Effect of Shield Tunneling on the Nearby Pile Foundations

Abstract:

Shield tunneling may have negative influence on the nearby facilities. Especially, it will cause the additional stresses and moments along the pile shaft. If the stresses and deformation of a pile exceed the allowable values, that will affect its normal use and even result in its damage. Therefore, base on a practical engineering in Shanghai, some factors such as the distances between a pile and a tunnel, the concrete strength of a pile are investigated using finite diffrence method. The results show: the degree of disturbing soil in two sides of the tunnel is greater than that of soil in front of the tunnel; shield tunneling has a strong effect on a pile within a distance of 3m between the pile and the shield machine; however, if the distance is in excess of 3m, the effect is not too strong. Furthermore, the grade concrete strength of a pile has little effect on the pile behavior. This conclusion has some reference value to the actual project.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 3559-3563
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.3559
• Online since: May 2011
• Authors: Ya Jun Wu, Dao Min Zou, Gang Li
• Keywords: Concrete Strength, Distance between Pile and Tunnel, Numerical Analysis, Shield Tunneling, Working Behaviour

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