INTRODUCTION OF A NEW ELASTO-VISCO-PLASTIC MODEL FOR PREDICTION OF CREEP BEHAVIOR OF SIDES OF CIRCULAR TUNNELS AND COMPARISON WITH THE PREVIOUS PRACTICAL MODELS

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FAHIMIFAR A.; PAKNIYAT E.

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Journal: JOURNAL OF TRANSPORTATION RESEARCH Year:2011 | Volume:8 | Issue:1 (26) Page(s): 91-99

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Title

INTRODUCTION OF A NEW ELASTO-VISCO-PLASTIC MODEL FOR PREDICTION OF CREEP BEHAVIOR OF SIDES OF CIRCULAR TUNNELS AND COMPARISON WITH THE PREVIOUS PRACTICAL MODELS

Author(s)

FAHIMIFAR A. | PAKNIYAT E. | Issue Writer Certificate

Keywords

TIME DEPENDENT MODELQ3

CREEPQ2

FINITE DEFERENCE METHODQ2

TUNNELQ2

Abstract

Inaccurate understand of CREEP behavior of the rocks and application of inappropriate behavior models can lead in uncompensable damages in the TUNNEL analysis and design. Fortunately, study of time-dependent behavior of rocks has been taken into consideration in recent years and even it has been considered in many of the most applicable soft wares such as FLAC. In this paper, the time-dependent behavior models of Maxwell, Kelvin-voit, Burger and CVISC have been presented. Subsequently, these models have been analyzed in the finite difference program of FLAC in a circular TUNNEL model in a hydrostatic condition, thereafter; the analysis results have been compared. Improving these models, a time-dependent model has been proposed and its performance has been verified by comparison with mentioned models. The most important attribute of the proposed model in this paper, is its advantages to take all three stages in rock masses CREEPing into consideration (this phenomenon occurs in high stress zones in deep part of rock masses). Furthermore, this model has the advantage of describing the softening behavior in stress-strain curve based on the reduction in rock mechanical parameters (In confronting to tertiary CREEP).

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APA: Copy

FAHIMIFAR, A., & PAKNIYAT, E.. (2011). INTRODUCTION OF A NEW ELASTO-VISCO-PLASTIC MODEL FOR PREDICTION OF CREEP BEHAVIOR OF SIDES OF CIRCULAR TUNNELS AND COMPARISON WITH THE PREVIOUS PRACTICAL MODELS. JOURNAL OF TRANSPORTATION RESEARCH, 8(1 (26)), 91-99. SID. https://sid.ir/paper/83960/en

Vancouver: Copy

FAHIMIFAR A., PAKNIYAT E.. INTRODUCTION OF A NEW ELASTO-VISCO-PLASTIC MODEL FOR PREDICTION OF CREEP BEHAVIOR OF SIDES OF CIRCULAR TUNNELS AND COMPARISON WITH THE PREVIOUS PRACTICAL MODELS. JOURNAL OF TRANSPORTATION RESEARCH[Internet]. 2011;8(1 (26)):91-99. Available from: https://sid.ir/paper/83960/en

IEEE: Copy

A. FAHIMIFAR, and E. PAKNIYAT, “INTRODUCTION OF A NEW ELASTO-VISCO-PLASTIC MODEL FOR PREDICTION OF CREEP BEHAVIOR OF SIDES OF CIRCULAR TUNNELS AND COMPARISON WITH THE PREVIOUS PRACTICAL MODELS,” JOURNAL OF TRANSPORTATION RESEARCH, vol. 8, no. 1 (26), pp. 91–99, 2011, [Online]. Available: https://sid.ir/paper/83960/en

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