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http://dx.doi.org/10.7843/kgs.2018.34.7.51

Comparison of Lateral Pile Behavior under Static and Dynamic Loading by Centrifuge Tests  

Yoo, Min-Taek (Korea Railroad Research Institute)
Kwon, Sun-Yong (Korea Environment Institute)
Publication Information
Journal of the Korean Geotechnical Society / v.34, no.7, 2018 , pp. 51-58 More about this Journal
Abstract
In this study a series of centrifuge tests were carried out in dry sand to analyze the comparison of lateral pile behavior for static loading and dynamic loading condition. In case of static loading condition, the lateral displacement was applied up to 50% of pile diameter by deflection control method. And the input sine wave of 0.1 g~0.4 g amplitude and 1 Hz frequency was applied at the base of the soil box using shaking table for dynamic loading condition. From comparison of experimental static p-y curve obtained from static loading tests with API p-y curves, API p-y curves can predict well within 20% error the ultimate subgrade reaction force of static loading condition. The ultimate subgrade reaction force of experimental dynamic p-y curve is 5 times larger than that of API p-y curves and experimental static p-y curves. Therefore, pseudo-static analysis applied to existing p-y curve for seismic design could greatly underestimate the soil resistance at non-linear domain and cause overly conservative design.
Keywords
Centrifuge test; Soil-structure-interaction; Dynamic p-y curve; Static p-y curve; API p-y curve;
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