Monitoring and Analysis of Pushing Construction of Steel Box Girder across Expanded Expressway
Taking the expansion project of Huai'an-Jiangdu section of the Beijing-Shanghai Expressway as the background,a two span continuous steel box girder bridge adopts the construction method of"front-end walking jacking+rear end hoisting in place at one time",introduces its construction scheme in detail,analyzes its construction process numerically by establishing a finite element model,and puts forward the construction monitoring scheme.The monitoring measured data are compared with the theoretical calculation data,it is found that the theoretical values of front-end displacement,measuring point stress and fi-nal alignment of steel guide beam are in good agreement with the measured values,and the values are within the specified val-ue range.The research results show that the construction scheme is feasible and can provide reference for similar projects.
steel box girgerwalking-type jacking and pushingmechanical analysisconstruction monitoring
万方数据
维普
