为了推动智慧重载铁路建设,提升工务设备智能运维水平,采用大数据、BIM(Building Information Modeling)和GIS(Geography Information System)技术构建了工务设备全寿命周期管理系统,解决了数据孤岛等问题,实现了重载铁路工务设备数字...为了推动智慧重载铁路建设,提升工务设备智能运维水平,采用大数据、BIM(Building Information Modeling)和GIS(Geography Information System)技术构建了工务设备全寿命周期管理系统,解决了数据孤岛等问题,实现了重载铁路工务设备数字化、精细化管理。该管理系统将以设备为核心的各类数据予以统一存储、管理和共享,并通过制定工务设备及构件的统一分类编码规则,使得桥梁、隧道的BIM模型和线路单体构件矢量图以及检测数据、设计参数、病害信息等均可综合展示,为运维管理部门提供了高效便捷的数据服务。使用神经网络等技术对设备进行状态评估及变化趋势预测,为研究工务设备状态变化规律、制定养护维修决策提供了数据支持。展开更多
The monomer agglomeration of nonmetallic inclusions was simulated with a diffusion limited aggregation （DLA） model of the fractal theory. The simulation study with a random two-dimensional diffusion was carried out....The monomer agglomeration of nonmetallic inclusions was simulated with a diffusion limited aggregation （DLA） model of the fractal theory. The simulation study with a random two-dimensional diffusion was carried out. The results indicate that the DLA model can be used for the simulation of agglomeration behavior of the cluster-type inclusions. The morphology of clusters was observed with SEM and compared with the simulated agglomerates. The modelling procedure of the DLA model is applicable for the agglomeration process. The uncertainty of agglomeration process and the persuasive average agglomerative ratio was analyzed. The factors about the agglomerative ratio with the collision path distance and the size of particles or seed were discussed. The adherence of the nonmetallic inclusions on the dam, the weir and the walls of a tundish, and the absorption of inclusions by stopper or nozzle were also discussed.展开更多
文摘为了推动智慧重载铁路建设,提升工务设备智能运维水平,采用大数据、BIM(Building Information Modeling)和GIS(Geography Information System)技术构建了工务设备全寿命周期管理系统,解决了数据孤岛等问题,实现了重载铁路工务设备数字化、精细化管理。该管理系统将以设备为核心的各类数据予以统一存储、管理和共享,并通过制定工务设备及构件的统一分类编码规则,使得桥梁、隧道的BIM模型和线路单体构件矢量图以及检测数据、设计参数、病害信息等均可综合展示,为运维管理部门提供了高效便捷的数据服务。使用神经网络等技术对设备进行状态评估及变化趋势预测,为研究工务设备状态变化规律、制定养护维修决策提供了数据支持。
文摘The monomer agglomeration of nonmetallic inclusions was simulated with a diffusion limited aggregation （DLA） model of the fractal theory. The simulation study with a random two-dimensional diffusion was carried out. The results indicate that the DLA model can be used for the simulation of agglomeration behavior of the cluster-type inclusions. The morphology of clusters was observed with SEM and compared with the simulated agglomerates. The modelling procedure of the DLA model is applicable for the agglomeration process. The uncertainty of agglomeration process and the persuasive average agglomerative ratio was analyzed. The factors about the agglomerative ratio with the collision path distance and the size of particles or seed were discussed. The adherence of the nonmetallic inclusions on the dam, the weir and the walls of a tundish, and the absorption of inclusions by stopper or nozzle were also discussed.
