Long-term time-dependent load-settlement characteristics of a driven pile in clay. (August 2019)

• Record Type: Journal Article
• Authors: Cui, Jifei; Li, Jingpei; Zhao, Gaowen
• Is Part Of: Computers and geotechnics. Volume 112(2019)
• Page Start: 41
• Page End: 50
• Publication Date: 2019-08
• Subjects: Driven pile -- Long-term -- Nonstationary flow surface theory -- Load-settlement characteristics -- Load transfer method; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2019.04.007
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: This paper proposes a theoretical method to estimate the long-term time-dependent bearing characteristics of a driven pile. The viscoplastic behavior of the surrounding soils is described by nonstationary flow surface (NSFS) theory. The evolution of the soil behavior due to aging is incorporated in a skin friction softening model, which is used in the load-transfer method to predict the bearing capacity evolution of a driven pile. Extensive comparisons with experimental data are performed to illustrate the effectiveness and accuracy of the theoretical method. Both the proposed method and the experimental data show that the bearing capacity of the test piles increases by 30–50% due to the aging effect. The good agreement indicates that the long-term capacity evolution can be evaluated using the proposed method.