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A platform for research: civil engineering, architecture and urbanism
Effect of Vertical Shaft Resistance on the Lateral Behavior of Large-Diameter Pile Foundation
Abstract Current research gradually recognizes that resisting moment Ms, induced by vertical shaft resistance developed on the passive side of pile shaft, has non-ignorable influence on the lateral bearing characterize of large-diameter pile embedded in stiff soil layers. This work firstly presents numerical solution for resisting moment which is suitable for any type of side friction models. Accordingly, a series of analytical expressions for resisting moment versus slope are established with hardening and softening τ-s curve models (i.e., shaft resistance). Furthermore, the comparison of case study indicates that the influence of shaft resisting moment cannot be ignored for large-diameter pile embedded in stiff soil material. Finally, parametric study is performed and results reveal that for hardening τ-s curve, resisting moment Ms will increase with increase of pile diameter, equivalent limit friction τu,eq and as decreasing critical displacement seu; for softening τ-s model, Ms will increase with increasing pile diameter, ratio of residual-critical displacement to peak displacement and ratio of residual shaft friction to maximum shaft friction.
Effect of Vertical Shaft Resistance on the Lateral Behavior of Large-Diameter Pile Foundation
Abstract Current research gradually recognizes that resisting moment Ms, induced by vertical shaft resistance developed on the passive side of pile shaft, has non-ignorable influence on the lateral bearing characterize of large-diameter pile embedded in stiff soil layers. This work firstly presents numerical solution for resisting moment which is suitable for any type of side friction models. Accordingly, a series of analytical expressions for resisting moment versus slope are established with hardening and softening τ-s curve models (i.e., shaft resistance). Furthermore, the comparison of case study indicates that the influence of shaft resisting moment cannot be ignored for large-diameter pile embedded in stiff soil material. Finally, parametric study is performed and results reveal that for hardening τ-s curve, resisting moment Ms will increase with increase of pile diameter, equivalent limit friction τu,eq and as decreasing critical displacement seu; for softening τ-s model, Ms will increase with increasing pile diameter, ratio of residual-critical displacement to peak displacement and ratio of residual shaft friction to maximum shaft friction.
Effect of Vertical Shaft Resistance on the Lateral Behavior of Large-Diameter Pile Foundation
Zhu, Ming-xing (author) / Lu, Hong-qian (author) / Dai, Guo-liang (author) / Wan, Zhi-hui (author)
2018-01-01
4 pages
Article/Chapter (Book)
Electronic Resource
English
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