face stability analysis of shield tunnels in homogeneous soil overlaid by multilayered cohesive-frictional soils
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ID: 135149
2016
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Abstract
In order to better interpret failure features of the failure of soil in front of tunnel face, a new three-dimensional failure mechanism is proposed to analyze the limit support pressure of the tunnel face in multilayered cohesive-frictional soils. The new failure mechanism is composed of two truncated cones that represent the shear failure band and a distributed force acting on the truncated cones that represents the pressure arch effect. By introducing the concept of Terzaghi earth pressure theory, approximation of limit support pressures is calculated using the limit analysis methods. Then the limit support pressures obtained from the new failure mechanism and the existing approaches are compared, which show that the results obtained from the new mechanism in this paper provide relatively satisfactory results.
| Reference Key |
han2016mathematicalface
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|---|---|
| Authors | ;Kaihang Han;Chengping Zhang;Wei Li;Caixia Guo |
| Journal | journal of power sources |
| Year | 2016 |
| DOI |
10.1155/2016/1378274
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| URL | |
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