Stability Analysis of Narrow and Long Excavation in Soft Soil Area

Abstract:

At the present stage of excavation design,the embedded depth of braced structure should meet the requirement of circular sliding stability when the bottom is soft soil. By increasing the embedded depth of support structure, the requirements of stability could be meet. In the normal design, the support structure must penetrate the soft soil layer when the bottom exist soft soil. While when the excavation is narrow and long, because of the obviously spatial effect, there is no need to determine the embedded depth based on the general circular sliding stability. In this paper, based on one the project example, calculate and analyze the similar stability using strength reduction method through the finite element software Plaxis and Midas.

• Periodical: Applied Mechanics and Materials (Volume 723)
• Pages: 372-376
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.723.372
• Online since: January 2015
• Authors: Shi Chong Zhou*, Li Li Gao, Dong Hui Wu, Yang Liu, Dong Yue Wang, Shi Qiang Li
• Keywords: Excavation Width, Numerical Analysis, Stability, Strength Reduction

References

[1] Technical specification of retaining and protecting for building foundation excavation (2007).

[2] Kang Fei, Weijian Zhang: ABAQUS applied in excavation engineering design (China Water Power Press, China 2013).