Structural response for six correlated earthquake components
作者:
Mohsen Ghafory‐Ashtiany,
Mahendra P. Singh,
期刊:
Earthquake Engineering&Structural Dynamics
(WILEY Available online 1986)
卷期:
Volume 14,
issue 1
页码: 103-119
ISSN:0098-8847
年代: 1986
DOI:10.1002/eqe.4290140108
出版商: John Wiley&Sons, Ltd
数据来源: WILEY
摘要:
AbstractThe paper examines the effect on the structural response of the inevitable correlation which exists between the six earthquake components acting along a set of structural axes. The rotational components are expressed in terms of the spatial derivatives of the translational components. For the calculation of response, modal analysis is employed so that ground response spectra can also be used as seismic input. A methodology is developed to obtain the maximum mean square response which can occur in a structure, irrespective of its orientation with respect to the impinging seismic waves. The application of this methodology for the calculation of design response is advocated, especially for asymmetric structures. For the assumed model of seismic wave motion, the numerical results show a significant contribution to the response from the rotational components. This contribution is, however, expected to be reduced by structural foundation averaging and interaction effects. Further studies with more complete models of seismic wave motions, and their interaction with structural foundations, are thus warranted for a realistic evaluation and characterization of the rotational inputs for design purposes.
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