Optimisation of Complex Geometry High-Rise Buildings based on Wind Load Analysis

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Abstract

Wind analysis for the structure of buildings is a challenging process. The increasing strength and frequency of wind events due to climate change only add higher demands. In addition, high-rise buildings are growing in number and include many of unconventional shape. Current methods used in practice for calculating structural wind response either do not account for these geometries, such as the Eurocode or are prohibitively time-consuming and expensive, such as physical wind tunnel tests and complex Computational Fluid Dynamics simulations. As such, wind loads are usually only considered towards the end of design. This paper presents the development of a computational method to analyse the effect of wind on the structural behaviour of a 3D building model and optimise the external geometry to reduce those effects at an early design phase. It combines Computational Fluid Dynamics (CFD), Finite Element Analysis (FEA), and an Optimisation algorithm. This allows it to be used in an early design stage for performance-based design exploration in complement to the more traditional late-stage methods outlined above. The method was implemented into a rapid and easy to use computational tool by combining existing plugins in Grasshopper into a single script that can be used in practice on complex shaped parametric high-rise building models. After developing the method and testing the timeliness and precision of the CFD, and FEA portions on case study buildings, the tool was able to output an optimal geometry as well as a database of improved geometric options with their corresponding performance for the wind loading allowing
for performance-based decision-making in the early design phase.
Original languageEnglish
Title of host publicationProceedings of the Symposium on Simulation for Architecture and Urban Design (SimAUD 2020)
EditorsAngelos Chronis, Gabriel Wurzer, Wolfgang E. Lorenz, Christiane M. Herr, Ulrich Pont, Dana Cupkova, Gabriel Wainer
Place of PublicationVienna
PublisherSociety for Computer Simulation International (SCS)
Pages219-226
Number of pages8
ISBN (Electronic)978-1-56555-371-3
Publication statusPublished - 2020
EventSimAUD 2020 (Online): 11th Annual Symposium on Simulation for Architecture and Urban Design -
Duration: 25 May 202027 May 2020

Conference

ConferenceSimAUD 2020 (Online): 11th Annual Symposium on Simulation for Architecture and Urban Design
Period25/05/2027/05/20

Keywords

  • Computational Fluid Dynamics
  • Optimisation
  • Finite Element Analysis
  • Wind engineering
  • Parametric design
  • Computational design

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  • Cite this

    Estrado, E., Turrin, M., & Eigenraam, P. (2020). Optimisation of Complex Geometry High-Rise Buildings based on Wind Load Analysis. In A. Chronis, G. Wurzer, W. E. Lorenz, C. M. Herr, U. Pont, D. Cupkova, & G. Wainer (Eds.), Proceedings of the Symposium on Simulation for Architecture and Urban Design (SimAUD 2020) (pp. 219-226). Society for Computer Simulation International (SCS).