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Volume 41 Issue S1
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ZHAO Fu-tang, CHANG Li-jun, ZHANG Wu-yu. Experimental study on dynamic strength parameters of subgrade saline soil under temperature variation[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S1): 217-220. DOI: 10.11779/CJGE2019S1055
Citation: ZHAO Fu-tang, CHANG Li-jun, ZHANG Wu-yu. Experimental study on dynamic strength parameters of subgrade saline soil under temperature variation[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S1): 217-220. DOI: 10.11779/CJGE2019S1055
shu

Experimental study on dynamic strength parameters of subgrade saline soil under temperature variation

  • School of Civil Engineering, Qinghai University, Xining 810016, China

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  • Received Date: April 27, 2019
  • Published Date: July 14, 2019
    Graphical Abstract
    • Abstract
  • Based on the British GDS dynamic triaxial test instrument, the triaxial dynamic load tests on subgrade saline soil in western areas of Qinghai Province are performed. Under temperature change, the variation laws of parameters of dynamic stress of failure, dynamic cohesion and dynamic internal friction angle with confining pressure and frequency are discussed. The destructive dynamic stress-confining pressure-temperature relational surface at different dynamic load frequencies is established, and the equation for fitting the surface with temperature is obtained. The test results show that the temperature change is extremely sensitive to the cementation of soil-ice-salt, and with the decrease of temperature, the destructive dynamic stress of saline soil obviously increases. The dynamic cohesion and internal friction angle increase with the decrease of temperature.
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    • References (11)
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