Seismic Behavior of RC Bridge Piers under Bidirectional Excitations: Implications of Site Effects |
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Authors: | Debashis Kar |
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Affiliation: | Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering Science and Technology, Shibpur (erstwhile Bengal Engineering and Science University, Shibpur), Howrah, India |
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Abstract: | Seismic demand of structures may be potentially magnified due to bidirectional shaking. This may also be strongly influenced by the amplification and/or attenuation of motions due to local site conditions. Current investigation examines the implications of these two aspects collectively. A code-designed reinforced concrete pier has been analyzed under recorded accelerograms and their derivatives from 1-D site analysis. Magnification in peak and cumulative responses due to bidirectional shaking may be sensitive to record-to-record variability. However, such magnification remains relatively stable across site characteristics. Combination rules are shown adequate to estimate peak deformation and deficient for cumulative demand irrespective of the site conditions. |
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Keywords: | Bidirectional Reinforced Concrete Site Effect Accelerogram Amplification Seismic |
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