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Showing 1 to 20 of 21 for “"FLAC"”.
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MECHANICAL AND HYDRAULIC CHARACTERIZATION OF PLASTIC CONCRETE
… of strain levels and confining pressures. A FLAC (Fast Lagrangian Analysis of Continua) finite difference analysis was also performed to evaluate the working strains in plastic concrete walls during the construction and impoundment (i.e. rising of the reservoir) of an embankment dam. The FLAC …
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A Numerical Investigation of the Seismic Response of the Aggregate Pier Foundation System
… history. Comprehensive numerical modeling using FLAC were performed. The focus of the study in this research was divided into three parts: the studies of the ground acceleration, the excess pore water pressure ratio and the shear stress in soil matrix generated during seismic loading. Two …
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Kopírování hudebních CD
… lze spustit externí kompresor (LAME, APE nebo FLAC), ke kterému může uživatel specifikovat parametry příkazové řádky. Program se umí připojit jak k lokální, tak i ke vzdálené freedb databázi. Obsahuje editor ID3 tagů, funkce pro rychlé tagování, přejmenování souboru dle jeho tagu či yytvoření …
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Estudio de la cimentación de cajones portuarios sobre banquetas de escollera
… los obtenidos mediante los programas comerciales FLAC (diferencias finitas) y SLOPE (equilibrio límite). Para evaluar la seguridad de la cimentación se propone un coeficiente de seguridad único de fallo del cimiento.
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Ground Improvement for Liquefaction Mitigation at Existing Highway Bridges
… using the finite difference computer program FLAC provided better predictions of treated ground performance. These two-dimensional, dynamic analyses based on effective stresses incorporated pore pressure generation, non-linear stress-strain behavior, strength reduction, and groundwater flow. …
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Numerical Modeling for Increased Understanding of the Behavior and Performance of Coal Mine Stoppings
… CMU block was observed and simulated using FLAC. Full-scale stoppings were then tested in the Mine Roof Simulator and modeled using UDEC. Through a combination of physical testing and numerical modeling a failure mechanism for concrete block stoppings was established. This failure mechanism …
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Seismic performance of single-propped retaining walls
… excitations using the finite difference software FLAC v7.0 (Itasca). The structure comprises two reinforced concrete diaphragm walls connected by a row of cross-lot struts that is used to support a 9.5m deep, 18m wide excavation in dry sand. After simulating the excavation as a staged …
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Numerical Analysis of RAP Elements under Dynamic Loading
… (FD) numerical model is developed in a FLAC platform and a coupled analysis using the Finn model with Byrne (1991) formulation is conducted. The FD model calibrated for top-down shakings similar to the vibroseis tests succeeded in qualitatively reproducing the general observed behavior …
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Two-Dimensional Analysis of Four Types of Water-Filled Geomembrane Tubes as Temporary Flood-Fighting Devices
… with the explicit finite difference program FLAC. The tube is numerically modeled with beam elements. The predicted contact regions are modeled with interface elements. The Mohr-Coulomb constitutive model is used for the soil. Water inside and outside of the tube is modeled as hydrostatic …
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Investigation of Elastic Parameters and Pavement Modeling With Eps Geofoam
… an EPS geofoam layer under traffic loading. FLAC, SIGMA/W, and KENLAYER models with higher EPS Young's modulus and Poisson's ratio values resulted in better agreement with field observations and realistic service life predictions. Alternative tests and sensing systems utilized in this …
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A New Rock Bolt Design Criterion and Knowlwdge-based Expert System for Stratified Roof
… stability of an opening was investigated using FLAC model. Four statistical models for predicting optimum bolt supports using a minimum solid beam thickness were established, and based on these results, a design criterion was proposed. To meet support needs in various geological and geotechnical …
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Application of Caquot's solution to the analysis of stability of shallow circular cavities in Tresca material
… with the commercial finite difference software FLAC, a program that is widely used in the practical design of underground structures. All this suggests that the extended Caquot's solution presented in this thesis could be a valuable tool for practical evaluation of stability conditions of …
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Two-Dimensional Analysis of Water-Filled Geomembrane Tubes Used as Temporary Flood-Fighting Devices
… sand foundations. A finite difference program, FLAC, is used in the numerical analyses. The tube is assumed to be infinitely long, and it is modeled two-dimensionally. Beam elements are used to model the tube. The tube is inflated with water. The hydrostatic pressure in the tube is converted to …
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Análisis, modelización e implementación Numérica del comportamiento de suelos Blandos ante la combinación de tensiones Tangenciales estáticas y cíclicas
… en el programa de análisis geotécnico FLAC. ABSTRACT The tests of most experimental investigations related to the dynamic behavior of soils, for the study of the distribution of stress beneath the designed structures, have been performed without applying different configurations of …
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Pipe-Soil Interaction on a Clay Seabed
… techniques based on the finite difference code FLAC to investigate a range of problem definitions. These problem definitions include pipelines subject to both vertical loading (V) and combined vertical and horizontal (V-H) loading. Factors such as variation in interface conditions, large strain …
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Stability of Levees and Floodwalls Supported by Deep-Mixed Shear Walls: Five Case Studies in the New Orleans Area
… were performed for the case studies using the FLAC computer program. The key findings and conclusions for the individual case studies were assessed and integrated into general conclusions about design of deep-mixing support for levees and floodwalls. One of the significant findings from this …
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Effect of Confinement and Temperature on the Behavior of EPS Geofoam
… were made to actual field observations and FLAC model results. Strains and induced stresses from seasonal temperature variations were relatively small.</p>
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Numerical Analysis on Seismic Response of Cantilever Retaining Wall Systems and Fragility Analysis on Motion Response
In this investigation, seismic response of retaining walls constructed with cohesive and cohesionless backfill materials was studied. Fully dynamic analysis based on finite difference method was used to evaluate the performance of retaining walls during the earthquake. The analysis response was …
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Mechanical behaviour of Clay-Shales (Argille Scagliose) and implications on the design of tunnels
… criterion (CVISC) as available with the FDM code Flac [Itasca, 1999] was used. The parameters describing the time-dependent response of the specimens (as evidenced during the laboratory tests) were determined by means of closed-from solutions (Burgers’ visco-elastic model) and numerical analyses …
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Response of Pile-Supported T-Walls to Fill Loading and Flood Loading Based on Physical Model Studies and Numerical Analyses
Pile-supported T-walls, which are concrete floodwalls that are shaped like an inverted "T" and supported by batter piles, are commonly used by the United States Army Corps of Engineers (USACE) to protect low-lying portions of New Orleans and other areas. The design of a T-wall in southern Louisiana …
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