METHOD FOR DIAGNOSTICS OF TECHNICAL CONDITION OF STEEL REINFORCED CONCRETE SPANS Russian patent published in 2011 - IPC G01M5/00 

FIELD: construction.

SUBSTANCE: method includes exposure of spans (S) to dynamic load with wide spectrum of frequencies, measurement of parametres of mechanical vibration at the same time with the help of accelerometres, production of parametre of diagnostic criterion and detection of damage availability by variation of this parametre. At the same time initially parametre is fixed with the help of strain sensors installed in one section on upper belt of metal beam in the middle of span of diagnosed S, and this parametre characterises stressed-deformed condition of S loading, for instance, with passing-by train, and directly after removal of load from diagnosed S, dynamic parametre is registered with the help of accelerometres installed on lower belt of metal beam in the middle of diagnosed S. Technical condition of S is assessed by deviation of both mentioned parametres from reference calculated values for good condition of S.

EFFECT: reduced labour intensiveness of technical condition diagnostics and improved validity of produced results.

4 dwg