On the basis of analyzing the history and characteristics of the underground space exploitation and the urban space development in Guangzhou,and making a thorough study on the underground space exploitation based on t...On the basis of analyzing the history and characteristics of the underground space exploitation and the urban space development in Guangzhou,and making a thorough study on the underground space exploitation based on the subway building,this paper points out some main problems in the exploitation of underground space in Guangzhou,and emphasizes that Guangzhou must develop the underground space on a large scale with the aid of the subway building,and puts forward a proposal on the urban space coordinate development between on-ground and underground in Guangzhou City.展开更多
This study facilitates the scalability of as-built data from an earlier street level to underground transportation sites from the life-cycle perspective of urban information maintenance. As-built 3D scans of a 6 km st...This study facilitates the scalability of as-built data from an earlier street level to underground transportation sites from the life-cycle perspective of urban information maintenance. As-built 3D scans of a 6 km street were made at different time periods, and of 3 underground Mass Rapid Transit (MRT) stations under construction in Taipei. A scanned point cloud was used to create a Building Information Modeling (BIM) Level of Development (LOD) 500 as-built point cloud model, with which topographic utility data were integrated and the model quality was investigated. The complex underground models of the transportation stations are proofed to be in correct relative locations to the street entrances on ground level. In the future the 3D relationship around the station will facilitate new designs or excavations in the neighborhood urban environment.展开更多
Due to multiple advantages in terms of capacity,safety,dependability and punctuality,rail mass transit plays a vital role in easing urban traffic congestion.In addition,rail mass transit is environmentally friendly.Ev...Due to multiple advantages in terms of capacity,safety,dependability and punctuality,rail mass transit plays a vital role in easing urban traffic congestion.In addition,rail mass transit is environmentally friendly.Even though it is beneficial to passengers in urban areas,security issues have become increasingly serious in recent years.To improve the safety and dependability of the rail mass transit system to some extent and limit the loss to a bare minimum,it is necessary to identify and evaluate the hazards connected with rail mass transit in the early stages of the system’s operation.Against this backdrop,this research employs a riskmatrix approach to examine the dangers connected with Abuja’s rail mass transit system(ARMT).The questionnaire is designed and delivered to 100 participants,including personnel and passengers,to get their perceptions of hazards at the ARMT.The questionnaire is the initial step in the research process.The four safety variables discussed in this study are human error,equipment design failure,environmental conditions and management.Human error is the most significant factor covered in this research.Understanding the source of risk stemming from these four safety variables at the early stages of rail mass transit operation can significantly improve the system’s overall safety and reliability,which can be paramount.According to the findings of the investigations,human-related activity is the most significant possible cause of risk at that ARMT,with a high level of risk portrayed by the data.展开更多
文摘On the basis of analyzing the history and characteristics of the underground space exploitation and the urban space development in Guangzhou,and making a thorough study on the underground space exploitation based on the subway building,this paper points out some main problems in the exploitation of underground space in Guangzhou,and emphasizes that Guangzhou must develop the underground space on a large scale with the aid of the subway building,and puts forward a proposal on the urban space coordinate development between on-ground and underground in Guangzhou City.
文摘This study facilitates the scalability of as-built data from an earlier street level to underground transportation sites from the life-cycle perspective of urban information maintenance. As-built 3D scans of a 6 km street were made at different time periods, and of 3 underground Mass Rapid Transit (MRT) stations under construction in Taipei. A scanned point cloud was used to create a Building Information Modeling (BIM) Level of Development (LOD) 500 as-built point cloud model, with which topographic utility data were integrated and the model quality was investigated. The complex underground models of the transportation stations are proofed to be in correct relative locations to the street entrances on ground level. In the future the 3D relationship around the station will facilitate new designs or excavations in the neighborhood urban environment.
基金The National Science Foundation of China(Grand No.71971220)the National Science Foundation of Hunan Province,China(Grant No.2019JJ50829).
文摘Due to multiple advantages in terms of capacity,safety,dependability and punctuality,rail mass transit plays a vital role in easing urban traffic congestion.In addition,rail mass transit is environmentally friendly.Even though it is beneficial to passengers in urban areas,security issues have become increasingly serious in recent years.To improve the safety and dependability of the rail mass transit system to some extent and limit the loss to a bare minimum,it is necessary to identify and evaluate the hazards connected with rail mass transit in the early stages of the system’s operation.Against this backdrop,this research employs a riskmatrix approach to examine the dangers connected with Abuja’s rail mass transit system(ARMT).The questionnaire is designed and delivered to 100 participants,including personnel and passengers,to get their perceptions of hazards at the ARMT.The questionnaire is the initial step in the research process.The four safety variables discussed in this study are human error,equipment design failure,environmental conditions and management.Human error is the most significant factor covered in this research.Understanding the source of risk stemming from these four safety variables at the early stages of rail mass transit operation can significantly improve the system’s overall safety and reliability,which can be paramount.According to the findings of the investigations,human-related activity is the most significant possible cause of risk at that ARMT,with a high level of risk portrayed by the data.
