Research On Key Technology Of Construction Control Of Special-shaped Arch And Beam Combination Bridge

The shaped arch and beam composite bridge is more complicated than the general type of arch bridge,which is more complicated than the general type of arch bridge compared to the general type of arch bridge.Advanced construction technology is also in the construction construction,but some new technologies are not mature enough during construction,and the actual project experience is not rich enough.And many experience between different shapeshaped arch bridges are often unable to use,and they are subject to construction processes and methods.Therefore,there are many new problems in each shaped arch bridge that needs to be solved.This paper relies on the background of the Liyang City Storage Power Station,for the structure of this bridge,the key construction control process of the bridge of the shaped arch combined system,the geometric modeling and finite element calculation,the shaped arch is part of the key node The calculation is studied.1.Introduction to the unique foreign-shaped archicular combination system bridge "onsite segment accumulation group",the construction process and construction method of "onsite segment accumulation group",the construction process,the key construction process,the key construction process.2.Establish a finite element analysis model of the construction phase of the whole bridge,analyze the structural force and deformation performance of the key stages of each construction process,and the key stage of the construction process,the top pushing process,the arch ribs improve process,The lean tensile process has conducted in-depth calculation and analysis.Ensure the safety and smooth progress of the construction process,meet the control requirements for linear and internal force during the construction process.3.The positive design method based on BIM software from geometric model to finite element refinement analysis is established.The parameterized modeling is established by CATIA,and the modeling idea of "skeleton + template" is used to achieve rapid modeling of the batch.Complete the pretreatment of geometric models by Hypermesh,including material assignment,grid division,load arrangement,etc.,through ABAQUS to complete the calculation and post-processing process,further through the calculation method of the child model,the key force to the model can be further deepened Calculation analysis can efficiently complete the entire design process.4.Select the construction key parameters for the bridge of the shaped arched architecture for sensitivity analysis.The effects of various errors,linear,main beams,and main arch stress have been summarized,and there is a certain reference for the construction construction of similar bridges.