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CALCULATION OF THE NATURAL VIBRATIONAL FREQUENCY OF THE PULSE-LOADED EMBEDDED FOUNDATION |
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| รหัสดีโอไอ | |
| Title | CALCULATION OF THE NATURAL VIBRATIONAL FREQUENCY OF THE PULSE-LOADED EMBEDDED FOUNDATION |
| Creator | ALEKSEY KOLESNIKOV, VLADIMIR POPOV, TATIANA KOSTYUK |
| Contributor | Didem Ozevin, Hossein Ataei, Mehdi Modares, Asli Pelin Gurgun, Siamak Yazdani, Amarjit Singh |
| Publisher | ISEC PRESS |
| Publication Year | 2562 |
| Keyword | Machine foundation, Embedded foundation, Wave model, Eigenfrequency of the foundation. |
| Abstract | We consider the applicability of the formulas obtained within the framework of the wave model and Russian design code SP 26.13330.2012 to determine the dynamic stiffness in respect to vertical and horizontal vibrations of shallow and pile embedded foundations. The target is to calculate the varying natural vibrational frequencies of the system regarding the deepening. Obtained results are compared with the experimental data of a series of pulse dynamic loadings under the half-full-scale conditions on foundation models. The values of the transversal wave velocities are found directly on the test section from the test results. It is founded that deepening results in natural vibrational frequencies growth, both in the case of pile and shallow foundations. Full deepening more than 1.6 times increases the frequencies at the horizontal vibrations, and up to 1.4 times at the vertical vibrations, and the effect is stronger for the shallow foundations. The benefit of the results obtained by the wave model against the SP 26.13330.2012 method is demonstrated, as well as the good agreement between the calculation and experimental results, which permits finding the reliable amplitude- frequency characteristics of the foundations. The results obtained in accordance with SP 26.13330.2012 show lower values of the natural vibrational frequencies and do not completely regard the deepening effect. The maximal discrepancy with the experimental data is 33% for the vertical vibrations on the shallow and pile foundations. In the case of the horizontal vibrations, the maximal discrepancy is from 20 % for the shallow foundation to 27 % for the pile foundation. |
| ISBN | 978-0-9960437-6-2 |
| Language | English |
| URL Website | https://www.isec-society.org/ |
| Website title | ISEC Society |
