MODE OF DEFINITION OF STRAIN-DEFORMED STATE OF CONSTRUCTIONS WITHOUT RELIEVING LOADINGS Russian patent published in 2007 - IPC G01B7/16 

FIELD: the proposed invention refers to the field of definition and control of strain-deformed state of constructions being under loading.

SUBSTANCE: the proposed mode of definition of strain-deformed state of constructions is in that resistive-strain sensors included in the strain measuring bridge of a deformation meter are installed in controlled points. At that the resistive-strain sensors are fastened on the construction being in a deformed strain state and measurements of surface deformations which are taken for end are carried out, then material cutoffs are fulfilled around the resistive-strain sensors to the depth corresponding to relieving of the strain state on the construction in the point of measuring deformations and the surface deformations of the construction which are taken for initial are measured, on the basis of prescribed the initial and the end surface deformations the surface deformations of the construction under loading are defined, then on a sample of the construction which is in a limp state the initial deformations of the sample of the construction are measured, after that material cutoffs are made in the sample of the construction around the measuring resistive-strain sensors to the same depth as in the material of the investigated construction, the end deformations of the sample of the construction are measured, on the basis of the measured values of the initial and the end deformations of the sample of the construction the residual temperature deformations of the rigid construction are defined and true relative deformations of the construction are calculated by way of subtracting the residual temperature deformations of the rigid construction out of the surface residual deformations of the construction under loading.

EFFECT: simplifies the technological process of definition of strain-deformed state of the construction without relieving of loadings and increases accuracy and reliability of measurements.

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