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
This paper presents an overview on the wide-ranging track structure studies at the Tampere University of Technology(TUT),Finland dealing with the key aspects of track geotechnics related to high-speed passenger traffi...This paper presents an overview on the wide-ranging track structure studies at the Tampere University of Technology(TUT),Finland dealing with the key aspects of track geotechnics related to high-speed passenger traffic on ballasted tracks.Special attention is paid to ballast and sub-ballast,while also considering frost action,embankment stability,track stiffness,track geometry and transition zones.As a result,this paper states that understanding the ballast degradation mechanism and its consequences and assessment of its condition occupy an important role in the construction and maintenance of a smooth high-speed rail line.The choices related to building the sub-ballast also have a dramatic impact on later track deformations and maintenance needs.In cold climate,especially where seasonal frost occurs,understanding and taking into account the frost action mechanism is crucial.Especially in the maintenance and rehabilitation planning of existing tracks,high-class analyses of ground penetrating radar data and its integrated analysis with other data can yield considerable benefits.展开更多
Fate is always an eternal subject that many scholars, artists, critics and writers utilizing this vast and specific subject in their compositions. Therefore, in this text, people's views of fate will be analyzed f...Fate is always an eternal subject that many scholars, artists, critics and writers utilizing this vast and specific subject in their compositions. Therefore, in this text, people's views of fate will be analyzed from two typical characters:Achilles and Childe Harold, who are heroes in their times. Through their life tracks, this text will explore the ideal model of one's destiny in the specif-ic era, and from the economic development, social condition and cultural background, the reason or cause of these views will be traced and offer some enlightenment for what people should compose today.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。
基金Project supported by the Finnish Transport Agency
文摘This paper presents an overview on the wide-ranging track structure studies at the Tampere University of Technology(TUT),Finland dealing with the key aspects of track geotechnics related to high-speed passenger traffic on ballasted tracks.Special attention is paid to ballast and sub-ballast,while also considering frost action,embankment stability,track stiffness,track geometry and transition zones.As a result,this paper states that understanding the ballast degradation mechanism and its consequences and assessment of its condition occupy an important role in the construction and maintenance of a smooth high-speed rail line.The choices related to building the sub-ballast also have a dramatic impact on later track deformations and maintenance needs.In cold climate,especially where seasonal frost occurs,understanding and taking into account the frost action mechanism is crucial.Especially in the maintenance and rehabilitation planning of existing tracks,high-class analyses of ground penetrating radar data and its integrated analysis with other data can yield considerable benefits.
文摘Fate is always an eternal subject that many scholars, artists, critics and writers utilizing this vast and specific subject in their compositions. Therefore, in this text, people's views of fate will be analyzed from two typical characters:Achilles and Childe Harold, who are heroes in their times. Through their life tracks, this text will explore the ideal model of one's destiny in the specif-ic era, and from the economic development, social condition and cultural background, the reason or cause of these views will be traced and offer some enlightenment for what people should compose today.
