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Rigid Blocks Failure Mechanism for Stability of Shallow Tunnel Using Upper Bound Solution

Yang, F. / Yang, J. S.

A rigid block failure mechanism of shallow rectangular tunnel is proposed to calculate the needed support pressure σ_T for tunnel stability using upper bound solution. The velocity discontinuities in the side wall of the shallow rectangular tunnel of the failure mechanism occur in both radial and tangent directions. Formula for calculating support pressure σ_T using upper bound solution are deduced based on the presented failure mechanism, and the calculation program is compiled. It is shown that the proposed rigid block failure mechanism can be used effectively to analyze the stability problems of shallow rectangular tunnel using upper bound solution.

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Rigid Blocks Failure Mechanism for Stability of Shallow Tunnel Using Upper Bound Solution

Yang, F. / Yang, J. S.

A rigid block failure mechanism of shallow rectangular tunnel is proposed to calculate the needed support pressure σ_T for tunnel stability using upper bound solution. The velocity discontinuities in the side wall of the shallow rectangular tunnel of the failure mechanism occur in both radial and tangent directions. Formula for calculating support pressure σ_T using upper bound solution are deduced based on the presented failure mechanism, and the calculation program is compiled. It is shown that the proposed rigid block failure mechanism can be used effectively to analyze the stability problems of shallow rectangular tunnel using upper bound solution.

Rigid Blocks Failure Mechanism for Stability of Shallow Tunnel Using Upper Bound Solution

Yang, F. / Yang, J. S.

A rigid block failure mechanism of shallow rectangular tunnel is proposed to calculate the needed support pressure σ_T for tunnel stability using upper bound solution. The velocity discontinuities in the side wall of the shallow rectangular tunnel of the failure mechanism occur in both radial and tangent directions. Formula for calculating support pressure σ_T using upper bound solution are deduced based on the presented failure mechanism, and the calculation program is compiled. It is shown that the proposed rigid block failure mechanism can be used effectively to analyze the stability problems of shallow rectangular tunnel using upper bound solution.

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Title:

Rigid Blocks Failure Mechanism for Stability of Shallow Tunnel Using Upper Bound Solution

Contributors:

Yang, F. (author) / Yang, J. S. (author)

Conference:

GeoHunan International Conference 2009 ; 2009 ; Changsha, Hunan, China

Published in:

Recent Advancement in Soil Behavior, in Situ Test Methods, Pile Foundations, and Tunneling ; 249-255

Publication date:

2009-07-13

ISBN:

DOI:

https://doi.org/10.1061/41044(351)39

Type of media:

Conference paper

Type of material:

Electronic Resource

Language:

English

Keywords:

Failures , Pile foundations , Soil mechanics , Excavation , Models , In situ tests , Tunnels

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