Research On Numerical Simulation And Monitoring Control Of Construction Process Of Continuous Arch Bridge

With the progress of social science and technology and the rapid development of the world economy,China’s transportation industry has also been rapidly developed.In the field of bridge engineering,the scale of arch bridge in China has been increasing,and the span has become larger and larger,and the construction technology of arch bridge has become more and more mature.However,due to the increase in vehicle flow and the increase in vehicle load,the problem of insufficient bearing capacity has emerged in the arch bridge.In addition,due to factors such as the natural environment,design and construction,and natural disasters,there are more and more diseases in the current arch bridge,and even lead to safety when serious.accident.Therefore,arch bridge reinforcement has gradually become the focus of domestic research.Firstly,this paper summarizes the research background,research purpose and significance of arch bridge reinforcement at home and abroad through a large number of references,and puts forward the contents and methods of this study.Then,the theory of continuous arch effect involving continuous arch bridge is summarized,the two calculation methods of force analysis of continuous arch bridge when considering continuous arch effect are expounded,and the characteristics of continuous arch bridge and the advantages and disadvantages of each calculation method are combined.Finite element method was chosen as the calculation method of force analysis in the reinforcement process of continuous arch bridge.On the basis of the selected calculation method,this paper introduces Midas Civil,a special finite element analysis software for bridges,and introduces the general steps of modeling.Then,using the finite element analysis software Midas Civil,this paper establishes the finite element model of the Fujiang River Second Bridge in Mianyang City,and makes a numerical simulation of the reinforcement construction process.Through the data analysis,the correctness of the proposed reinforcement construction plan is proved,and the actual reinforcement construction of the Fujiang River Second Bridge is also carried out.Through the numerical simulation analysis and construction control study of the construction process of the Fujiang River Second Bridge in Mianyang City,this paper hopes to provide some reference value for the formulation of the reinforcement scheme of similar continuous arch bridge.