期刊
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
卷 37, 期 -, 页码 56-72出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.soildyn.2012.01.011
关键词
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资金
- RAS (the Autonomous Region of Sardinia)
- University of Cagliari
In the literature relevant to soil-foundation-structure interaction problems a lot of results for the dynamic stiffness in the interface between the soil-foundation part and the structure have been published. However, in order to deal with transient excitations, a transformation into the time-domain is necessary. This contribution uses a well-described Fade-like rational representation, but adds some improvements concerning robustness, optimized treatment of spurious modes and numerical effectiveness. The benefits of the new findings are demonstrated by means of a typical application from foundation-engineering: very well prepared dynamic stiffness coefficients for groups of piles are used in order to treat transient excitations caused by an unbalanced rotor during running-up. (C) 2012 Elsevier Ltd. All rights reserved.
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