Deformation Behavior of Saturated Marine Silt under Principal Stress Rotation as Induced by Wave Loading

Applied Sciences

卷:11

Zhenzhen Niu¹  Lan Cui²  Qian Sheng²  Liuming Chang² 

[1] College of Marine Science and Technology, China University of Geosciences, 388 Lumo Road, Wuhan 430074, China;

[2] State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China;

关键词: wave loading;    saturated silt;    cumulative generalized shear strain;    cyclic stress ratio;    cyclic loading amplitude ratio;   

DOI  :  10.3390/app11209458

来源: DOAJ

【 摘 要 】

An experimental study aimed at providing insights into the cyclic deformation behavior of saturated marine silt under principal rotation, as induced by wave loading, is presented. Using the GDS hollow cylinder apparatus, a series of undrained tests are performed and the specimens at identical initial states are subjected to combined axial–torsional cyclic loading that imposes different levels of stress rotation. The cumulative generalized shear strain γ_g is used to describe the deformation of the silt under complex stress paths. The test results show that the cumulative generalized shear strain is significantly dependent on the cyclic stress ratio (CSR) and cyclic loading amplitude ratio δ. The cumulative generalized shear strain increases with the increase in CSR and decreases with the increase in δ. The development trend of γ_g can be well predicted through the correct Monismith model in the non-liquefaction silt, with a low error that is generally less than 10%.

【 授权许可】

Unknown