Simulation Analysis of Pushing and High Girder Falling Construction for Continuous Steel Box Girders With Small Radius Curve and Variable Slope
In order to analyze the change of mechanical behaviors of every member of continuous steel box girder with small radius curve and variable gradient during pushing and high position falling,the construction of the second(36+56+41)m continuous steel box girders of the E-ramp of tap interchange in Changning County,Sichuan Province was taken as an example.The finite element method was used to numerical simulation calculate the construction of the pushing support and the falling support,the stress state of the pier(including the cap beam)respectively.And the theoretical value was compared with the field measured value.The results show that the error between the measured and theoretical value of the stress of the support and the pier is smaller,and the finite element stress analysis is rea-sonable under each working condition;The deviation between the measured value and the theoretical value of the steel structure stress is within the range of±10％.Under each working condition,collection of the construction mon-itoring data is effective,and the structure isn't unstable failure.
small radius curvevariable slopesteel box girderpushinghigh girder fallingforce analysisstress monitoring
万方数据
维普
