城区大跨度地铁车站新型暗挖工法探索与实践
王祥1王春凯2
Exploration and Practice of New Underground Excavation Method for Large Span Metro Station in Urban Area
WANG Xiang1WANG Chunkai2
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作者信息:1.贵阳市公共交通投资运营集团有限公司， 550081， 贵阳
2.上海市城市建设设计研究总院(集团)有限公司， 200125， 上海
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Affiliation:1.Guiyang Public Transport Investment and Operation Group Co., Ltd., 550081, Guiyang, China
2.Shanghai Urban Construction Design and Research Institute (Group) Co., Ltd., 200125, 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.20230699
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中图分类号/CLCN:U231.4
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栏目/Col:土建工程
摘要:
［目的］为进一步提高施工机械化率，并因地制宜地建立与环境条件相适应、与大型机械相配套的新型暗挖工法，以满足城市轨道交通建设的复杂需求，特对城区大跨度地铁车站新型暗挖工法进行研究。［方法］在分析城市地形地貌特征及城区地铁建设面临的难点基础上，结合贵阳地铁暗挖工程的实际经验，对传统暗挖工法（如拱盖法、双侧壁导坑法、中洞法等）进行了深入剖析。依托贵阳市轨道交通3号线北京路站工程项目，创新性地提出了与环境要求高度匹配的“拱柱法”新型暗挖工法。［结果及结论］通过研究探索与工程实践应用，从设计理念、施工工序、关键技术控制等多个方面对拱柱法进行了全面细致的论述。实践结果表明，拱柱法相较于传统工法，具有工期短、对周边环境扰动小、工程造价低等优势，推动了大跨度地铁车站暗挖工法的创新发展。
Abstracts:
［Objective］ To further enhance the mechanization rate of construction and establish a new underground excavation method compatible with local environmental conditions and large-scale machinery, tailored to meet the complex requirements of urban rail transit construction, the underground excavation method for large-span metro station in urban area is studied. ［Method］ Based on an analysis of urban topographical and geomorphological characteristics and the challenges faced in construction within urban areas, combined with practical experiences from underground excavation projects in Guiyang Metro, conventional underground excavation methods (such as arch cover method, double-side wall heading method, and central drift method) are thoroughly examined. Relying on the Beijing Road Station project of Guiyang Rail Transit Line 3, the ′arch-pillar method′-an innovative new underground excavation method that is highly compatible with environmental requirements is proposed. ［Result & Conclusion］ Through research, exploration and engineering practice applications, the arch-pillar method is comprehensively and meticulously discussed in terms of design concepts, construction procedures, and key technical controls. Practical results demonstrate that compared to traditional methods, this method offers advantages such as shorter construction duration, minimal disturbance to the surrounding environment, and lower engineering costs, propelling the innovative development of large-span metro station underground excavation method.
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