SENSITIVITY ANALYSIS OF DESIGN PARAMETERS OF COMPOSITE SOIL NAILED WALL WITH BORED PILES IN DEEP EXCAVATION

Zhu Fengbin; Miao Linchang; Gu Huanda; Lin Shuixian

doi:10.13204/j.gyjz201311018

Volume 43 Issue 11

Dec. 2014

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Zhu Fengbin, Miao Linchang, Gu Huanda, Lin Shuixian. SENSITIVITY ANALYSIS OF DESIGN PARAMETERS OF COMPOSITE SOIL NAILED WALL WITH BORED PILES IN DEEP EXCAVATION[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(11): 77-83. doi: 10.13204/j.gyjz201311018

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SENSITIVITY ANALYSIS OF DESIGN PARAMETERS OF COMPOSITE SOIL NAILED WALL WITH BORED PILES IN DEEP EXCAVATION

doi: 10.13204/j.gyjz201311018

1.
1. Institute of Geotechnical Engineering,Southeast University,Nanjing 210096,China;
2.
2. Construction Engineering Quality Supervision Station,Xiangcheng District,Suzhou,215131,China;
3.
3. School of Civil Engineering,Suzhou University of Science and Technology,Suzhou,215011,China;
4.
4. The Management Committee of Suzhou High-Speed Ｒailway New Town,Suzhou 215131,China

Received Date: 2011-12-01
Publish Date: 2013-11-20

Abstract

Abstract

According to the site working conditions,the 3D full-scale non-linear finite element methods were used to simulate the deep excavation supported by a composite soil nailed wall with bored piles in soft soil. The modified Cam-clay model was applied as the soil's constitutive relationship during the simulation. The results showed that the retaining effects of bored piles and the anchorage effects of anchors were quite good when they were added in the composite soil nailed wall. In order to bring the bored piles and anchors into full play and decrease the adverse effects on the behaviors of the composite soil nailed wall due to deep excavation,it was suggested that the bored pile spacing and embedded depth should be set from 2 m to 2. 5 m and the embedded depth should be no more than the excavation depth,while the anchor inclination should be controlled within 20. The numerical results agreed well with the field data.
- composite soil nailed wall,
- bored pile,
- anchor,
- 3D non-linear finite element,
- retaining effects,
- anchorage effects

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References(12)

References

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