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KONG Ling-wei, XIONG Chun-fa, GUO Ai-guo, YANG Ai-wu. Effects of shear rate on strength properties and pile-soil interface of marine soft clay[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(z2): 13-16. DOI: 10.11779/CJGE2017S2004
Citation: KONG Ling-wei, XIONG Chun-fa, GUO Ai-guo, YANG Ai-wu. Effects of shear rate on strength properties and pile-soil interface of marine soft clay[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(z2): 13-16. DOI: 10.11779/CJGE2017S2004

Effects of shear rate on strength properties and pile-soil interface of marine soft clay

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  • Received Date: August 01, 2017
  • Published Date: December 19, 2017
  • The CU triaxial tests and ring shear tests on interface between steel pipe pile and soil of a kind of intact marine soft clay with medium structure are carried out under influence of shear strain rate, and the variations of strength properties and pile-soil interface properties of the tested soil with shear strain rate are analyzed. Moreover, simulation tests on the reconsolidated soft clay around the pile after shearing are also conducted to analyze the strength behaviors of pile-soil interface. The results show that the shear strength and internal friction angle of the tested soil increase with the increasing shear strain rate monotonously, while the variation characteristics of the cohesion are opposite. Under the undrained condition, it is also found that the peak shear strength and internal friction angle of the pile-soil interface increase with the increasing shear strain rate, and the strain softening phenomenon becomes more obvious, however, the corresponding variations of residual shear strength and internal friction angle are very small. Although the peak shear strength of reconsolidated soil around the pile after large shear deformation tends to decrease, the residual shear strength increases, which shows the strength recovery characteristics of pile-soil interface.
  • [1]
    朱启银, 尹振宇, 朱俊高, 等. 软黏土加载速率效应特性试验研究:进展与趋势[J]. 岩土力学, 2014, 35(1): 7-24. (ZHU Qi-yin, YIN Zhen-yu, ZHU Jun-gao, et al. Progress and trend of experimental investigation on rate-dependent behavior of soft clays[J]. Rock and Soil Mechanics, 2014, 35(1): 7-24. (in Chinese))
    [2]
    陈铁林, 周 成, 沈珠江. 结构性黏土压缩和剪切特性试验研究[J]. 岩土工程学报, 2004, 26(1): 31-35.(CHEN Tie-lin, ZHOU Cheng, SHEN Zhu-jiang. Compression and shear test of structured clay[J]. Chinese Journal of Geotechnical Engineering, 2004, 26(1): 31-35. (in Chinese))
    [3]
    蔡 羽, 孔令伟, 郭爱国, 等. 剪应变率对湛江强结构性黏土力学性状的影响[J]. 岩土力学, 2006, 27(8): 1235-1240. (CAI Yu, KONG Ling-wei, GUO Ai-guo, et al. Effects of shear strain rate on mechanical behavior of Zhanjiang strong structured clay[J]. Rock and Soil Mechanics, 2006, 27(8): 1235-1240. (in Chinese))
    [4]
    熊春发. 不同加荷模式下软黏土的力学响应与结构损伤特征[D]. 武汉: 中国科学院武汉岩土力学研究所, 2013. (XIONG Chun-fa. Characteristic of mechanical response and structural damage of soft clay under different loading mode[D]. Wuhan: Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 2013. (in Chinese))
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