Post-Tensioned Concrete Long-Span Slabs in Projects of Modern Building Construction

Szydłowski, Rafał; Łabuzek, Barbara

doi:10.1088/1757-899x/245/2/022065

Cited by 13 publications

(5 citation statements)

References 1 publication

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“…Flat post-tensioned ceilings are currently used more and more often in construction. In Poland, it is also possible to find several ceilings of such kind, the Artistic and Cultural Center in Kozienice, Busko-Zdrój Cultural Center [1,2]. The use of this type of construction allows for more efficient use of usable space, flat slabs are thin and can be used for large spans.…”

Section: Introductionmentioning

confidence: 99%

Lightweight Aggregate Concrete as an Alternative for Dense Concrete in Post-Tensioned Concrete Slab

Mieszczak

Domagała

2018

MSF

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The paper presents the results of tests conducted on two lightweight aggregate concretes made of new national Certyd artificial aggregate. This research is intended to first application of lightweight concrete to construct large-span post-tensioned slab. In addition to mechanical properties development, shrinkage and creep during 3 months of loading were tested. The obtained results are compared with theoretical results predicted by standard. Conducted tests indicated, that measured values of shrinkage and creep are significantly lower than predicted ones. This is promise for application of tested concrete in construction of post-tensioned slabs.

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Section: Introductionmentioning

confidence: 99%

Lightweight Aggregate Concrete as an Alternative for Dense Concrete in Post-Tensioned Concrete Slab

Mieszczak

Domagała

2018

MSF

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“…In the building, that was put into use in 2015, the possibilities of constructing large-span thin slabs were desired [3]. This was dictated by the limited construction height of the building, which has been designed with 3 post-tensioned slabs (Fig.…”

Section: Post-tensioned Slabs In the Cultural And Artistic Center Bui...mentioning

confidence: 99%

Concrete Properties for Long-Span Post-Tensioned Slabs

Szydłowski

2018

MSF

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In contrast to foreign practice, in Poland, for many years, there has been a belief, that in prestressed constructions, more expensive concretes on basalt aggregates should be applied. This habit is due to the low quality of national river and fossil aggregates. They allow to obtain low concrete strength and modulus of elasticity. In the paper, basing on two examples of post-tensioned slabs, it has been shown, that it is possible to use concretes with a low value of modulus of elasticity for large-span slabs. These results may be significant in popularizing the use of post-tensioned slabs in buildings in poorer countries, making them cheaper in execution.

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“…Vibration serviceability has become a vital requirement in the design and construction of long span floor systems featuring slender structural sections and open-plan layout [1][2][3]. Building floors with fundamental frequency below a threshold of approximately 10 Hz are usually considered as low-frequency floors which might exhibit a resonant build-up response due to various human activities such as walking, running and dancing [4,5].…”

Section: Introductionmentioning

confidence: 99%

Development of Dynamic Load Factors for Human Walking Excitation for Floor Vibration Design

Nguyen

Lythgo

Gad

et al. 2022

International Journal of Applied Mechanics and Engineering

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This paper discusses the derivation of a set of dynamic load factors for calculation of walking response on the basis of measurements made during a biomechanics research carried out with young adults. Firstly, a quite large number of experimental data on single footstep force were collected. The single footstep forces were then superimposed to generate the force time history for a continuous walk. This was followed by the transformation of the resultant force to the frequency domain from which the dynamic load factors for the first ten harmonics of a pacing rate can be extracted. A statistical analysis was employed on the dynamic load factors to acquire their design values in terms of the 90-th or 95-th percentile. The waking force function recommended by various design guides and that developed in the paper were then used in a comprehensive finite element model to predict the vibration level of a building floor. Current design guides on floor vibration normally suggest using four harmonics in the walking force whereas load factors for ten harmonics were developed in this paper. The acceleration response of the floor was found to increase by 5-33% when walking harmonics beyond the fourth harmonic were considered. The inclusion of higher harmonics would therefore lead to a more conservative estimation of the floor response.

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Post-Tensioned Concrete Long-Span Slabs in Projects of Modern Building Construction

Cited by 13 publications

References 1 publication

Lightweight Aggregate Concrete as an Alternative for Dense Concrete in Post-Tensioned Concrete Slab

Lightweight Aggregate Concrete as an Alternative for Dense Concrete in Post-Tensioned Concrete Slab

Concrete Properties for Long-Span Post-Tensioned Slabs

Development of Dynamic Load Factors for Human Walking Excitation for Floor Vibration Design

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