Shear Lag Effect of Concrete Box Girders Considered Varying Flange-depths
Lin Pengzhen,Yang Zijiang,Liu Fengkui,Ji Wei and Zhang Yuanhai
DOI:10.3969/j.issn.1674-4764.2013.01.013
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2013,Pages 76-79
- Abstract
According to concrete box beam which flanges depth varying along the orientation of cross section, using variational principle of potential energy, new analysis method of shear lag is proposed for single cell concrete box beam. For simply supported girders and cantilever girders, general analysis of varying flange-depths influence on positive and negative shear-lag effect and deflection have be done. It's shown that varying flange-depths have influence both on sectional stress and deflection. Considering the varying flange-depths have effect on the calculation results of up to 15%.