, a broad spectrum of earthquake data having varying peak accelerations and frequency contents were selected. Extensive stability analyses, including static, pseudo-static, Newmark deformation, and dynamic analyses, were performed to identify the critical sections of the dam. A reliability-based pseudostatic analysis and a sensitivity analysis were also performed to gauge the effect of uncertainty associated with the estimation of the strength parameters and small strain shear modulus of subsurface layers, respectively.Results indicate that the dam is safe under static conditions and during earthquakes with peak ground accelerations (PGA) of 0.02g, similar to what the dam has already experienced in the past. Moreover, the dam is expected to be safe during earthquakes with PGA less than 0.09 g, provided that the predominant frequency of the earthquake is not close to the natural frequency of the dam. Some parts of the upstream shell and foundation sand layers, especially near the toe of the dam, may liquefy. However, flow liquefaction of the foundation sand layers is not expected to happen. The middle portion of the dam, from stations 14.5 to 27,were found to be the most critical, based on the results of the pseudo-static and dynamic analyses.

Download or read book Engineering Aspects of Earthquake Phenomena written by A. Koridze and published by . This book was released on 1987 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Response of Earth Dams to Earthquakes written by Geoffrey Robert Martin and published by . This book was released on 1965 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Validation of Dynamic Analyses of Dams and Their Equipment written by Jean-Jacques Fry and published by CRC Press. This book was released on 2018-06-27 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: Validation of Dynamic Analyses of Dams and Their Equipment is the outcome of a three year cooperation program between CFBR (Comite Francais des Barrages et Reservoirs or French Committee on Large dams) and JCOLD (Japan Commission on Large Dams), and focusses on the dynamic behavior of concrete and embankment dams analyzed based on acceleration records of the JCOLD data base. The book covers a broad range of topics, including simplified and detailed methods of dynamic analysis for the seismic response of concrete and embankment dams compared with measured behavior. The response of embankment dams subjected to a 1.0 g foundation acceleration time history is computed by several analytical methods and compared. The modelling of stress-strain behavior of compacted soils for seismic stability analysis of earth-fill dams and its application for a failed earthfill dam is described. The cracking of the face slab of four faced rockfill dams during earthquakes is analyzed. The seismic behavior of concrete arch dams is discussed by the comparison of numerical and experimental results. Displacement-based seismic assessment of concrete dams is presented. Finally the book contains a comparison between the Japanese and French design criteria of gates and a comparison of the analysis of gates and field measurements. Validation of Dynamic Analyses of Dams and Their Equipment will be useful to professional and academics involved or interested in dam engineering.

Download or read book Abstract Journal in Earthquake Engineering written by and published by . This book was released on 1989 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Earthquake Resistant Design of Earth Dams written by Harry Bolton Seed and published by . This book was released on 1967 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1979 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stability Analysis of Earth Dams Against Strong Earthquakes written by Imperial College of Science and Technology and published by . This book was released on 1967 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of the Response of Earth Dams to Earthquakes written by Jagdish Narain Mathur and published by . This book was released on 1969 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Small Earth Dams written by and published by . This book was released on 1988 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: