This paper presents a comprehensive investigation into the seismic performance of a G+5 reinforced concrete spaceframe subjected to pushover analysis. The analysis incorporates the critical influence of soil-structure interaction on varying slope inclinations. A nonlinear static pushover method is utilized to examine the lateral loading strength and deformation response of the spaceframe under various slope scenarios. Instead of the usual spring-type models, a more complex Monkey Tail model is used to describe the behaviour of the soil. This model incorporates the inherent nonlinearities and hysteretic properties of soil subjected to seismic excitation. These sample results are carefully contrasted with a fixed-base analysis to quantify the actual effect of soil-structure interaction on the response of the spaceframe. Thus, the objective of this study is to clarify this issue by investigating the effects of slope variations on capacity curve, key failure mechanisms and displacement demands on the structure. Engineers can benefit greatly from the knowledge gained from this study when building spaceframes in seismically active areas with sloping terrain. Engineers can improve structural safety and performance assessments by using the Monkey Tail model to reflect soil-structure interaction more realistically.
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