BIM Technology Application And Finite Element Analysis On A Through Type Steel Truss Arch Bridge

With the continuous development of the construction information industry,the development of BIM technology conforms to the development trend of the construction information industry.BIM technology provides people with new technical support.It drives the vigorous development of the entire construction industry.As an important branch of the construction field,the improvement of bridge construction technology is even more important.At this stage,in the construction phase of bridge engineering,applying BIM technology to the virtual construction process control of bridges has become the focus of research.In view of the research on the subject of through-type steel truss arch bridges in this paper,Br IM technology was selected to guide the application process of 3D building informatization.The construction drawings of steel truss arch bridges were used to guide the application of Revit for data construction of steel truss arch bridges and approach bridges.Model,BrIM,and model the placement of full scaffolding.After the Revit 3D modeling is completed,the model data analysis is exported as relevant engineering quantity information for reference;BrIM uses the same model,and the model is imported into construction simulation analysis software and rendering software.The process of repeated modeling is reduced.The construction simulation is carried out before the bridge is built,and the reasonable plan is selected accordingly.The efficiency of the construction process was further improved.The theoretical value and the actual construction process are compared and debugged.For the rationalized simulation of the next construction stage,the construction unit carries out the construction according to the construction instructions and advances to the preset target.In the construction process,the actions of the virtual construction process are decomposed,and the construction unit orders are issued,which can achieve fine construction.Introducing Br IM technology,a more reasonable step-by-step construction technology scheme is proposed.Compared with other construction technologies,Br IM provides technical scheme support for reducing time cost and cost technology cost during virtual simulation construction and time.The through-type steel truss arch bridge uses the Midas Civil finite element analysis software to establish a finite element analysis model,respectively model the cross-section matching of each element of the arch bridge,and the main constraint points are constrained.The constraints are restricted.The stress and deformation of the main span of the main bridge are further carried out analysis.The maximum displacement points of the upper chord arch rib and the lower chord arch rib of the steel truss arch bridge and the maximum displacement at the arch foot are calculated and analyzed.During the finite element static analysis of the bridge,the connection between the steel truss arch rib and the bridge deck,It is necessary to closely observe the correlation between the displacement and deformation of the joint and the internal force.Analysis of the deformation and internal force at the connection of the wind bracing part.Increase the test of the tensile force of the boom,the software simulates and analyzes the displacement changes between the arch ribs.After tensioning the boom in the later period,a comparative analysis is made with the tensioning model without the boom,and the key position of the stress change of the bridge after the boom is lifted is obtained.The change between displacement and internal force at this position is calculated.Under the condition of temperature load,the bridge adopts the simulation program of global heating and global cooling,and it is concluded that the overall heating expansion causes the displacement of the arch rib and arch foot to increase.After the global cooling,the corresponding position shrinks as a whole,in line with the corresponding changes.After the moving load and pedestrian load are applied to the bridge,the corresponding displacement and internal force changes are analyzed and relevant conclusions are drawn.In this paper,the modal analysis of the through-type steel truss arch bridge is further carried out.The Leeds method is used to simulate and analyze different order modes of the longitudinal,transverse and vertical bridge directions of the arch bridge.Further analysis and processing.