What is the legacy of Structural Design Expertise? The Parametric Design Approach to High-Rise Buildings
(2022) IASS 2022 Symposium affiliated with APCS 2022 conference — Location: Beijing (19.September.2022)
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IASS_APCS2022-Proceedings_Zastavni-Sarkisian-Jasienski-Sgambi_Parametric_high-rise_design_LS-DZ-.pdf
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- Designing structures is a complex exercise with approaches that may considerably vary. The minimal requirement for the engineer is to create a structural design that meets the requirements of code. This approach presupposes that the structural behavior is well understood and that the engineer inherits sound design objectives. On the other hand, the most comprehensive design includes defining inherent structural characteristics and external loading, developing sound geometric placement of structural elements, designing in accordance the structural behavior considering the structural system definition, executing the full structural analysis, assessing the environmental performance of the structure, optimizing the structural system, detailing the structure and potentially defining aesthetics characteristics. Some structures from the past such as large bridges constructed during the industrial revolution demonstrated rare qualities of efficiency and aesthetic character. These bridges were designed based on the fundamentals of engineering, where mistakes or inefficiency was irrelevant in the structural design. Today, high-rise buildings have similar structural challenges and potential opportunities of expression. Some of these buildings are among the most complex in the field of structural engineering and required fully integrated designs approaches. Particularly with a height of 500m or more, designers face challenges in developing the most efficient solutions for these complex structures. For the student or junior engineer, a design exercise has been created considering full sets of sequential operations to complete the design. With the help of lectures and precedence studies shared in a class, students first assemble the elemental knowledge required along with parametric definitions for a building of a smaller scale 50m in height. Initial design approaches include powerful approaches such as graphic statics. Strategies for structural modeling are developed for the structural components of the project. An interactive FEM model enables students to quickly assimilate the order of magnitude of structural members sizes suited to this scale of structure. The students then consider the building at 500m height, adapting the design approach learned at the lower heights. Analyses and dimensioning are reviewed and the structural material and CO2 balance are assessed considering the efficiency of the design. Once completely assessed and designed, these trial structures are discussed in a large group to gauge the relevance of each strategies developed by the students enabling learning from that collective experience. The full process as described above considering ‘research by design’ will be described in this paper. Simultaneously, this technological approach will be shown to reveal a process that avoids most of the typical design obstacles encountered in design that is well beyond the minimum requirements of building codes.
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Zastavni, D., Sarkisian, M. P., Jasienski, J.-P., Sgambi, L., & et al. (2022). What is the legacy of Structural Design Expertise? The Parametric Design Approach to High-Rise Buildings. In Su-duo Xue, Jin-zhi Wu and Guo-jun Sun (ed.), Proceedings of the IASS 2022 Symposium affiliated with APCS 2022 conference : Innovation·Sustainability·Legacy (pp. 2993-3003). https://hdl.handle.net/2078.5/224637