Dynamic Soil-Structure Interaction Analysis of Reinforced Concrete Buildings

Authors: Abdelhacine Gouasmia, Abdelhamid Belkhiri, Allaeddine Athmani

Abstract:

The objective of this paper is to evaluate the effects of soil-structure interaction (SSI) on the modal characteristics and on the dynamic response of current structures. The objective is on the overall behaviour of a real structure of five storeys reinforced concrete (R/C) building typically encountered in Algeria. Sensitivity studies are undertaken in order to study the effects of frequency content of the input motion, frequency of the soil-structure system, rigidity and depth of the soil layer on the dynamic response of such structures. This investigation indicated that the rigidity of the soil layer is the predominant factor in soil-structure interaction and its increases would definitely reduce the deformation in the R/C structure. On the other hand, increasing the period of the underlying soil will cause an increase in the lateral displacements at story levels and create irregularity in the distribution of story shears. Possible resonance between the frequency content of the input motion and soil could also play an important role in increasing the structural response.

Keywords: Direct method, finite element method, foundation, R/C frame, soil-structure interaction.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1108454

References:

[1] The Boumerdes, Algeria, Earthquake of May 21, 2003 EERI Learning from Earthquakes Reconnaissance Report October 2003 Earthquake Engineering Research Institute 2003-04.
[2] P. C. Jennings and J. Bielak, “Dynamics of building-soil interaction,” Bulletin of the Seismological Society of America; 1973, 63: 9-48.
[3] J.P. Wolf, Dynamic soil-structure interaction. Prentice Hall. 1985.
[4] G. Gazetas, “Analysis of machine foundation vibrations: state of the art,” J. Soil Dynamics and Earthquake Engng., 1983, 2, 2-42.
[5] R. J. Apsel and J. E. Luco, “Impedance Functions for Foundations Embedded in a Layered Medium: An Integral Equation Approach,” Earthquake Engng. and Struct. Dynamics, 1987, 15, 213-231.
[6] K. Baba, K. Park and N. Ogava, “Soil-structure interaction systems on the base of the ground impedance functions formed in to a chain of impulses along the time axis,” Proceeding of the eleventh world conference on earthquake engineering. Acapulco, Mexico. 1996.
[7] J.P. Wolf, and C. Song. Finite Element Modelling of Unbounded Media. West Sussex: John Wiley & Sons. 1996.
[8] L. Menglin, and W. Jingning, “Effects of Soil-Structure Interaction on Structural Vibration Control,” Dynamic Soil-Structure Interaction: Current Research in China and Switzerland, ed. Z. Chuhan & J.P. Wolf, Elsevier Science, Amsterdam, 189-202. 1998.
[9] R. B. J. Brinkgreve, et al., “Plaxis Finite Element Code for Soil and Rock Analyses,” Delft University of Technology, The Netherlands, 1998.
[10] J. Lysmer, R. L. Kuhlmeyer, “Finite Dynamic Model for Infinite Media,” ASCE J. of the Eng. Mech. Div., 1969, pp. 859-877.
[11] J. M. Rosset, E. Kausel, “Dynamic Soil-Structure Interaction,” Proc. Second International Conference on Numerical Methods in Geomechanics, Blacksburg, Virginia, 1976, V 2, 3-19.