Research And Application Of BIM Technology In Construction Of Zhangjihuai Railway Nanshan Bridge

At present,BIM technology has been widely paid attention to in the field of high-speed railway bridge construction,and has obtained a large number of application experience and results.However,in the collaborative design of temporary structures and application construction of preliminary planning project calculation scheme selection In terms of construction process organization and planning,there is also a widespread problem of insufficient application depth,which restricts the landing application of BIM technology for high-speed railway bridge.Theoretically,bridge BIM technology should be based on in-depth analysis of bridge structural characteristics and appropriate modeling strategies to build an information model that meets a certain level of accuracy.Then,based on this model,it can be applied to the actual bridge construction technology to bring practical value to the construction project.When the bridge structure is complex and large in scale,it is particularly important to study and deepen the application of bridge BIM technology,which is conducive to exploiting the potential and increasing the efficiency of complex bridge construction technology.This paper takes the newly built Zhangjihuai High-speed Railway Nanshan Bridge as the research background,and adopts BIM technology to conduct in-depth research and application of the construction technology of the bridge.The main contents include:(1)At the bridge as the research object,analyzes the circuit information comprehensive arrangement geometry information and geographic information,adopt appropriate means of modeling,implementation level meet the G4 to quickly build Bridges BIM information model,and on this basis to create BIM + GIS model,realize the model in the prophase planning quantity statistics The application of visualization clarificaiton construction progress management(2)Formwork is an essential temporary structure in bridge construction.Combined with the main girder structure characteristics of Nanshan Bridge,the appropriate type of formwork is selected,the structural characteristics and model information are condensed,and the template model is constructed by Revit software.Meanwhile,in view of the poor synergy of Revit when creating the model Based on the open source visualization engine of Pythonocc,the optimization and creation method of the main girder template is studied.Finally,the mechanical model of the template is written in Python language and the MCT command flow is calculated.The BIM technology is used to realize the rapid design,calculation and drawing of the main girder template(3)The support design is an important link in the bridge construction,and the design scheme directly affects the construction safety.In view of the complex engineering background of Nanshan Bridge with high pier and multi-line parallel beam body,the appropriate support form is selected,and the efficient design and checking calculation of the support scheme is realized through BIM technology At the same time,Python language was used to write the MCT command stream of the parameterized steel tube support system.Different support architectures were compared and selected,and a more reasonable support scheme was obtained(4)Support design is an important part of bracket design,with a detailed bridge bracket model building is a research topic of BIM technology Combination of nanshan bridge bracket design,analyzing the characteristic of its members,efficient modeling strategy is adopted to accomplish the stents BIM model to quickly build,to support the quantities of statistics Visual clarificaiton Design drawings and construction schedule management to provide technical support...