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Volume 35 Issue zk2
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CAO Yong, KONG Ling-wei, YANG Ai-wu. Characteristics of stiffness degradation and strength effect of dynamic damage of structured soft soils[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 236-240.
Citation: CAO Yong, KONG Ling-wei, YANG Ai-wu. Characteristics of stiffness degradation and strength effect of dynamic damage of structured soft soils[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 236-240.
shu

Characteristics of stiffness degradation and strength effect of dynamic damage of structured soft soils

  • 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics Chinese Academy of Sciences Wuhan 430071, China; 2. Department of Civil Engineering, Tianjin Institute of Urban Construction, Tianjin 300384, China

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  • Received Date: June 06, 2013
  • Published Date: November 24, 2013
    Graphical Abstract
    • Abstract
  • The structure of natural clay will tend to be damaged under the external load, and its mechanical characteristics will change, especially under the condition of dynamic load. The mechanical change of Tianjin marine deposited structured soft soils subjected to cyclic loading is investigated. The resonant column tests and post-cyclic monotonic tests on the soft soils which experience different cyclic loadings are performed. The resonant column test results show that the degradation rate of stiffness is from quick to slow with the development of structural damage. The revelation of the strength degradation law is similar to that of the stiffness degradation law. This degradation law is analyzed from the structural damage view, and the ratio of stiffness to strength of soft soils under the damage process is discussed. A conclusion is dram that the degradation degree of stiffness is larger than that of strength.
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    • References (14)
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