›› 2016, Vol. 37 ›› Issue (S2): 343-348.doi: 10.16285/j.rsm.2016.S2.043

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Resonant column experimental study of dynamic properties of soft clay foundation with cement soil mixing piles

HU Xiu-qing1,2, 3，, DONG Quan-yang1,2, 3, LÜ Cheng-wei4, WANG Jun1,2, 3, ZHUANG Xin-shan4   

  1. 1. College of Architecture and Civil Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China; 2. Key Laboratory of Engineering and Technology for Soft Soil Foundation and Tideland Reclamation of Zhejiang Province, Wenzhou University, Wenzhou, Zhejiang 325035, China; 3. Innovation Center of Tideland Reclamation and Ecological Protection，Wenzhou University，Wenzhou，Zhejiang 325035，China; 4. College of Civil Architecture and Environment, Hubei University of Technology, Wuhan, Hubei 430068, China
  • Received:2016-04-20 Online:2016-11-11 Published:2018-06-09
  • Supported by:
    This research was supported by the Natural Science Foundation of China (51478364，51278383).

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Abstract: Through the Global Distribution System (GDS) resonant column tests on soft clay foundation with cement soil mixing piles samples, the effects of shear strain, cell pressure and replacement ratio of cement soil on dynamic properties are analyzed. The test results shows that, the change tendency of the dynamic shear modulus G and damping ratio D of the cement soil mixing pile soft clay foundation is the same as that of soft clay, the dynamic shear modulus G and damping ratio D of the soil are significantly influenced by the cell pressure and the replacement ratio in the small strain range; the influence is weakened with the increase of strain. The Gmax of soft clay foundation with cement soil mixing piles shows linear relationship with cell pressure; the enhancement effect on Gmax of the replacement ratio is significant at high cell pressure. The results can provide a reference for the dynamic parameters of the soft clay foundation with cement soil mixing piles.

Key words: cement soil mixing pile, composite soil, dynamic shear modulus, damping ratio, replacement ratio

CLC Number: 

  • TU 443
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