Prediction on Ground Surface Settlement Caused by Subway Shield Construction in Xi'an

Abstract:

In order to study the ground surface settlement induced by shield tunneling, on the background of Xi'an metro line 2, this paper made use of the measured ground surface settlement to conduct characteristic parameters fitting of the settlement trough by Peck formula and the modified stiffness approach, proposed the initial suggestive value of the relevant calculation parameters, predicted the ground surface settlement by the formula with the determined parameters and compared the settlement with the actual settlement observation. The results show that the determination of the parameters is basicly right, the revised formula can be used to forecast ground surface settlement of Xi'an subway construction and finally a modified prediction formula is given.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 1534-1538
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.1534
• Online since: August 2013
• Authors: Rong Di Liu, Jian Guo Zheng, Kai Zhang, Zhi Yuan Li
• Keywords: Ground Surface Settlement, Modified Stiffness Approach, Peck Formula, Shield, Subway Construction

References

[1] Peck, R.B. Deep excavations and tunnelling in softgroud. Proc. 7th Int. Conf. SMFE. Mexico City. State of the Art Volume, 225-290. (1969).

[2] O'Reilly, M.P., New, B.M. Settlements above tunnels in the United Kingdom-their magnitude and prediction. Proc. Tunnelling 82, Institution of Mining and Metallurgy, London, 173-181. (1982).

[3] Burland, J.B., Standing, J.R. and Jardine, F.M. Assessing the risk of building due to tunnelling-lessons from the Jubilee Line Extension, London. Geotechnical Engineering: meeting society needs. Proc. of the fourth Southeast Asian geotechnical conf. held Hong Kong. Dec. 2001. (eds: K.K.S. Hoand K.S. Li. ) 17-44. (2001).

[4] Test report of loess test section in Jundu Shan Tunnel[R]. Beijing：China Academy of Railway Science. (1987).

[5] Research report on actual measurement of the tunnel's earth pressure in loess of a project"[R]. Xi, an: Shanxi Research Institute of Building Science. (1980).

[6] Addenbrooke, T.I., Potts D.M., &Puzrin A.M. The influence of pre-failure soil stiffness on the numerical analysis of tunnel construction[J]. Geotechnique, 1997, 47(3): 693-712. (1997).

DOI: 10.1680/geot.1997.47.3.693

[7] Xuan Han. The analysis and prediction of tunnelling-induced building deformations[D]. Xi'an: Xi'an University of Technology. (2006).