地震和降雨耦合作用下黄土边坡失稳滑移的振动台试验研究

doi:10.13722/j.cnki.jrme.2017.0251

Abstract
Figure/Table
References (14)
Related Citation (15)

Download: PDF (907 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract

To explore dynamic response features，deformation evolution process and failure mechanism of loess slope under the coupled effect of earthquake and rainfall，two model tests of loess slope with 100 mm rainfall and natural state were carried out to compare and analyze change features of macroscopical deformation and related physical quantities such as acceleration，pore pressure and soil pressure，etc. The results indicate that natural vibration frequency in loess slope model after rainfall is reduced as well as damping ratio is increased and amplification effects of seismic oscillation are enhanced. Under effect of strong shock，the soil in the top of the slope are seismically settled and liquified and liquified soil would slip along the slope under follow-up seismic oscillation. In line with changes in macroscopical deformation，pore pressure and soil pressure in the slope model，the failure process can be divided into four phases，namely elastic deformation phase，rapid increase phase of residual deformation，liquification slipping phase and creeping phase. Macroscopical deformation，pore pressure and soil pressure of the soil in different phases are with their own characteristics.

Key words： slope engineering coupling dynamic response instability mechanism shaking table model test similarity ratio

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	王兰民1
	2
	蒲小武1
	吴志坚1
	2
	孙军杰1
	2
	王平1
	2
	柴少峰1
	2
	徐舜华1
	2
	邓津1
	2

Cite this article:

王兰民1,2,蒲小武1, et al. The shaking table test of the instability sliding of loess slope under the coupling effects of earthquake and rainfall[J]. , 2017, 36(S2): 3873-3883.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.0251 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/IS2/3873

[1]	王兰民.黄土动力学[M]. 第一版，北京：地震出版社，2003：1-7.(WANG Lanmin. Loess dynamics[M]. 1st ed. Beijing：Earthquake Press，2003：1-7.(in Chinese))
[2]	孙军杰，王兰民，龙鹏伟，等. 与降雨耦合作用下区域滑坡灾害评价方法[J]. 岩石力学与工程学报，2011，30(4)：752-760.(SUN Junjie，WANG Lanmin，LONG Pengwei，et al. Method for evaluation of regional landslide disaster，coupled with earthquake and rainfall[J]. Journal of Rock Mechanics and Engineering，2011，30(4)：752-760.(in Chinese))
[3]	徐舜华，吴志坚，孙军杰，等. 县漳县6.6级地震典型滑坡特征及其诱发机制[J]. 地震工程学报，2013，35(3)：471-476.(XU Shunhua，WU Zhijian，SUN Junjie，et al. Typical landslide characteristics and induced mechanism of the Ms6.6 earthquake in Zhang County，Minxian County[J]. Earthquake Engineering，2013，35(3)：471-476.(in Chinese))
[4]	HEUZE F，FRANEOIS E，GOODMAN R. Finite element and physical model studies of tunnel reinforcement in rock[C]// U.S. Symposium on Rock Mechanics. [S. l.]：[s. n.]，1975：975-991.
[5]	SNITHHAN N，CHEN W F. Finite element analysis of large deformations in slopes[C]// Proceedings of the Conference in Numerical Method In Geotech.. [S. l.]：[s. n.]，1997：744-756.
[6]	KATZ O，AHARONOV E. Landslides in vibrating sand box：what controls types of slope failure and frequency magnitude relations[J]. Earth and Planetary Science Letters，2006，247(3)：280-294.
[7]	LIN M L，WANG K L. Seismic slope behavior in a large scale shaking table model test[J]. Engineering Geology，2006，86(2)：118-133.
[8]	林皋，朱彤，林蓓. 结构动力模型试验的相似技巧[J]. 大连理工大学学报，2000，(1)：1-8.( LIN Gao，ZHU Tong，LIN Bei. Similar techniques for structural dynamic model test[J]. Journal of Dalian University of Technology，2000，(1)：1-8.(in Chinese))
[9]	邵生俊，周飞飞，龙吉勇. 原状黄土结构性及其定量化参数研究[J]. 岩土工程学报，2004，26(4)：531-536.(SHAO Shengjun，ZHOU Feifei，LONG Jiyong. Structural and quantitative parameters of undisturbed loess[J]. Chinese Journal of Geotechnical Engineering，2004，26(4)：531-536.(in Chinese))
[10]	蒋良潍，姚令侃，吴伟，等. 传递函数分析在边坡振动台模型试验的应用探讨[J]. 岩土力学，2010，31(5)：1 368-1 374.(JIANG Liangwei，YAO Lingkan，WU Wei，et al. Application of transfer function analysis on slope shaking table model test[J]. Rock and Soil Mechanics，2010，31(5)：1 368-1 374.(in Chinese))
[11]	吴志坚，王兰民，陈拓，等. 汶川地震远场黄土场地地震动场地放大效应机制研究[J]. 岩土力学，2012，33(12)：3 736-3 740.(WU Zhijian，WANG Lanmin，CHEN Tuo，et al. Study on the magnifying mechanism of earthquake ground in the far field loess site of wenchuan earthquake[J]. Rock and Soil Mechanics，2012，33(12)：3 736-3 740.(in Chinese))
[12]	栾茂田，李顺群，杨庆. 非饱和土的基质吸力和张力吸力[J]. 岩土工程学报，2006，28(7)：863-868.(LUAN Maotian，LI Shunqun，YANG Qing. Study on matrix suction and tension suction of unsaturated soils[J]. Chinese Journal of Geotechnical Engineering，2006，28(7)：863-868.(in Chinese))
[13]	谢定义，冯志焱. 对非饱和土有效应力研究中若干基本观点的思辨[J]. 岩土工程学报，2006，28(2)：170-173.(XIE Dingyi，FENG Zhiyan. Some basic ideas on the study of effective stress in unsaturated soils[J]. Chinese Journal of Geotechnical Engineering，2006，28(2)：170-173.(in Chinese))
[14]	蒋良潍，姚令侃，王建. 基于振动性态和破坏相似的边坡振动台模型实验相似律[J]. 交通科学与工程，2009，25(2)：1-7.(JIANG Liangwei，YAO Lingkan，WANG Jian. Experimental similarity of slope shaking table model based on vibration behavior and damage similarity[J]. Journal of Transportation Science and Engineering，2009，25(2)：1-7.(in Chinese))