Influence of Dynamic Soil-Structure Interaction on Fundamental Period for Frame Structures

Abstract:

By using of the approximate value of T proposed in FEMA450, the equations of the approximate effective fundamental period are derived for circular mat foundations supported at the surface, embedded foundations of circular shape and embedded foundations of arbitrary shapes, respectively. It is found that the limit values of of Veletsos are not uniform, and excessive for structures with h/r > 9, but too small for embedded deeply foundations. In this paper the uniform limit value of is 1.10 for all structures, and the conditions of consideration of SSI are given for ordinary reinforced concrete frame structures with circular mat foundations supported at the surface, embedded foundations of circular shape, and embedded foundations of arbitrary shapes, respectively.

• Periodical: Applied Mechanics and Materials (Volumes 90-93)
• Pages: 1618-1626
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.90-93.1618
• Online since: September 2011
• Authors: Hua Xi Lu, Hai Feng Jiang, Ping Ying Liang, Bi Tao Wu
• Keywords: Dynamic Soil-Structure Interaction, Frame Structure, Fundamental Period

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