Prestressed hollow core slabs for topped slim floors – theory and research of the shear capacity
Authors:
- Wit Derkowski,
- Mateusz Surma
Abstract
This research paper discusses the influence of the flexibility of girders in Slim Floor structures on the reduced load capacity of prestressed HC slabs. The current state of knowledge in the field of the transverse behaviour of hollow core slabs is presented. Contradictory information provided in the literature as well as the computational comparative analysis of the existing theoretical models has demonstrated the need for better recognition of the issue of the effect of reinforced concrete topping layer on the load capacity of HC slabs. The paper includes the presentation of experimental tests, the purpose of which was to reproduce the actual work conditions of hollow core slabs depending on their location on the floor and the numerical analyses supplemented these studies. As a result of the conducted tests and analyses, it was found that the increased flexibility of the support beam resulted in an adverse change in the stress state of the hollow core slab, which may lead to the exceedance of the limit state of shear capacity, while laying an additional layer of structural topping on precast hollow core slabs significantly increased the shear capacity of the floor, and thus the safety of the structure. The research also indicates that in all the tested topped elements full composite action up to the failure was shown.
- Record ID
- CUT93a7b03e886145499185a66a0723ef69
- Publication categories
- ;
- Author
- Journal series
- Engineering Structures, ISSN 0141-0296, e-ISSN 1873-7323
- Issue year
- 2021
- Vol
- 241
- Pages
- [1-17]
- Article number
- 112464
- Other elements of collation
- fot.; rys.; schem.; tab.; wykr.; Bibliografia (na s.) - 16-17; Bibliografia (liczba pozycji) - 46; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 241
- Keywords in English
- concrete topping, finite element modelling, flexible support beam, full-scale test, precast hollow core slab, slim floor, shear capacity
- DOI
- DOI:10.1016/j.engstruct.2021.112464 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/abs/pii/S0141029621006143 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 140
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT93a7b03e886145499185a66a0723ef69/
- URN
urn:pkr-prod:CUT93a7b03e886145499185a66a0723ef69
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.