A Model Experimental Study of the Continuous Curved Box Girder
连续曲线箱梁模型试验研究

A two-span continuous curved box girder model was made with Perspex.The span of the two-span continuous box girder model was 45cm 45cm.Experimental studies were preformed with the model under vertical concentrated loading and vertical uniformly distributed loading respectively.Vertical concentrated load was applied through a lever system.Vertical distributed loads were applied with specially made standard strips of weights.Adopting the methods of semi-bridge measurement and temperature self-compensation,the strain values were measured by YJ-25 static resistance strain set,balance box,and all these data were the averages of the readings under different classified loadings.The distributions of stress and strain on cross section were obtained from the experiments.The experimental results were compared with the finite segment results and the finite element results.A good agreement is obtained.The accuracy of theory is verified by the experiments.