• ISSN 0258-2724
  • CN 51-1277/U
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Volume 27 Issue 5
Oct.  2014
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Journal of Southwest Jiaotong University  > 2014  >  27(5): 754-759.
ZHAO Lei, JIA Shaomin, YANG Xingwang. Determination of Fabrication Dimensions of Steel Box Girders in Cantilever Construction[J]. Journal of Southwest Jiaotong University, 2014, 27(5): 754-759. doi: 10.3969/j.issn.0258-2724.2014.05.002
Citation: ZHAO Lei, JIA Shaomin, YANG Xingwang. Determination of Fabrication Dimensions of Steel Box Girders in Cantilever Construction[J]. Journal of Southwest Jiaotong University, 2014, 27(5): 754-759. doi: 10.3969/j.issn.0258-2724.2014.05.002
shu

Determination of Fabrication Dimensions of Steel Box Girders in Cantilever Construction

doi: 10.3969/j.issn.0258-2724.2014.05.002
  • Received Date: 28 Sep 2013
  • Publish Date: 25 Oct 2014
    Abstract
  • In order to effectively determine the fabrication dimensions of steel box girders to ensure the smooth erection of main beam and make the profile upon completion state meet design requirements, a new method to calculate fabrication dimensions was established by using the calculation results of construction phase. This method is based on the geometry control method, and commences from the unstressed relationship between a new lifting beam segment and its adjacent installed beam segment in cantilever construction. In addition, the fabrication dimensions of steel box girders of the main channel bridge of Jiashao bridge, as the research subject, were determined. The construction practice shown that the main channel bridge construction of Jiashao bridge was going well. The measured data indicated that the profile of the main beam of the bridge upon completion state was smooth, and the maximum elevation error was far less than the prescribed limit values to verify the correctness of the established method.

     

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