FIELD: construction; test equipment.
SUBSTANCE: invention relates to the field of testing and can be used for testing structures with an excessive impact. Tested structure is subjected to an excessive impact. Force-measuring device determines the value of the maximum dynamic load at the time of destruction of the construction structure under impact, as well as instantaneous values of a short-term dynamic load in a fixed time interval from the beginning to the end of the impact. Simultaneously, in the same time interval, the instantaneous values of the reference reactions are determined by means of the reference reaction sensors, mounted symmetrically on both sides of the test sample. Obtained data is processed by means of a measuring and computing complex. Dependency curves of the relative short-term dynamic load are plotted by the relative total reference reaction, as well as the coefficients of the resulting force from the impact time. Relative short-term dynamic load and the relative total reference reaction are determined by the ratio of the values of their instantaneous values to the value of the maximum dynamic load. Coefficients values of the resulting force are calculated from the formulas, the initial values for which are the instantaneous values of the transient dynamic load, instantaneous values of the reference reactions and the value of the maximum dynamic load.
EFFECT: technical result consists in increasing the accuracy and reliability of the measurement of loads and the state of the building structure and evaluating its reactions to the above-standard dynamic impact.
1 cl, 5 dwg
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Authors
Dates
2018-02-15—Published
2017-01-10—Filed