含倾斜强风化带及局部边坡复杂场地的动力响应及破坏模式研究

doi:10.13722/j.cnki.jrme.2017.0205

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Abstract The article researched the dynamic response of complex site with tilting strongly weathered layer and local slope with a large-scale shaking table model test. The damage progress of the site was studied through the analysis of marginal spectrum，the strain variations of the soil and the displacement of the slope surface. When the El Centro wave is loaded，the amplification coefficients of acceleration at the points in the bedrock and cover layer increase with increasing of elevation. The amplification coefficients of acceleration decrease with the increasing of amplitude(＞0.33 g). The accelerations at the point in the strongly weathered layer decrease sharply and decrease more with the increasing of earthquake amplitude. When the 3 Hz sine waves are loaded，the energy identification of the marginal spectrum implies that the destruction of the site starts from the strongly weathered layer at the corner of local slopes. Then there appears damage in the strongly weathered layer at the bottom of local slopes and the middle of the site. The destruction of the strongly weathered layer at the corner of local slopes connects gradually with the damage at top. The damage progress is verified by the strain changes in the soil and the displacement changes on the slope surface. The failure modes of the site are cracking-shearing-slippage and cracking-shearing-crushing.

Key words： slope engineering complex site tilting strongly weathered layer shaking table test dynamic response marginal spectrum damage identification

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	Articles by authors
	CAO Licong1
	ZHANG Jianjing1
	LIU Feicheng1
	LIU Yang1
	WU Jinbiao1
	WANG Zhijia2

Cite this article:

CAO Licong1,ZHANG Jianjing1,LIU Feicheng1, et al. Dynamic response and failure mode of the complex site with tilting strongly weathered layer and local slopes#br#[J]. , 2017, 36(9): 2238-2250.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.0205 OR http://www.rockmech.org/EN/Y2017/V36/I9/2238

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