Study of Pushover Analysis on RC Framed Structure with Underground Structure Considering the Effects of Soil Structure Interaction

  • Nasala Dongol Kathmandu University, Dhulikhel
  • Prachand Man Pradhan Department of Civil Engineering, Kathmandu University, Dhulikhel
  • Suman Manandhar Global Institute of Interdisciplinary Studies (GIIS), Kathmandu
Keywords: Soil structure interaction (SSI), Pushover analysis (PA), Soil stiffness, Performance points, Spring modelling

Abstract

This study states that the effects of soil structure interaction on the Reinforced Concrete (RC) framed structures is directly influenced by the soil properties of the site. Here, one preexisting structure is taken for the study. The building is a hospital building with two underground basements. Taking into account the actual soil condition of building site, this study provides idea on the soil structure interaction on the structure The properties of springs are calculated from different standard penetration test (SPT) values, Poisson’s ratio and elasticity of soil along the depth of the soil. Entire soil-foundation-structure system is modelled and analyzed using spring approach. Static analysis, response spectrum analysis and pushover analysis (PA) are done in order to find the variations in natural periods, base shears and deflections of the structures by incorporating soil flexibility as compared to structures with conventional fixed base. Pushover analysis is done to evaluate the performance of the structure when modelled in fixed base and spring base system.

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Author Biographies

Prachand Man Pradhan, Department of Civil Engineering, Kathmandu University, Dhulikhel

Head of Department 

Suman Manandhar, Global Institute of Interdisciplinary Studies (GIIS), Kathmandu

Research Fellow

Published
2020-11-12
How to Cite
Dongol, N., Pradhan, P., & Manandhar, S. (2020). Study of Pushover Analysis on RC Framed Structure with Underground Structure Considering the Effects of Soil Structure Interaction. Journal of Science and Engineering, 8, 22-29. https://doi.org/10.3126/jsce.v8i0.32859
Section
Research Article