预留上盖物业开发条件的市域铁路地下车辆基地结构设计
谭奇峰
Structural Design of City Railway Underground Depot with Reserved Conditions for Overlying Property Development
TAN Qifeng
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作者信息:中铁上海设计院集团有限公司, 200070, 上海
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Affiliation:China Railway Shanghai Design Institute Group Co., Ltd., 200070, Shanghai，China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.01.013
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中图分类号/CLCN:U279.1∶U239.5
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栏目/Col:研究报告
摘要:
［目的］为进一步提高土地利用率，减少城市空间分割，提升区域城市形象，避免区域交通立体化以及对人行系统的影响，需对预留上盖物业开发条件的市域铁路地下车辆基地结构设计的关键技术进行研究。［方法］以上海市域铁路机场联络线申昆路停车场项目为例，基于预留上盖物业开发条件的地下车辆基地与地面车辆基地在结构设计方面的差异，研究了预留上盖物业开发条件的地下车辆基地结构的设计难点，并针对性分析了地下车辆基地施工过程中的超长结构温度裂缝、结构防水、不连续施工结构等的关键技术。［结果及结论］根据不设缝的超长盖板温度应力结果相应配置抗裂钢筋，从理论上限制了混凝土裂缝，避免自防水混凝土开裂漏水；针对由施工质量、养护、合拢等条件与设计差异导致可能漏水的情况，设计方从构造方面提出侧壁和底板的防漏水备用解决方案；地下车辆基地结构与上盖物业开发结构不同步实施时，提出临时抗浮措施与盖板施工荷载预留相结合的最优方案。
Abstracts:
［Objective］ To further improve land use efficiency, reduce the fragmentation of urban space, enhance the regional urban image, and avoid the impact of regional transportation three-dimensional development and pedestrian system, it is necessary to conduct research on the key technologies for city railway underground depot structural design with reserved conditions for the overlying property development. ［Method］ In a case study of Shenkun Road Parking Lot Project of Shanghai City Railway Airport Link Line, based on the differences in structural design between the underground vehicle depot with reserved conditions for the overlying property development and the ground vehicle depot, the structural design challenges of the above-mentioned underground vehicle depot are studied, and the key technologies, such as the temperature cracks of super-long structures, structural waterproofing, and discontinuous construction structures in the construction process of the underground vehicle depot, are specifically analyzed. ［Result & Conclusion］ The anti-cracking reinforcing bars are configured according to the temperature stress results of the super-long cover plate without joints, theoretically restricting the concrete cracks and avoiding cracking and water leakage of the self-waterproof concrete. Alternative waterproofing solutions for the side walls and bottom plates from the structural aspect are proposed by the designer, against the possible water leakage caused by the construction quality, maintenance, closure conditions and the design differences. The optimal solution combining temporary anti-floating measures and the reservation of the construction load in the cover plate is proposed for the asynchronous construction of the underground vehicle depot structure and the overlying property development structure.
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