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NUMERICAL MODELLING TO STUDY SOIL STRUCTURE INTERACTION FOR TALL ASYMETRICAL BUILDINGAuthors: Pallavi Ravishankar,Dr D Neelima Satyam Conference: International Conference on Earthquake Geotechnical Engineering Location Istanbul, Turkey Date: 2013-06-17 Report no: IIIT/TR/2013/63 AbstractTall asymmetric buildings experience more risk during the earthquakes (Ming, 2010). This happens mainly due to attenuation of earthquake waves and local site response which get transferred to the structure and vice versa. This can be well explained by the Dynamic Soil Structure Interaction (DSSI) analysis. Tall Building and unbounded soil is modeled by using the Finite-Element Method, which naturally satisfies the radiation condition for the wave propagation problem. In this research paper 150 m tall superstructure with two different foundation systems like raft and piled raft is considered for analysis. The analysis is done by assuming homogeneous soil strata and the results are studied for input of Bhuj ground motion (2001, magnitude of 7.7). The response of structure and soil structure interaction parameters for the given dynamic loading for a given foundation systems mentioned above studied and compared to understand the dynamic soil structure interaction for the tall buildings. From the analysis it has been noted that the peak displacement at top is more than that at bottom of the superstructure. Full paper: pdf Centre for Earthquake Engineering |
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