Investigation of optimization techniques on structural-acoustical shaped concrete slabs in buildings

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

doi:10.1121/2.0001354

Cited by 3 publications

(3 citation statements)

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“…Characteristics of this type of slab include its high productivity compared to the constructive processes. Regarding acoustics, this type of slab can be described as advantageous, as presented in the study [15]. This manuscript investigates the relationship between the structural form of the slab and acoustics, and proves a good acoustic insulation of this type of structural solution.…”

Section: Slab Selection Is Based On Their Type and Functionalitymentioning

confidence: 88%

Exploring Analytical Hierarchy Process for Multicriteria Assessment of Reinforced Concrete Slabs

Salomão,

Pinheiro

2023

Applied Sciences

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The decision regarding which slab type should be used in a building is generally made by the structural engineer, considering structural efficiency and compatibility with the architectural design, as well as the costs related to the amount of material used in each option. Because of the technical responsibilities inherent to this specialty, the decision-making process neglects to encompass various other factors of consequence that influence the construction process. These considerations include productivity, the visual and aesthetic characteristics of the slab, waste generation, and thermal and acoustic comfort. This paper aims to develop a multicriteria method to assist stakeholders in selecting the most suitable structural system for slabs based on project needs and objectives. The study utilized the Analytic Hierarchy Process (AHP) and information from bibliographic research, expert opinion using the Delphi Method, and machine learning on a dataset of over 2000 previously constructed slabs to achieve this goal. The analysis showed that the conventional solid slab type was the top priority, followed by the two-way waffle slab, one-way waffle slab, solid flat slab, and waffle slab. Additionally, the proposed AHP method was effective in developing a decision-making model for companies and the construction sector.

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Section: Slab Selection Is Based On Their Type and Functionalitymentioning

confidence: 88%

Exploring Analytical Hierarchy Process for Multicriteria Assessment of Reinforced Concrete Slabs

Salomão,

Pinheiro

2023

Applied Sciences

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“…A related subject to sound insulation is the coincidence frequency of a structure. Previous work by Broyles et al 52 found that the shape of concrete specimens can influence the frequency that the coincidence dip occurs in simulated transmission loss. Further, optimization techniques can improve air-borne performance of slabs by shaping the rib to have a coincidence frequency below the 125 Hz one-third-octave band.…”

Section: Implications In Building Acousticsmentioning

confidence: 97%

“…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%

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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A Many-Objective Joint Parallel Simulation Method for Acoustic Optimization Design of Sound-Absorbing Structures

2022

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This paper establishes a many-objective MATLAB with a COMSOL joint parallel simulation optimization method in order to solve the current situation of low efficiency, single objective, and poor effect in acoustic optimization design research for a sound-absorbing structure. Our proposed method combines the means for population partitioning, monitoring, and adaptive normalization, within the framework of the NSGA-III algorithm, which takes the hyperplane deployment scheme into account in its entirety. Compared to the traditional genetic algorithm toolbox of the joint COMSOL optimization scheme, it is shown that the joint parallel simulation optimization method that is constructed in this paper achieves a higher optimization efficiency and a better experimental performance, thereby aiding in the identification of the optimal solution to multiple objectives. The optimization efficiency can increase linearly as the number of available cores on the computer increases. This method is then used to construct a parallel, low-frequency, broadband, highly-sound-absorbing structure. Without any constraints on the optimization objective, the diversity of the optimization results is evident within the parameter optimization range of this paper. The optimization results are stable and substantial, with constrained optimization objectives that have some reference value. In addition, the proposed method can solve acoustic vibration optimization problems and can be applied to other finite element optimization problems.

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Investigation of optimization techniques on structural-acoustical shaped concrete slabs in buildings

Cited by 3 publications

References 0 publications

Exploring Analytical Hierarchy Process for Multicriteria Assessment of Reinforced Concrete Slabs

Exploring Analytical Hierarchy Process for Multicriteria Assessment of Reinforced Concrete Slabs

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

A Many-Objective Joint Parallel Simulation Method for Acoustic Optimization Design of Sound-Absorbing Structures

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