| Pore Water Pressure Buildup Under Cyclic Rotation of Principal Stress and Stability Evaluation of Seabed Deposit |
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| 作者单位： | Shen Ruifu，Wang Hongjin，Zhou Jinxing and Zhou Keji Former graduate student of Tsinghua University，now works in Nanjing Hydraulic Research Institute，Nanjing 210029Professor，Tsinghua University，Beijing 100084 Senior Engineer，Tsinghua University，Beijing 100084 |
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| 摘 要： | - The cyclic rotation of principal stress direction with a constant amplitude is the characteristics of cyclic stress in seabed deposit induced by travelling waves. Presented in the paper are the results obtained from tests simulating the cyclic stress characteristics, with emphasis laid on the buildup of pore water pressure in soil samples. Regression analysis of test data shows that the pore water pressure can be expressed as the function of the number of cycles of cyclic loading, or as the function of generalized shear strain. Using the results thus obtained, the possibility of failure of seabed deposit under cyclic loading induced by travelling waves can be evaluated. The comparison with the results of conventional cyclic torsional shear tests shows that neglect of the effect of the cyclic rotation of the principal stress direction will result in considerable over-estimation of the stability of seabed deposit.
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Pore Water Pressure Buildup Under Cyclic Rotation of Principal Stress and Stability Evaluation of Seabed Deposit |
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| Shen Ruifu,Wang Hongjin,Zhou Jinxing and Zhou Keji Former graduate student of Tsinghua University,now works in Nanjing Hydraulic Research Institute,Nanjing Professor,Tsinghua University,Beijing Senior Engineer,Tsinghua University,Beijing. Pore Water Pressure Buildup Under Cyclic Rotation of Principal Stress and Stability Evaluation of Seabed Deposit[J]. China Ocean Engineering, 1994, 0(4) |
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| Authors: | Shen Ruifu Wang Hongjin Zhou Jinxing Zhou Keji Former graduate student of Tsinghua University now works in Nanjing Hydraulic Research Institute Nanjing Professor Tsinghua University Beijing Senior Engineer Tsinghua University Beijing |
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| Affiliation: | Shen Ruifu,Wang Hongjin,Zhou Jinxing and Zhou Keji Former graduate student of Tsinghua University,now works in Nanjing Hydraulic Research Institute,Nanjing 210029Professor,Tsinghua University,Beijing 100084 Senior Engineer,Tsinghua University,Beijing 100084 |
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| Abstract: | - The cyclic rotation of principal stress direction with a constant amplitude is the characteristics of cyclic stress in seabed deposit induced by travelling waves. Presented in the paper are the results obtained from tests simulating the cyclic stress characteristics, with emphasis laid on the buildup of pore water pressure in soil samples. Regression analysis of test data shows that the pore water pressure can be expressed as the function of the number of cycles of cyclic loading, or as the function of generalized shear strain. Using the results thus obtained, the possibility of failure of seabed deposit under cyclic loading induced by travelling waves can be evaluated. The comparison with the results of conventional cyclic torsional shear tests shows that neglect of the effect of the cyclic rotation of the principal stress direction will result in considerable over-estimation of the stability of seabed deposit. |
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| Keywords: | rotation of principal stress direction pore water pressure generalized shear strain residual deformation |
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