A simplified settlement analysis of a piled raft in London Clay
DOI:
https://doi.org/10.24849/j.geot.2020.150.07Keywords:
Piled Raft, Settlement, Numerical AnalysisAbstract
This paper analyzes the settlement behavior of the Hyde Park Cavalry Barracks building in London, using an axisymmetric finite element solution. The building features a piled raft foundation built in a thick layer of London clay, which is stress-strain behavior is represented using the modified Cam-Clay constitutive model. Hooper (1973) and Gasparre (2005) provided construction data and the soil parameters adopted in this paper. The stages of construction of the foundation were considered and predicted settlements were compared with field measurements and the numerical predictions reported by Hooper (1973), Hain and Lee (1978), Sales et al. (2010) and Bernardes et al. (2019). The proposed analysis differs from those published before since it does not use soil elastic parameters back analyzed from the field settlement measurements. The results show reasonable agreement between the predicted and the measured values, indicating the adequate choice of the modified Cam-Clay constitutive model and the importance of the definition of the recompression coefficient in the analysis of highly overconsolidated clays.
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References
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