Soil-Structure Interaction in RC Frame Buildings from Strong-Motion Recordings
Abstract
In this study, Soil-structure interaction (SSI) of Reinforced Concrete (RC) buildings which are instrumented by building monitoring systems is detected and identified. SSI can have a major influence on the seismic response of buildings constructed on soft soils. The dominant frequency recorded for a building subjected to SSI is always smaller than the dominant frequencies of the fixed-based building, and of the foundation when no building is present. The identification of SSI refers to extracting natural frequencies of the fixed-based building and the foundation from recordings of the foundation and upper stories. This interaction can be identified easily from the dynamic characteristics of the structure obtained by using seismic vibration records on the structures and if in addition to the records from the building, there are also free-field surface records available from nearby locations that are not influenced by building's vibrations. Two examples are studied according to the mentioned method by using their recorded responses during the two strongest earthquakes nearby Antakya since 2006.
Keywords
References
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Details
Primary Language
English
Subjects
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Journal Section
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Publication Date
April 21, 2011
Submission Date
April 20, 2011
Acceptance Date
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Published in Issue
Year 2011 Volume: 14 Number: 1