基于区块链的轨道交通BIM模型安全管理方法

Block-chain Based BIM Model Security Management Method for Rail Transit

近年来,越来越多的轨道交通项目采用BIM来完成设计及实施工作。然而,目前针对工程项目全生命周期中BIM模型文件安全管理方面的研究还较为欠缺。本文提出一种基于区块链技术的BIM模型文件安全管理方法,该方法创新性地采用双私有链模式:项目总链和BIM文件操作链,两条链分别面向不同的用户群体和存储不同的数据。项目总链主要面向项目管理人员,存储BIM模型阶段性成果信息;BIM操作记录链主要面向各专业设计人员,存储BIM模型操作信息。为验证本文方法的有效性,将其应用于某轨道交通项目的设计过程中,结果表明:本文提出的方法能够对BIM模型操作记录数据和BIM模型阶段性成果记录的入链永久性存储,可有效保障设计过程中BIM模型文件的流转及其异常操作的责任溯源,提高了BIM模型文件的安全管理水平。

With the rapid development and application of BIM technology,more and more rail transit engineering projects adopt BIM to assist their designs and implementations.However,there are few studies on security management of BIM model files during their lifecycles.In this paper,a block-chain based BIM model security management method is proposed for rail transit projects.The method consists of two private chains:overall chain and operation record chain.Overall chain is mainly used by project managers to store BIM model files in every milestone.Operation record chain is mainly used by designers of each discipline to record designers'operation information on BIM model.To illustrate whether the presented method is valid and effective,it is applied to a real rail transit project.The results show that the method proposed in this paper works well,and the BIM model files and designer's operation information are all stored in block-chain permanently,which can effectively guarantee BIM model file's safety and trace operation records.