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http://dx.doi.org/10.7843/kgs.2016.32.8.47

Evaluation of Rocking Mechanism for Embedded Shallow Foundation via Horizontal Slow Cyclic Tests  

Ko, Kil-Wan (Dept. of Civil & Environmental Engrg., KAIST)
Ha, Jeong-Gon (Dept. of Civil & Environmental Engrg., KAIST)
Park, Heon-Joon (Dept. of Civil & Environmental Engrg., KAIST)
Kim, Dong-Soo (Dept. of Civil & Environmental Engrg., KAIST)
Publication Information
Journal of the Korean Geotechnical Society / v.32, no.8, 2016 , pp. 47-59 More about this Journal
Abstract
Rocking behavior of shallow foundation reduces the superstructure load during earthquake. However, because of deficiency of understanding of rocking mechanism and soil permanent deformation, it has not been applied to real construction. In this study, slow cyclic tests were conducted for embedded shallow foundations with various slenderness ratio via centrifuge tests. From the variation of earth pressure 'soil rounding surface' phenomenon which makes maximum overturning moment equal to ultimate moment capacity was observed. Rocking and sliding behavior mechanism was evaluated. Also, nonlinear behavior and energy dissipation increase as rotation angle increases. And ultimate moment capacity of embedded foundation is larger than that of surface foundation. Finally, adequate ultimate moment capacity can be suggested for seismic design through this study.
Keywords
Rocking foundation; Slow cyclic test; Shallow foundation; Ultimate moment capacity; Rocking mechanism; Embedded foundation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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