TY  - JOUR
T1  - Deformations and Tension in Concrete of Squeezed Zone of Non-Centrally Loaded Ferroconcrete Elements
AU - Popkov, Juri Viktorovich AU - Smolyago, Gennadi Alekseyevich AU - Glagolev, Evgeni Sergeevich AU - Frolov, Nikolay Victorovich AU - Obernikhin, Dmitry Vyacheslavovich 
JO  - Research Journal of Applied Sciences
VL  - 9
IS  - 12
SP  - 1021
EP  - 1029
PY  - 2014
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2014.1021.1029
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2014.1021.1029
KW  - Deformation
KW  -holographic interferometry
KW  -hypothesis of flat sections
KW  -the diagram tension
KW  -concrete of the squeezed zone
KW  -tension characteristics
KW  -flexible racks
KW  -high-strength
AB  - Results of the experimental studying of deformations with the first application of a method of a
holographic interferometry in research of the samples or models of the squeezed ferroconcrete designs are
presented. Prototypes, means of their loading and method of registration of holograms are described. A set of
the interferometer and the scheme of realization of a method of two expositions in the record of interferograms
at a step loading of the studied objects is shown in details. The way of interpretation and results of the analysis
of regularities of the interferential strips arrangement is specified. On the basis of data of the experiment it is
established that in the method of holographic interferometry by means of only qualitative analysis of a picture
of interferential strips it is possible to receive a full picture of distribution of deformations of ferroconcrete
element side. The received dependences of deformation of cross sections confirm justice of application of a
hypothesis of flat sections in settlement models. Using results of experiments of different researchers, the
analysis of characteristics of concrete tension of a squeezed zone of ferroconcrete designs which are reinforced
by steel of the S800 class and more on the basis of which it is offered to apply the transformed diagram “tension
deformation” to the concrete in the general deformation method of calculation. The diagram considers
influences of a gradient of deformations’ distribution and high-strength fittings.
ER  -