Soil structure interaction for basement system of malty storey building for different soil condition using static analysis in Etabs

International Journal of Civil Engineering
© 2020 by SSRG - IJCE Journal
Volume 7 Issue 6
Year of Publication : 2020
Authors : Mr. Gopal Dabhi, Prof. Vimlesh V. Agrawal, Prof. Vishal B. Patel
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How to Cite?

Mr. Gopal Dabhi, Prof. Vimlesh V. Agrawal, Prof. Vishal B. Patel, "Soil structure interaction for basement system of malty storey building for different soil condition using static analysis in Etabs," SSRG International Journal of Civil Engineering, vol. 7,  no. 6, pp. 71-79, 2020. Crossref, https://doi.org/10.14445/23488352/IJCE-V7I6P109

Abstract:

In the present scenario due to less availability of land, the construction is going in the vertical direction. Due to the higher cost of land as well as lesser availability of land engineers prefer to grow in the vertical direction both upward and downward side. The more use of the ground as a basement or foundation the interaction between soil and foundation of the structure is increased. As we provide deeper foundation sometimes with more number of the base storey the soil-structure interaction is more for the building and neglecting of soil-structure interaction is not conservative for the structure. In the present study the different areas of the basement system, different floor numbers, and different soil conditions like rocky, hard soil, medium soil, and soft soil are considered for dynamic (Time history Analysis) and static-analysis using tabs software. Analysis of the fixed base condition is also carried for the same. The soil is defined as a spring and its spring parameters/ Spring Constants i.e. Shear modulus, Poison’s ratio are calculated as per the FEMA-356 guidelines. For the different soil conditions, various results like Base shear, Base moment, Displacement, Storey drift, and period were compared with the fixed base condition. It is found that for the 3 storey buildings there was no change in any results for the different soil conditions. The 6,9 and 12 storey buildings result from almost the same for the rocky strata, hard strata, and fixed base, and different for Medium and soft soil. As we increasing the basement area the base shear and base moment are decreased, and displacement, storey drift, and period are increases.

Keywords:

Soil-Structure Interaction, Basement System, Time History Analysis, Spring Constant

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