Smart city infrastructure management based on bim+3dgis

          As an advanced stage of urbanization , Smart cities integrate through large systems 、 Next generation information technology interaction 、 Public participation and interaction to achieve sustainable innovation in the city , And then make the urban management more refined 、 The environment is more harmonious 、 More prosperous economy 、 Life is more convenient . With the continuous development of Technology , Information technology means 、 Mobile technology 、 The application of smart wear and tools in engineering construction and operation and maintenance stage is constantly improving , Intelligent management of physical information fusion based on urban infrastructure came into being .

         Depending on the BIM This three-dimensional model containing construction engineering information , Effectively improve the degree of information integration of Construction Engineering , Thus, it provides a platform for engineering information exchange and sharing for the stakeholders of construction projects . But its spatial analysis ability is relatively micro , also BIM The space range supported by the model design software is small , Unable to carry a large range of terrain data , It also does not have the function of analyzing geographical information and displaying the overall environment around the building . Geographic Information System (GIS) It can conduct macro analysis and management of information in the whole earth space , Clearly show the relationship between buildings and geographical environment , Have strong spatial comprehensive analysis ability , It is often used to assist in engineering planning and design , There are also various management analysis related to geographical space in cities . But its limitation is that it cannot show the micro model , Unable to create refined building models and detailed model information .

         therefore , take BIM And 3DGIS Technology integration can simultaneously create fine models of buildings and manage and analyze geographic information of large scenes , The analysis is realized 、 Manage massive data from micro to macro , It can also display visual information more comprehensively . With BIM and GIS Management means of physical information fusion with technology integration as the core , It can optimize the management of traditional infrastructure , Significantly improve the intellectualization of urban construction management .

1、 summary

1.1 BIM+3DGIS Current situation of technology application

         The three dimensional GIS It can be based on the terrain and surrounding macro feature information , by BIM Provide large scene planning 、 Outdoor field of view analysis and other three-dimensional GIS function , Provide decision support ; and BIM The model can be three-dimensional GIS Provide detailed building component information , bring GIS From the outside to the inside of the building , Realize the management of indoor and outdoor integration .

         be based on BIM And 3DGIS Technology integrated software platform development , Domestic experts 、 Scholars have carried out some research . Aiming at the self-developed automatic monitoring technology for tunnel surrounding rock measurement , establish GIS Ten BIM X. security monitoring platform of the Internet of things ; Developed based on BIM And 3DGIS Integrated railway bridge construction management information system , from 3D GIS visualization 、 Roaming and 3D space analysis to BIM Construction Management 、 Construction dynamic simulation and construction schedule management ; Developed based on ZTMapGIS 3D building information management system , The visual domain analysis of building model is realized 、 Tube burst analysis 、 Fire escape simulation and other functions .

      The traditional construction of intelligent management system is mainly based on manual operation and maintenance , There are many problems , for example : The utilization rate of equipment is very low ; High repetition rate ; At the same time, the interconnection, sharing and exchange of intelligent physical system monitoring and information management cannot be realized , It cannot meet the functional requirements of business collaboration in integrated management and services of intelligent construction . At present, many urban infrastructure systems are independent 、 A large number of information islands 、 Problems such as weak digital foundation , Infrastructure is difficult to visualize 、 Informatization and efficiency , The combination of digitalization and automation is seriously insufficient , Lack of unified monitoring and operation and maintenance platform .

         Intelligent management of physical information of infrastructure can drive the development of urban construction management . The development mode from basic physical digitalization to information internet, Internet of things and Cloud Computing Foundation is the development trend of intelligent construction of physical information management of smart city infrastructure .BIM And GIS The integration of can realize multi-scale urban management from micro to macro , Indoor navigation 、 Emergency management in public places 、 Urban and landscape planning 、 The simulation of various environmental conditions and other aspects will produce immeasurable value .

         Smart management ideas should serve the planning of infrastructure 、 Design 、 The construction of the 、 Operation and maintenance and other processes . therefore , The traditional urban infrastructure construction management process and intelligent management ideas need to be quickly connected 、 Collaborative integration , Intelligent management based on physical information collaboration should be adopted , Build an intelligent management platform for infrastructure physical information fusion .

2、 Intelligent management platform framework design

         The intelligent management platform of physical information fusion of urban infrastructure is based on BIM and GIS Technology convergence , Get the physical accurate information data and real-time status information of the project , Realize basic information data management 、 Integrated resource management 、 Structural health monitoring 、 Safety assessment and early warning 、 Command and control functions . According to the needs of intelligent infrastructure integrated management , Starting from the overall management idea of management and control , Integrate real-time monitoring data of physical devices 、 Alarm information 、 Dynamic data such as linkage control information , Combining cloud computing 、 Cloud storage, big data mining and other technologies , For the infrastructure lifecycle 、 structural information 、 Deep mining of maintenance information and operation information 、 Correlation analysis and prediction analysis , Establish infrastructure management and maintenance model , And pass BIM Ten GIS Technology integration visualizes the physical monitoring information of infrastructure , Physical information fusion , Provide strong maintenance decision-making and support for the management and maintenance department .

         The integrated physical information fusion intelligent system includes environmental monitoring system 、 Drainage system 、 Power transformation and distribution system 、 Intelligent lighting system 、 Access control system 、 Fire fighting system, etc . Pictured 1 Shown , Infrastructure physical information intelligent management platform is divided into 4 Subsystem , They are environmental physical equipment monitoring system 、BIM Ten 3DGIS System 、 Operation and maintenance platform and information data analysis system . Different projects need to combine their own characteristics , Comprehensively consider the intelligent management platform architecture , Combine the required logical architecture 、 Functional structure , Systematic construction is based on BIM Ten GIS Integrated physical information intelligent management platform .

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3、 be based on BIM+3DGIS Functional requirements of physical information intelligent management platform

3.1 BIM+3DGIS Three dimensional information management

       3DGIS The map module is based on the three-dimensional spatial physical information data resource database , Integrated image data 、 vector data 、 Building model , Provide visual construction management services for managers , Visually display the construction geographic information 、 Location distribution , Surrounding roads 、 facilities 、 Environmental information and important units , Improve the accuracy of work , Promote construction 、 Space 、 Scientific management of facilities and equipment . stay 3DGIS Put BIM Model , Three dimensional pass GIS Virtual reproduction of regional buildings 、 Pipe network system and other equipment , Real scene roaming in 3D scene 、 Inquire about 、 Statistics and various spatial analysis functions .

3.2 Mocha ITOM

        1） Equipment and asset management . Utilize BIM Relevant data and information of equipment and assets provided by the model , Use information technology to strengthen the supervision of equipment and assets , Reduce idle waste of assets , Give full play to the efficiency of the equipment , Make the owner more standardized in the management of equipment assets , And then improve the management level as a whole . This module shall provide visual management of equipment 、 Information Service 、 Fault analysis 、 Safety assessment and other operation functions .

        2） Work order management . The work order management module is conducive to the loss prediction of facilities and equipment and the formulation of preventive maintenance plans . The management personnel can according to the urgency or specific needs of the work order , Make an implementation plan , Calculate execution cost , For the preliminary work, from application to approval 、 perform 、 The completion and even the final work report provide a complete process management .

        3） Health monitoring and early warning . Platform to BIM The model is the carrier , Through IOT equipment and network transmission means , Real time monitoring 、 Monitoring analysis 、 Alarm query 、 Quality evaluation and other functions . Through strain monitoring 、 Load monitoring and other data information , Monitor the use status and development trend of the engineering structure , Make the structure known and controllable in real time , When the relevant monitoring data is abnormal , The system automatically sends warning messages . Technicians can check the abnormal area pertinently , Look for possible accident hazards , Quickly troubleshoot and maintain normal operation .

         The emergency situation can be based on the degree of danger 、 Influence degree 、 Grade the urgency , In the system, the processing order is presented in different color levels , And the type of system that needs to be handled in case of failure , So that managers can quickly select this alarm from the system , Intuitively understand the faulty device , And the specific location of this device in three dimensions , You can also check the historical repair information of the equipment , As a reference for emergency disposal and troubleshooting .

        4） Patrol management . For this platform , It can cooperate with the development of mobile application software for physical equipment inspection management and daily equipment maintenance records . meanwhile , When a physical device fails , The fault information can be pushed to the mobile client of the manager at the first time ,APP After receiving the warning information , Management personnel can arrive in time and effectively deal with equipment problems , Reduce failure losses .

3.3 Environmental monitoring management

         Reserve interfaces through the management platform , For the front camera 、 Encoder 、 The controller and other equipment shall be managed uniformly , Realize the unified users of the whole network through the management platform 、 Permission and video resource management , Meet the system multi-user monitoring 、 Manage requirements . The environmental monitoring management module should have security equipment management 、 Information is automatically classified and displayed 、 Event query 、 Video review 、 Remote control and other functions .

3.4 Data analysis

         This module is mainly responsible for the energy consumed by the project operation ( Such as : electric 、 water 、 Heat, etc ) Monitoring 、 Record 、 analysis . Through intelligent energy consumption monitoring , Realize the water in the project 、 electric 、 Conduct component monitoring of heating and other energy consumption and sub item data collection of electric energy , Establish a database of energy consumption and cost control , And build a multi-level energy consumption supervision system . adopt BIM The model checks the energy consumption information of equipment in each partition , History can be generated 、 real time 、 Forecast energy consumption trend chart 、 Statistical statements, etc . Monitor the detailed use of various energy sources in real time , Provide intuitive and scientific basis for energy conservation and consumption reduction , Promote the improvement of management level , Reduce operating costs , Make full and rational use of energy , Control waste , Achieve energy conservation and emission reduction , Finally, the purpose of improving energy efficiency is achieved .

4、 be based on BIM+3DGIS The value of integrated physical information fusion intelligent management platform

        1） Realize the unified management of all systems . The platform can make full use of the data of each subsystem , It can release information on a unified platform 、 Carry out data maintenance and secondary utilization in a unified integrated data management system 、 Adjust the parameters of the system in the unified configuration management interface , To truly realize the one-stop management of the platform, the intelligent management of urban infrastructure is a complete whole process information integration platform , It solves the problem that information is easy to be missing in the traditional management process 、 Inconvenient query 、 Inconsistent information expression 、 Isolated information, etc ; meanwhile , Also achieved from the planning 、 Design 、 Intelligent management of the whole process from construction to operation and maintenance , Especially the daily inspection in the operation and maintenance link 、 Health monitoring 、 security management 、 Integration of emergency disposal and other functions .

        2）BIM And 3DGIS Application advantages of technology integration . By way of BIM and GIS Integrate , First model the building , Then share the building spatial information with its surrounding geographical environment , Applied to urban 3D GIS Analyzing , It greatly reduces the cost of building spatial information . Application GIS and BIM The urban system model of the combination of fine building interior and macro road network , It realizes the integrated management of urban aboveground and underground facilities 、 Integrated management of indoor and outdoor facilities , It also realizes the integrated management of visible facilities in life and concealed engineering design , So as to achieve the intelligent management of urban all factor space facilities .

        3） The platform operation is simple and efficient . The data on the platform are high value-added information that can be reused , Be able to fully operate and manage according to the needs of managers or work characteristics , Thus reducing the professional threshold for platform managers to operate various systems , The construction and management process of the platform is really driven by requirements , It enables managers to separate from massive and cumbersome information data and complex operations , While doing a good job in management, it can also effectively reduce human costs .

        4） Platform management has no geographical restrictions . Based on Cloud Computing 、 The intelligent management platform developed by information technology such as the Internet of things has high compatibility and can also carry out remote control , Not subject to geographical restrictions , It can effectively reduce the repeated construction of the basic software and hardware environment , Lower costs and flexible management .

5、 A number of BIM+GIS Application case of integrated physical information fusion intelligent management platform

5.1 Smart site management of Chengdu fanyue city site

         Smart construction site refers to the use of information technology , Establish the project information model through the three-dimensional design platform , Combine the intelligent hardware of the Internet of things to collect project related data in real time , Build an information system for construction process management , Realize collaborative interconnection 、 Intelligent monitoring 、 Efficient management mode of scientific decision , And mine and analyze the engineering information model and the engineering environment data collected by the Internet of things , Provide process trend prediction and scientific plan for project construction , Realize visual management of engineering construction and intelligent decision-making of physical information fusion [fist. The case is based on BIM Ten GIS At the core , Take the project construction stage management as the main line , Explore and build a smart site management platform . chart 2 It is during the foundation pit excavation inspection of the project BIM Model in 3DGIS Show in .

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5.2 Huanghua Port smart port integrated management Gallery smart infrastructure cloud platform

         Huanghua Port project will be the leading physical perception construction in China 、 Intelligent integrated cloud platform , Using cloud computing 、BIM、 The Internet of things 、 Big data and other modern information technology applications , Build a smart environment , Effectively save various resources , Form a smart ecological environment based on physical information and green environmental protection . Huanghua Port smart port integrated pipe gallery BIM Ten 3DGIS Ten FM Ten IOT Intelligent operation and maintenance management platform system , Pictured 3 The system is shown in the form of single host and double screens , Master physical macro geographic information to micro facility and equipment information , And get monitoring data from the event processing framework 、 Maintain records 、 Statistical analysis and other information .

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5.3 Inner Mongolia comprehensive pipe gallery BIM+GIS+VR Smart infrastructure cloud platform

         The project has developed a comprehensive pipe gallery VR Interactive systems , Include VR Helmet roaming , And device attribute query 、 Interactive functions such as environmental monitoring and query . With the help of VR System , Help non professionals better understand the internal structure of pipe rack equipment 、 Operational status 、 Accident status 、 Maintenance methods, etc., establish pipe gallery BIM/VR System , And the real-time data collected by the wireless sensor is compared with VR System interaction , Experience visualization 、 Digitization 、 Intelligent immersive effect , chart 4 A simulation example is shown .

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6 Conclusion and Prospect

        BIM And GIS Integrated applications provide data base and technical support for building smart cities . Infrastructure BIM Model Integration GIS Monitoring data , Then municipal roads 、 Bridge and tunnel 、 The working status and other information of rail transit can be fed back to BIM In the model , This has important practical significance for multi-scale urban infrastructure management . Compared with the traditional construction of intelligent system, the information is relatively isolated 、 Poor interactivity 、 Low level of digitization , be based on BIM Ten GIS Intelligent management platform in information sharing and integration 、 visualization 、 collaborative 、 Remarkable results have been achieved in terms of safety . But in BIM Ten GIS Technology integration is at the stage of exploration , be based on BIM Ten GIS The development of intelligent management platform will face more challenges , for example : How to achieve BIM Model lightweight 、 Data format conversion and standard extension . Besides ,BIM And GIS In the integrated application of , It can be combined with other technologies ( Like the Internet of things 、 Big data, etc ), To enhance the timeliness of smart city management 、 Information sharing and data accuracy . therefore , Different projects need to combine their own characteristics , Comprehensively consider the intelligent management platform architecture , Combine the required logical architecture 、 Functional structure and auxiliary technology , Systematic construction is based on BIM Ten GIS Integrated physical information intelligent management platform .

         be based on BIM Ten GIS The physical information fusion intelligent management platform will be a carrier that can fully perceive , implant VR technology 、 The Internet of things 、 Innovative construction mode of advanced technologies such as cloud computing , Create an online virtual world presented in data enrichment , Truly build a smart city from the source .