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Volume 31 Issue 1
Jan.  2018
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Article Contents
Journal of Southwest Jiaotong University  > 2018  >  53(1): 56-63.
HUANG Zuwei, LEI Junqing, TANG Jishun. Application Study on Grillage Method for Multiple-Cells Box Girder with Transverse Slope[J]. Journal of Southwest Jiaotong University, 2018, 53(1): 56-63. doi: 10.3969/j.issn.0258-2724.2018.01.007
Citation: HUANG Zuwei, LEI Junqing, TANG Jishun. Application Study on Grillage Method for Multiple-Cells Box Girder with Transverse Slope[J]. Journal of Southwest Jiaotong University, 2018, 53(1): 56-63. doi: 10.3969/j.issn.0258-2724.2018.01.007
shu

Application Study on Grillage Method for Multiple-Cells Box Girder with Transverse Slope

doi: 10.3969/j.issn.0258-2724.2018.01.007
  • Received Date: 07 Dec 2015
  • Publish Date: 25 Feb 2018
    Abstract
  • Mechanical properties of multiple-cells box girder with the transverse slope were analyzed in order to study the factors when using the grillage method. Based on the grillage method, formulas for multiple-cells box girder with tte transverse slope were derived while rationality of considering the transverse slope was discussed. Parameter analysis was done by adopting numerical simulation. Contrastive analysis on mechanical characteristic were done by changing the parameters such as loading positions, width-span ratios of box girder, cross slope angles. The results show that the error in computing characteristic value of grillage section rigidity is decreased up to 12.12% when the transverse slope is considered. The calculated results of grillage model fit the results of solid model, however, distortion cannot be reflect in the grillage model of multiple-cells box girder. The improvement of calculation precision is mainly appear on lateral displacement. Transverse slope would be considered in the grillage model if width-span ratio is greater than 0.8. Vertical displacement of cross section is increased linearly up to 758% when the transverse slope is change from 0 to 2%.

     

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