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Funicularity through External Posttensioning: Design Philosophy and Computational Tool
| 题名： | Funicularity through External Posttensioning: Design Philosophy and Computational Tool |
| 正文语种： | 英文 |
| 作者： | Leonardo Todisco; Hugo Corres Peiretti;Caitlin Mueller |
| 作者单位： | Polytechnic Univ, of Madrid;Massachusetts Institute of Technology |
| 关键词： | Equilibrium; Graphic statics; Structural design; Posttensioning system; Funicular structures; Design methods; Analysis and computation. |
| 摘要： | Funicular geometries, which follow the idealized shapes of hanging chains under a given loading, are recognized as materially efficient structural solutions because they exhibit no bending under design loading, usually self-weight. However, there are circumstances in which nonstructural conditions make a funicular geometry difficult or impossible. This paper presents a new design philosophy, based on graphic statics, that shows how bending moments in a nonfunicular two-dimensional curved geometry can be eliminated by adding forces through an external posttensioning system. An interactive parametric tool is introduced for finding the layout of a posttensioning tendon for any structural geometry. The effectiveness of this approach is shown with several new design proposals. DOI: 10.1061/(ASCE)ST.1943-541X.0001416. © 2015 American Society of Civil Engineers. |
| 出版日期： | 2016.02 |
| 出版年： | 2016 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.142 |
| 期： | NO.02 |
| 页码： | 04015141 |
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