Soil motion computations by characteristics method

Streeter, Victor L.; Wylie, E. Benjamin; Richart, F. E.

doi:10.1016/0148-9062(74)91815-4

Cited by 18 publications

(26 citation statements)

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“…In the latter case, the pore pressure generation and dissipation during the earthquake are directly taken into account in the formulation. Some of the more common computer programs for nonlinear site response analysis in the time domain include CHARSOIL (Streeter et al, 1974), DESRA (Finn et al, 1976) or DESRA-2C (Lee and Finn, 1978), MASH (Martin and Seed, 1978), LASS-IV (Dikmen and Ghaboussi, 1984), SUMDES (Li et al, 1992) and CICLIC1D . With a few exceptions (e.g.…”

Section: Introductionmentioning

confidence: 99%

Factors affecting seismic response of submarine slopes

Biscontin

Pestana

2006

Nat. Hazards Earth Syst. Sci.

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Abstract. The response of submerged slopes on the continental shelf to seismic or storm loading has become an important element in the risk assessment for offshore structures and "local" tsunami hazards worldwide. The geological profile of these slopes typically includes normally consolidated to lightly overconsolidated soft cohesive soils with layer thickness ranging from a few meters to hundreds of meters. The factor of safety obtained from pseudo-static analyses is not always a useful measure for evaluating the slope response, since values less than one do not necessarily imply slope failure with large movements of the soil mass.This paper addresses the relative importance of different factors affecting the response of submerged slopes during seismic loading. The analyses use a dynamic finite element code which includes a constitutive law describing the anisotropic stress-strain-strength behavior of normally consolidated to lightly overconsolidated clays. The model also incorporates anisotropic hardening to describe the effect of different shear strain and stress histories as well as bounding surface principles to provide realistic descriptions of the accumulation of the plastic strains and excess pore pressure during successive loading cycles. The paper presents results from parametric site response analyses on slope geometry and layering, soil material parameters, and input ground motion characteristics. The predicted maximum shear strains, permanent deformations, displacement time histories and maximum excess pore pressure development provide insight of slope performance during a seismic event.

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Section: Introductionmentioning

confidence: 99%

Factors affecting seismic response of submarine slopes

Biscontin

Pestana

2006

Nat. Hazards Earth Syst. Sci.

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“…These canonical equations are solved along the characteristic hnes. Streeter et al (1974) appHed the characteristics method to study the wave propagation in a layered soil due to earthquakes. Streeter et al presented equation (2.23) in a form…”

Section: 3 Solutions By the Methods Of Characteristicsmentioning

confidence: 99%

“…Streeter et al (1974) present various examples including the hquefaction of an earth dam. r is an inertia multipher.…”

Section: 3 Solutions By the Methods Of Characteristicsmentioning

confidence: 99%

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Chapter 5 Propagation of waves in porous media

Çorapçıoplu

Tuncay

1996

Advances in Porous Media

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Wave propagation in porous media is of interest in various diversified areas of science and engineer ing. The theory of the phenomenon has been studied extensively in soil mechanics, seismology, acoustics, earthquake engineering, ocean engineering, geophysics, and many other disciplines. This review presents a general survey of the Hterature within the context of porous media mechanics. Following a review of the Biot's theory of wave propagation in Unear, elastic, fluid saturated porous media which has been the basis of many analyses, we present various analytical and numerical solutions obtained by several researchers. Biot found that there are two dilatational waves and one rotational wave in a saturated porous medium. It has been noted that the second kind of dilatational wave is highly attenuated and is associated with a diffusion type process. The influence of couphng between two phases has a decreasing effect on the first kind wave and an increasing effect on the second wave. Procedures to predict the hquefaction of soils due to earthquakes have been reviewed in detail. Extension of Biot's theory to unsaturated soils has been discussed, and it was noted that, in general, equations developed for saturated media were employed for unsaturated media by replacing the density and compressibility terms with modified values for a water-air mixture. Various approaches to determine the permeabihty of porous media from attenuation of dilatational waves have been described in detail. Since the prediction of acoustic wave speeds and attenuations in marine sediments has been extensively studied in geophysics, these studies have been reviewed along with the studies on dissipation of water waves at ocean bottoms. The mixture theory which has been employed by various researchers in continuum mechanics is also discussed within the context of this review. Then, we present an alternative approach to obtain governing equations of wave propagation in porous media from macro scopic balance equations. Finally, we present an analysis of wave propagation in fractured porous media saturated by two immiscible fluids.

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“…G max and τ max can be obtained from measurement, computation, or from empirical correlations. Some models using the principle of unloading-reloading, as quoted by Kramer [1], are the Ramberg-Osgood model (studied by Streeter, et al [6]), the hyperbolic model (studied by Lee and Finn [5]), the Martin-Davidenkov model (studied by Martin and Seed [7]), the Iwan type model (studied by Jyner [8]) and the HDCP model (Hardin-Drnevich-Cundall-Pyke, studied by Pyke [9]). …”

Section: The Nonlinear Soil Modelmentioning

confidence: 99%

An Overview of Soil Models for Earthquake Response Analysis

Yunita

Hendriyawan

Apriadi

2015

J. Eng. Technol. Sci.

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Abstract. Earthquakes can damage thousands of buildings and infrastructure as well as cause the loss of thousands of lives. During an earthquake, the damage to buildings is mostly caused by the effect of local soil conditions. Depending on the soil type, the earthquake waves propagating from the epicenter to the ground surface will result in various behaviors of the soil. Several studies have been conducted to accurately obtain the soil response during an earthquake. The soil model used must be able to characterize the stress-strain behavior of the soil during the earthquake. This paper compares equivalent linear and nonlinear soil model responses. Analysis was performed on two soil types, Site Class D and Site Class E. An equivalent linear soil model leads to a constant value of shear modulus, while in a nonlinear soil model, the shear modulus changes constantly, depending on the stress level, and shows inelastic behavior. The results from a comparison of both soil models are displayed in the form of maximum acceleration profiles and stress-strain curves.

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Soil motion computations by characteristics method

Cited by 18 publications

References 0 publications

Factors affecting seismic response of submarine slopes

Factors affecting seismic response of submarine slopes

Chapter 5 Propagation of waves in porous media

An Overview of Soil Models for Earthquake Response Analysis

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