Considering nonlinear properties of concrete in the design of reinforced concrete structures for torsion
Authors:
- N. Jurkowska
Abstract
Restoration and maintenance of cultural heritage concrete and reinforced objects always require accounting for the torsional stress in the elements, as well as the tensile, compressive and shearing stress. It should be considered, that torsion always develops in the elements of spatial structures, including cross-ribbed systems, bridges and overlaps, elements of shells and domes, stairs, etc. This paper briefly systematizes substantive results of the last studies of an urgent problem of torsional stiffness of reinforced concrete elements, including theoretical investigations, experimental studies and numerical research. Stress redistribution in the statically indeterminate reinforced concrete structures' elements depends on both torsional and bending stiffness. However, while bending stiffness is considered in the design practice, the torsional stiffness is not aknowledged by engineers, nor used in building standards and software packages. This paper aims to substantiate the necessity of considering the torsional stiffness of reinforced concrete elements in design practice. This article is the result of numerous investigations conducted in the scientific school of professor Taliat Azizov. They certify that reduction of the torsional stiffness must be considered along with the bending stiffness in different stages of behaviour of concrete structures. Moreover, the research conducted for this paper proved that a change in the shear modulus of concrete also affects the deflected mode of structures and should be accounted for as the component of torsional stiffness. In order to provide engineers with specialized design techniques, they have been developed for the calculation of torsional stiffness of reinforced concrete elements with normal cracks of rectangular, triangular, t-sections, box-sections, and other cross-sections. The engineering bilinear shear stress-strain curve for concrete has also been proposed on the basis of experimental studies.
- Record ID
- CUT67b3da5fd6a3419ab6a7553dd3394be3
- Publication categories
- ; ;
- Author
- Journal series
- IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, e-ISSN 1757-899X, Irregular
- Issue year
- 2018
- Vol
- 364
- Pages
- [1-8]
- Article number
- 012030
- Other elements of collation
- wykr.; Bibliografia (na s.) - 7-8; Bibliografia (liczba pozycji) - 29; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 364
- Substantive notes
- Tyt. vol.: Florence Heri-Tech - The Future of Heritage Science and Technologies 16-18 May 2018, Florence, Italy
- Conference
- Florence Heri-Tech – The Future of Heritage Science and Technologies, 2018, 16-05-2018 - 18-05-2018, Florence, Włochy
- Keywords in English
- reinforced concrete, torsion, shear modulus of concrete
- DOI
- DOI:10.1088/1757-899X/364/1/012030 Opening in a new tab
- URL
- http://iopscience.iop.org/article/10.1088/1757-899X/364/1/012030 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 15
- Publication indicators
- = 5
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT67b3da5fd6a3419ab6a7553dd3394be3/
- URN
urn:pkr-prod:CUT67b3da5fd6a3419ab6a7553dd3394be3
* 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.