Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Influence of isolated footing embedment on the seismic performance of building considering the soil-foundation-structure interaction: An experimental approach
The present study investigates the influence of embedment depth of isolated footing supporting moment-resisting frame buildings through scaled-down tests. These experiments utilize scaled models representing different building aspect ratios and footing embedment depths. All the model tests are subjected to scaled-down input ground motions of different intensities and magnitudes. These model tests are performed in laminar shear containers through shake table testing. The results obtained for different cases of soil-foundation-structure systems and fixed-base conditions are expressed in terms of natural frequency, peak spectral acceleration, frequency response, lateral deformation, inter-storey drifts, and rocking of the foundation. The analysis reveals that the natural frequency of the coupled system on isolated footings diminishes by 27.52%–58.21% relative to fixed-base conditions, highlighting the significance of accounting for soil-foundation-structure interaction effects. Moreover, a notable increase of 52.97% in the natural frequency of the coupled system is observed as the embedment depth of the footing increases from 0.75 to 6. Additionally, the study demonstrates that the inter-storey drift of the 5-storey building remains well within acceptable limits under dense soil conditions. Consequently, within the parameter range explored in this research, the study concludes that soil-foundation-structure interaction effects are insignificant for low-rise buildings (H ≤ 15 m) supported on isolated footings during seismic events.
Influence of isolated footing embedment on the seismic performance of building considering the soil-foundation-structure interaction: An experimental approach
The present study investigates the influence of embedment depth of isolated footing supporting moment-resisting frame buildings through scaled-down tests. These experiments utilize scaled models representing different building aspect ratios and footing embedment depths. All the model tests are subjected to scaled-down input ground motions of different intensities and magnitudes. These model tests are performed in laminar shear containers through shake table testing. The results obtained for different cases of soil-foundation-structure systems and fixed-base conditions are expressed in terms of natural frequency, peak spectral acceleration, frequency response, lateral deformation, inter-storey drifts, and rocking of the foundation. The analysis reveals that the natural frequency of the coupled system on isolated footings diminishes by 27.52%–58.21% relative to fixed-base conditions, highlighting the significance of accounting for soil-foundation-structure interaction effects. Moreover, a notable increase of 52.97% in the natural frequency of the coupled system is observed as the embedment depth of the footing increases from 0.75 to 6. Additionally, the study demonstrates that the inter-storey drift of the 5-storey building remains well within acceptable limits under dense soil conditions. Consequently, within the parameter range explored in this research, the study concludes that soil-foundation-structure interaction effects are insignificant for low-rise buildings (H ≤ 15 m) supported on isolated footings during seismic events.
Influence of isolated footing embedment on the seismic performance of building considering the soil-foundation-structure interaction: An experimental approach
Vaibhav Mittal (Autor:in) / Manojit Samanta (Autor:in) / D.P. Kanungo (Autor:in)
2025
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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