A novel technique for constructing prefabricated subway stations under open excavation with inner support

IF 1.5 4区工程技术 Q3 ENGINEERING, CIVIL

Proceedings of the Institution of Civil Engineers-Engineering Sustainability Pub Date : 2023-10-24 DOI:10.1680/jensu.23.00015

Juyang Wu, Sha Ma, Ran Wang, Feiqi Ou, Yan Liang, Weigang Zhao, Kaize Xie, Shupeng Wang

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引用次数: 0

Abstract

Prefabricated construction is essential for realising green, efficient and sustainable development of rail transit. However, limited space in foundation pits and cross-interference with inner struts mean that the advantages of existing prefabrication technology cannot be leveraged effectively to build subway stations under open excavation with inner support. In this paper, this problem is addressed by introducing a modular design method and two novel connection technologies. The proposed modular design method is sufficiently adaptable to balance the use of space between the station structure and the inner struts. The two proposed connection technologies provide efficient ways to assemble different concrete segments with two newly developed joints, namely a CHC joint and a flexible lock joint, in the circumferential and longitudinal directions, respectively. The first application of this fully prefabricated scheme in the Shenzhen Metro shows the huge potential of this technology for constructing subway stations under open-cut conditions, and its advantages in technical, economic and social aspects reveal wide application prospects in rail transit.

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一种内支护露天开挖装配式地铁车站施工新技术

装配式建筑是实现轨道交通绿色、高效、可持续发展的必然要求。然而，由于基坑空间有限，且与内支撑交叉干扰，现有预制技术的优势无法有效发挥，无法在有内支撑的露天开挖地铁车站中进行施工。本文通过引入模块化设计方法和两种新颖的连接技术来解决这一问题。所提出的模块化设计方法对平衡车站结构与内支板之间的空间使用具有充分的适应性。提出的两种连接技术分别在周向和纵向上采用新开发的两种接缝，即CHC接缝和柔性锁缝，为不同混凝土段的组装提供了有效的方法。该全预制方案在深圳地铁的首次应用表明，该技术在露天条件下建设地铁车站具有巨大的潜力，其在技术、经济和社会方面的优势显示了其在轨道交通中的广泛应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Institution of Civil Engineers-Engineering Sustainability ENGINEERING, CIVIL-ENGINEERING, CIVIL

CiteScore

3.70

自引率

16.70%

发文量

审稿时长

>12 weeks

期刊介绍： Engineering Sustainability provides a forum for sharing the latest thinking from research and practice, and increasingly is presenting the ''how to'' of engineering a resilient future. The journal features refereed papers and shorter articles relating to the pursuit and implementation of sustainability principles through engineering planning, design and application. The tensions between and integration of social, economic and environmental considerations within such schemes are of particular relevance. Methodologies for assessing sustainability, policy issues, education and corporate responsibility will also be included. The aims will be met primarily by providing papers and briefing notes (including case histories and best practice guidance) of use to decision-makers, practitioners, researchers and students.