人工土山的地震永久变形分析

李明; 辛鸿博

doi:10.11779/CJGE201511027

人工土山的地震永久变形分析 English Version

李明,
辛鸿博

中冶建筑研究总院有限公司,北京 100088

详细信息

作者简介:
李明(1988- ),男,硕士,主要从事岩土地震工程方面的研究工作。E-mail: liming2008tm@163.com。

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出版历程
- 收稿日期: 2014-09-07
- 发布日期: 2015-11-19

Seismic permanent deformation of earth-fill hill

Central Research Institute of Building and Construction, MCC Group, Beijing 100088, China

摘要

摘要: 人工土山的地震稳定性评价是其设计与建造过程中的关键问题之一,目前还没有得到很好地解决。采用等效黏弹性分析理论和Newmark滑块位移法对土山的地震永久位移进行研究,分析了不同高度、坡度和地震动条件下人工土山的地震永久位移。发现当坡度较缓时,山坡最大位移滑块和拟静力法的最危险滑块不论是所处位置还是大小均有较明显差别。最后,根据土山最大地震永久位移量和屈服加速度的关系,提出利用屈服加速度估算人工土山地震永久位移的简便计算方法。
- 人工土山 /
- 屈服加速度 /
- 地震反应 /
- Newmark滑块位移法 /
- 永久位移
Abstract: The seismic stability of earth-fill hill is one of the key problems in the process of design and construction, and has not been understood properly. The seismic permanent displacement of earth-fill hill is studied by means of the equivalent linear method and Newmark sliding block analysis. The influences of heights, average gradients and input ground motions on permanent displacement are investigated. When the slope is gentle, there are significant differences in size and sliding surface between the maximum displacement sliding mass and the most dangerous sliding block discriminated by the pseudo-static Bishop’s method. Finally, using the yield acceleration of earth-fill hill, a simple method to estimate the seismic permanent displacement of earth-fill hill is proposed.
- earth-fill hill /
- yield acceleration /
- seismic response /
- Newmark sliding block analysis /
- permanent displacement

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参考文献(12)

[1]	辛鸿博, 赵静波. 奥林匹克森林公园仰山工程的几个岩土工程问题[C]// 海峡两岸土力学及基础工程、地工技术学术研讨会论文集. 台北, 2009: 328-335. (XIN Hong-bo, ZHAO Jing-bo. Geotechnical engineering problems of Yangshan in Olympic forest park[C]// Cross-Strait Seminar On Ground Engineering. Taipei, 2009: 328-335. (in Chinese))
[2]	中冶建筑研究总院有限公司. 奥林匹克森林公园挖湖堆山工程的岩土工程问题及环境影响[R]. 北京: 中冶建筑研究总院有限公司, 2008. (Central Research Institute of Building and Construction, MCC Group. Geotechnical engineering problems and environmental impact of earth-fill hill in Olympic forest park[R]. Beijing: Central Research Institute of Building and Construction, MCC Group, 2008. (in Chinese))
[3]	NEWMARK N M. Effects of earthquake on dams and embankments[J]. Géotechnique, 1965, 15(2): 139-160.
[4]	FRANKLIN A G, CHANG F K. Permanent displacements of earth embankments by Newmark sliding block analysis[R]. Army Engineer Waterways Experiment Station, 1977.
[5]	MAKDISI F I, SEED H B. Simplified procedure for estimating dam and embankment earthquake-induced deformations[J]. Journal of Geotechnical Engineering, 1978, 104(7): 849-867.
[6]	KRAMER S L, SMITH M W. Modified Newmark model for seismic displacements of compliant slopes[J]. Geotech Geoenviron Eng, 1997, 123(7): 635-644.
[7]	BRAY J D, TRAVASAROU T. Simplified procedure for estimating earthquake induced deviatory slope displacements[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2007, 133(4): 381-392.
[8]	HARDIN B O. The nature of stress-strain behavior of soils[J]. Earthquake Engineering and Soil Dynamics, ASCE, 1978(1): 3-89.
[9]	SEED H B, IDRISS L M. Soil moduli and damping factors for dynamic response analyses[R]. Berkeley: University of California, Berkeley, 1970.
[10]	ISHIBASHI I, ZHANG X. Unified dynamic shear moduli and damping ratios of sand and clay[J]. Soils and Foundations, 1993, 33(1): 182-191.
[11]	GB 50011—2010 建筑抗震设计规范[S]. 2010. (GB 50011—2010 Code for seismic design of buildings[S]. 2010. (in Chinese))
[12]	HYNES-GRIFFIN M E, FRANKLIN A G. Rationalizing the seismic coefficient method[R]. Miss: U S Army Corps of Engineers, 1984.