ANALYSIS AND DESIGN OF STEEL SUPPORTING STRUCTURE FOR CHIMNEY

Abstract

Industries like power, cement, and chemical plants increasingly use tall chimneys for pollution control, which face strong wind and seismic forces, demanding stable and durable support systems. Steel Supporting structures are fundamental components in various industrial systems, especially for tall installations such as chimneys, towers and stacks. This study focuses on developing a safe, economical and efficient steel framework for chimney capable of withstanding gravity loads, wind loads and seismic loads as per the Indian standards. Conventional open sections such as Channel Sections and Angle sections are initially used in the model and then replaced with hollow sections to evaluate their structural efficiency and weight advantages and presents a comparative structural analysis of four distinct supporting frame models designed as a chimney support structure located in Bhuvaneswar, using STAAD.Pro as the primary analysis tool. The comparison of these four models illustrates the trade-offs between different steel section profiles in terms of structural weight, member efficiency, and potential fabrication complexity. CHS-based structures, though more complex in connection design, offer superior material savings and aesthetic advantages. The findings guide structural engineers in developing economical, efficient, and reliable chimney support systems with modern hollow steel sections. This study demonstrates the potential for material savings of up to 24% by transitioning from traditional ISMC to hollow steel sections, promoting sustainable and efficient structural design practices.