To test the effective tension of high-strength steel wire of PC bridge, experiments were carried out on a WED electronic universal testing machine using a tensioned tension tester (LCZL-50) that is developed independently. First, the high-strength steel wire was stretched to different tension values using a testing machine, then the effective tension of it was tested by transverse tensioning method, and the experimental data were analyzed based on the least squares method. The above method was used in practical bridge test and calculation. The results of comparative analysis of the theoretical value and measured value of PC bridge show that when the ø5mm high-strength steel wire was under relatively small transverse tension, the variation of transverse tension and transverse displacement had a linear relationship, and conditions of small deformation were satisfied. The error between the measured value and theoretical value was smaller than 5%, indicating the test precision of this method meets the demands for practical engineering, and may provide technical basis for the maintenance, strengthening or modification of PC bridges.
HOU Wei
,
HE Chuanhai
,
HAN Zhiqiang
,
LUAN Juan
. Test of Effective Tension of High-strength Wire in PC Bridge Based on Transverse Tensioning Method[J]. Science & Technology Review, 2014
, 32(8)
: 49
-52
.
DOI: 10.3981/j.issn.1000-7857.2014.08.007
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