Abstract
An analytical condition for crack resistance of a specific plane stress reinforced concrete element with prestressed reinforcement is considered in this article. The specific concrete element is reinforced with orthogonally located prestressed rods that coincide with the directions of the coordinate axes. The crack resistance condition is constructed by generalizing of G.A. Geniev theory of plasticity of concrete and reinforced concrete on the region of existence of tensile stresses: “tension-tension” and “compression-tension”. A graphical interpretation of this condition is presented for a plane stressed element depending on the angle between the main force and the coordinate axes. As an example, the crack resistance condition of the support zone of a prestressed concrete beam of a monolithic reinforced concrete frame is considered.
Highlights
Whereas it is necessary to protection of buildings and structures from progressive collapse, which is provided for by the requirements of regulatory documents of various countries, including Russia, research is being conducted and various proposals are being developed to solve this problem
In relation to the RC frames of multi-storey buildings, various protection methods are recommended, which include increasing the cross-sections of the load-bearing elements of the building frame [1, 2], intensity and reinforcement schemes [3, 4], setting up additional elements in the form of a links system [5, 6], the exclusion of one-way bonds in compounds of elements [7], etc
There is a need to solve a number of theoretical problems, one of which is the task of determining the crack resistance condition of a plane stressed RC element with prestressed reinforcement
Summary
EasyChair preprints are intended for rapid dissemination of research results and are integrated with the rest of EasyChair. Crack resistance criterion of plane stress RC elements with prestressed reinforcement. V I Kolchunov 1, T A Iliushchenko Department of Unique Buildings and Structures,South West State University, street 50 let Oktyabrya, 94, Kursk, 305040, Russia
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