Civil Engineering Association

SHORT COMMUNICATION Influence of the soil–structure interaction on the fundamental period of buildings

Author: Louay Khalil , Marwan Sadek , , and Isam Shahrour | Size: 0.16 MB | Format: PDF | Quality: Unspecified | Publisher: EARTHQUAKE ENGINEERING AND STRUCTURAL DYNAMICS Earthquake Engng Struct. Dyn. 2007; 36:2445–2453 Published online 2 August 2007 in Wiley InterScience. DOI: 10.1002/eqe.738 | Year: 2007 | pages: 9

This paper includes an investigation of the influence of the soil–structure interaction (SSI) on the fundamental period of buildings. The behaviour of both the soil and the structure is assumed to be elastic. The soil-foundation system is modelled using translational and rotational discrete springs. Analysis is first conducted for one-storey buildings. It shows that the influence of the SSI on the fundamental frequency of building depends on the soil–structure relative rigidity Kss. Analysis is then extended for multi-storey buildings. It allows the generalization of the soil–structure relative rigidity Ks to such complex structures. Charts are proposed for taking into account the influence of the SSI in the calculation of the fundamental frequency of a wide range of buildings.

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