Research On BIM-based Parametric Modeling And Auxiliary Maintenance Decision Of Asphalt Pavement Diseases

With the gradual improvement of the highway network,the highway transportation industry in China has begun to transform from the large-scale construction period to the continuous maintenance period.Although the current road maintenance technology and management can meet the basic needs of road maintenance work,the integration of construction,management and management information by using BIM technology will help the road maintenance department to reduce costs,control progress and improve quality.At present,BIM technology has been applied in the field of highway engineering design,but it is seldom applied in pavement maintenance.At the same time,the combination of highway maintenance and digital technology is also an important part of the current road maintenance tasks.In view of this problem,this paper designs and realizes the coding reference of asphalt pavement diseases,forms the intuitive BIM modeling method for pavement diseases,and conducts the dynamic evolution simulation on the time sequence of the diseases through the BIM technology to carry out maintenance decision analysis.The main work of the thesis includes:1.According to the classification and classification requirements of pavement diseases,the characteristics of common pavement diseases were analyzed,and the assessment attributes of each disease were studied.The Omniclass coding rule was used as a reference to realize the design of asphalt pavement disease codes on the basis of highway surface coding,and the results were formed as a reference.2.The modeling and application in pavement diseases as the breakthrough point,study of pavement crack,rutting,pit slot,subsidence,the common road diseases such as crack structure characteristics,analysis of different diseases on the testing data and model building demand,the tested data driven by chateau marmont semantics and structure for pavement diseases parameterized modeling,and matching fusion and road subject BIM model,at the same time form a common disease in the parametric modeling method.3.By compiling computer program code,database based on QT disease,will get disease detection data in the database integration,and associated 3 d GIS system,realize the parametric modeling and coding and positions of the disease of automatic matching function,the disease model code,disease,disease location and other information.4.Research goal driven pavement dynamic evolution simulation method,build parameterized BIM diseases based on different time began data model,realize the dynamic simulation of road damage process and associated with road condition index,based on this through the GM(1,1)prediction model to predict the condition index,assist maintenance decision-making and the choice of measures.