Construction Monitoring And Simulation Analysis Of Continuous Rigid Frame Bridge

In the process of sustainable development of transportation,large-span,economic and reasonable continuous rigid frame bridge often be built in the river,deep groove.Construction process of building a bridge is very long and complicated,in order to guarantee the precise closure of the bridge,qualified line shape,and elevation satisfied the design requirements after operation for a period of time,in the construction process of each construction stage of the superstructure,deflection were forecasted,and according to the actual monitoring results,the monitoring of the every phase in construction is the key.In this paper,a bridge under construction is taken as an example to study the construction monitoring of continuous rigid frame bridge.Firstly the related theory of bridge construction and monitoring methods were summarized,the purpose of construction monitoring,and follow the principle of continuous rigid frame bridge were described;secondly,a bridge project as the research background,using the finite element software Midas/Civil model structure,through theoretical calculation,the formwork placing elevation in every construction phase was forecast to provide guidance for construction;then,the actual stresses and line shape of bridge were monitored in the entire construction process,the actual measurement data was compared with calculated results,according to the actual situation,the parameters were adjusted to modify the ideal state,change of stress and line shape was analyzed by the implementation of feedback control analysis,the deflection and stress of section for each stage were strictly control.