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| Time domain analysis of vertical dynamic response of a pile considering the effect of pile-soil interaction |
| Revised:October 08, 2002 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20044070 |
| KeyWord:soil-pile interaction,vertical vibration,hysteretic type damping,time domain |
| Hu Changbin~ |
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| Abstract: |
| Considering soil-pile interaction and vertical wave effect of soil around pile, the dynamic vertical response of a pile in time domain is investigated theoretically. The pile is assumed vertical and with elastic bottom boundaries and the soil is considered as visco-elastic layer with hysteretic type damping. The soil layer alone is solved first and its vibration displacement solution with undecided constants is used in the analysis of pile response. Then by solving dynamic equilibrium equation of pile, the pile response to a harmonic load is obtained in a closed form and a semi-analytical solution of the velocity response of pile subjected to a semi-sine wave exciting force is also given. In comparison with other theories, the correctness and applicability of the theoretical solutions presented herein are verified. Based on the solution, A parametric study is conducted to determine the main features of dynamic response of pile in time domain. It is shown that the theoretical curves are in good agreement with those obtained from on-site test. |
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