The Optimization of a Truss Facade

Benjamin Verbeeck, Willy De Wilde, Philippe Samyn

Research output: Chapter in Book/Report/Conference proceedingConference paper

1 Citation (Scopus)


This paper presents the study of a facade. One of the aims of the designing
team is the minimisation of the weight of the facade. Due to architectural
constraints, the geometry of the facade is fixed to a highly statically indeterminate
truss. Therefore, the minimisation of the weight of the facade is
limited to a section optimisation. The objective function is the indicator of
volume. Since the number of members is of the order of 1000, exhaustive
search methods are impracticle. We used a simple iterative process to find
optimal sections. In the first iteration all sections are equal. This allows the
forces to flow through the facade as if the facade has a constant stiffness.
In the next iterations sections are adapted to the forces that arize from the
previous iteration. This method quickly converges to an optimal section layout.
The results of this method are corroborated by a genetic algorithm. We
find that the truss facade with optimal sections consumes less material than
an arch with push rods, that transfer the forces to the arch. Furthermore,
the influence of buckling can be ignored.
Original languageEnglish
Title of host publicationHigh Performance Structures and Materials III
EditorsC.a. Brebbia
PublisherWIT Press
Number of pages8
ISBN (Print)1-84564-162-0
Publication statusPublished - 2006
EventFinds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet - Stockholm, Sweden
Duration: 21 Sep 200925 Sep 2009


ConferenceFinds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet

Bibliographical note

C.A. Brebbia


  • optimal design
  • truss


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