Seismic Performance of Raft Foundation of H.R.B. with SSI Effect
Journal Title: American journal of Engineering Research - Year 2018, Vol 7, Issue 5
Abstract
Vertical expansion, few land and small space available in construction make the high rise building (HRB) the most effective solution. HRB is special structure behave with different conduct under seismic excitation.Soil structure interaction (SSI) be more effective under earthquake load. Two approach of the soil models used to represent the soil effect on the structure to check the accuracy of each model in the representation of soil under dynamic loads. The SSI is the most effective parameter in design HRB whatever the type of foundation, the medium soil characteristics are widely spread. Raft foundation for HRB is the best foundation solution for such special buildings. SAP2000 program used to show the effect of SSI in HRB under seismic excitation. Three effective actions under earthquake are occurred: 1) large displacements, 2) high values of damping, and 3) low values of straining actions. In medium soil the straining action reduced by 55% than the fixed model, but the displacement the most effective parameter which gauged the collapse damages in HRB are very high, and the most effective soil model was the elastoplastic model which the soil was modeled as spring and dashpot.
Authors and Affiliations
Ahmed Abd El-Raheem Farghaly, Ahmed Mohamed El-Khamisy
Keywords
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