Etude du poids et de la raideur des treillis Warren, Pratt et Howe

Latteur, Pierre; Samyn, Philippe; Wilde, Patrick De

doi:10.1080/12795119.2000.9692283

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…The analytical expressions of W and D have been established by Samyn [1,6] for some structural typologies: trusses, beams, arches, cables, cable-stayed structures, masts and frames subjected to a limited number of (simple) load cases and supports. Samyn [1] and Latteur [16] and Latteur et al [17][18][19] described the indicator of volume of axisymmetric domes and spatial trusses, but no further research is based on their results up to now.…”

Section: Morphological Indicatorsmentioning

confidence: 99%

“…Later Latteur developed a method to consider the bending moments in the elements due to bending rigidities in imperfectly pinned connections or due to friction. Using the indicator of rotation, the indicator of parasitic constraints and the delta-volume indicator, one can evaluate the additional volume necessary to resist these bending moments for trusses and arches [18,19].…”

Section: Morphological Indicatorsmentioning

confidence: 99%

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Structural optimisation and sustainable design

Wilde¹,

Vandenbergh²,

Debacker³

2015

Int. J. CMEM

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The theory of morphological indicators (MI) provides user-friendly tools guiding the structural designer towards low volume consuming solutions during the exploration and comparison of different structural types. Since a first doctoral thesis published in 1999, a decade of research has refined MI into a benchmarked structural optimisation method for conceptual design. This article surveys the milestones that lead to today's method and contains the published references that contributed to the major evolutions of MI. The article also refers to the work of other researchers in structural and architectural engineering, this time in the quest of optimisation of structures through a more sustainable design, offering the possibility of re-use and recombination of structural components. This technique, called 4D design methodology, was based on a research proposal by Hendrickx and Van Walleghem, which was further developed at Vrije Universiteit Brussel.

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Section: Morphological Indicatorsmentioning

confidence: 99%

Section: Morphological Indicatorsmentioning

confidence: 99%

Structural optimisation and sustainable design

Wilde¹,

Vandenbergh²,

Debacker³

2015

Int. J. CMEM

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Optimisation des arcs funiculaires paraboliques et en chaînette

Latteur

Samyn

Wilde

2001

Revue Française de Génie Civil

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La présente étude compare le poids propre des arcs funiculaires paraboliques ou en chaînette, à partir d'une nouvelle approche basée sur la définition d'indicateurs morphologiques. Ces nombres sans dimension permettent de réduire le nombre de paramètres qui entrent en jeu dans le processus d'optimisation et de produire des courbes universelles propres à une famille d'arcs donnée, utiles au stade de la conception d'un projet. Ces courbes, baptisées « courbes d'efficience », permettent de prédimensionner les arcs, mais aussi d'optimiser et de comparer leur poids propre et de définir leurs élancements optimaux, indépendamment du type de matériau, de sections, de leur portée ou de la valeur des charges appliquées.ABSTRACT. This survey compares the self weight of funicular arches. The comparison is based on a new approach which deals with morphological indicators. Those dimensionless numbers allow to reduce the number of parameters during the process of optimization and to draw universal curves related to a given family of arches, useful at the stage of conception of a project. Those curves, named "curves of efficiency", allow to design arches, but also to optimize and compare their self weight and to define their optimum geometrical slenderness, irrespective of the material, the type of sections, the span or the value of the loads.

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Four-dimensional design and analysis of modular footbridges in developing countries

Pyl

Sitters

2012

WIT Transactions on the Built Environment

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A 4D design approach of a footbridge in steel is presented in this paper. Morphological indicators are applied to select the appropriate typology and to have a first idea about the dimensions. A Warren truss is thus chosen, meeting a broad range of criteria related to the construction and use of these footbridges in developing countries, among other the adaptability in length from 9 m to 24 m, the transformability and movable character of the bridge. The structural analysis, including the design of the joints, is performed according to the design rules in the Eurocodes resulting in a lightweight structure. Much effort is put into the detailing in order to create a modular system with a single component which can be handled by hand and one joint configuration. The assembly is explained.

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Etude du poids et de la raideur des treillis Warren, Pratt et Howe

Cited by 5 publications

References 4 publications

Structural optimisation and sustainable design

Structural optimisation and sustainable design

Optimisation des arcs funiculaires paraboliques et en chaînette

Four-dimensional design and analysis of modular footbridges in developing countries

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