城市轨道交通预留工程设计研究
蔡明1张凯2
Research on Reserved Engineering Design in Urban Rail Transit
CAI Ming1ZHANG Kai2
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作者信息:1.重庆市轨道交通设计研究院有限责任公司， 401122， 重庆
2.重庆工信职业学院轨道交通运输管理学院， 401233， 重庆
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Affiliation:1.Chongqing Rail Transit Design and Research Institute Co., Ltd., 401122, Chongqing, China
2.College of Rail Transit Transportation Management, Chongqing Industry and Information Vocational College, 401233, Chongqing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007－869x.20245801
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中图分类号/CLCN:U231
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栏目/Col:土建工程
摘要:
［目的］在项目前期阶段为后续建设城市轨道交通线路有计划地预留土建、机电及接口等接入条件，已成为城市轨道交通工程建设的新常态，可以有效降低后续工程建设的施工难度及风险，减少工程投资。有必要基于目前的预留工程实践，对涉及城市轨道交通项目的预留工程(以下简称“预留工程”)在设计时出现的问题进行总结。［方法］将预留工程细分为4个类别，分析了各类别预留工程特点及主要子类别。分析了城市发展、上位规划、工程实施条件、工程投资及建设时序4个因素对预留工程的影响。以重庆轨道交通线网建设为研究背景，选取了3个预留工程典型案例，对这3个预留工程的建设经验进行了总结，并提出了优化建议。［结果及结论］预留工程应依据城市轨道交通线网规划，与城市发展相协调，合理确定预留工程的功能；交通枢纽项目的预留工程宜采用包容性设计，并与枢纽片区一体化设计；市政项目的预留工程应保持规划方案的权威性和稳定性，降低预埋工程投资。
Abstracts:
［Objective］ In the early stages of projects, planned reservation of civil works, electromechanical systems, and interface access conditions for urban rail transit line subsequent construction has become a new norm in urban rail transit engineering. This approach can effectively reduce construction difficulties, risks and investment costs in subsequent projects. Therefore, based on current practices in reservation engineering, it is necessary to summarize the issues encountered during the design phase of reservation engineering involved in urban rail transit projects (hereinafter referred to as ′reserved projects′). ［Method］ Reserved projects are categorized into 4 types, with an analysis of the characteristics and main subcategories of each type. The impact of urban development, upper-level planning, project implementation conditions, and project investment/construction sequencing 4 key factors on reserved projects is analyzed. Taking the line network construction of Chongqing Rail Transit as the research background, three typical cases of reserved projects are selected, and the construction experience of these three cases are summarized, and optimization suggestions are put forward. ［Result & Conclusion］ Reserved projects should be aligned with urban rail transit line network planning and coordinated with urban development to reasonably determine the functions of reserved projects. Reserved projects in transport hub projects should adopt inclusive design principles and integrate with the overall design of the hub area. Municipal reserved projects should maintain the authority and stability of planning schemes to reduce investment in reserved projects.
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