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Vol. 49 (2008) No. 3 December n. 159


Hangai Prize Papers for 2008: Architectural Acoustic and Structural Form

< Table of Contents for Vol. 49 (2008) No. 3 December n. 159
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 49 (2008) No. 3 December n. 159
  • Pages: 181-186
  • Title: Hangai Prize Papers for 2008: Architectural Acoustic and Structural Form
  • Author(s): T. I. Mendez, A. Astolfi, M. Jansen and M. Sassone
  • Keywords: Acoustic Form-finding, Shell Structure, Genetic Algorithm, Design Tools
Abstract
For my final thesis I decided to study the vast potential of surface structures in the field of architecture. I had the idea to create a surface that would not only act as a load bearing roof of a concert hall with a large clear span, but also, this surface was to serve as the main acoustic ceiling in this concert hall. This was the main idea, to have a concrete shell structure not only define the architectural space, but to properly function as a mayor structural and acoustic element in the building. In order to achieve this, important research had to be made on the form this surface was to take. Although the general type of surface was chosen firsthand for architectural reasons (folded concrete shell structure with hyperbolic paraboloid segments), the specific geometry of the shell structure had to be defined by a complex form-finding method. After some preliminary work it became clear that traditional methods of acoustic design and existing acoustic simulation software where insufficient. Special computational acoustic design tools were therefore created inside existing cad software using evolutionary algorithms and acoustic simulation. The final result of the thesis was not only a concert hall complete with the innovative acoustic and structural surface, but also a set of acoustic design tools that can be used in many different projects. This paper reports the process and the methods that gave way to the design of the surface and the tools that created it

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