基于BIM的铁路既有线四电施工封锁数字孪生体构建研究

Research on Construction of BIM-Based Digital Twins in Four-Electricity Construction Blockade of Existing Railway Lines

铁路既有线四电施工封锁,是铁路工程的难点和痛点,主要原因为施工封锁不能提前演练,有些不利因素不能提前发现,封锁失利时有发生。为提高封锁开通的施工效率和正点率,研究以BIM和数字孪生技术为核心,结合云技术和WEB技术,提出基于BIM的铁路既有线四电施工封锁数字孪生体构建方法,通过直观、多维度的数据信息为项目管理决策提供依据,能够实现施工封锁的人员、物资、安全、质量、进度和成本等数字化管控一体化集成,设计物理层、数据层、云层三层架构,将铁路既有线四电施工封锁现场的物理数据和运用BIM技术建模的信息数据进行虚实之间精准映射,形成共享数字孪生体,有效解决预估不充分和遇到突发情况的问题,精准管控工程进度、安全、质量、成本,确保顺利正点开通,并为实现工程移交、运维、建维一体数字化奠定基础。

The four-electricity construction blockade of existing railway lines is a difficult and painful point in railway engineering.The main reason is that the construction blockade can not be practiced ahead of time,and some unfavorable factors can not be found ahead of time.Blockade failures often occur.In order to improve the construction efficiency and punctuality rate when the blockade is opened,this study focuses on BIM and digital twin technology as its core,combines cloud technology and WEB technology,and proposes a BIM-based digital twinning construction method for existing railway four-electricity construction blockade,which provides a basis for project managers to make decisions through intuitive and multi-dimensional data information,the digital management and control integration of personnel,materials,safety,quality,schedule and cost can be realized,and the three-layer architecture of physical layer,data layer and cloud layer is designed.Accurately mapping the physical data of the four-electricity construction blockade site on the existing railway line and the information data modeled using BIM technology between virtual and real,a shared digital twin is formed,which effectively solves the problem of insufficient forecast and′unexpected′situation,accurately controls the project schedule,safety,quality,cost,ensures the smooth on-time opening,and lays a foundation for realizing the digitization of project transfer,operation and maintenance,building and maintenance integration.