Freeform Supertall Buildings

Ilgın, Hüseyin Emre; Karjalainen, Markku

doi:10.13189/cea.2023.110233

Cited by 10 publications

(10 citation statements)

References 18 publications

(29 reference statements)

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“…Since a supertall building is feasible by the structure itself, the structural system is the most important design parameter, and many planning criteria depend on the structural system in terms of its performance (Ilgın, 2018). The selection of an optimal building structural system is also critical to improving building construction (Chakraborty et al, 2020;Zhong et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

A study on interrelations of structural systems and main planning considerations in contemporary supertall buildings

Ilgın

2022

IJBPA

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PurposeThe aim of the study is to provide a comprehensive understanding of interrelations of structural systems and main planning considerations in supertall buildings (≥300 m).Design/methodology/approachData were collected from 140 contemporary supertall towers using the case study method to analyze structural systems in the light of the key design considerations to contribute to the creation of more viable supertall building projects.Findings Central core typology, outriggered frame system, composite material and tapered prismatic and free forms were the most preferred features in supertall building design. Shear walled frame and tube systems occurred mostly in the 300–400 m height range, while outriggered frame systems were in the range of 300–600 m in height. Asia, the Middle East and North America mainly preferred outriggered frame systems, followed by tube systems. Considering the building function and form, the most preferred structural system in each of these groups was outriggered frame system, while mixed-use function stood out in all structural systems except in shear walled frame system.Originality/valueTo date, there has been no comprehensive study in the literature of the interrelations of structural systems and important planning considerations in the design of contemporary supertall towers through a large set of study samples. This critical issue was multidimensionally explored in this paper in light of 140 detailed case studies of supertall buildings around the world.

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Section: Introductionmentioning

confidence: 99%

A study on interrelations of structural systems and main planning considerations in contemporary supertall buildings

Ilgın

2022

IJBPA

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“…However, it has a great impact on the identity of the supertall building. In this paper, building form classification (Figure 3) is based on the 'main body' pattern [34,35].…”

Section: Methodsmentioning

confidence: 99%

Review on Supertall Building Forms

Ilgın¹

2023

cea

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To date, few studies have provided an understanding of the interrelations between forms and key design parameters in supertall towers (equal to or higher than 300 m). This vital topic was examined through data collected from 140 supertall cases, considering height, location, function, load-bearing system, and material as the main parameters. Key findings of the paper highlighted the following: (i) in 300-399 m high towers, mostly prismatic, setback, tapered, and free forms were used; (ii) tapered forms were generally preferred in Asia, while the prevalence of prismatic and free forms was noted in the Middle East; (iii) while tapered form was preferred most in mixed-use function, office towers were generally built in free form; (iv) prismatic and tapered forms were generally utilized in supertall cases with tube system, whereas tapered and free forms were utilized more in towers with outriggered frame system; (v) while reinforced concrete was commonly used in prismatic and setback towers, tapered and free tower forms were mostly built in composite. This paper is considered to be an initial guideline for key project and construction stakeholders.

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“…The methodology employed in this study involved a case study approach to gather data on Asian supertall towers in order to examine space efficiency. This method is widely used in the assessment of built-environment projects, providing a means to collect both quantitative and qualitative data (Tulonen et al ., 2021; Saarinen et al ., 2022; Rinne et al ., 2022; Ilgın and Karjalainen, 2023). A total of 75 supertall cases from Asia were included in the analysis.…”

Section: Methodsmentioning

confidence: 99%

An analysis of space efficiency in Asian supertall towers

Ilgın

2023

IJBPA

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PurposeSupertall towers (300 m+) offer a viable solution to the increasing demand for housing and commercial space caused by rapid urban growth, migration from rural to urban areas and economic expansion in Asia. In this particular context, the efficient utilization of space becomes a crucial factor in the design process for Asian skyscrapers as they seek to address the changing socioeconomic landscape. This study will provide valuable guidance, especially to architectural and structural designers in the pursuit of sustainable development for Asian skyscrapers by analyzing space efficiency.Design/methodology/approachThe methodology employed in this paper involved a case study approach to gather data on 75 Asian supertall towers in order to examine space efficiency.FindingsFindings of the research can be summarized as follows: (1) the average space efficiency of these towers was 67.5%, ranging from a minimum of 55% to a maximum of 82%; (2) the average proportion of the core area to the gross floor area (GFA) was 29.5%, with values ranging from 14% to 38%; (3) the majority of Asian skyscrapers exhibited a tapered form and adopted a central core typology, which catered to mixed-use and office purposes; (4) the most frequently utilized structural system was a combination of composite and outriggered frames; (5) space efficiency tended to decrease as the height of the tower increased; and (6) there was no noteworthy difference in the impact of various load-bearing systems and building forms on space efficiency.Originality/valueThere is a noticeable lack of extensive research into space efficiency in supertall towers in Asia, which serves as a hub for skyscrapers. This study seeks to fill this substantial gap in the current scientific literature.

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Freeform Supertall Buildings

Cited by 10 publications

References 18 publications

A study on interrelations of structural systems and main planning considerations in contemporary supertall buildings

A study on interrelations of structural systems and main planning considerations in contemporary supertall buildings

Review on Supertall Building Forms

An analysis of space efficiency in Asian supertall towers

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