Research on the Application of Temporary Locking and Non-Weighing Counterweight Construction Technology for Transformer Bridges
In order to solve the problems of unbalanced weighing before bridge turning to remove the sand box may damage the slipway and the weighing process is time-consuming and laborious,this paper puts forward the temporary locking and no-weighing counterweight construction technology,deduces the counterweight moment and other calculation formulas and gives the construction program,in the two turning bridges of the four turning T-structures,the counterweight moment of the rotating bridge was calculated by measuring the strain changes before and after the temporary locking sections were cut,and the conventional unbalanced weighing technique was also used in the T-frames of the bridges,and the unbalanced moment was calculated for comparative validation.The results show that the counterweight moments calculated by the temporary locking and weightless weighing techniques are accurate,and can correctly reflect the eccentricity of the bridge structure,and can control the eccentricity of the rotating bridge system in the range of 10 cm after counterweighting.It shows that the temporary locking and weightless weighing technology can quickly and accurately complete the weighing and counterweighting work,and has certain reliability and feasibility.
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