Soil Structure Interaction Analysis of a Single Layer Latticed Geodesic Dome

<h2>Abstract</h2>\n<p><strong>Objectives:</strong> To analyze the soil structure interaction (SSI) behaviour of a geodesic dome for in situ soil conditions by using the response spectrum method (RSM). <strong>Methods:</strong> 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. <strong>Findings:</strong> 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. <strong>Novelty:</strong> 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.</p>\n<p><strong>Keywords:</strong> Soil structure Interaction; geodesic dome; response spectrum method; SAP2000; dynamic behaviour</p>