Sands subjected to repetitive vertical loading under zero lateral strain: accumulation models, terminal densities, and settlement
Type
ArticleKAUST Department
Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)Earth Science and Engineering Program
Energy Resources and Petroleum Engineering
Physical Science and Engineering (PSE) Division
Date
2016-08-09Online Publication Date
2016-08-09Print Publication Date
2016-12Permanent link to this record
http://hdl.handle.net/10754/622597
Metadata
Show full item recordAbstract
Geosystems often experience numerous loading cycles. Plastic strain accumulation during repetitive mechanical loads can lead to shear shakedown or continued shear ratcheting; in all cases, volumetric strains diminish as the specimen evolves towards terminal density. Previously suggested models and new functions are identified to fit plastic strain accumulation data. All accumulation models are formulated to capture terminal density (volumetric strain) and either shakedown or ratcheting (shear strain). Repetitive vertical loading tests under zero lateral strain conditions are conducted using three different sands packed at initially low and high densities. Test results show that plastic strain accumulation for all sands and density conditions can be captured in the same dimensionless plot defined in terms of the initial relative density, terminal density, and ratio between the amplitude of the repetitive load and the initial static load. This observation allows us to advance a simple but robust procedure to estimate the maximum one-dimensional settlement that a foundation could experience if subjected to repetitive loads. © 2016, Canadian Science Publishing. All rights reserved.Citation
Chong S-H, Santamarina JC (2016) Sands subjected to repetitive vertical loading under zero lateral strain: accumulation models, terminal densities, and settlement. Canadian Geotechnical Journal 53: 2039–2046. Available: http://dx.doi.org/10.1139/cgj-2016-0032.Sponsors
This research was conducted by the authors while at the Georgia Institute of Technology. Support for this research was provided by the Goizueta Foundation and the KAUST endowment.Publisher
Canadian Science PublishingJournal
Canadian Geotechnical Journalae974a485f413a2113503eed53cd6c53
10.1139/cgj-2016-0032