New Methods in Efficient Post-Tensioned Slab Design Using Topology Optimization

Sarkisian, Mark; Long, Eric; Beghini, Alessandro; Garai, Rupa; Shook, D.; Diaz, Abel; Henoch, Ricardo

doi:10.1061/9780784480410.019

Cited by 2 publications

(1 citation statement)

References 9 publications

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“… Materials saving : They can resist the same load as conventional concrete with a lower amount of concrete and reinforcements (Corven Engineering Inc, 2002). In other words, owing to reduced thickness, materials can be saved (Mohammed et al , 2017; Sakisian et al , 2017; Davey et al , 2015). The strength of a PT/PS strand is approximately four times the strength of a conventional reinforcement (Taranath, 2010).…”

Section: Literature Findingsmentioning

confidence: 99%

Post-tensioned concreting: its suitability for and acceptability in Sri Lanka

Madhubhashana

Perera

2019

JEDT

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Purpose Many countries have started to use post-tensioned (PT) concrete because of its sustainability and low cost. However, it is not quite popular in Sri Lanka as the required knowhow and technology are not available within the country. By introducing PT concrete to the country, unwanted costs and time overruns could be eliminated from the construction projects. This paper, therefore, aims to identify the suitability and acceptability of PT concreting for/in Sri Lanka. Design/methodology/approach An extensive literature review was first carried out to gather knowledge on PT concreting. The four case studies that followed it included eight semi-structured interviews and a document review. Ten expert interviews were conducted finally to strengthen the findings of the literature review and case studies. Cross-case analysis and NVivo 11 content analysis software were used to analyze the data gathered. Findings Findings reveal that PT concreting saves cost and time of construction and that it can have a control over the resources required for construction, which makes it environment-friendly. PT concreting allows thinner concrete sections, extended spans, stiffer walls that resist lateral loads and stiffer foundations that resist the effects of shrinking and swelling soils. Originality/value It is found that PT concreting is more suitable for the construction industry in Sri Lanka than traditional concreting.

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Section: Literature Findingsmentioning

confidence: 99%

Post-tensioned concreting: its suitability for and acceptability in Sri Lanka

Madhubhashana

Perera

2019

JEDT

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An automated optimized design of practical post-tensioned slabs

Farid,

Kamal,

Rashed

2024

J. Eng. Appl. Sci.

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In this paper, an efficient methodology that could be implemented within any analysis software is developed to automate the design process of post-tensioned slabs. Optimization techniques are used to compute the necessary number of strands. The present methodology is based on computing an innovative influence matrix that contains the effect of each strand on stresses at a set of control points (points of peak stresses). This matrix will be used in the optimization avoiding reanalysis in each optimization iteration. The sum of the squares of the difference between the allowable stress and the computed stresses at all control points is considered an objective function. The optimization is then carried out under the constraints that the stresses at each control point should not exceed the allowable limit and to ensure that the number of strands is an integer value. Alternatively, the proposed methodology could be used as a value-engineering tool. Practical examples are presented to demonstrate the efficiency of the developed methodology.

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New Methods in Efficient Post-Tensioned Slab Design Using Topology Optimization

Cited by 2 publications

References 9 publications

Post-tensioned concreting: its suitability for and acceptability in Sri Lanka

Post-tensioned concreting: its suitability for and acceptability in Sri Lanka

An automated optimized design of practical post-tensioned slabs

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