Evaluation of soil-structure interaction effects for high-rise buildings on layered soil: A case study

Document Type : Original Article

Authors

1 M.sc student, Department of civil engineering, Razi University, Kermanshah, Iran

2 Associate Professor, Department of Civil Engineering, Razi University, Kermanshah, Iran

Abstract

The increasing construction of high-rise structures in cities and the placement of buildings on soils with different layers show the need for engineers to pay attention to the effect of different conditions of soil layers on the seismic response of structures. In this study, after validating the 3D numerical model using the previous shaking table test, the effect of soil layering on the seismic response of resistant concrete buildings has been investigated by considering the soil-structure interaction (SSI). Using Abaqus finite element software, a set of numerical modeling for a 15-story building placed on layered soil with different values of shear wave velocity has been simulated. Nonlinear dynamic analysis under seismic motion has been performed in a direct way and the results have been compared and discussed in terms of maximum lateral deflection, shear force, and inter-story drifts of floors. The results showed that the deeper the soil layer with the lower shear wave speed and the closer it is to the ground surface, the higher the values of lateral deflection and shear force and the inter-story drifts. Also, according to the results, soil layering has a major contribution to the seismic response of buildings by considering SSI, and considering the soil-structure interaction ensures the safe and economical design of structures.

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History

  • Receive Date: 05 May 2023
  • Revise Date: 05 July 2023
  • Accept Date: 11 July 2023

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