Evolving Optimized Braced Steel Frameworks for Tall Buildings Using Modified Pattern Search

Baldock, Robert John Nicholas; Shea, Kristina; Eley, Damian

doi:10.1061/40794(179)60

Cited by 10 publications

(2 citation statements)

References 10 publications

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“…Such generative approaches have already been applied to an extensive range of designs, starting from shape grammars for visual arts 6 to architectural design like Palladian houses 7 and many more applications. 8 Specifically to the field of generative structural design, the literature includes grammars with rules that integrate functional and structural aspects for houses, 9 towers, 10,11 halls, 12 bridges, 13 trusses, 14,15 or gridshells. 16 Grammars originated with formal grammars from the field of natural language processing with pioneer work of Chomsky in the 1950s.…”

Section: Introductionmentioning

confidence: 99%

A vector encoding for topology finding of structured quad-based patterns for surface structures

Oval,

Mesnil,

Van Mele

et al. 2023

International Journal of Space Structures

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Topology-optimisation strategies for structural design of discrete surface structures result in unstructured patterns that require post-rationalisation to limit the number and complexity of the various structural elements. Fabrication-related objectives still demand further processing. Designers need topology exploration, before topology optimisation, following a generative-design approach that is decoupled from density tuning and shape design, to produce high-quality patterns. Such an approach allows to flexibly embed multiple design constraints, benefit from state-of-the-art form-finding algorithms and explore design trade-offs of the multiple requirements related to architecture, engineering and construction. This research investigates a parameterisation strategy to encode topological exploration of structured patterns based on quad meshes. The focus is set on singular vertices, which connect an irregular number of blocks, cables, or beams. Singularities are independent from pattern density and geometry, and have a fundamental influence on the qualitative and quantitative performance of the structure. We introduce an L-system encoding a quad-mesh grammar into a string that describes topological transformations of these singularities. Design applications to a net and a gridshell demonstrate the influence of singularities on the design of surface structures, and highlight the flexibility and generality of the approach in terms of geometrical processing and performance metrics. Beyond exploration, this parameterisation strategy opens to novel applications of search and optimisation methods for generative design of singularities in structural patterns.

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Section: Introductionmentioning

confidence: 99%

A vector encoding for topology finding of structured quad-based patterns for surface structures

Oval,

Mesnil,

Van Mele

et al. 2023

International Journal of Space Structures

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“…Stochastic element was added to Pattern search algorithm for optimizing the topological design of the bracing system for a free-form building [129]. Ant colony optimisation algorithm (ACO) was used to search for a trade-off between light intake, thermal performance, view, and cost for a panelled building envelope for a media centre in Paris [130].…”

Section: Bpo Objectives (Single-objective and Multi-objective Functions)mentioning

confidence: 99%

Assessing gaps and needs for integrating building performance optimization tools in net zero energy buildings design

Attia

Hamdy

O’Brien³

et al. 2013

Energy and Buildings

357

192

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This paper summarizes a study undertaken to reveal potential challenges and opportunities for integrating optimisation tools in Net Zero Energy Buildings (NZEB) Design. The paper reviews current trends in simulationbased Building Performance Optimisation (BPO) and outlines major criteria for optimisation tools selection and evaluation. This is based on analyzing user's needs for tools capabilities and requirement specifications. The review is carried out by means of a literature review of 165 publications and interviews with 28 optimisation experts. The findings are based on an inter-group comparison between experts. The aim is to assess the gaps and needs for integrating BPO tools in NZEB Design. The findings indicate existing limitations including model uncertainty, computation time, difficulty of use and steep learning curve. Some future directions anticipated or needed for improvement of current tools are presented.

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Structural Topology Optimization of Braced Steel Frameworks Using Genetic Programming

Baldock¹,

Shea²

2006

Lecture Notes in Computer Science

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Evolving Optimized Braced Steel Frameworks for Tall Buildings Using Modified Pattern Search

Cited by 10 publications

References 10 publications

A vector encoding for topology finding of structured quad-based patterns for surface structures

A vector encoding for topology finding of structured quad-based patterns for surface structures

Assessing gaps and needs for integrating building performance optimization tools in net zero energy buildings design

Structural Topology Optimization of Braced Steel Frameworks Using Genetic Programming

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