Dynamic analysis of RCC framed structure considering effect of viscous dampers and base isolation

Abstract

Due to the overall scarcity of space and the rising population, high-rise buildings have become more common. Although we have RCC structure solutions fortall structures, the deadweight of RCC structural components is larger owing to the massive dimension of the building's elements and the great densities of material. Engineers are using a superior structural technology called Steel-Concrete Composite Structure after detecting challenges and hurdles in the high-rise construction sector. Concrete, which is beneficial in carrying compressive loading, and steel, which has good tensile strength, are used to create structural components. The combo of such materials increases the ductility of the structure over RCC constructions. Damping is critical in seismic-resistant construction design. The damping measures lessen approaching oscillations on the superstructure itself, hence preventing destruction. Base isolation (BI) is a widely used approach for shielding structures from the disastrous impacts of earthquakes. The placement of an isolation device at the foundation of a structure greatly extends the natural time period of the structure, reducing the potential of resonance frequency and therefore improving the seismic response of buildings. This study analyzes a G + 10 Story building using composite columns, viscous dampers, and base isolation techniques. The focus of the paper is to check the efficacy of viscous dampers and base isolation techniques for controlling the response of the composite column structure. After doing the study, composite columns and viscous damper combination reduce the Story displacement and drift values but increase the base shear values. But this problem can be omitted by using base isolation in combination with these two. After the study, it’s had been found that a combination of composite columns, viscous dampers, and a base isolation mechanism is highly helpful in controlling the seismic response of the structure.