Technology Research On Construction Control Of Dissymmetrical Restressed Continuous Girder Bridges

The construction monitoring is very important in cantilever construction of bridge.That how to control effectively,make reasonable forecast,the influence of the factors such as linear,stress state and temperature of bridge can be accurately controlled,to ensure the smooth closure of cantilever construction and make the bridge be in the best stress state is the inevitable requirement for bridge operation in security.In the relevant research of bridge construction monitoring technology at home and abroad.It finds the research on the construction control of asymmetric large span continuous girder bridge is still rare in many studies.Based on the structural characteristics of the bridge and the present research situation,this paper makes a summary analysis of the general construction monitoring content.At the same time,the simplified analysis method of the non-symmetrical continuous beam bridge construction monitoring is deduced,and the influence of three prestress to the construction supervisor is analyzed.In this study,the concept of asymmetric value is proposed for the analysis of bridge construction monitoring.The influence parameters,the finite element model and Matlab equation,are deduced by theoretical deduction.In the end,the calculation equation of the asymmetric value is obtained,and the key of this algorithm is proved.In the research of three to the prestressed coupling effect of this paper,the solid modeling analysis of the 0# block of the bridge and the verification of real bridge are carried out.It carries out that three the level of the opposition to the prestress and the layout of the stress control points are greatly affected.