Research And Application Of Hydro-engineering Information Model(Hydro-EIM)

There are several urgent problems for hydro-engineering to be solved during itsfull life-cycle process as follows. First, loss of information is serious in the phases ofproject life cycle. Second, efficiency of design for engineering is low. Third, level ofinformation sharing management is backward. Last, utilization and expression ofinformation fails to effectively serve projects. In this paper, hydro-engineeringinformation model (Hydro-EIM) and its implementation framework applying tohydraulic and hydroelectric industry are established with in-depth study oncharacteristics of hydro-engineering projects. Through research on modeling, sharingmanagement and utilization of Hydro-EIM, the theoretical and methodology system,which is with Hydro-EIM at the core and contains information integration and storage,collaborative design of information model, sharing management of information model,interaction and conversion of information model and also utilization and feedback ofinformation model, are presented. To achieve these goals, the following researches areconducted and some achievement has been obtained:(1) Theoretical and methodology system of Hydro-EIM establishment isbuilt, and a collaborative design platform on the basis of Hydro-EIM isdeveloped.Classification, encoding and storing methods of Hydro-EIM with departmentinformation model, submodel of department information model and componentinformation model at the core are presented, in order to realize dimensionalintegration of information in each phase of project life cycle. Fast modeling method ofHydro-EIM geometric data which is based on parametric feature-based modeling,component library and model template library is provided. Theory of Hydro-EIMcollaborative design using cloud platform is analyzed which is with collaborativeorganization structure and collaborative design workflow at the core. Based on theabove-mentioned research, theoretical and methodology system of Hydro-EIMestablishment is set up. Then a collaborative design platform on basis of Hydro-EIMwhich serves design institutions is developed.(2) Implementation method of Hydro-EIM sharing management is discussed,on basis of which, a collaboration and sharing platform of hydro-engineering is developed.Implementation method of Hydro-EIM sharing management with sharingmanagement of information and interaction and conversion of information model atthe core is discussed. On basis of development of existing commercial cooperativeoffice system, a collaboration and sharing platform with Hydro-EIM at the core whichserves all participants involved is developed.(3) Implementation method of Hydro-EIM utilization and feedback withdynamic safety information model at the core is discussed.First, method of dynamic construction schedule refined prediction based on realmonitored data and Bayesian updating techniques, and method of dynamic mappingfrom dynamic construction schedule state to design information model are proposed,on basis of which, establishing hydro-engineering dynamic construction scheduleinformation model is realized.Second, parametric component library of monitoring instruments and time seriesanalysis forecasting model for safety monitoring of hydro-engineering building androck are set up, on basis of which, establishing hydro-engineering dynamic safetymonitoring information model is realized.Third, research on establishment of dynamic mapping relationships betweenconstruction status (i.e., construction schedule status and construction conditions) andnumerical simulation analysis model is conducted, on basis of which, method ofstructure safety dynamic simulation is presented. Further, establishinghydro-engineering dynamic structure safety numerical simulation information modelis realized.Last, based upon dynamic structure safety numerical simulation informationmodel and in conjunction with3D dynamic visualization development techniques,dynamic visualization method of hydro-engineering structure safety and schedulestatus coupling is proposed. In this method, continuous and dynamic3D visualizationdisplay of dynamic construction progress appearance and the corresponding structuresafety status are carried out using dynamic structure safety numerical simulationinformation model as its carrier, providing feedback to guide the construction.(4) Full-scale3D structure safety and schedule coupling dynamic simulationand visualization method for roller compacted concrete (RCC) gravity dam isestablished, and a system of structure safety and schedule coupling dynamicsimulation and visualization for RCC gravity dam is developed. Theory of dynamic safety information model is applied to construction processof RCC gravity dam, resulting in the birth of full-scale3D structure safety andschedule coupling dynamic simulation and visualization method for RCC gravity dam,meanwhile a system of structure safety and schedule coupling dynamic simulationand visualization for RCC gravity dam is developed based on the finite elementanalysis software platform and dynamic visualization technology. The case studyshows that the system developed can quickly and conveniently provide a dynamic andcontinuous change process of status and information for structure safety and scheduleand a visual tracking analysis for information of safety control indexes of dam sectiongroups under proposed construction scheme for policy makers, in order to providedata support to comprehensive control of structure safety and schedule duringconstruction process.