A simplified piecewise-hyperbolic softening model of skin friction for axially loaded piles. (April 2019)

• Record Type: Journal Article
• Authors: Xu, Ling-Yu; Shao, Wang-Da; Xue, Ying-Ying; Cai, Fei; Li, Yong-Yi
• Is Part Of: Computers and geotechnics. Volume 108(2019)
• Page Start: 7
• Page End: 16
• Publication Date: 2019-04
• Subjects: Axially loaded pile -- Load-transfer curve -- Softening -- Settlement -- Finite element analysis; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2018.12.018
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: In this study, a simplified piecewise-hyperbolic softening (SPS) model is proposed to characterize both softening and hardening behaviors of skin friction. A highly effective finite element program is developed for the nonlinear analysis of axially loaded piles. The applicability of the proposed method is verified by an analytical solution and two well-documented filed tests of axially loaded piles. Moreover, a parametric study is conducted to investigate the influence of various parameters of the SPS model on the load-settlement relationship of piles. Finally, the results obtained from the SPS model are compared with those obtained from other two existing softening models.