A typical building project has a long life in the maintenance stage. Also, the cost at this stage is enormously huge compared to planning, design and construction phases. In the earlier stage, which is planning or des...A typical building project has a long life in the maintenance stage. Also, the cost at this stage is enormously huge compared to planning, design and construction phases. In the earlier stage, which is planning or design phase, however, many project participants put little emphasis on the maintenance information. As a result, important maintenance data is missing and erroneously feedback to the 3D/BIM model. This research provides a generic process model for maintenance information management for building facilities. The authors have identified that there exist most-frequently used information areas: checking information, material information, equipment information, supplier information, and maintenance history information. Each information area should be embedded in the BIM model in order to effectively feedback to the operation and maintenance stage in the project. Thus, the study has proposed a novel data format structure which can effectively link the 3D/BIM object with the maintenance data. The demonstration project shows how the data format structure is used. The contribution of this study is to provide guidance to a project practitioner by step-by-step approach in dealing with the significant maintenance information in the earlier stage of the construction project.展开更多
为解决轨道交通工程的建筑信息模型(Building Information Modeling,BIM)体量庞大导致的数据整合难度大的问题,本文提出了BIM轻量化技术。通过改进二次误差测度算法在降低模型复杂度的同时保留模型的细节和几何特征,并采用三角网格相似...为解决轨道交通工程的建筑信息模型(Building Information Modeling,BIM)体量庞大导致的数据整合难度大的问题,本文提出了BIM轻量化技术。通过改进二次误差测度算法在降低模型复杂度的同时保留模型的细节和几何特征,并采用三角网格相似性度量算法减少相似构件的存储次数,从而降低模型存储的数据量;对模型数据进行拆分和分步传输,从而提升模型传输速度;通过局部重建和动态剔除冗余构件优化显示效率,并对模型进行分区渲染,从而减少运行耗时。经在广州地铁18号线磨碟沙站应用,采用该技术将大体量模型轻量化后,占用的存储空间减少15.71%~35.87%,网格数量减少21.46%~31.65%,传输速度提高2.5~10.0 MB/s,且模型主要几何构件能以50.0~59.8帧/s的速度在自主开发的图形平台上清晰展示。展开更多
针对高速铁路(简称:高铁)接触网在设计、制造、施工和运营维护(简称:运维)各阶段业务数据共享共用及业务系统协同不足的问题,根据接触网工程管理需求,结合智能高铁“模数一体,轴面协同”管理理念,开展基于BIM(Building Information Mode...针对高速铁路(简称:高铁)接触网在设计、制造、施工和运营维护(简称:运维)各阶段业务数据共享共用及业务系统协同不足的问题,根据接触网工程管理需求,结合智能高铁“模数一体,轴面协同”管理理念,开展基于BIM(Building Information Modeling)技术的高铁接触网全生命周期管理研究。通过BIM模型和数据一体化传递、BIM模型传递转化与轻量化等关键技术,构建接触网全生命周期管理模数一体化平台,并在渝昆(重庆—昆明)高铁建设过程中进行多阶段的应用验证,全面推进接触网工程智能化提升与高质量发展。展开更多
BIM(Building Information Modeling,建筑信息模型)是智慧城市基础设施数字化的关键技术,其人才缺失严重制约了建筑业转型升级、智慧城市建设和数字经济发展。而现有的BIM课程及教学体系主要面向建筑设计与施工管理,已无法满足国家、行...BIM(Building Information Modeling,建筑信息模型)是智慧城市基础设施数字化的关键技术,其人才缺失严重制约了建筑业转型升级、智慧城市建设和数字经济发展。而现有的BIM课程及教学体系主要面向建筑设计与施工管理,已无法满足国家、行业和市场对大数据、人工智能等新一代信息技术和“建筑+城市”BIM复合型人才的需要。为此,构建了面向BIM技术的教学平台,设计了面向大数据和人工智能的BIM应用的综合教学方案,在建筑电气与智能化国家一流专业进行了教学实践,学生课程体验值较高,达到了提升BIM教学水平的目的,为同类专业在BIM复合型人才培养方面提供了参考。展开更多
文摘A typical building project has a long life in the maintenance stage. Also, the cost at this stage is enormously huge compared to planning, design and construction phases. In the earlier stage, which is planning or design phase, however, many project participants put little emphasis on the maintenance information. As a result, important maintenance data is missing and erroneously feedback to the 3D/BIM model. This research provides a generic process model for maintenance information management for building facilities. The authors have identified that there exist most-frequently used information areas: checking information, material information, equipment information, supplier information, and maintenance history information. Each information area should be embedded in the BIM model in order to effectively feedback to the operation and maintenance stage in the project. Thus, the study has proposed a novel data format structure which can effectively link the 3D/BIM object with the maintenance data. The demonstration project shows how the data format structure is used. The contribution of this study is to provide guidance to a project practitioner by step-by-step approach in dealing with the significant maintenance information in the earlier stage of the construction project.
文摘为解决轨道交通工程的建筑信息模型(Building Information Modeling,BIM)体量庞大导致的数据整合难度大的问题,本文提出了BIM轻量化技术。通过改进二次误差测度算法在降低模型复杂度的同时保留模型的细节和几何特征,并采用三角网格相似性度量算法减少相似构件的存储次数,从而降低模型存储的数据量;对模型数据进行拆分和分步传输,从而提升模型传输速度;通过局部重建和动态剔除冗余构件优化显示效率,并对模型进行分区渲染,从而减少运行耗时。经在广州地铁18号线磨碟沙站应用,采用该技术将大体量模型轻量化后,占用的存储空间减少15.71%~35.87%,网格数量减少21.46%~31.65%,传输速度提高2.5~10.0 MB/s,且模型主要几何构件能以50.0~59.8帧/s的速度在自主开发的图形平台上清晰展示。
文摘针对高速铁路(简称:高铁)接触网在设计、制造、施工和运营维护(简称:运维)各阶段业务数据共享共用及业务系统协同不足的问题,根据接触网工程管理需求,结合智能高铁“模数一体,轴面协同”管理理念,开展基于BIM(Building Information Modeling)技术的高铁接触网全生命周期管理研究。通过BIM模型和数据一体化传递、BIM模型传递转化与轻量化等关键技术,构建接触网全生命周期管理模数一体化平台,并在渝昆(重庆—昆明)高铁建设过程中进行多阶段的应用验证,全面推进接触网工程智能化提升与高质量发展。
文摘BIM(Building Information Modeling,建筑信息模型)是智慧城市基础设施数字化的关键技术,其人才缺失严重制约了建筑业转型升级、智慧城市建设和数字经济发展。而现有的BIM课程及教学体系主要面向建筑设计与施工管理,已无法满足国家、行业和市场对大数据、人工智能等新一代信息技术和“建筑+城市”BIM复合型人才的需要。为此,构建了面向BIM技术的教学平台,设计了面向大数据和人工智能的BIM应用的综合教学方案,在建筑电气与智能化国家一流专业进行了教学实践,学生课程体验值较高,达到了提升BIM教学水平的目的,为同类专业在BIM复合型人才培养方面提供了参考。
