Unloading Triaxial Experimental Study on Stress Path of Excavated Soil Slope

Abstract:

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The current research was implemented to study the practical unloading stress path that the slope mass experienced during the excavation process, which is very important in the stress and strain numerical analysis. Series of unloading tests were carried out under different confining pressure. During the test process, the minor principal stress was kept decreasing, while the major principal stress was kept unchanged to simulate the stress path in some locations of the soil slope, such as at the top of the slope. The corresponding conventional triaxial compression tests were also carried out as comparison. It is shown that there are many differences between the unloading and loading tests. Through analyzing, the tests results could be applied in the development of unloading constitutive models of excavation soil mass. Also, such unloading tests data are valuable in calibration and verification of the current existing popularly used models.

Info:

Periodical:

Advanced Materials Research (Volumes 243-249)

Edited by:

Chaohe Chen, Yong Huang and Guangfan Li

Pages:

2797-2801

DOI:

10.4028/www.scientific.net/AMR.243-249.2797

Citation:

Y. G. Zhang et al., "Unloading Triaxial Experimental Study on Stress Path of Excavated Soil Slope", Advanced Materials Research, Vols. 243-249, pp. 2797-2801, 2011

Online since:

May 2011

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Price:

$35.00

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