Analysis and Design of an Unsymmetrical Multi-storey building with floating columns in a seismic zone using ETABS

Abstract

Most high-rise structures today are designed with floating columns for aesthetic purposes and the need for efficient use of space. Lattice columns are vertical load-bearing elements that do not extend the entire height of the building, they are usually located on one or more intermediate floors and support beams. These design innovations have benefits such as increased architecture and space allocation. Loads include load and side load. Heavy loads, including dead loads and live loads, are evaluated to determine the overall load distribution. Lateral loads resulting from earthquakes and wind forces are calculated based on local building codes. In seismic design, multistorey buildings with floating columns are analysed at different levels on curved planes to determine safe floating column locations. Structures can be analysed with symmetric information and dynamic analysis methods such as response spectrum or potential time. Preliminary analysis and equivalent static analysis using ETABS 2022. A 3D structural model was created to accurately represent the geometry of the building and its behavior under different load combinations was used to compare the building's response to seismic forces. The result is the behavior of the structure: shear strength, bending moment, deflection, and displacement. The results are obtained in the form of tables and graphs. The structures were built with M30 concrete and various types of steel. Reinforcement spacing and detailing is done in CSI Detail.

Keywords

• dynamic analysis methods
• etabs
• shear forces
• bending moments
• deflections
• floor motions
• seismic forces
• concrete
• reinforcement
• csi details