Tension test method for stay cable steel strand of partially cable-stayed bridge
A cable-stayed bridge cable steel and testing method technology, applied in the direction of tension measurement, etc., can solve the problems of short cable, low tension accuracy of cable steel strands, and difficult to accurately identify the bending stiffness of cable steel strands, etc. To achieve the effect of convenient testing process
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[0015] The test method provided by the present invention uses a section of the steel strand in a part of the cable-stayed bridge cable steel strand as the test section of the steel strand to test the fundamental frequency and bending rigidity of the section of the steel strand. Fundamental frequency, bending stiffness, length, quality parameters, according to the calculation theory of free vibration of cable considering the influence of bending stiffness, calculate the tension of some cable-stayed bridge cables; the test process of the fundamental frequency includes the following steps:
[0016] (1) Select any length of the steel strand in the cable-stayed bridge cable as the test section steel strand, and fix the two ends of the test section steel strand by connecting rigid bodies between the two ends;
[0017] (2) Use an acceleration sensor and a matching acquisition instrument to measure the fundamental frequency of the steel strand in the test section.
[0018] The bending stiffn...
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