Case Study of Innovative Top-Down Construction Method with Channel-Type Excavation
Publication: Journal of Construction Engineering and Management
Volume 140, Issue 5
Abstract
Although the conventional top-down construction method is widely used in deep excavation, it has the drawback of low efficiency attributable to the long hauling distance and the possibility of the occurrence of excessive excavation deformation and construction risk. This paper introduces a case of deep metro station excavation at West Shanghai Railway Station. The top-down construction method must be used because the excavation is located under a running high-speed railway, and an innovative excavation scheme is proposed to improve construction efficiency and to control excavation deformation. In this method, an operation channel for earth hauling is first excavated in the middle of the excavation. With the available operation channel, the soil on both sides of the channel is excavated simultaneously in a segment pattern, and the required strut systems are subsequently constructed. Both the excavated soil and the construction materials are transported through the channel. This channel-type construction method that resolves the conflict between soil excavation and substructure construction allows for continuous excavation and, thus, reduces construction time and decreases excavation deformation. The case study demonstrates that the presented channel-type excavation is very effective in shortening construction time and reducing both construction cost and excavation deformation.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This research is supported by the National Natural Science Foundation of China (Nos. 41330633, 41372282, 41272317).
References
Brown, D. C. (2003). “Novel method of excavation.” J. Construct. Eng. Manage., 222–225.
Chen, J. J., Zhang, L. Y., Zhang, J. F., Zhu, Y. F., and Wang, J. H. (2013). “Field tests, modification and application of deep soil mixing (DSM) method in soft clay.” J. Geotech. Geoenviron. Eng., 24–34.
Cotton, D. M., and Luark, R. D. (2010). “Recent advances in the top-down construction of a 26.4 meter deep soil nail retention system—Bellevue technology tower.” Proc., 2010 Earth Retention Conf., Vol. 208, ASCE, Reston, VA, 375–381.
Hong, W. K., Kim, J. M., Lee, H. C., Park, S. C., Lee, S. G., and Kim, S. I. (2010). “Modularized top-down construction technique using suspended pour forms (modularized RC system downward, MRSD).” Struct. Des. of Tall Spec. Build., 19(7), 802–822.
Hsieh, H. S., Wang, C. C., and Ou, C. Y. (2003). “Use of jet grouting to limit diaphragm wall displacement of a deep excavation.” J. Geotech. Geoenviron. Eng., 146–157.
Kuta, Y., Maruoka, M., Aoki, M., and Sato, E. (1994). “Application of the observational method to a deep basement excavated using the top-down method.” Geotechnique, 44(4), 655–664.
Lee, H. S., Lee, J. Y., and Lee, J. S. (1999). “Nonshored form work system for top-down construction.” J. Construct. Eng. Manage., 392–399.
Li, J., Chen, J. Y., and Sun, Y. S. (2009). “Application of cyclone in the optimization of top-down earthwork construction machine arrangement.” Proc., Int. Conf. on Management and Service Science, IEEE Computer Society, Piscataway, NJ, 1–4.
Long, M. (2001). “Database for retaining wall and ground movements due to deep excavations.” J. Geotech. Geoenviron. Eng., 203–224.
Ou, C. Y., Liao, J. T., and Lin, H. D. (1998). “Performance of diaphragm wall constructed using top-down method.” J. Geotech. Geoenviron. Eng., 798–808.
Paek, J. H., and Ockz, J. H. (1996). “Innovative building construction technique: Modified up/down method.” J. Construct. Eng. Manage., 141–146.
Tan, Y., and Wei, B. (2012). “Observed behaviors of a long and deep excavation constructed by cut-and-cover technique in shanghai soft clay.” J. Geotech. Geoenviron. Eng., 69–88.
Wang, J. H., Xu, Z. H., Di, G. E., and Wang, W. D. (2006). “Performance of a deep excavation constructed using the united method: Bottom-up method in the main building part and top-down method in the annex building part.” Underground Construction and Ground Movement Proc., GeoShanghai Conf., Vol. 155, ASCE, Reston, VA, 385–392.
Wang, J. H., Xu, Z. H., and Wang, W. D. (2010). “Wall and ground movements due to deep excavations in Shanghai soft soils.” J. Geotech. Geoenviron. Eng., 985–994.
Wong, I. H., and Goh, A. T. C. (2009). “Performance of top-down basement excavation for the Singapore esplanade car park.” Geotech. Eng. J., 40(2), 49–59.
Xu, Z. H. (2007). “Deformation behavior of deep excavations supported by permanent structures in Shanghai soft deposit.” Ph.D. thesis, Shanghai Jiao Tong Univ., Shanghai, China (in Chinese).
Zhou, Z. Q. (2010). “Central part by bottom-up method and peripheral part by step-like top-down method construction craft and key technologies.” Chinese J. Geotech. Eng., 32(2), 455–458 (in Chinese).
Information & Authors
Information
Published In
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Dec 2, 2012
Accepted: Dec 6, 2013
Published online: Feb 3, 2014
Published in print: May 1, 2014
Discussion open until: Jul 3, 2014
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.