地震作用下含倾斜软弱夹层斜坡场地的动力响应特性研究

doi:10.13722/j.cnki.jrme.2017.0440

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Abstract A slope model with inclined soft layers intercalated was generated to simulate a slope site fornuclear waste disposal near to Longmenshan fault zone in northern Sichuan province and the centrifugal shaking table test of 50 g was carried out. The accelerations of the model under different input ground motions triggered by earthquakes were measured. The traditional Fourier spectrum and Hilbert marginal spectrum were utilized to reveal the variation of spectral characteristics of the slope in frequency domain. The experimental results show that the acceleration amplification of the intercalated soft layers was related to the peak input seismic acceleration. The acceleration amplification was weakened under the smaller peak input seismic acceleration，but was strengthened under the larger seismic ground motions. The slope has marked influence on the dynamic responses of the intercalated soft soil layers in this site. The slope caused the acceleration amplification of the intercalated layers to increase. With the increasing of peak input seismic motion，the components of acceleration response at the intercalated soft layers were changed，the higher frequencies decreased but lower components increased.

Key words： slope engineering soft intercalated layer slope site seismic response centrifugal shaking table test time-frequency characteristics

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	Articles by authors
	YAN Kongming1
	2
	LIU Feicheng1
	2
	ZHU Chonghao1
	2
	WANG Zhijia3
	ZHANG Jianjing1
	2

Cite this article:

YAN Kongming1,2,LIU Feicheng1, et al. Dynamic responses of slopes with intercalated soft layers under seismic excitations[J]. , 2017, 36(11): 2686-2698.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.0440 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/I11/2686

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