基于离心试验的强震土体破裂及避让距离研究

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Abstract Under suitable conditions, strong earthquake can cause surface rupture and damage to projects.Avoiding a surface rupture zone caused by seismogenic fault is one of important contents of project site selection.Here, based on the geotechnical centrifugal simulation technology, the process of reverse fault dislocation was successfully simulated in 100g centrifugal field, and surface deformation evolution characteristics of 40 m thick dry sand and wet sand sites during bedrock having different dislocations were obtained.According to test results, the surface deformation process was divided into 4 stages including whole uplift stage, uplift deformation one, scarp translation one and deformation mitigation lag one.Finally, the recommended value of ground surface rupture avoidance distance for strong earthquakes was given.It was shown that the test study and related results here have important theoretical and practical significance for understanding and studying the deformation of soil body caused by dislocation of hidden reverse fault and determining the avoidance distance of surface rupture of seismogenic fault.

Key words： geotechnical centrifuge hidden reverse fault bedrock surface rupture avoidance distance

Received: 02 December 2019 Published: 15 May 2021

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	Articles by authors
	SHEN Chao1
	2
	BO Jingshan1
	2
	ZHANG Xuedong3
	ZHANG Jianyi2
	LIANG Jianhui3
	QI Wenhao1

Cite this article:

SHEN Chao1,2,BO Jingshan1, et al. Soil body rupture and avoidance distance under strong earthquake based on centrifugal tests[J]. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(9): 246-253.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2021/V40/I9/246

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