地铁盾构隧道新型预埋套筒技术研究与应用
傅俊武1郭亮2秦建设1
Research and Application of New Embedded Sleeve Technology for Metro Shield Tunnels
FU Junwu1GUO Liang2QIN Jianshe1
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作者信息:1.杭州市地铁集团有限责任公司，310003，杭州
2.中铁第一勘察设计院集团有限公司，710043，西安
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Affiliation:1.Hangzhou Metro Group Co.， Ltd.， 310003， Hangzhou， China
2.China Railway First Survey and Design Institute Group Co.， Ltd.， 710043， Xi′an， China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.20252168
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中图分类号/CLCN:U255
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栏目/Col:土建工程
摘要:
［目的］ 地铁隧道内设备及管线支架以往多采用后置锚栓方式固定，存在损伤结构、工效低、环境差等诸多问题。盾构管片预留预埋是替代传统后锚固（锚栓）且更为绿色、先进的建造技术，故对其力学及防腐性能等技术要求进行研究很有必要。 ［方法］ 提出一种新型盾构隧道管片酒杯状预埋套筒方案，通过典型工况下预埋套筒及槽道的受力分析、现场安装试验及成品检测和实验室试验，论证该方案安全性和可靠性，并确定盾构隧道管片新型预埋套筒及外挂槽道截面型式、材质、连接方式、力学性能、耐久性能等设计参数和技术要求。 ［结果及结论］ 所提新型预埋套筒方案有效降低工程投资，提升现场可实施性及可更换性；提高设备与管线安装效率，对盾构管片结构可实现零损伤，从而延长盾构隧道工程使用寿命。
Abstracts:
［Objective］ In metro tunnels， equipment and pipeline supports are traditionally fixed using post-installed anchor bolts， which present multiple issues such as structural damage， low work efficiency， and poor working environment. The segment-embedded reservation technology for shield tunnels is a greener and more advanced construction method in replacing the conventional post-installed anchoring （anchor bolt） approach. It is therefore necessary to study its technical requirements， including mechanical performance and corrosion resistance. ［Method］ A new goblet-shaped embedded sleeve scheme for shield tunnel segments is proposed. Through a mechanical analysis of embedded sleeves and grooves under typical working conditions， on-site installation tests， finished product inspections， and laboratory tests， the scheme is verified to be safe and reliable. The design parameters and technical requirements for the new embedded sleeve and external groove of shield tunnel segments are determined， including cross-sectional profile， material， connection method， mechanical performance， and durability performance. ［Result Conclusion］ The proposed new embedded sleeve scheme reduces project investment， improves on-site feasibility and replaceability， enhances equipment and pipeline installation efficiency， achieving zero damage to shield segment structure and service life extension for shield tunnel projects.
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