Journal Published Online: 19 January 2015
Volume 38, Issue 2

Investigation of the Shear Stress Relaxation Characteristics of a Structural Plane Using the Isostress Cyclic Loading Method

CODEN: GTJODJ

Abstract

In this study, the isostress cyclic loading method (ICLM) was proposed to study the shear stress relaxation characteristics of rock with a structural plane and the connection between the stress relaxation and long-term strength. Samples with artificial joint surfaces based on the 4th, 6th, and 10th discontinuity lines from Barton’s ten standard lines were poured using cement mortar. Shear stress relaxation tests were conducted with a biaxial rheological testing machine using the ICLM under various stress levels, where the shearing loading value was larger than the long-term strength. The law of shear stress relaxation was studied based on the test results. The interaction mechanism between stress relaxation and creep was discussed, and a stress relaxation method was proposed to determine the long-term strength that achieved the optimal results. This study could provide a reference for engineering practices and preparation for constitutive studies.

Author Information

Ang, Liu
Department of Geotechnical Engineering, Tongji Univ., Shanghai, CN Department of Civil and Environmental Engineering, The Univ. of Tokushima, Tokushima, Tokushima Prefecture, JP
Mingrong, Shen
Department of Geotechnical Engineering, Tongji Univ., Shanghai, CN
Jingcai, Jiang
Department of Civil and Environmental Engineering, The Univ. of Tokushima, Tokushima, Tokushima Prefecture, JP
Pages: 10
Price: $25.00
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Details
Stock #: GTJ20140049
ISSN: 0149-6115
DOI: 10.1520/GTJ20140049