›› 2018, Vol. 39 ›› Issue (10): 3661-3667.doi: 10.16285/j.rsm.2017.0214

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Application of gradation equation for coarse-grained soil

GUO Wan-li1, 2, ZHU Jun-gao1, 2, YU Ting3, JIN Wei3   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 2. Jiangsu Research Center for Geotechnical Engineering Technology, Hohai University, Nanjing, Jiangsu, 210098, China; 3. Chengdu Survey and Design Institute Limited, China Power Construction Group, Chengdu, Sichuan 610072, China
  • Received:2017-04-05 Online:2018-10-11 Published:2018-11-04
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (51479052), the Innovative Research Team of the Ministry of Education (IRT_15R17) and the Open Foundation of Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-Rock Dam of the Ministry of Water Resources (YK915001).

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Abstract: The properties of the coarse-grained soil are significantly affected by its gradation. The gradation of the soil is usually descripted by the particle size distribution curve (PSD), and the gradation equation is a quantitative description for the PSD. A continuous gradation equation was developed in this paper, and its applicability was verified by many PSDs of the rockfill material, transition material and filter material used in earth-rock dams. Furthermore, the range of gradation parameters of the coarse-grained soil was summarized, and the applicability of the gradation equation was analyzed. The main conclusions are as follows: The commonly used gradation parameters of coarse-grained soils are in the range of -2

Key words: gradation equation, coarse-grained soil, earth-rock dam, reduced scale, calculation of ingredients

CLC Number: 

  • TU 432
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