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SHAN Hong-xian, ZHENG Jie-wen, JIA Yong-gang, ZHANG Min-sheng, LIU Xiao-lei. Laboratory study about the influence of dynamic loading on the erosion of silty sediment in the Huanghe Estuary in China[J]. Haiyang Xuebao, 2009, 31(4): 112-119.
Citation: SHAN Hong-xian, ZHENG Jie-wen, JIA Yong-gang, ZHANG Min-sheng, LIU Xiao-lei. Laboratory study about the influence of dynamic loading on the erosion of silty sediment in the Huanghe Estuary in China[J]. Haiyang Xuebao, 2009, 31(4): 112-119.

Laboratory study about the influence of dynamic loading on the erosion of silty sediment in the Huanghe Estuary in China

  • Received Date: 2008-11-28
  • Rev Recd Date: 2009-04-10
  • In order to study the silty sediment erosion variety under the dynamic circulative loading,a series of indoor tests were processed.The rem oulded soil samples were prepared by the vacuum preloading.The dynamic loading,in different magnitudes and acting times,was exerted on the samples using the dynamic triaxial device.When the dynamic loading ended,the undrained shear strength and residual strength were continuo usly mensurated in the static test.The parallel samples were directly taken out from the dynamic triaxial device after dynamic loading for the penetration strength tested by the electronic digital display micropenet rometer.Then the scour experiments were carried out to mensurate the threshold velocity and the erosion rate.What is more,critical shear stress was calculated by the empirical equation.The results show that both an tierosio and strength of the silty soil are decreased after the dynamic loading action,and it is also found that the silty erosibility parameters of the threshold velocity and the erosion rate have a significant linear correlation with the dynamic loading conditions including the loading magnitude and acting times,and it is the same with the silty sediment strength parameters of the undrained shear strength,the residual strength and the penetration strength.
  • loading
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