Paper Contents
Abstract
Moment-resistant steel frames (MRFs) are widely used globally due to numerous advantages in modern civil engineering construction practices. Their rapid design, faster fabrication and assembly capabilities, availability of practical and artistic shapes of steel sections, high strength, ductility, reliability, and sustainability against adverse conditions contribute to their worldwide acceptance. Steel structures are crucial in the construction industry, especially for seismic performance. The Indian code (IS 800-2007) mandates the design of multi-story steel-framed buildings with various bracings, such as X-braced, diagonally braced, alternately diagonally braced, V-braced, inverted V-braced, and K-braced. A study analyzed the performance of X, K, and V eccentric bracings using the SAP-2000 software package. The study found that braced steel frames significantly reduce lateral displacements, have a shorter modal period, and have higher frequencies. The ductility of a moment-resisting steel frame is affected by its height, and this height dependency of ductility is magnified when bracing systems are included. The findings indicate that lateral displacements experience a notable decrease in braced steel frames. Furthermore, the modal period for various modes of braced steel frames is relatively shorter compared to unbraced frames, with the frequencies of braced steel frames being higher. The ductility of a moment-resisting steel frame is influenced by its height, and this dependency is accentuated when bracing systems are incorporated.
Copyright
Copyright © 2024 Vandana Kumari. This is an open access article distributed under the Creative Commons Attribution License.
