Comparison Of Structural Responses for a Base Isolated Building Under Real and Simulated Records

2019-06-01
Ozsarac, Volkan
Karim Zadeh Naghshineh, Shaghayegh
Askan, Ayşegül
In recent decades, base isolation systems for buildings are commonly used as retrofitting strategy in earthquake-prone areas. Evaluation of structural responses for base-isolated systems subjected to severe earthquakes is challenging since some regions have scattered ground motion dataset. Simulated ground motions can be an alternative to overcome this issue. There are several ground motion simulation methods available that provide varying levels of goodness fit between observed and synthetic data; therefore, simulated motions need to be investigated in terms of their efficiency in the prediction of alternative structural demands corresponding to base-isolated buildings. Herein, a six-story steel moment-resisting frame is selected from the SAC Steel Project and retrofitted with lead rubber bearings in accordance with ASCE 7‐10. Then, nonlinear time-history analysis of the structure is carried out using the real and simulated records of the 6 April 2009 L′Aquila (Italy) earthquake (Mw=6.3). For this purpose, simulated records generated based on the Hybrid Integral-Composite method are employed. Results of analyses are compared in terms of alternative response parameters including inter-story drifts, base displacements, base shear and accelerations at each story level. Overall, the difference in terms of the real and estimated demand parameters from the ground motion simulation technique is negligible.
16th World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures

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Citation Formats
V. Ozsarac, S. Karim Zadeh Naghshineh, and A. Askan, “Comparison Of Structural Responses for a Base Isolated Building Under Real and Simulated Records,” presented at the 16th World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures, Russian Federation, St.Petersburg 1-6 July, 2019, 2019, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87915.