Computational Design and Experimental Behaviour of Deployable Mass Timber Arches

Alava, Kevin B. Plasencia; McCann, Lee K.; Hodge, Gabrielle; Baber, Kim; Gattas, Joseph M.

doi:10.20898/j.iass.2019.199.030

Cited by 3 publications

(3 citation statements)

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“…First, a strategy to machine curved inventory segments from straight stock material was adapted based on the technique utilized by the authors in [19]. With reference to Fig.…”

Section: Part Assignment Heuristicmentioning

confidence: 99%

Inventory constrained design of a timber funicular structure

et al. 2020

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This research investigates the development of a digital form finding model that combines the generation of funicular geometry with a material inventory constraint. The model provides a flexible design tool that facilitates exploration of structural form whilst simultaneously satisfying two rationalizing criteria. It maintains an equilibrated structure derived from funicular geometry; and optimises the assignment of a unique inventory of timber members having natural dimensional variation. The combined goal for the design outcome is to achieve material efficiency through both structurally rational form and minimization of material waste. The material chosen for the inventory is utility-grade sawn timber, being lightweight but with high levels of naturally occurring structural variability. Sawn timber boards that are rejected for structural applications due to frequent structural defects (knots, checks, splits etc.) represent up to 50% of the sawn product produced by Australian sawmills, and are destined for under-valued non-structural use, chipping or burning. Yet these boards can readily yield usable short length structural members, once defects are removed. In doing so, the process creates a unique inventory of random short members. These short members are well suited to articulated structures, which, by employing an inverted funicular geometry, only incur axial stresses and can employ simple (non-moment resisting) timber connections. This form finding tool and a first prototype pavilion are proofs of concept for viable structural application of what is otherwise a significant source of waste in the timber industry.

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“…First, a strategy to machine curved inventory segments from straight stock material was adapted based on the technique utilized by the authors in [19]. With reference to Fig.…”

Section: Part Assignment Heuristicmentioning

confidence: 99%

Inventory constrained design of a timber funicular structure

et al. 2020

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“…37 Self-locking linkages with an independent locking mechanism for each bar have also been proposed, but they are quite complex and therefore expensive, Lee. 38 Another interesting model of selflocking joints in wood has been proposed by Alava et al 39 Finally, some interesting proposals can be mentioned, although they are limited because they can only include two bars, Jin, 40 Daws 41 or Hujsak and Stoker. 42 In our best knowledge, no other architectural or civil engineering application of such deployable space grids concept exists today.…”

Section: Introductionmentioning

confidence: 99%

Deployable space grids with lockable joints

Pérez-Valcárcel

Muñoz-Vidal

César

et al. 2021

International Journal of Space Structures

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The use of deployable structures in architecture began in the 1960s, based on the pioneering work of Emilio Pérez Piñero. It has had an interesting development using bundle or scissor modules, but with solutions that are always based on through-bolted joints. In this document, a new system for deployable space grids is proposed. This new system is based on the use of self-lockable joints, opening up a new and interesting field of design possibilities. The resulting space grids can be deployed by means of joints arranged on the bars that have a self-locking mechanism which is engaged in the final open position. This configuration overcomes the significant buckling that is characteristic of deployable structures with through-bolted joints. Different solutions are proposed for various uses, and the data from the theoretical and experimental analysis are provided.

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“…Recent development however has focused on folded structures with more complex geometric plate arrangements which can offer additional advantageous performance characteristics [1,2,3]. Deployable folded plate structures utilise folded plate arrangements with kinematic behaviours that allow for a very high speed of erection [4,5,6,7]. Modular and prefabricated folded plate structures utilise repetitious or rationalised folded plate arrangements to introduce cost-effective manufacture and streamlined assembly [8,9,10].…”

Section: Introductionmentioning

confidence: 99%