Sensitivity-based Parameter Sensitivity Analysis of Rigid Frame Bridge

Aiming at the parameter sensitivities of the cantilever construction control of a prestressed concrete continuous rigid frame bridge,this paper analyses the influence of several factors on the shape of the bridge by means of the sensitivity theory and the numerical models.The factors mentioned above are unit weight,modulus of elasticity,ambient humidity,deviation of prestress duct,construction load etc.The parameter sensitivity of the bridge shape is discussed in detail.The conclusions herewith can be used as reference to the design and construction of the similar bridges.