Target acceleration in multimodal pushover method for R/C frames

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Target acceleration in multimodal pushover method for R/C frames

Author: Ivan Balić , BSc. CE University of Split :Prof. Ante Mihanović, PhD. CE University of Split:Prof. Boris Trogrlić, PhD. CE University of Split | Size: 1.8 MB | Format: PDF | Quality: Unspecified | Year: 2013 | pages: 14

The procedure of searching the target ground acceleration as a measure of the lowest seismic
resistance is presented in the paper. This objective is achieved by the multimodal pushover
analysis based on the envelope principle. The pushover method founded on the linear combination
of modes (L), and on mode combinations as a square root of the sum of the squares (SRSS), is
presented. Examples of 5-storey and 9-storey R/C frames point to a highly significant influence
of higher modes. The failure ground acceleration in multimodal pushover analysis is significantly
lower, and even several times lower, compared to the single mode acceleration.

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