2 edition of Blast-induced ground motions found in the catalog.
Blast-induced ground motions
D. C. Gakenheimer
|Statement||[by] D. C. Gakenheimer.|
|LC Classifications||AS36.R3 R-1113, QC157 R-1113|
|The Physical Object|
|Pagination||vii, 83 p.|
|Number of Pages||83|
|LC Control Number||74191281|
• Lower frequency dynamic loading: wind, current, earthquake ground motions – frequency up to a few Hertz • Medium to high frequency dynamic loading: construction vibration; blast-induced ground excitation – Frequency order of 10’s ~ ’s Hz • Shock and impact loading, e.g. due to blast – pulse duration in the. Seismic Signals from Mining Operations and the Comprehensive Test Ban Treaty: Comments on a Draft Report by a Department of Energy Working Group. Washington, DC: The National Academies Press. doi: / ×.
The analysis of complex blast scenarios typically requires advanced computational methods such as multi-material Eulerian and coupled Eulerian–Lagrangian (CEL) analysis where Jones–Wilkins–Lee (JWL) equation of state is used to model the explosive : Anthoni Giam, William Toh, Vincent Beng Chye Tan. The many possible users of the ISC Security Design Criteria will have differing degrees of familiarity with the topics addressed; in general, the audience may require an introduction to the subjects of both blast effects on people and buildings and the technical basis for blast-resistant design. Among those who should benefit from a general.
In addition, this research investigates the induced wave patterns due to an explosion and the near field blast effects and the far field blast effects. Also, the research evaluates the possibilities of simulating earthquake like ground motions using by: 2. “Blast induced damage due to repeated vibrations in jointed gneiss rock formation”, Int. Journal of Geotechnical Earthquake Engineering, IGI publications, 1(1), 72 Samui P. and Sitharam T.G. (). “Applicability of statistical learning algorithms for spatial variability of rock depth”, Mathematical Geology, 42(4), (IF.
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Spatial variation of blast induced ground motions becomes more significant in order to more accurately assess its effects on structures which are not large unlike strong ground motions caused by.
Blast induced ground motions which may cause liquefaction are categorized on the basis of wave form characteristics and motion types and compared to earthquake groundmotions. Prediction methods used in Russia, Europe and North America are reviewed. Get this from a library. Blast-induced ground motions: the surface wave and horizontal displacements.
[D C Gakenheimer; Rand Corporation.; Project Rand (United States. Air Force)]. This causes significant spatial variations in blast-induced ground motions. The effects of seismic ground motion spatial variations on structural responses have been intensively investigated recently.
Response of a frame structure with two supports to blast-induced spatially varying ground excitations was also studied. Those studies Cited by: The net blast induced ground motion consists of air-induced and direct-induced ground motions.
Acceleration time histories of blast induced ground motions are obtained depending on a deterministic. Four types of ground motions are considered with the principal frequency ω g varying from to Hz. The parameters used in the ground motion modelling are given in Table e the primary interests here is to find the relative contributions of various vibration modes, all the input motions are normalized to PPV=20 cm/s, which makes the yielding of the RC material very by: The same transducers that monitor long term, climatologically induced micro-inch crack response also measure dynamic responses induced by blast-induced ground motions, occupant activities, and wind gusts.
The two-story house has been expanded several times, is founded on an irregular basement, framed in wood and clad with wood siding and clapboard. Read "Characteristics of surface ground motions induced by blasts in jointed rock mass, Soil Dynamics and Earthquake Engineering" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
T1 - Importance of ground strain in predicting blast-induced strain and stress in pipelines. AU - Dowding, Charles. AU - Akkaya, U.
PY - /6/ Y1 - /6/ N2 - This paper compares measured ground motions and strains in welded, steel pipelines, which were induced by blasting at Cited by: 1.
The energy of scaled ground motions developed from velocity measurements are used to relate the observed soil response to blasting to that expected from earthquake-induced ground motions. The paper concludes with a comparison of shear strains expected from shear strain compatibility (SSC) between the improved ground and the displacement piles.
The blasting operation is vital in the construction of tunnels and channels or in mining when encountering hard geological environments to facilitate the progress of a project. The level and range of damage due to the blast are affected by the energy of shock waves generated after explosion.
The control of seismic damage is a major issue in blasting engineering and cannot be by: 2. To this end, the magnitudes of blast-induced ground motions at a coal mine have been found to be predicatable and can reach very large values. An approach has been developed to investigate whether the strong ground motions recorded at this coal mine can be used to evaluate the basemat uplift by: 1.
Saha and V. Matsagar, "Performance of Base-Isolated Buildings Subjected to Earthquake and Blast-Induced Ground Motions ", 8 th National Frontiers of Engineering (NatFOE - 8) Conference, Gandhinagar, India, September 5 - 6, Response of a residential structure to ground motions generated by large, surface coal mine blasts can provide information regarding the cracking Author: C.
Dowding, J. Meissner. Since the direct-induced ground shock does not arrive until the air blast has passed, the two ground shock components can be considered independently AIR-BLAST-INDUCED GROUND SHOCK Vertical Motions Displacement D„ p c 1, x 1 x 10” 6 m (’ Velocity x x 25,1, x 4 x 10" 5 in.) 31 x.
Welcome to the OA Earth-prints Repository. Earth-Prints is an open archive created and maintained by Istituto Nazionale di Geofisica e digital collection allows users to browse, search and access manuscripts, journal articles, theses, conference materials, books, book-chapters, web by: This comprehensive text covers the entire field of construction-induced vibrations, including the latest advances in earthquake engineering and nuclear blast protective design as well as construction and mine blasting.
Frequency of vibration and strain form the foundation for the presentation of the material. The book also defines the major regulatory issues faced by those responsible for. An ANN approach based on this bilevel optimization was successfully applied on a database of samples obtained from underground blast-induced ground vibration monitoring in a granitic rock mass.
A residual analysis of the best-fitted model is Author: Gustavo Paneiro, Fernando O. Durão, Matilde Costa e Silva, Pedro A. Bernardo. Response of the drywall joint D1 to ground motions is small and barely out of noise level.
Dynamic response time histories of crack response to both blast induced effects and occupant activ-ity are shown in Figure NFII This figure presents dynamic responses for the kitchen- garage door frame interface crack and the corner crack respectively.
Blast induced crack responses are compared to long-term environmental effects and occupant in-duced activities in Figure SY Long-term response is at least an order of magnitude larger than any of the dynamic responses, even those produced by ground motions as high as ips (mm/s). This study is an assessment of the ground shock which may be generated in the event of an accidental explosion at J5 or the Proposed Large Altitude Rocket Cell (LARC) at the Arnold Engineering Development Center (AEDC).
The assessment is accomplished by reviewing existing empirical relationships for predicting ground motion from ground shock.Ground vibration induced by blasting operations is an important undesirable effect in surface mines and has significant environmental impacts on surrounding areas.
Therefore, the precise prediction of blast-induced ground vibration is a challenging task for engineers and for managers. To view the rest of this content please follow the download PDF link above.