Geomechanics and Engineering

Techno-Press (테크노프레스)
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Dynamic behavior of clayey sand over a wide range using dynamic triaxial and resonant column tests

  • Guler, Ersin (Sivrihisar Vocational School, Eskisehir Osmangazi University) ;
  • Afacan, Kamil B. (Department of Civil Engineering, Eskisehir Osmangazi University)
  • Received : 2020.02.11
  • Accepted : 2020.12.31
  • Published : 2021.01.25
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Abstract

Deformations in soils induced by dynamic loads cause damage to the structures above the soil layers. It is important for geotechnical engineering practice that how the soil behaves due to repeated loads and the necessary precautions to be taken accordingly. Turkey is one of the most important seismic regions in Europe and earthquake studies to be conducted in this area are intended to reduce the damage as a result of taking the necessary measures. To determine the properties of soils under dynamic loads, stress-controlled dynamic triaxial and resonant column tests can be performed. In this study, these experiments were implemented in the laboratory on the clayey sand soil samples obtained from Bilecik Söğüt. To evaluate the effects of the confining pressure and rate of loading on the dynamic behavior of soils, samples were dynamically loaded by different rates at varying confining pressures. As a result, the changes in stress-strain properties of soils under dynamic loads were investigated. The alteration in behavior in terms of modulus reduction and damping ratios was obtained to vary a lot with the change of the lateral pressure on soil along with the frequency of the load.

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