A TRIAL ANALYSIS AND DESIGN OF A PROPOSED AIRPORT HANGAR

A CASE STUDY OF EXTREMELY, LONG-SPAN TRUSS SYSTEMS

Abstract

This research work explores the details involved in the structural analysis and design of extremely, long-span truss system, through a trial design of a 150m clear span, truss system proposed for an aircraft hangar.  It focuses on 3D, built-up, self-supporting, truss system, using light-weight pipes of high strength steel. Key factors put into consideration before developing a 2 dimension (2D) plan of the 150m by 80m hangar include: the load bearing capacity of the in-situ soil to house the hangar structure, the governing load case, the utilization of the hangar space, which comprises of working areas, aircraft parking space, storage space, office spaces, rest rooms and locker areas, also part of the major criteria that dictates the size of the hangar is the size of the aircrafts it’s intended to accommodate and in this research, two Boeing 747 aircrafts was considered. The design and analysis was done using Autodesk Robot Structure software 18. The governing load combination was in line with the Eurocode. The individual trusses were spanned at a distance of 13m perpendicularly over the 80m and horizontal bracings on both trusses at the sides and at the top were introduced to provide lateral stability from the governing wind load.