Optimization of piled foundations An optimization study to reduce embodied carbon using parametric design tools

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dc.contributor.authorSTIGENBERG, ANNA
dc.contributor.authorLINDQVIST, JOHAN
dc.contributor.departmentChalmers tekniska högskola / Institutionen för arkitektur och samhällsbyggnadsteknik (ACE)sv
dc.contributor.departmentChalmers tekniska högskola / Institutionen för arkitektur och samhällsbyggnadsteknik (ACE)en
dc.contributor.examinerFernandez, Ignasi
dc.date.accessioned2023-08-15T08:36:13Z
dc.date.available2023-08-15T08:36:13Z
dc.date.issued2023
dc.date.submitted2023
dc.description.abstractToday, approximately 11% of the global carbon dioxide emissions are connected to the construction industry, including manufacturing of materials. Due to a continuing global population growth, these values are expected to increase beyond the already high emission levels. A way to reduce construction emissions is to opt for materials with low embodied carbon to replace conventional materials like steel and concrete. However, for building foundations, material strength and durability are critical factors and the freedom of selecting alternative materials is therefore more restricted. Instead, engineers need to strive to optimize the foundation structure to minimize the carbon emissions. Because of the great portion of material used in foundations, a large decrease of the total carbon emissions for a large variety of structures could be expected by material optimizing the foundation alone. This thesis investigates on material optimization of piled foundations by utilizing computational tools and optimization algorithms, with the purpose to guide structural engineers to create more CO2-efficient structures. More specifically, it explores how various structural parameters influence the need for material in a piled foundation. The main results, also summarized in a guideline, includes suggestions on optimal pile center-to-center distances and slab thicknesses for different imposed loads and foundation types. The results also includes comparisons between one-way and two-way foundation slabs, concrete and steel piles, concrete classes as well as a comparison to common practice in the industry. The thesis concludes that there are possibilities within the design process for engineers to significantly decrease the embodied carbon content of piled foundations. The most important aspects are to reduce the slab thickness, select the pile center-to center distances to fully utilize the slab, followed by designing the piles accordingly. The carbon optimized design shows potential to save up to 52% of embodied carbon compared to mean values from common practice in the industry.
dc.identifier.coursecodeACEX30
dc.identifier.urihttp://hdl.handle.net/20.500.12380/306823
dc.language.isoeng
dc.setspec.uppsokTechnology
dc.subjectoptimization, evolutionary algorithms, computational tools, parametric design, sustainability, embodied carbon, piled foundation, design guideline, life cycle analysis, grasshopper
dc.titleOptimization of piled foundations An optimization study to reduce embodied carbon using parametric design tools
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster's Thesisen
dc.type.uppsokH
local.programmeStructural engineering and building technology (MPSEB), MSc
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