基于局部应力变形测试方法的土–结构物渐进破坏试验研究

doi:10.13722/j.cnki.jrme.2017.0781

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Abstract In order to research the mechanism of and influencing factors in progressive failure of contact surfaces of soil-structure，a new stress-displacement sensor was developed and large direct shear tests on the contact surface between red clay and structure were performed. The stress and deformation of the contact surface between red clay and structure under shear were analyzed and the progressive failure mechanism of the contact surface was investigated. The test results indicate that the peak shear stress and displacement of the contact surface occur successively along the shear direction and that the contact surface fails progressively. It was also found that the normal stress on the contact surface and the compaction degree of the soil influence significantly the progressive failure. The time difference to reach the peak shear stress at measuring points along the shear direction increases with the rising of the normal stress on the contact surface，but decreases sharply with the ascending of the compaction degree of the soil. The contact surface presents more remarkable progressive failure behavior with a lower compaction degree.

Key words： soil mechanics soil-structure interface progressive failure stress-displacement direct shear test

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	Articles by authors
	GAN Fei1
	2
	YE Xiaoming1
	2
	YIN Ke1
	2
	LI Meilin3
	YANG Jun4
	XIAO Yang1
	2

Cite this article:

GAN Fei1,2,YE Xiaoming1, et al. Experimental study on progressive failure of soil-structure interfaces based on a new measuring method of local stress and displacement[J]. , 2018, 37(3): 734-742.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.0781 OR http://www.rockmech.org/EN/Y2018/V37/I3/734

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