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The Effect of Soil-Structure Interaction on the Probability of Collapse
Banihashemi, Mir Amir | 2018
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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 50808 (09)
- University: Sharif University of Technology
- Department: Civil Engineering
- Advisor(s): Ghanad, Mohammad Ali; Mahsuli, Mojtaba
- Abstract:
- The primary objective of this thesis is twofold: First, the effect of soil-structure interaction (SSI) on the collapse probability of structures are studied. Second, the consequences of practicing the SSI provisions of two prominent seismic design guidelines, i.e., ASCE 7-10 and ASCE 7-16, on the performance of building structures are evaluated and compared. The analyses are conducted for a wide range of dimensionless parameters, which represent different structures on a variety of soil types. To compute the probability of collapse, incremental dynamic analyses are conducted in which In addition to ground motion variability, the uncertainties in the properties of the soil-structure systems are accounted for. The results reveal that SSI reduces the probability of collapse by up to 10%. Moreover, this study indicates that structures with a high rate of deterioration are roughly 10% more likely to collapse than the ones with a low rate of deterioration. Furthermore, this study shows that structures designed in accordance with the SSI provisions of ASCE 7-10 are up to 40% more likely to collapse than fixed-base designed structures. In contrast, structures designed according to the SSI provisions of ASCE 7-16 have nearly the same collapse probabilities as those designed based on fixed-base provisions. Therefore, the SSI provisions of ASCE 7-16 can be regarded as an improvement upon those of ASCE 7-10
- Keywords:
- Land Subsidence ; Uncertainty ; Probability Analysis ; Soil-Structure Interaction ; Earthquake Code ; Strength Deteriorating ; Stiffness Deteriorating
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