| Autor: |
Vratsikidis, Athanasios, Pitilakis, Dimitris, Anastasiadis, Anastasios, Kapouniaris, Anastasios |
| Předmět: |
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| Zdroj: |
Bulletin of Earthquake Engineering; May2022, Vol. 20 Issue 7, p3167-3194, 28p |
| Abstrakt: |
Two structural configurations of the EuroProteas prototype structure, defining two test structures with different structural stiffness, were subjected to dynamic excitation to study the influence of soil-foundation-structure interaction effects on the recorded response. The first test structure was braced in all directions making a stiff structure frame based on soft ground. In contrast, we removed the bracing in the direction of loading in the second structure to significantly reduce its structural stiffness and the relative structure-to-soil stiffness ratio. Ambient noise measurements, free-vibration tests over a wide range of pull-out forces and forced-vibration experiments over a wide range of frequencies were included in the experimental series performed on both structures. The strong effects of the soil-foundation-structure interaction in the response of the stiff structure were expressed in the detected period elongation and the dominating rocking component which increased the radiation damping. The identified rocking stiffness was found to be frequency-dependent, in contrast to the lateral stiffness. On the contrary, the most significant proportion of the introduced energy was dissipated in the structural members of the second test structure, and the measured translation and rotation of the foundation were almost negligible. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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