Effect of initial stress of steel tubes on behaviors of concrete filled square tubes

@inproceedings{Qia2007EffectOI,
  title={Effect of initial stress of steel tubes on behaviors of concrete filled square tubes},
  author={Yu Qia},
  year={2007}
}
By considering the effect of initial imperfection,finite element software is used to perform nonlinear finite element analysis of behavior of square concrete-finned steel tubes under axial compression.Based on the theoretical model,the effects of imperfection under different initial stress on the behavior of composite columns are analyzed,offers theoretical foundation for further research.