Stability and Safety Analysis of Braced Excavation for Subway Station during Construction under the Condition of Side Slope


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The main purpose of this paper is to analyze the stability and safety problems of braced excavation enclosure, surrounding strata and side slope during construction of Shangshuijing station in Shenzhen Metro Line 5. The paper presents stability discrimination of the braced excavation and side slope by discussing their force and deformation regularity using Flac3D, and puts forward some project proposals about its design and construction. The results show that: (1) The stability coefficient of braced excavation enclosure becomes smaller because of biasing impact of side slope, but this project can meet the stability requirements, (2) The biasing impact of side slope has little influence on deformation of surrounding strata starting on the other side of braced excavation without slope, and (3) To ensure construction safety under condition of side slope, the braced excavation should be excavated starting from the zone far from the side slope, steel pipe can be used as assistant reinforcement at the corner of side slope if necessary.



Edited by:

Xuejun Zhou






Y. H. Li et al., "Stability and Safety Analysis of Braced Excavation for Subway Station during Construction under the Condition of Side Slope", Applied Mechanics and Materials, Vols. 99-100, pp. 1166-1170, 2011

Online since:

September 2011




[1] Jie Zhao, Longtan Shao: Finite-element Stability Analysis of Side Slope with Nailing Support of The Foundation. (Geomechanics, 6: 1654–1658, 2008). (in Chinese).

[2] Qiang Luo, Peng Li and Zuliang Zhong: Research on Stability Problem of Sandstone Slope of Foundation in Chongqing. (Journal of Underground Space and Engineering, 4: 307–311, 2009). (in Chinese).

[3] Yajun Wu: Numerical Analysis of Slope Stability and Interactions between Soil and Supporting Structure. (Dalian University of Technology, 2003). (in Chinese).

[4] Hui Zhong, Yaping Jing and Yonglin Tian: The Supporting of Applied Rock Slope in Deep Foundation. (Architecture Science, 12: 73–76, 2005). (in Chinese).

[5] Y.M. Hou, J. H. Wang, L.L. Zhang: Finite-element modeling of a complex deep excavation in Shanghai. (Acta Geotechnica, 4: 7–16, 2009).

[6] Assinder. P, Huqhes. J, Symonds. J: The cause, analysis and remediation of a slope failure at Highley, Severn Valley Railway, Worcestershire, U.K. (4th European Geosynthetics Conference, 2008).

[7] Zhibing Xu: Research on Foundation Deformation under Asymmetric load. (NanJing: DongNan University, 2005). (in Chinese).

[8] Wenpeng Tang: Design of Foundation under Asymmetric Bias. (HuNan Traffic Technology, 6: 136-139, 2008). (in Chinese).

[9] Miao Nie: Numerical Simulation of Deep Foundation Excavation and Supporting Measures. (GuiZhou: GuiZhou University, 2009). (in Chinese).

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