Earthquakes and Structures

  • 제3권3_4호
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  • Pages.495-506
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  • 2012
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Dynamic response of pile foundations with flexible slabs

  • Kaynia, Amir M. (Norwegian Geotechnical Institute (NGI), Oslo, and Norwegian University of Science and Technology (NTNU))
  • 투고 : 2011.12.06
  • 심사 : 2012.04.10
  • 발행 : 2012.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

An elasto-dynamic model for pile-soil-pile interaction together with a simple plate model is used in this study to assess the effect of flexible foundation slabs on the dynamic response of pile groups. To this end, different pile configurations with various slab thicknessesare considered in two soil media with low and high elastic moduli. The analyses include dynamic impedances and seismic responses of pile-group foundations. The presented results indicate that the stiffness and damping of pile foundations increase with thickness of the foundation slab; however, the results approach those for rigid slab as the slab thickness approaches twice the pile diameter for the cases considered in this study. The results also reveal that pile foundations with flexible slabs may amplify the earthquake motions by as much as 10 percent in the low to intermediate frequency ranges.

키워드

참고문헌

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  10. Pender, M. (1993), "Aseismic pile foundation design analysis", B. New Zeal. Soc. Earthq. Eng., 26(1), 49-160. https://doi.org/10.5459/bnzsee.26.1.49-160
  11. Roesset, J.M. (1982), Dynamic stiffness of pile groups, Pile Foundations, ASCE, New York, 263-286.
  12. Waas, G. and Hartmann, H.G. (1984), "Seismic analysis of pile foundations including pile-soil-pile interaction", Proc. 8th World Conf. Earthq. Eng., San Francisco, California, 5, 55-62.
  13. Wolf, J.P., von Arx, G.A., de Barros, F.C.P. and Kakubo, M. (1981), Seismic analysis of the pile foundation of the reactor building of the NPP Angra 2", Nucl. Eng. Des., 65(3), 329-341. https://doi.org/10.1016/0029-5493(81)90098-4

피인용 문헌

  1. Lateral stiffness of reinforced concrete flat plates with steps under seismic loads vol.7, pp.5, 2014, https://doi.org/10.12989/eas.2014.7.5.891
  2. Vertical dynamic impedance of the support plate of the Rod-less drilling rig in layered soil vol.80, 2016, https://doi.org/10.1016/j.soildyn.2015.10.013
  3. 3D FEM Analysis of a Pile-Supported Riverine Platform under Environmental Loads Incorporating Soil-Pile Interaction vol.6, pp.1, 2018, https://doi.org/10.3390/computation6010008
  4. Nonlinear analysis of a riverine platform under earthquake and environmental loads vol.26, pp.6, 2012, https://doi.org/10.12989/was.2018.26.6.343