Design Optimization of Structural–Acoustic Spanning Concrete Elements in Buildings

Broyles, Jonathan M.; Shepherd, Micah R.; Brown, Nathan C.

doi:10.1061/(asce)ae.1943-5568.0000520

Cited by 11 publications

(7 citation statements)

References 25 publications

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“…The shapes (shown in Figure 1) were selected to assess the dynamic performance of specimens with known differences in mass density (corresponding to material savings) and simulated air-borne sound insulation calculated for the full-scale specimens. Additional information regarding the air-borne sound insulation methodology can be found in Broyles et al 34 The Sound Transmission Class (STC) ratings were found to be STC-51, STC-55, STC-60, and an STC-50 for slabs 1–4, respectively. It should be noted that the STC rating only describes the air-borne sound transmission directly through the building element and ignores flanking sound transmission.…”

Section: Floor Selection Geometry and Designmentioning

confidence: 99%

Section: Floor Selection Geometry and Designmentioning

confidence: 99%

“…The concrete floor models presented in this work are designed to resist the same structural load, corresponding to typical ASCE 7-10 35 floor requirements scaled to the experiment. Further details of the structural design and performance can be found in Broyles et al 34,36 Although a flat slab specimen was not fabricated nor experimentally tested in this study, the flat slab that would be designed according to the structural conditions specified would have a uniform thickness of 230 mm (9 in). A quarter-scale specimen would thus have a uniform thickness of 57.5 mm (2.25 in), with a total mass of 163 kg (360 lb).…”

Section: Specimen Geometry and Designmentioning

confidence: 99%

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Evaluation of the dynamic response for scaled models of shaped concrete floor slabs

2023

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The dynamic response of building structures is an essential design consideration in building acoustics. However, building design is increasingly driven by sustainability goals. Floors can be optimized to reduce material consumption and corresponding carbon emissions, yet geometric changes may cause sound insulation and vibration problems. Although the dynamic performance of traditional floors is well established, the performance of non-traditional shapes is less understood. Before trusting the results of building simulations encompassing optimized floors, the dynamic results should first be validated experimentally. This paper details a numerical finite element analysis method to ascertain the dynamic response of four shaped concrete slabs, with experimental modal analysis used to validate the numerical results. The material properties in the numerical model are updated to match the experimental results. The findings support a computational framework for determining the dynamic response of shaped structures that can then be implemented in future large-scale building models.

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Section: Floor Selection Geometry and Designmentioning

confidence: 99%

Section: Floor Selection Geometry and Designmentioning

confidence: 99%

Section: Specimen Geometry and Designmentioning

confidence: 99%

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Evaluation of the dynamic response for scaled models of shaped concrete floor slabs

2023

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“…With the acceleration of urbanization and the rapid growth of population, high-rise residential buildings have become one of the important choices to solve the urban housing demand. However, the spatial layout and design of high-rise buildings is not an easy task, because it needs to consider many factors, including but not limited to the efficiency of space utilization, the comfort of occupants, the sustainability of buildings, and the particularity of urban environment [1]. In this complex background, it is difficult to meet the needs of many aspects with traditional design methods.…”

Section: Introductionmentioning

confidence: 99%

Research on Space Optimization Design of High-rise Residential Building Based on Genetic Algorithm

Huang,

Zhang

2024

Applied Mathematics and Nonlinear Sciences

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With the rapid development of urbanization and the continuous growth of population, the design and planning of high-rise residential buildings have become increasingly important. The purpose of this study is to explore the space optimization design method of high-rise residential buildings based on genetic algorithm(GA), focusing on the comparative analysis between traditional GA and Adaptive genetic algorithm(AGA). In this paper, AGA is used to establish the spatial optimization model of high-rise residential buildings. By dynamically adjusting the parameters of the algorithm, AGA makes the algorithm better adapt to the characteristics of the problem and improves the search efficiency. The results show that AGA is superior to traditional GA in global convergence probability, especially when the population size is large. AGA improves the adaptability and robustness of the algorithm by dynamically adjusting the crossover and mutation probability. AGA has better flexibility and adaptability in the design of high-rise residential buildings and is expected to provide more optimized solutions for solving complex design problems. The findings of this study provide a useful reference for innovation and sustainable development in the field of high-rise building design and also provide practical methods and tools for the application of GA.

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“…On the other hand, shells rely mainly on membrane action, thanks to their curvature, with their supports providing horizontal reaction through external thrust or internal ties. While the architectural qualities of vaulted floors have been explored and demonstrated over time (Bannister, 1968;Block et al, 2010;Guastavino, 1892), the use of thin shells for building floors raises engineering questions related to structural performance, but also to acoustics (Broyles et al, 2022) and current fire safety regulations -even though one of the main drivers for the early adoption of vaulted flooring in the 19 th century was its fireproof quality (Ochsendorf and Freeman, 2014). Perhaps more significantly, there are construction challenges to be considered, related to how these structures can be efficiently fabricated and assembled, justifying the integration of these challenges in design exploration.…”

Section: Introductionmentioning

confidence: 99%

Computational design exploration of a segmented concrete shell building floor system

Costa

Oval

Shepherd

et al. 2023

Proceedings of the Institution of Civil Engineers - Structures

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The construction industry is responsible for nearly half of the UK's carbon emissions, and the use of an extremely large volume of concrete, the world's most widely used man-made material, accounts for more than 7% of global CO2 emissions. The scale of this problem spawned research that explored the potential for structurally efficient non-prismatic geometries to substantially reduce the amount of concrete in building elements, thus also reducing their embodied carbon footprint. In particular, the research focused on segmented thin concrete shells as floor slabs, leveraging computational design and digital fabrication methodologies to automate their production off-site. An important part of this research was the development of a computational framework for the design of thin concrete shells, to make such construction methodology accessible to building designers in practice. The framework combined solutions for parametric modelling, finite element analysis, isogeometric analysis, form finding and optimisation, and also embedded fabrication constraints specific to the project's automated manufacturing system. This paper documents the application of the developed computational framework in the design of a 4.5m x 4.5m prototype, illustrating how automating concrete construction can transform the industry towards net-zero.

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Design Optimization of Structural–Acoustic Spanning Concrete Elements in Buildings

Cited by 11 publications

References 25 publications

Evaluation of the dynamic response for scaled models of shaped concrete floor slabs

Evaluation of the dynamic response for scaled models of shaped concrete floor slabs

Research on Space Optimization Design of High-rise Residential Building Based on Genetic Algorithm

Computational design exploration of a segmented concrete shell building floor system

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