Seismic Retrofitting of Industrial Steel Buildings

Abstract

Nowadays, the use of earthquake-resistant technologies, particularly seismic dampers, is on the rise. This is because, if appropriately put, these devices serve their role well and help to make the structure seismically strong by reducing the amplitude of vibration and acceleration. In this approach, the occupants are provided with increased safety while simultaneously saving money. This project report presents the seismic retrofitting strategy that can be adopted and this goal can be achieved by evaluating the performance of building and based on this, the seismic demand of the structure is known and the retrofitting strategy can be implemented. To achieve this objective, literature survey is carried out for different retrofitting strategies used worldwide. From the literature, the benchmark 20 storey SAC steel building is formulated with the help of MATLAB programme and understanding developed. Then the 20 Storey Steel Building is modelled using Etabs and is analysed for the Nonlinear Static Analysis to get the Capacity Spectra and the Demand Spectra based on which the performance point of the building is obtained. And the performance of building is compared with the acceptance criteria as given by American Standard Code. After this the buildings seismic demand i.e., the displacement demand is obtained. Based on the demand, retrofitting strategies like damping systems are adopted and building performance is evaluated to obtain the satisfying results. To get the clarity of different aspects like modelling, analysing and retrofitting strategy to be adopted for deficiency, ten storey RC building is analysed, studied and simulated with Benchmark 20 storey building to overcome the design challenges.