Generalized nonlinear model describing softening and hardening behaviors of skin friction for axially loaded piles. (December 2019)

• Record Type: Journal Article
• Authors: Xu, Ling-Yu; Cai, Fei; Pan, Jing-Min; Xue, Ying-Ying
• Is Part Of: Computers and geotechnics. Volume 116(2019)
• Publication Date: 2019-12
• Subjects: Axially loaded piles -- Generalized nonlinear model -- Hyperbolic model -- Skin friction -- Softening behavior; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2019.103196
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: This study proposes a new generalized nonlinear (GN) model to provide a continuous describing in the whole nonlinear regime of load-transfer curves, including both softening and hardening phenomenon. The applicability of the proposed GN model is verified by comparing the calculated relation between the skin friction and relative pile-soil displacement of axially loaded piles with measurements and those calculated by existing nonlinear softening models. Moreover, the proposed GN model is implemented in a finite element program for settlement analysis of axially loaded piles. The results indicate that the proposed GN model can be considered as a generalization of a hyperbolic model and an existing generalized nonlinear softening model and is expected to cover a wide range of variations in skin friction-displacement data of axially loaded piles.