Abstract：The strain controlled dynamic triaxial tests to measure the dynamic moduli and the damping ratios were conducted on intact marine samples from sea area at Daishan，in Zhoushan Archipelago. The experimental results show that the hysteresis curves of Zhoushan Daishan marine sediments are not completely closed loops and are strain softening. The values of dynamic modulus and damping ratio under certain strain amplitude fluctuate around constant values respectively which are designated as the representative values of the dynamic moduli and damping ratios under the corresponding strain amplitude. As such，relationships between dynamic moduli and strain amplitude and between damping ratio and strain amplitude under different confining pressures are established，which converge asymptotically. Hardin-Drnevich(H-D) model is modified to fit the experimental data. Meanwhile，the resonant column tests are conducted to measure the elastic moduli of the marine sediments under wave loading. The results from two tests show that the marine sediments from Daishan are sensitive to the confining pressure.
汪明元1，单治钢1，王亚军2，狄圣杰1. 应变控制下舟山岱山海相软土动弹性模量及阻尼比试验研究[J]. 岩石力学与工程学报, 2014, 33(7): 1503-1512.
WANG Mingyuan1，SHAN Zhigang1，WANG Yajun2，DI Shengjie1. DYNAMIC ELASTIC MODULI AND DAMPING RATIOS OF MARINE SEDIMENTS AT ZHOUSHAN DAISHAN BASED ON DYNAMIC TRIAXIAL TESTS UNDER STRAIN CONTROL. , 2014, 33(7): 1503-1512.
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2014, Vol. 33 
