000218815 001__ 218815
000218815 005__ 20180913063722.0
000218815 020__ $$a978-9-053630-42-6
000218815 037__ $$aCONF
000218815 245__ $$aDesign and exploration of externally post-tensioned structures using graphic statics
000218815 269__ $$a2015
000218815 260__ $$aAmsterdam$$bIASS$$c2015
000218815 336__ $$aConference Papers
000218815 520__ $$aFunicular structures, which follow the shapes of hanging chains, work in pure tension (cables) or pure compression (arches), and offer a materially efficient solution compared to structures that work through bending action. However, the set of geometries that are funicular under common loading conditions is limited. Non-structural design criteria, such as function, program, and aesthetics, often prohibit the selection of purely funicular shapes, resulting in large bending moments and excess material usage. In response to this issue, this paper explores the use of a new design approach that converts non-funicular planar curves into funicular shapes without changing the geometry; instead, funicularity is achieved through the introduction of new loads using external post-tensioning. The methodology is based on graphic statics, and is generalized for any two-dimensional shape. The problem is indeterminate, meaning that a large range of allowable solutions is possible for one initial geometry. Each solution within this range results in different internal force distributions and horizontal reactions. The method has been implemented in an interactive parametric design environment, empowering fast exploration of diverse axial-only solutions. In addition to presenting the approach and tool, this paper provides a series of case studies and numerical comparisons between new post-tensioned structures and classical bending solutions, demonstrating that significant material can be saved without compromising on geometrical requirements.
000218815 6531_ $$aequilibrium
000218815 6531_ $$agraphic statics
000218815 6531_ $$astructural design
000218815 6531_ $$apost-tensioning system
000218815 6531_ $$ageometry
000218815 6531_ $$afunicular structures
000218815 6531_ $$adesign methods
000218815 700__ $$aTodisco, Leonardo
000218815 700__ $$0250066$$aFivet, Corentin$$g265224
000218815 700__ $$aCorres Peiretti, Hugo
000218815 700__ $$aMueller, Caitlin
000218815 7112_ $$aInternational Association for Shell and Spatial Structures (IASS) Symposium 2015$$cAmsterdam, The Netherlands$$dAugust 17-20, 2015
000218815 720_1 $$aCoenders, Jeroen$$eed.
000218815 773__ $$tProceedings of the International Association for Shell and Spatial Structures (IASS) Symposium 2015
000218815 909C0 $$0252578$$pSXL$$xU13216
000218815 909CO $$ooai:infoscience.tind.io:218815$$pconf$$pENAC
000218815 917Z8 $$x265224
000218815 937__ $$aEPFL-CONF-218815
000218815 973__ $$aOTHER$$rREVIEWED$$sPUBLISHED
000218815 980__ $$aCONF