Research On Visual Construction Control And Maintenance Management Of Continuous Beamarch Composite Steel Bridge Based On BIM

Since BIM(building information modeling)technology was introduced into China around 2000,Considerable development in the field of industrial and civil construction have ben made.However,in the field of bridge construction,the application of BIM is relatively backward,facing many obstacles such as the shortage of environment and talents.In order to promote the application of Bim in the field of bridge construction,strengthen the integration of project information,and realize the full life cycle management of bridges.Based on a continuous beam arch composite steel bridge in Anhui Province and its construction control results,this study explores the application of BIM,and extends the thinking of information preservation and transmission in BIM model.The specific research contents,methods and results are as follows:1.This paper reviews the development and research status of BIM at home and abroad,and expounds the application and significance of Bim in the field of bridge.2.By collecting the design drawings,construction scheme and other information of the project,the finite element model of the whole bridge was built according to the construction stage in Midas,and another form was established by ANSYS to check the calculation results of MIDAS model.Then the construction control line type and key section stress and other information were calculated.The construction control of the bridge during the construction period was completed by arranging measuring points and monitoring on site.According to the analysis of construction control results,the line type and stress of the bridge meet the requirements of construction control and specifications.However,(1)there was a maximum error of 35% between the measured value and the theoretical value;(2)under the most unfavorable load condition,the maximum compressive stress at the arch foot reached 210 mpa,which may lead to the risk of instability;(3)the bridge belongs to a super large bridge with special structure,so it is necessary to conduct bridge load test and set a dynamic stress detection scheme for the bridge,and detect the stress at the key section for a long time,so as to meet the safety of the bridge Practical requirements.3.Combined with the existing drawings and other information,through the PBS principle in the project management,the continuous beam arch composite steel bridge was decomposed,and the family of each component was constructed successively by using Revit,and the whole bridge BIM model was constructed by splicing.Then,based on the Microsoft Visual Studio platform,the program of real-time stress monitoring was developed by simulating the way of real-time data transmission of sensors.Then,the program based on C# language was implanted into Revit platform.By means of component ID,the data correspond to the component one by one,and real-time stress monitoring was carried out on the key parts such as suspenders.Finally,the monitoring results were saved to the corresponding components of the Revit model for transmission.4.Determine the grade evaluation scheme based on the evaluation method of urban bridges and checked by the evaluation method of highway bridges.Then the two methods were programmed and imported into Revit model.In this paper,the diseases in the use stage of the project were preset,and imported into the Revit model.Visualization of the bridge disease in the Revit model and technical grade evaluation were achieved.The results of the solution were compared with existing calculation programs to verify the correctness and applicability of the entire process.It is hoped that this development can provide reference for BIM application in management and maintenance of similar projects.5.Use the knowledge of asp.net and SQL Server database,integrate the existing construction control information and the management and maintenance information in the use stage,and build the management platform of the continuous beam arch composite steel bridge with browser/server architecture.The functions of inputting and searching construction control information and management maintenance information,drawing deflection curve and stress history curve were realized.Besides,the function of lightening the bridge model and visualizing the disease on the Internet.To some extent,it realized the integration of construction control and management maintenance.