Stiffness degradation of natural fine grained soils during cyclic loading

Okur, Volkan; Ansal, Atilla

doi:10.1016/j.soildyn.2007.01.005

Cited by 139 publications

(60 citation statements)

References 23 publications

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“…In addition, V s was computed [represented as V s(Estm) ] by employing Eqs. (1) and (2) and other relationships proposed by the earlier researchers (Hardin and Black, 1968;Hardin and Drnevich, 1972;Hardin, 1978;Wang and Kuwano, 1999;Okur and Ansal, 2007), as depicted in Fig. 11.…”

Section: Interpretation Of Test Results and Discussionsupporting

confidence: 52%

“…2, has been reported in the literature (Hardin and Black, 1968;Hardin and Drnevich, 1972;Hardin, 1978;Wang and Kuwano, 1999;Okur and Ansal, 2007).…”

Section: Interpretation Of Test Results and Discussionmentioning

confidence: 76%

“…(2) can be used for predicting V s in clays. The value of CR obtained by employing the relationships proposed by Wang and Kuwano (1999) and Okur and Ansal (2007) is 1.5, whereas it is 2.0 for the relationships proposed by Hardin and Black (1968), Hardin andDrnevich (1972) andHardin (1978). The value of CR for Eq.…”

Section: Interpretation Of Test Results and Discussionmentioning

confidence: 82%

“…Although, the value of CR is different, a reasonably good R 2 value (≈ 0.90) for these relationships has been obtained. As suggested in the literature (Okur and Ansal, 2007), this discrepancy in CR can be attributed to different methodologies (viz., resonant column, cyclic triaxial, bender element test) adopted by different researchers. Fig.…”

Section: Interpretation Of Test Results and Discussionmentioning

confidence: 84%

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Application of shear wave velocity for characterizing clays from coastal regions

2010

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Demand for infrastructure development in coastal regions where the subsurface is often composed of soft clays, results from the desire for rapid industrialization. The frequently encountered coastal soil conditions often call for suitable ground improvement and modification techniques to prepare soft deposits for foundation construction. For appropriate site improvement, several engineering soil properties are desired which require expensive and time consuming field and laboratory testing. Under such circumstances, empirical correlations based on routinely determined soil properties would be very useful and economical in planning of the project. With this as a goal, undisturbed samples from three on-shore and off-shore sites of the coastal regions in India, where major infrastructure projects are being executed, were collected. These samples were tested for physical, chemical, mineralogical and geotechnical characteristics. In addition, shear wave velocity of specimens of these soils was determined by using bender elements. Based on this data, empirical correlations between void ratio, compression index and undrained shear strength with shear wave velocity of clays were developed. Because shear wave velocity can be easily determined in the laboratory, these correlations are found to be valuable for preliminary planning of the project. The utility of these correlations for preliminary characterization of the soft soil has also been demonstrated.

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Section: Interpretation Of Test Results and Discussionsupporting

confidence: 52%

“…2, has been reported in the literature (Hardin and Black, 1968;Hardin and Drnevich, 1972;Hardin, 1978;Wang and Kuwano, 1999;Okur and Ansal, 2007).…”

Section: Interpretation Of Test Results and Discussionmentioning

confidence: 76%

Section: Interpretation Of Test Results and Discussionmentioning

confidence: 82%

Section: Interpretation Of Test Results and Discussionmentioning

confidence: 84%

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Application of shear wave velocity for characterizing clays from coastal regions

2010

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“…The shear modulus and damping ratio respectively represent the soil effective stiffness and dissipation of energy within the soil. These parameters are the key characteristics of the strain-stress curves (hysteresis loops) of soils under cyclic loading (Zhang et al, 2005;Okura and Ansal, 2007). The previous researches show that the response of soils to cyclic loading is very dependent on the range of applied shear strain.…”

Section: Introductionmentioning

confidence: 99%