Structural, daylighting, and energy performance of perforated concrete shell structures

Emami, Niloufar; Giles, Harry; Buelow, Peter von

doi:10.1016/j.autcon.2020.103249

Cited by 9 publications

(6 citation statements)

References 14 publications

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“…The environmental simulation and optimization used reduced the UTCI and resulted in an improvement of thermal comfort of 3.9, 7.4, and 3.1 • C at 8, 12, and 16 h, respectively, in the summer and 1.4, 3.5, and 2 • C at 8, 12, and 16 h, respectively, in the winter. Emami et al [25] used a computational approach to integrate the assessment of structural and environmental performance of a perforated concrete shell structure in the context of Boston, MA, USA. The approach was intended to answer the question of how design parameters affect performance and what the tradeoff is between performance.…”

Section: Form-finding and Optimization In Architectural Designmentioning

confidence: 99%

“…Even though some research has been utilizing parametric design and MOO to conduct form finding to find the best solution related to design goals, the approach that is applied to hyperboloid wooden structures combining structural and daylight performance objectives is still limitedly reported. Thus, this research is aimed at exploring the potential of the implementation of the parametric design processes in the early design phase of the build of a two-story hyperboloid wooden house made of Japanese cedar to help the designer in decision making and design while considering structural and daylight optimization [25]. In addition, the intention behind the exploration is to design a structure for a two-story hyperboloid wooden house made of Japanese timber, 105 mm × 105 mm × 4000 mm, which has a structural and aesthetic function, through parametric design in the early steps of the design process, answering the following questions:…”

Section: Aims and Objectivesmentioning

confidence: 99%

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Design Optimization of Hyperboloid Wooden House Concerning Structural, Cost, and Daylight Performance

2022

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The use of parametric and multi-objective optimization (MOO) as a new way of approaching architectural design has been growing in line with current breakthroughs in computational architecture. Wood, on the other hand, is a living and unique building material that provides durability, manufacturing flexibility, and local availability. One of the structure types that provides high structural stability is the hyperboloid. However, the exploration of hyperboloid structures in building design, together with the building daylight objective, is still limitedly reported. This paper presents the application of the parametric approach and multi-objective optimization in optimizing the structure and daylight objectives of a hyperboloid two-story wooden house in Japan, made of 105 mm × 105 mm × 4000 mm Japanese timber. The method involves iterating dynamic parameters such as radius bottom, offset distance, timber members, twisting level, building height, radius-top, and roof slope to optimize the structural objective of minimizing normal force average, displacement, and cost while simultaneously maximizing building volume. Regarding daylight objectives, unit movement and glazing ratio that control the glazing strategies were explored to optimize useful daylight illumination (UDI) in summer and winter. The optimization and exploration yielded 10,098 solutions in structural analysis and 406 solutions in daylight exploration. Based on the data analysis, the proposed methodology has successfully produced the best design solution, discovering the balance between the objective trade-offs. In addition, the most influential parameter that shapes the value of design objectives has been identified. The findings of this research were expected to contribute to and enhance the performance-based design optimization, and support design decision-making process in the early design stage of a wooden house with a hyperboloid structure.

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Section: Form-finding and Optimization In Architectural Designmentioning

confidence: 99%

Section: Aims and Objectivesmentioning

confidence: 99%

Design Optimization of Hyperboloid Wooden House Concerning Structural, Cost, and Daylight Performance

2022

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“…An algorithm implemented in Python systematically subtracted apertures from the shell surface to perforate it in various zones. The details of variables in the parametric model 44 and the python script 45 have been previously explained. The parameters implemented in the model are summarized in Table 1.…”

Section: Creating a Search Space Using Parametric Modeling And A Solu...mentioning

confidence: 99%

“…33 A more comprehensive review is available from this article. 34 A balance must be struck between the ratio of openings that provide ample daylight, the potential resulting glare, and the structural integrity of the system. Some studies take on a multidisciplinary performance assessment approach by considering daylight and/or energy performance on top of structure using parametric modeling.…”

Section: Introductionmentioning

confidence: 99%

Disregarded solution spaces: A proposed approach to draw connections between computationally generated solution spaces and actual built case studies

Emami

2020

International Journal of Architectural Computing

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Many computational studies generate an array of solutions for a design problem paired with their structural or daylighting performance. An enormous investment of effort and computational time is required to create these simulation-based datasets. However, the generated data is usually bound to the specific case studies they were created to explore. Can this data be useful for application to other design cases? This study employed a generative algorithm to fill a database with perforated shell structures covering a courtyard. A shell by Heinz Isler was chosen to be mapped onto the generated solution space based on its performance. The study found that this method is effective for predicting daylight performance, while structural performance modifications can be a source of inspiration for designing other structural forms.

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“…It is difficult to use specific data in the analysis of the performance and functionality of specific concrete materials. For example, the energy of concrete material varies according to levels of technology, production conditions, and so on [9]. e intuitionistic linguistic number (ILN) is an effective way to resolve these issues, and it has been frequently used in different fields [10], e.g., energy performance contracting [11], strategy decisions [12], the selection of offshore wind farms [13], and assessment of green building insulation materials [14].…”

Section: Introductionmentioning

confidence: 99%

The ILHWLAD-MCDM Framework for the Evaluation of Concrete Materials under an Intuitionistic Linguistic Fuzzy Environment

Chen

Zhang

et al. 2020

Journal of Mathematics

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Concrete, one of the sources of energy consumption and carbon emissions, is widely used in the construction industry. The selection of concrete materials raises the question of energy sustainability and turns it into a complex multicriteria decision-making (MCDM) issue. To address this, we present an MCDM framework based on the intuitionistic linguistic hybrid weighted logarithmic averaging distance (ILHWLAD). To begin with, the intuitionistic linguistic numbers are used to deal with the uncertainty and fuzziness of the decision-making process. In addition, in view of the significance and the ordered position of the input arguments, an intuitionistic linguistic hybrid weighted logarithmic averaging distance (ILHWLAD) operator is defined. We, then, initiate the criteria system and present the MCDM framework based on the ILHWLAD to select the finest concrete. A case study involving four alternative materials, namely, autoclaved aerated concrete (AAC), hollow concrete blocks (HCB), expanded polystyrene (EPS), and lime hemp concrete (LHC), is presented to verify the scientificity of the framework.

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Structural, daylighting, and energy performance of perforated concrete shell structures

Cited by 9 publications

References 14 publications

Design Optimization of Hyperboloid Wooden House Concerning Structural, Cost, and Daylight Performance

Design Optimization of Hyperboloid Wooden House Concerning Structural, Cost, and Daylight Performance

Disregarded solution spaces: A proposed approach to draw connections between computationally generated solution spaces and actual built case studies

The ILHWLAD-MCDM Framework for the Evaluation of Concrete Materials under an Intuitionistic Linguistic Fuzzy Environment

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