NOVÁK, J., et al. Stress Analysis of Hexagonal Element for Precast Concrete Pavements. In: Advanced Structural Engineering and Construction Systems 2018-. International Conference on Advanced Structural Engineering and Construction 2018, Osaka, 2018-09-13/2018-09-14. Waset.org: World Academy of Science, Engineering and Technology, 2018. p. 652-656. ISSN 1307-6892.
While the use of cast-in-place concrete for an airfield and highway pavement overlay is very common, the application of precast concrete elements is very limited today. The main reasons consist in high production costs and complex structural behavior. Despite that several precast concrete systems have been developed and tested with the aim to provide a system with rapid construction. The contribution deals with the reinforcement design of a hexagonal element developed for a proposed airfield pavement system. The sub-base course of the system is composed of compacted recycled concrete aggregates and fiber reinforced concrete with recycled aggregates place on top of it. The selected element belongs to a group of precast concrete elements which are being considered for the construction of a surface course. Both high costs of full-scale experiments and the need to investigate various elements force to simulate their behavior in a numerical analysis software using finite element method instead of performing expensive experiments. The simulation of the selected element was conducted on a nonlinear model in order to obtain such results which could fully compensate results from experiments. The main objective was to design reinforcement of the precast concrete element subject to quasi-static loading from airplanes with respect to geometrical imperfections, manufacturing imperfections, tensile stress in reinforcement, compressive stress in concrete and crack width. The obtained findings demonstrate that the position and the presence of imperfection in a pavement highly affect the stress distribution in the precast concrete element. To fulfill all the demands assumed the precast element should be heavily reinforced. Using under-reinforced concrete elements would lead to the formation of wide cracks and cracks permanently open.
eng
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
World Academy of Science, Engineering and Technology
dc.relation.ispartof
Advanced Structural Engineering and Construction Systems 2018-
dc.subject
Imperfection
eng
dc.subject
numerical simulation
eng
dc.subject
pavement
eng
dc.subject
precast concrete element
eng
dc.subject
reinforcement design
eng
dc.subject
stress analysis
eng
dc.title
Stress Analysis of Hexagonal Element for Precast Concrete Pavements
eng
dc.type
stať ve sborníku
cze
dc.type
conference paper
eng
dc.relation.projectid
info:eu-repo/grantAgreement/Technology Agency of the Czech Republic/TH/TH02010375/CZ/Airfield concrete panel/BLP
dc.rights.access
closedAccess
dc.type.status
Peer-reviewed
dc.type.version
publishedVersion
dc.relation.conference
International Conference on Advanced Structural Engineering and Construction 2018