Cyclic resistance and liquefaction behavior of silt and sandy silt soils

Takch, Ali El; Sadrekarimi, Abouzar; Naggar, Hesham El

doi:10.1016/j.soildyn.2016.01.004

Cited by 46 publications

(19 citation statements)

References 71 publications

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“…But due to characteristics of soil during loading, unloading, and reloading process, and change compression loading to tensile loading in very short times, the crack on soil due to tensile loading and fatigue of soil cannot be explained same as which is presented in the literature, about crack and fatigue on metal [19][20][21]. e failure pattern and shear resistance of soil have been discussed using mathematical modeling techniques and numerical simulation [22][23][24][25][26][27], and the bearing capacity and effective stress have been changing with respect to soil foundation displacement.…”

Section: Numerical Analysis Discussion and Verification Of The Resultsmentioning

confidence: 99%

Seismic Resistance and Displacement Mechanism of the Concrete Footing

Namdar

Dong

2019

Shock and Vibration

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A realistic seismic simulation of the concrete footing has been made by using finite element method (FEM) software called ABAQUS. The effect of concrete footing embedment in soil on concrete footing-soil foundation interaction has numerically been simulated for considering displacement, stress, strain, and seismic acceleration load response at the base of a concrete footing. The results showed that the height of embedded concrete footing in soil foundation controls (i) mechanism and magnitude of lateral, vertical, and differential displacements of the concrete footing, (ii) strain energy, the acceleration load response, and stress paths, and (iii) concrete footing-soil foundation interaction. Compared with various theoretical and experimental results reported in the literature, the present study provides realistic seismic behavior of concrete footing-soil foundation interaction.

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Section: Numerical Analysis Discussion and Verification Of The Resultsmentioning

confidence: 99%

Seismic Resistance and Displacement Mechanism of the Concrete Footing

Namdar

Dong

2019

Shock and Vibration

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“…In general, seismic waves propagate in the form of shear and compressional waves, which depends on the vibrating direction of the substrate bedrock. The behavior of external cyclic shearing of saturated soil have been confirmed experimentally by dozens of independent laboratories [17][18][19]. Most of these tests have simulated the liquefaction triggered by shear waves, revealing that the build-up of excess pore pressure in the response could reduce the effective stresses and subsequently the shearing resistance of the soil skeleton.…”

Section: Introductionmentioning

confidence: 88%

Momentary liquefaction of porous seabed under vertical seismic action

Chen

Jeng

Chen

et al. 2018

Applied Ocean Research

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The evaluation of potential liquefaction is an important part in the design of marine structures and offshore installations. However, the liquefaction phenomenon of porous seabed under the action of strong earthquake is traditionally been ignored. This paper aims to explore the momentary liquefaction mechanism of porous seabed through the newly analytical solutions of seabed response induced by vertical seismic excitation. Based on the boundary conditions at the surface and bottom of the seabed, the induced displacements and pore pressure in the sediment are rigorously derived as a function of seawater depth, seabed parameters and seismic characteristics of bedrock. A criterion of earthquake liquefaction in the seabed is developed, employing the concept of induced excess pore pressure. The representative cohesionless marine soils with different properties are selected in the parametric analysis. The results show that the liquefaction of seabed could be influenced by seawater parameters, seabed parameters and earthquake ground motion parameters. The significant finding is that current understanding that the vertical motion effect on soil liquefaction is negligible may not always hold true.

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“…The grain structure arrangement remains the most influence factors that influenced the stress-strain behaviour of the sample prepared [22]. Various techniques such as moist tamping, dry or moist pluviation, air pluviation and dry funnel deposition on sample preparations of sandy soil on triaxial test to measure soil behaviour have been presented by previous researchers (examples; [23]; [24]; [22]; [5]; [25]). Moist or wet tamping technique is the most popular technique applied for sample preparation as used by past researchers such as [26]; [27]; [28]; [29].…”

Section: Table 1 Sand and Kaolin Composition In Sand Mixturesmentioning

confidence: 99%

“…Moist or wet tamping technique is the most popular technique applied for sample preparation as used by past researchers such as [26]; [27]; [28]; [29]. Through this technique, the homogeneous of the sample can be produced ( [17]; [25]; [30]). Due to that, moist tamping with 5 % moisture content was applied to each samples of sand matrix soils in this study.…”

Section: Table 1 Sand and Kaolin Composition In Sand Mixturesmentioning

confidence: 99%

Influence of Grain Sizes on Undrained Strength of Sand Mixtures

Othman¹,

Marto²,

Pakir³

et al. 2019

IJITEE

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Sand is known as the main material in land reclamation works to develop and widen an area. It is important for the Geotechnical Engineer to ensure the sand used can accommodate the burden imposed from the structures to be built on it. Previous researchers have conducted studies on the strength of sand, whether focusing on the sand itself or with the presence of fines. However, the study of sand grain size effects in sand mixtures in affecting sand behavior is extremely limited. The sizes and angularity of the sand particle are believed to contribute to the behavior of sand mixtures soil. Hence, the study to investigate the effect of sand grain size on sand mixtures in term of undrained strength is being carried out. The sand was sieved to coarse sand, medium sand and fine sand then each size was mixed with kaolin at 0 %, 20 % and 40 %. The undrained strength was obtained from triaxial test on undrained condition. As a result, it is found that the maximum deviator stress, qmax increases with the decrease of fines (kaolin) content. On the other hand, at the same fines content, increased of sand size leads to the increased of qmax, which means the increased of undrained shear strength. In addition, the angular shape of sand particle was thought to contribute to the high value of undrained shear strength for the sand mixtures.

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Cyclic resistance and liquefaction behavior of silt and sandy silt soils

Cited by 46 publications

References 71 publications

Seismic Resistance and Displacement Mechanism of the Concrete Footing

Seismic Resistance and Displacement Mechanism of the Concrete Footing

Momentary liquefaction of porous seabed under vertical seismic action

Influence of Grain Sizes on Undrained Strength of Sand Mixtures

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