Geomechanics and Engineering

  • 제20권2호
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  • Pages.121-129
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  • 2020
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Selection of design friction angle: a strain based empirical method for coarse grained soils

  • Sancak, Emirhan (Department of Civil Engineering, Faculty of Engineering, Bogazici University) ;
  • Cinicioglu, Ozer (Department of Civil Engineering, Faculty of Engineering, Bogazici University)
  • 투고 : 2019.09.20
  • 심사 : 2020.01.04
  • 발행 : 2020.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

In the design of geotechnical structures, engineers choose either peak or critical state friction angles. Unfortunately, this selection is based on engineer's preference for economy or safety and lacks the assessment of the expected level of deformation. To fill this gap in the design process, this study proposes a strain based empirical method. Proposed method is founded on the experimentally supported assumption that higher dilatancy angles result in more brittle soil response. Using numerous triaxial test data on ten different soils, an empirical design chart is developed that allows the estimation of shear strain at failure based on soil's peak dilatancy angle and mean grain diameter. Developed empirical chart is verified by conducting a small scale retaining wall physical model test. Finally, a design methodology is proposed that makes the selection of design friction angle in structured way possible based on the serviceability limits of the proposed structure.

키워드

과제정보

연구 과제 주관 기관 : The Scientific and Research Council of Turkey (TUBITAK)

The authors would like to thank The Scientific and Research Council of Turkey (TUBITAK) for supporting this study with Project number 114M329.

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피인용 문헌

  1. Structural Behavior of Prefabricated Ecological Grid Retaining Walls and Application in a Highway in China vol.13, pp.5, 2020, https://doi.org/10.3390/sym13050746