METHOD FOR NONDESTRUCTIVE INSPECTION OF CARRYING CAPACITY OF SINGLE-FLIGHT REINFORCED CONCRETE BEAMS Russian patent published in 2016 - IPC G01N3/32 

FIELD: construction.

SUBSTANCE: invention relates to nondestructive control of bearing capacity of single-flight reinforced-concrete girders at criteria strength reinforcement and concrete. On inspected areas with highest beam concrete deformations of operating load and in these places set meters deformations. Reinforced concrete girder is then loaded with test load. Method includes determining value of relative deformation separately for concrete and reinforced concrete reinforcement beams. For each stage of test load average value of relative deformation separately for concrete and reinforced concrete reinforcement beams. For each stage of test load separately for concrete and reinforced concrete steel reinforcement beam calculating mean-square deviation of relative deformation. Using prior information, determining average value of maximum relative deformation separately for concrete and reinforced concrete reinforcement beams. Determining upper limiting load value and lower limit value load for concrete and reinforced concrete reinforcement beams. Maximum carrying capacity of concrete beam is determined by least pair obtained for concrete and reinforced concrete girder fitting values of limit loads and . Values of maximum bearing capacity of reinforced concrete girder theoretically calculated value of maximum bending moments and , which can be reinforced concrete girder. Finding theoretical dependence of bending moment M_q of load acting on reinforced concrete girder. From equations of moments of and are upper limit value of load on reinforced concrete girder and lower limit value of load on reinforced concrete girder .

EFFECT: higher safety of tests of reinforced concrete structures and high accuracy of determining bearing capacity of reinforced concrete structures.

1 cl, 4 dwg