Influence of principal stress rotation of unequal tensile and compressive stress amplitudes on characteristics of soft clay

doi:10.1007/s11629-016-4000-9

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2017 > Vol14 No.2

	Influence of principal stress rotation of unequal tensile and compressive stress amplitudes on characteristics of soft clay
	SHEN Yang; WANG Xin; LIU Han-long; DU Wen-han; WANG Bao-guang; XU Hai-dong
刊名	Journal of Mountain Science
	2017-02
卷号	14 期号:2 页码:369-381
关键词	Complex Stress Path Principal Stress Rotation Train Loads Amplitude Ratio Cyclic Dynamic Stress Ratio Failure Criterion
ISSN号	1672-6316
DOI	10.1007/s11629-016-4000-9
通讯作者	SHEN Yang
文献子类	期刊论文
英文摘要	Soil behavior can reflect the characteristics of principal stress rotation under dynamic wave and traffic loads. Unequal amplitudes of tensile and compressive stresses applied to soils have complex effects on foundation soils in comparison with the pure principal stress rotation path. A series of undrained cyclic hollow torsional shear tests were performed on typical remolded soft clay from the Hexi area of Nanjing, China. The main control parameters werethe tensile and compressive stress amplitude ratio(α) and the cyclic dynamic stress ratio (η). It was found that the critical η tended to remain constant at 0.13, when the value of the compressive stress amplitude was higher than the tensile stress amplitude. However, the influence of the tensile stress was limited by the dynamic stress level whenα= 1. For obvious structural change in the soil, the corresponding numbers of cyclic vibration cycles were found to be independent ofαat low stress levels and were only related to η. Finally, a new method for evaluating the failure of remolded soft clay was presented. It considers the influence of the tensile and compressive stresses which caused by complex stress paths of the principal stress rotation. This criterion can distinguish stable, critical, and destructive states based on the pore-water-pressure-strain coupling curve while also providing a range of failure strain and vibration cycles. These resultsprovide thetheoretical support for systematic studies of principal stress rotation using constitutive models.
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/18425]
专题	Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.2
推荐引用方式 GB/T 7714	SHEN Yang,WANG Xin,LIU Han-long,et al. Influence of principal stress rotation of unequal tensile and compressive stress amplitudes on characteristics of soft clay[J]. Journal of Mountain Science,2017,14(2):369-381.
APA	SHEN Yang,WANG Xin,LIU Han-long,DU Wen-han,WANG Bao-guang,&XU Hai-dong.(2017).Influence of principal stress rotation of unequal tensile and compressive stress amplitudes on characteristics of soft clay.Journal of Mountain Science,14(2),369-381.
MLA	SHEN Yang,et al."Influence of principal stress rotation of unequal tensile and compressive stress amplitudes on characteristics of soft clay".Journal of Mountain Science 14.2(2017):369-381.