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Influence of High Mode Effects on Ductility Reduction Factors for MDOF Shear-Type Structures

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Abstract:

The influences of high mode effect on ductility reduction factors for multi-degree-of-freedom (MDOF) systems are studied by modifying ductility reduction factors for equivalent single-degree-of-freedom (SDOF) systems. Based on MDOF lumped-mass shear-type models, nonlinear dynamic time history analysis are performed to investigate the influence of ductility demand increase owing to high mode effect on ductility reduction factors. An empirical estimating model of MDOF modification factor is proposed. The results demonstrate that ductility reduction factors for MDOF systems are clearly smaller than those for SDOF systems. The modification factor is mainly affected by the fundamental period and ductility.

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Periodical:

Applied Mechanics and Materials (Volumes 578-579)

Pages:

412-416

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.578-579.412

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Online since:

July 2014

Authors:

Hui Ying Wang*

Keywords:

Ductility Reduction Factors, High Mode, Multi-Degree-of-Freedom System, Nonlinear Dynamic Analysis, Shear-Type Structure

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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