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The Scientific World Journal
Volume 2014 (2014), Article ID 275362, 16 pages
http://dx.doi.org/10.1155/2014/275362
Research Article

Key Techniques and Risk Management for the Application of the Pile-Beam-Arch (PBA) Excavation Method: A Case Study of the Zhongjie Subway Station

1School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
2Shenyang Design and Research Institute of Municipal Engineering, Shenyang 110015, China

Received 22 December 2013; Accepted 16 February 2014; Published 9 April 2014

Academic Editors: B. Kumar and E. Yasar

Copyright © 2014 Yong-ping Guan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The design and construction of shallow-buried tunnels in densely populated urban areas involve many challenges. The ground movements induced by tunneling effects pose potential risks to infrastructure such as surface buildings, pipelines, and roads. In this paper, a case study of the Zhongjie subway station located in Shenyang, China, is examined to investigate the key construction techniques and the influence of the Pile-Beam-Arch (PBA) excavation method on the surrounding environment. This case study discusses the primary risk factors affecting the environmental safety and summarizes the corresponding risk mitigation measures and key techniques for subway station construction using the PBA excavation method in a densely populated urban area.