Fragility Comparison for Soft Storey Infill Reduced Structures by Incremental Dynamic Analysis

• Published in: IOP conference series. Earth and environmental science 2023-01, Vol.1130 (1), p.12029
• Main Authors: Vamsi Krishna, B., Veera Reddy, M., Naresh, Vasari, Tanuja, D. V., Sai Bharat, T.
• Format: Article
• Language: English
• Subjects: Dynamic Analysis; Earthquakes; Environmental risk; Fragility; Geological hazards; Ground motion; Height; Infill Walls; MDOF; Redevelopment; SDOF; Seismic activity; Seismic hazard; Seismic surveys; Time history analysis
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/1130/1/012029

A keen understanding of how a structure behaves when it is exposed to earthquake scenarios is required in order to foresee and avert the adverse effects and consequences when such a incident occurs, with the current rate of development in our country the construction of mid and high rise residential apartments are rapidly increasing but the data to understand such structures is insufficient, this data includes seismic vulnerability of structures, hazard maps of earthquake prone areas, seismic risks involved for a structure, this data provides the insight of what magnitude of risks are at hand when a earthquake scenario occurs and how to avert or minimize the losses with those risks [1]. In the present study, an effort is made to determine the behavior of soft Storey structures for various parameters when it is exposed to an earthquake ground motion; this includes the development of models analytically with the existence of soft Storey in them with different infill reductions and analyzing them, two models with varying heights and plot areas are considered for this study, this four models are modeled in such a way that different variations of soft Storey existence depending on the location of walls, percentage of infill reductions among different walls are done, a total of eight variety of models are been analyzed in both the X and Y directions. It is concluded that in all the models the fragility is higher in the models with lower lateral dimensions, as the length of the side decreases the fragility of that side is increasing. The Model without reduction performed efficiently showing less probability to collapse and that height and plan dimensions of the model are dependent on each other for the increase or decrease of fragility in a structure. If the height increases with the same model plan dimensions, the fragility of the structure also increases, if the plan dimension increases the fragility of the structure decreases.