The Viscoelastic-Plastic Displacement Back Analysis of Rock Mass with Non-Stationary Parameters

Quan Sheng Liu; Jin Lan Li

doi:10.4028/www.scientific.net/AMR.455-456.1538

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 455-456The Viscoelastic-Plastic Displacement Back...

The Viscoelastic-Plastic Displacement Back Analysis of Rock Mass with Non-Stationary Parameters

Abstract:

The FEM positive analysis is made using H-K non-stationary creep constitutive model in this paper, the finite element program for non-stationary viscoelastic-plastic displacement back analysis is compiled combining the non-stationary viscoelastic-plastic program with the complex shape optimization method, and the displacement back analysis of soft tunnel engineering is conducted. The result indicates that the viscous aging characteristics of rock mass can be reflected objectively if rock mass is regarded as non-stationary viscoelastic-plastic model, and the plastic zone development of surrounding rock can be predicted considering the plastic flow of rock mass and regarding the back analysis results as the calculation parameters.

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Periodical:

Advanced Materials Research (Volumes 455-456)

Pages:

1538-1544

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.455-456.1538

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Online since:

January 2012

Authors:

Quan Sheng Liu, Jin Lan Li

Keywords:

Displacement Back Analysis, Finite Element, Non-Stationary Parameters, Rheologic, Viscoelastic-Plastic

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