https://scholars.lib.ntu.edu.tw/handle/123456789/576024
標題: | Numerical investigation of pile-head load effects on the negative skin friction development of a single pile in consolidating ground | 作者: | Chiou J.-S Wei W.-T. JIUNN-SHYANG CHIOU |
關鍵字: | bearing capacity; consolidation; displacement; friction; loading test; numerical model; pile response; soil-structure interaction | 公開日期: | 2021 | 卷: | 16 | 期: | 6 | 起(迄)頁: | 1867-1878 | 來源出版物: | Acta Geotechnica | 摘要: | This study conducted parametric analyses to investigate the influence of structural loading (pile-head loading) on the development of negative skin friction in friction single piles and friction-end-bearing single piles in consolidating ground. Numerical effective stress-based mechanical-flow analysis models were built in ABAQUS software. The appropriateness of the modeling approach was verified by applying it to simulate a field model test described in the literature. For small surcharges, pile-head loading considerably reduces the depth of the neutral plane and therefore drag load for the friction pile. Under the same pile-head loads, the reduction in total drag load for the friction-end-bearing pile is smaller than that for the friction pile. However, when the friction-end-bearing pile is subjected to larger pile-head loads, the degree of total drag load reduction is comparable to that of the friction pile. Considerable pile-head displacement occurs under the combined action of pile-head and surcharge loadings. In contrast to the friction pile, the friction-end-bearing pile, because of the greater stiffness and strength of its bearing stratum, exhibits a significant reduction in negative skin friction, no bearing failure, and a smaller pile-head displacement when it is subjected to large pile-head loading. ? 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099607474&doi=10.1007%2fs11440-020-01134-0&partnerID=40&md5=069e8f568da58362a385d66a1853084b https://scholars.lib.ntu.edu.tw/handle/123456789/576024 |
ISSN: | 18611125 | DOI: | 10.1007/s11440-020-01134-0 |
顯示於: | 土木工程學系 |
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