Research On Urban Low-grade Highway Bridge Degradation Model And Management System

With the advancement and deepening of China's urbanization process,infrastructure construction such as low-grade roads and bridges in urban areas has made great progress,and it has promoted economic prosperity and development while bringing convenience to urban residents.However,in the construction and maintenance of urban low-grade highway bridges,there are still problems such as immature construction technology,lack of maintenance funds,and inadequate maintenance techniques.Therefore,it is necessary to improve the management and maintenance of urban low-grade highway bridges.This article therefore carried out the following development and research work:(1)Establish a technical condition evaluation method applicable to urban low-grade highway bridgesAt present,there are few studies on the evaluation of urban low-grade highway bridges in China,and it is mainly for highway bridges with high design standards.Therefore,based on the analysis of the current status of urban low-grade highway bridge management,combined with the advantages of the current highway bridge evaluation method,this paper aims to establish a technical status evaluation system suitable for urban low-grade highway bridges.(2)Establish a degradation model of bridge technical conditionThe bridge management is inseparable from the degradation prediction of bridge technology status,especially the low-grade highway bridges in urban areas are facing the aging of structural functions,inadequate supervision and lack of maintenance funds,in order to make the management department develop a more scientific conservation strategy and avoid disasters caused by structural instability,it is necessary to strengthen the management of the degradation prediction of urban low-grade highway bridges.Based on the analysis of the advantages and limitations of the existing degradation prediction model,combined with the advantages of the widely used grey system prediction model and Markov prediction model,this paper establishes a gray-Markov prediction model,which uses the gray system to simulate the degradation trend of the bridge firstly,and then the Markov prediction model is used to correct the residual.Moreover,the bridge example is used to verify that the model has higher prediction accuracy.(3)Develop urban low-grade highway bridge management systemThe rapid development of computer and Internet technology has gradually reduced the dependence of bridge work on traditional manual management.Based on the summary of the service status of computer management system to urban low-grade highway bridges,this paper develops a urban low-grade highways bridge management system,which is based on the Eclipse development platform,using the Java programming development language,and establishes a connection with the MySQL relational database.The system realize the functions of storing and exporting data of urban low-grade highway bridges,and assessing and predicting the technical status of bridges.