INFLUENCE OF DISPLACEMENT OF SATURATED SAND STRATUM ON PRE-STRESSED ANCHORS |
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| Authors: | LIU Bo ZHANG Gong LIU Qingnan HUANG Mian JIANG Yonghua ZHOU Haoliang |
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| Institution: | 1. School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China;2. State Key Laboratory of Deep Geomechanics and Underground Engineering, Beijing 100083, China;3. Beijing Modern Jinyu Construction Co. Ltd, Beijing 100102, China |
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| Abstract: | Soil displacement is an important cause of stress fluctuation or invalidation of pre-stressed anchors. Using the load-displacement transfer function and based on the elastic theory, a force model of the pre-stressed anchor in saturated sand stratum is established, to study the variation law of stresses in the anchor in construc-tion processes and the mechanical characteristics of the anchor body with soil deformation for a real project. It is shown that the interface shear stiffness, the inclination angle and the anchor body diameter all have significant influences on the axial force in the anchor body and the interface shear stress. |
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| Keywords: | saturated sand stratum|pre-stressed anchor|anchor body|interface shear stiffness |
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