Seismic Response of Superstructure on Soft Soil Considering Soil-Pile-Structure Interaction

Publisher:
Presses des Ponts
Publication Type:
Conference Proceeding
Citation:
Challenges and innovations in geotechnics. Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, 2013, pp. 547 - 550
Issue Date:
2013-01
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This paper presents results of shaking table tests and three dimensional numerical simulations to investigate the influence of Soil-Pile-Structure Interaction (SPSI) on the seismic response of mid-rise moment resiting buildings supported by end-bearing pile foundations. Three different cases have been considered, namely: (i) fixed-base structure representing the situation excluding the soil-structure interaction; (ii) structure supported by shallow foundation on soft soil; 8nd (iii) structure supported by end-bearing pile foundation in soft soil. Comparison of the numerical predictions and the experimental data shows a good agreement confirming the reliability of the numerical model. Both experimental and numerical results indicate that soil-structure interaction induces significant increase in the lateral deflections and inter-storey drifts of the structures on both shallow and end-bearing pile foundations in comparison to the fixed base structures. This increase in the lateral deformations and in turn inter-storey drifts can change the performance level of the structure during earthquakes which may be safety threatening.
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