IMECH-IR  > 流固耦合系统力学重点实验室
Scour effects on p-y curves for shallowly embedded piles in sand
Qi WG(漆文刚); Gao FP(高福平); Randolph MF; Lehane BM; Qi, WG (reprint author), Univ Western Australia, Ctr Offshore Fdn Syst, Crawley, Australia.; Qi, WG (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China.
Source PublicationGEOTECHNIQUE
2016
Volume66Issue:8Pages:648-660
ISSN0016-8505
AbstractSoil scour around a shallowly embedded pile can significantly compromise its lateral response, reducing both stiffness and capacity. Estimation of the lateral pile response must take into account both the scour-hole geometry and the overconsolidation effects on the remaining soil. A series of centrifuge model tests with various scour profiles were conducted at a scale of 1:250 to investigate the effects of both local and general scour on the response of a laterally loaded pile. Measured pile moment distributions and force-displacement data at the pile head were used to derive p-y curves quantifying the lateral pile-soil interaction. The p-y curves derived from various scour profiles were compared for equivalent depths below the new scour base, and below the original soil surface. For the general scour cases, the p-y curves for given depths below the post-scour surface are essentially identical to those at the same depths without scour. In contrast, for the local scour cases, the p-y response at a given depth below the scour-hole base is much stiffer than at the same depth below the original soil surface. As a practical approach to evaluate the effects of scour, the concept of an effective soil depth is introduced to determine the corresponding p-y curves for shallowly embedded piles in sand.
KeywordCentrifuge Modelling Deformation Erosion Piles & Piling Soil/structure Interaction Stiffness
DOI10.1680/jgeot.15.P.157
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000381317300003
WOS Keywordcentrifuge modelling ; deformation ; erosion ; piles & piling ; soil/structure interaction ; stiffness
WOS Research AreaEngineering
WOS SubjectEngineering, Geological
Funding OrganizationThis work is financially supported by Australia-China Natural Gas Technology Partnership Fund, National Natural Science Foundation of China (grant no. 11232012) and the National Basic Research Program of China ('973' Project) (grant no. 2014CB046204). Technical assistance in the centrifuge tests from the technicians of the Centre for Offshore Foundation System at UWA, is greatly appreciated. The authors would also like to acknowledge Pauline Truong of UWA whose advice and support were invaluable.
DepartmentLMFS流固土耦合力学(LHO)
Classification二类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59604
Collection流固耦合系统力学重点实验室
Corresponding AuthorQi, WG (reprint author), Univ Western Australia, Ctr Offshore Fdn Syst, Crawley, Australia.; Qi, WG (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Qi WG,Gao FP,Randolph MF,et al. Scour effects on p-y curves for shallowly embedded piles in sand[J]. GEOTECHNIQUE,2016,66(8):648-660.
APA 漆文刚,高福平,Randolph MF,Lehane BM,Qi, WG ,&Qi, WG .(2016).Scour effects on p-y curves for shallowly embedded piles in sand.GEOTECHNIQUE,66(8),648-660.
MLA 漆文刚,et al."Scour effects on p-y curves for shallowly embedded piles in sand".GEOTECHNIQUE 66.8(2016):648-660.
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