Block Limit Analysis Method for Stability of Slopes During Earthquakes

doi:10.1007/s12204-018-1997-7

Journal of Shanghai Jiao Tong University (Science) ›› 2018, Vol. 23 ›› Issue (6): 764-769.doi: 10.1007/s12204-018-1997-7

Block Limit Analysis Method for Stability of Slopes During Earthquakes

YIN Xiaojun (尹小军), WANG Lanmin (王兰民)

(1. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China; 2. Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration, Harbin 150080; 3. College of Mining Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China; 4. Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China)

出版日期:2018-12-01 发布日期:2018-12-07
通讯作者: YIN Xiaojun (尹小军) E-mail:yinxiaojun800@126.com

Block Limit Analysis Method for Stability of Slopes During Earthquakes

YIN Xiaojun (尹小军), WANG Lanmin (王兰民)

(1. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China; 2. Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration, Harbin 150080; 3. College of Mining Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China; 4. Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China)

Online:2018-12-01 Published:2018-12-07
Contact: YIN Xiaojun (尹小军) E-mail:yinxiaojun800@126.com

摘要/Abstract

摘要： Based on the limit analysis upper bound method, a new mechanism of soil slope failure has been proposed which was consisted of plastic shear zone and rigid block zone. The different zones interface were regarded as discontinuity lines. Two sliding blocks of the slope were also incorporated horizontal seismic force and vertical gravity force. The velocities and forces were analyzed in two blocks, and the expression of velocity discontinuities was derived according to the principle of incompressibility. The external force done work for the blocks and the internal energy dissipated of the plastic shear zone and the velocity discontinuous were solved. The stability ratios were derived for the height of two-level slope with different rates to involve seismic and no seismic. The present stability ratios were compared to the previous study, which showed the superiority of the mechanism and the rationality of the analysis. The critical height of the slope can provide a theoretical basis for slope support and design.

关键词: soil slope , stability ratio , earthquake , block limit analysis method

Abstract: Based on the limit analysis upper bound method, a new mechanism of soil slope failure has been proposed which was consisted of plastic shear zone and rigid block zone. The different zones interface were regarded as discontinuity lines. Two sliding blocks of the slope were also incorporated horizontal seismic force and vertical gravity force. The velocities and forces were analyzed in two blocks, and the expression of velocity discontinuities was derived according to the principle of incompressibility. The external force done work for the blocks and the internal energy dissipated of the plastic shear zone and the velocity discontinuous were solved. The stability ratios were derived for the height of two-level slope with different rates to involve seismic and no seismic. The present stability ratios were compared to the previous study, which showed the superiority of the mechanism and the rationality of the analysis. The critical height of the slope can provide a theoretical basis for slope support and design.

Key words: soil slope , stability ratio , earthquake , block limit analysis method

中图分类号:

YIN Xiaojun (尹小军), WANG Lanmin (王兰民). Block Limit Analysis Method for Stability of Slopes During Earthquakes[J]. Journal of Shanghai Jiao Tong University (Science), 2018, 23(6): 764-769.

参考文献 18

[1]	JIBSON R W. Methods for assessing the stability ofslopes during earthquakes—A retrospective [J]. EngineeringGeoglogy, 2011, 122, 43-50.
[2]	TERZAGHI K. Mechanism of landslides [M]//PAIGES. Application of Geology to Engineering Practice,Berkly Volume. New York, USA: Geological Societyof America Press, 1950: 83-123.
[3]	NEWMARK N M. Effects of earthquakes on dams andembankments [J]. G′eotechnique, 1965, 15(2): 139-160.
[4]	SARMA S K. Stability analysis of embankments andslopes [J]. G′eotechnique, 1973, 23(3): 423-433.
[5]	SARMA S K. Stability analysis of embankments andslopes [J]. Journal of the Geotechnical Engineering Division,1979, 105(12): 1511-1524.
[6]	STAMATOPOULOS C A. Sliding system predictinglarge permanent co-seismic movements of slopes[J]. Earthquake Engineering and Structural Dynamics,1996, 25(10): 1075-1093.
[7]	STAMATOPOULOUS C A, VELGAKI E G, SARMAS K. Sliding block back analysis of earthquake inducedslides [J]. Soils and Foundations, 2000, 40(6): 61-75.
[8]	STAMATOPOULOS C A, MAVROMIHALIS C,SARMA S. The effect of geometry changes on slidingblockpredictions [C]//The Fifth International Conferenceon Recent Advances in Geotechnical EarthquakeEngineering and Soil Dynamics. San Diego, CA, USA.Missouri University of Science and Technology, 2010:1-10.
[9]	STAMATOPOLOUS C A, MAVROMIHALIS C,SARMA S. Correction for geometry changes duringmotion of sliding-block seismic displacement [J]. Journalof Geotechnical and Geoenvironmental Engineering,2011, 137(10): 926-938.
[10]	CHANG C J, CHEN W F, YAO J T P. Seismic displacementsin slopes by limit analysis [J]. Journal ofGeotechnical Engineering, 1984, 110(7): 860-874.
[11]	KUMAR J. Stability factors for slopes with nonassociatedflow rule using energy consideration [J]. InternationalJournal of Geomechanics, 2004, 4(4): 264-272.
[12]	MICHALOWSKI R L. Stability assessment of slopeswith cracks using limit analysis [J]. Canadian GeotechnicalJournal, 2013, 50(10): 1011-1021.
[13]	YANG X L, LI L, YIN J H. Seismic and static stabilityanalysis of rock slopes by a kinematical approach [J].G′eotechnique, 2004, 54(8): 543-549.
[14]	LIU K. Stability analysis of anchored slopes subjectedto seismic loadings based on upper bound approach[D]. Dalian: Dalian University of Technology, 2015(inChinese).
[15]	CHEN J Y, ZHAO L H, LI L, et al. Back-analysisof shear strength parameters for slope with brokenline sliding surface based on upper bound approach[J]. Journal of Central South University (Science andTechnology), 2015, 46(2): 638-644 (in Chinese).
[16]	CHENWF. Limit analysis and soil plasticity [M]. Amsterdam:Elsevier, 1975.
[17]	BRITTO A M, KUSAKABE O. Stability of unsupportedaxisymmetric excavations in soft clay [J].G′eotechnique, 1982, 32(3): 261-270.
[18]	CHEN W F, GIGER M W, FANG H Y. On the limitanalysis of stability of slopes [J]. Soils and Foundations,1969: 9(4), 23-32.

Block Limit Analysis Method for Stability of Slopes During Earthquakes

Block Limit Analysis Method for Stability of Slopes During Earthquakes

可视化

摘要/Abstract

引用本文

使用本文

参考文献 18

相关文章 0

编辑推荐

Metrics

本文评价