Soil Structure Interaction Analysis of a Single Layer Latticed Geodesic Dome

M Roopa; H Venugopal; Jayachandra; Madeva Nagaral

doi:10.17485/IJST/v15i7.35

Article

Soil Structure Interaction Analysis of a Single Layer Latticed Geodesic Dome

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Indian Journal of Science and Technology

DOI: 10.17485/IJST/v15i7.35

Year: 2022, Volume: 15, Issue: 7, Pages: 292-299

Original Article

Soil Structure Interaction Analysis of a Single Layer Latticed Geodesic Dome

M Roopa^1*, H Venugopal¹, Jayachandra ², Madeva Nagaral³

¹Civil Engineering Department, Sri Siddhartha Academy of Higher Education, Tumakuru, Karnataka, India
²Assistant Professor, School of Civil Engineering, Reva university, Bangalore, India
³Aircraft Research and Design Centre, HAL, Bangalore, 560037, India

*Corresponding Author
Email: [email protected]

Received Date:05 January 2022, Accepted Date:28 January 2022, Published Date:22 February 2022

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objectives: To analyze the soil structure interaction (SSI) behaviour of a geodesic dome for in situ soil conditions by using the response spectrum method (RSM). Methods: An existing geodesic dome of diameter 31m and a total height of 23.6 m is modeled using SAP2000, and the model is evaluated for the soil structure interaction. The existing geodesic dome structure falls under seismic zone II according to IS: 1893-2016, so the in-situ soil properties of the structure are considered to design the soil springs. Findings: Base shear in SSI condition observed 3.72 % lesser compared to the nonSSI conditions and natural time period, has been increased to 60.8% compared to nonSSI as it affirms the flexibility of the geodesic dome. Novelty: The present study aims to evaluate the dynamic behavior of the geodesic dome, which is a nonconventional structure in design and shape. Few investigations were carried out to analyze the soil structure interaction behavior on such structures.

Keywords: Soil structure Interaction; geodesic dome; response spectrum method; SAP2000; dynamic behaviour

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© 2022 Roopa et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Published By Indian Society for Education and Environment (iSee)