Accessible Requires Authentication Published by De Gruyter May 26, 2013

Empirical Correlation for Viscoelastic and Viscoplastic Behaviour of Rock Surfaces under Different Normal Stress Conditions

Empirische Korrelation für das viskoelastische und das viskoplastische Verhalten von Felsoberflächen unter verschiedenen Normalspannungen
Wubin He, Zhian Wu and Zhaoseng Guo
From the journal Materials Testing

Abstract

This paper reports an improved constitutive model for the shear creep behaviour of offwhite marbles which are selected from slope or underground cavern and contain greenschist's weak structural planes. The shear creep behaviour of the samples is characterized by rheological tests. Based on the experimental measurements on mechanical properties under different normal stress conditions, an improved model is proposed to analyze the experimental results. It is demonstrated from a further discussion that such model can reflect the non-linear creep characteristics of structural planes, and especially, it is suitable for description of the viscoelastic and viscoplastic deformation behaviour of structural planes.

Kurzfassung

In dem vorliegenden Beitrag wird über ein verbessertes konstitutives Modell für das Scherkriechverhalten von cremefarbenem Marmor, der von Hängen oder Untergrundaushöhlungen stammen und der schwache Strukturebenen aus Grünschiefer enthalten. Das Scherkriechverhalten der Proben wurde mittels rheologischer Versuche charakterisiert. Basierend auf den experimentellen Messungen der mechanischen Eigenschaften unter verschiedenen Normalspannungsbedingungen wird ein verbessertes Modell vorgeschlagen, um die experimentellen Resultate zu analysieren. Anhand einer früheren Diskussion hat sich gezeigt, dass ein solches Modell die nichtlinearen Kriechcharakteristika von Strukturebenen reflektiert und insbesondere, dass es geeignet ist, um das vsikoelastische und das viskoplastische Verformungsverhalten von Strukturebenen zu beschreiben.


Wubin He, Associated Professor in College of Architecture and Civil Engineering, Taiyuan University of Technology. Assc. Prof. He's research interest is in Soil Mechanics and Geotechnical Engineering. He has published a few papers in this field.

Zhian Wu, a senior engineer in Shanxi Key Laboratory of Structure Engineering, College of Architecture and Civil Engineering, Taiyuan University of Technology. Wu's research interest is Structural Mechanics and Structure Engineering.

Zhaosheng Guo, Ph.D. candidate in College of Architecture and Civil Engineering, Taiyuan University of Technology. Guo's research interest is in Geotechnical Engineering and Structure Engineering.


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Published Online: 2013-05-26
Published in Print: 2013-02-01

© 2013, Carl Hanser Verlag, München