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Vol. 40 (1999) No. 2 April n. 130

Optimum design of composite space trusses

< Table of Contents for Vol. 40 (1999) No. 2 April n. 130
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 40 (1999) No. 2 April n. 130
  • Title: Optimum design of composite space trusses
  • Author(s): Ahmed I. El-Sheikh
  • Keywords: Space trusses; Composite action; Design
In the search for optimum space trusses, designers need to take several decisions concerning the truss span/depth ratio and number of chord panels. Changing any of these parameters undoubtedly leads to significant influences on truss weight, cost, appearance and hence competitiveness. In an earlier paper1, the question of optimum design of non-composite space trusses was considered. That work is extended in this paper to cover space trusses acting compositely with a top continuum, such as a concrete slab. The work presented is parametric, and covers a large number of practical situations with different aspect ratios and boundary conditions. It is intended to provide clear recommendations concerning the span/depth ratio and number of chord panels associated with the truss optimum weight, which is considered to be closely associated with truss cost. Reference is also made to the number of joints and members employed in space trusses and how it affects the cost competitiveness of these systems.

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