Cost-Effective Earthquake-Resistant Design of Industrial Steel Structure

Developing nations such as India require large-scale industrialization for faster economic growth. Every industry requires the establishment of large-scale structures for various purposes. Large-scale structures require large amounts of construction materials such as steel and concrete. In general, the conventional method of design and analysis is followed by a large safety factor for this type of industrial structure. Consequently, cost-effectiveness is not considered in a detailed investigation. If proper scientific measures are considered, the same structure can be made more economical and safer. In this study, an industrial steel structure consisting of four bunkers of 726 m3 to store the solid fuel and flux is analyzed. The two bunkers store solid fuel, and the other two store fluxes. The plan dimensions and elevation of the structure are (21 × 15) m2 and 36 m, respectively. Wind load calculations are performed as per IS 875 Part 3. Equivalent static method is used to calculate the seismic load. The seismic zone is taken as 3. The response reduction and importance factors are set to four and 1.5, respectively. The damping of the structure is assumed to be 5%. A modal analysis of the structure is also performed. Modal frequency is matched with different ground motion data. Fast Fourier Transformation is performed on the ground motion data to convert them from the time to the frequency domain. Subsequently, a time history analysis is performed using the most appropriate ground motion data. This industrial structure has been analyzed for various bracing combinations such as X-bracing, V-bracing, and K-bracing. Based on these conditions, the cost-effectiveness of the structure is determined by calculating the Bill of Quantities for different members of this structure.