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DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

METHODS OF EXPERIMENTAL DETERMINATION OF PARAMETERS OF DEFORMATION AND DESTRUCTION OF STATICALLY INDETERMINATE PRE-STRESSED REINFORCED CONCRETE BEAM SYSTEMS IN THE OUT-OF-LIMIT STATE

Vestnik MGSU 11/2012
  • Klyueva Nataliya Vitalevna - South-Western State University (YuZGU) Doctor of Technical Sciences, Professor, Chair, Department of Design, Construction of Buildings and Non-linear Structures, +8 (4712) 50-48-16, South-Western State University (YuZGU), 94, 50 let Oktyabrya st., Kursk, 305040, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Shuvalov Konstantin Aleksandrovich - State University - Educational, Scientific and Production Amalgamation (Gosuniversitet-UNPK) Assistant Lecturer, Department of Structural Units and Construction Materials, +8 (4862) 73-43-49, State University - Educational, Scientific and Production Amalgamation (Gosuniversitet-UNPK), 29 Naugorskoye Shosse, Orel, 302020, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 61 - 66

The authors present their methods of experimental determination of parameters of statically
indeterminate pre-stressed reinforced concrete bar systems in the out-of-limit state. The authors
also present their method of the out-of-limit state modeling and experimental determination of dynamic
strain and stress values typical for such systems in the event of the abrupt failure of one
system element.
Methods of experimental determination of parameters and dynamic loadings typical for deformations
caused by the abrupt failure of one of connecting elements drive special attention to
the analysis of deformations and cracking of pre-stressed structures on the basis of the research
of the nature of destructions and redistribution of dynamic forces within the above elements. The
following parameters have been identified in the course of tests: longitudinal strain of compressed
and cracked concrete elements; strain-stretched connecting pieces (calibrated covers); defl ections
of beams, including the application of loads beyond design parameters; load intensity and nature
of cracks and crack openings before and after the application of loads beyond design parameters;
overall patterns of destructions and prototypes of destructions caused by a sudden fracture of a
welded connecting element; increments of displacements and oscillations of pre-stressed elements
of beams after a sudden destruction of a connection under pressure.
Experimental parameters are needed to draw the curves of diagrams of experimental static
and dynamic deformations necessary for the survivability analysis.

DOI: 10.22227/1997-0935.2012.11.61 - 66

References
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