Effect of angle between initial and cyclic shear stress on behaviors of marine clay |
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| Authors: | Feiyu Liu Pan Luo Yan Zhang |
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| Institution: | 1. Department of Civil Engineering, Shanghai University, Shanghai, PR China;2. College of Architectural and Civil Engineering, Wenzhou University, Wenzhou, Zhejiang, China;3. The Key Laboratory of Engineering and Technology for Soft Soil Foundation and Tideland Reclamation of Zhejiang Province, Wenzhou, Zhejiang, China;4. Collaborative Innovation Center of Tideland Reclamation and Ecological Protection, Wenzhou University, Wenzhou, Zhejiang, China |
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| Abstract: | An angle exists between the initial static shear stress and cyclic shear stress when embankment and retaining walls are subjected to cyclic loadings. To investigate the influence of this angle on the dynamic properties of marine soft clay, tests were performed on Wenzhou soft clay. When the angle was varied from 0° to 90°, the shear strain and excess pore pressure decreased as θ increased while increased as θ increased from 120° to 180°. Shear strain developed more rapidly when θ was 120°, 150°, or 180° than that when θ was 0°, 30°, or 60°. These results indicate that the number of cycles to failure at the larger angles was greater than at the smaller angles. When θ was 90°, the strain in the x-axis direction increased as the number of cycles increased. The development of the excess pore pressure associated with specimen failure was different for different cyclic shear stress ratios and shearing angles. The effect of θ on the strain and excess pore pressure increased as the cyclic shear stress ratio increased. |
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| Keywords: | Dynamic pore pressure dynamic shear strain dynamic simple shear apparatus marine soft clay |
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