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Investigating relationships between cost and CO2 emissions in reinforced concrete structures using a BIM-based design optimisation approach

Eleftheriadis, E; Duffour, P; Greening, P; James, J; Stephenson, B; Mumovic, D; (2018) Investigating relationships between cost and CO2 emissions in reinforced concrete structures using a BIM-based design optimisation approach. Energy and Buildings , 166 pp. 330-346. 10.1016/j.enbuild.2018.01.059. Green open access

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Abstract

An integrated design approach for the cost and embodied carbon optimisation of reinforced concrete structures is presented in this paper to inform early design decisions. A BIM-based optimisation approach that utilises Finite Element Modelling (FEM) and a multi-objective genetic algorithm with constructability constraints is established for that purpose. A multilevel engineering analysis model is developed to perform structural layout optimisation, slab and columns sizing optimisation, and slab and columns reinforcement optimisation. The overall approach is validated using real buildings and the relationships between cost and carbon optimum solutions are explored. The study exhibits how cost effective and carbon efficient solutions could be obtained without compromising the feasibility of the optimised designs. Results demonstrate that the structural layout and the slab thickness are amongst the most important design optimisation parameters. Finally, the overall analysis suggests that the building form can influence the relationships between cost and carbon for the different structural components.

Type: Article
Title: Investigating relationships between cost and CO2 emissions in reinforced concrete structures using a BIM-based design optimisation approach
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.enbuild.2018.01.059
Publisher version: https://doi.org/10.1016/j.enbuild.2018.01.059
Language: English
Additional information: Copyright © 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license. (http://creativecommons.org/licenses/by/4.0/).
Keywords: BIM, FEM, Cost, Embodied Carbon, RC structures, Optimisation
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/10042200
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