Geomechanics and Engineering

  • 제15권2호
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  • Pages.783-791
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  • 2018
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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

Prediction models of the shear modulus of normal or frozen soil-rock mixtures

  • Zhou, Zhong (School of Civil Engineering, Central South University) ;
  • Yang, Hao (School of Civil Engineering, Central South University) ;
  • Xing, Kai (School of Civil Engineering, Central South University) ;
  • Gao, Wenyuan (School of Civil Engineering, Central South University)
  • 투고 : 2017.04.08
  • 심사 : 2017.12.23
  • 발행 : 2018.06.10
⟨ 이전 논문 다음 논문 ⟩

초록

In consideration of the mesoscopic structure of soil-rock mixtures in which the rock aggregates are wrapped by soil at normal temperatures, a two-layer embedded model of single-inclusion composite material was built to calculate the shear modulus of soil-rock mixtures. At a freezing temperature, an interface ice interlayer was placed between the soil and rock interface in the mesoscopic structure of the soil-rock mixtures. Considering that, a three-layer embedded model of double-inclusion composite materials and a multi-step multiphase micromechanics model were then built to calculate the shear modulus of the frozen soil-rock mixtures. Given the effect of pore structure of soil-rock mixtures at normal temperatures, its shear modulus was also calculated by using of the three-layer embedded model. Experimental comparison showed that compared with the two-layer embedded model, the effect predicted by the three-layer embedded model of the soil-rock mixtures was better. The shear modulus of the soil-rock mixtures gradually increased with the increase in rock regardless of temperature, and the increment rate of the shear modulus increased rapidly particularly when the rock content ranged from 50% to 70%. The shear modulus of the frozen soil-rock mixtures was nearly 3.7 times higher than that of the soil-rock mixtures at a normal temperature.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Central South University, Tongji University

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피인용 문헌

  1. Damage mechanism of soil-rock mixture after freeze-thaw cycles vol.26, pp.1, 2018, https://doi.org/10.1007/s11771-019-3979-9
  2. Orthogonal experimental study of soil-rock mixtures under the freeze-thaw cycle environment vol.22, pp.11, 2018, https://doi.org/10.1080/10298436.2019.1686634