随机地震荷载作用下高速铁路黄土路基震陷试验分析

doi:10.13722/j.cnki.jrme.2014.s2.105

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Abstract In this paper，through the synthetic random seismic wave of seismic risk analysis in different sections of a passenger dedicated line was input dynamic triaxial apparatus，and taken seismic subsidence experiments on undisturbed loess for samples. The seismic subsidence characteristics of the undisturbed loess in different sections of the passenger dedicated line are studied. According to the seismic subsidence test results，prediction method based on loess seismic subsidence test is used to judge whether loess seismic subsidence will occurred on the loess subgrade of passenger dedicated lines in future earthquake. Moreover，the prediction results of 50 years beyond the probability of 10% and 2% are provided respectively. The results show that the loess in HYCD，TGCD and LBCD sites belongs to seismic subsidence loess. The critical dynamic stress for seismic subsidence is about 70 kPa. The reasonable and effective foundation seismic measures should be taken，based on the size of the amount of loess seismic subsidence. While the loess from YSCD site belongs to non-seismic subsidence loess. Loess seismic subsidence in the research area mainly occurred in the Q3 loess when moderate and strong earthquake occurred.

Key words： soil mechanics undisturbed loess seismic subsidence random seismic load dynamic triaxial test evaluation

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	Articles by authors
	WANG Jun1
	2
	3
	WANG Qian1
	2
	3
	WANG Lanmin1
	2
	3
	WANG Ping 1
	2
	3
	CHAI Shaofeng1
	2
	3

Cite this article:

WANG Jun1,2,3, et al. LABORATORY ANALYSIS OF SEISMIC SUBSIDENCE OF LOESS SUBGRADE OF HIGH-SPEED RAILWAY UNDER RANDOM SEISMIC LOADING[J]. , 2014, 33(S2): 4239-4245.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.s2.105 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS2/4239

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