强震条件下双面坡变形破坏机理的振动台物理模拟试验研究

肖锐铧; 许强; 冯文凯; 陈建君; 左雅娅

强震条件下双面坡变形破坏机理的振动台物理模拟试验研究

地质灾害防治与地质环境保护国家重点实验室, 成都理工大学成都 610059

基金项目:

国家重点基础研究发展计划课题(2008CB425801)、地质灾害防治与地质环境保护国家重点实验室科技减灾、重建家园专项基金（DZJK0811）联合资助

详细信息

作者简介:
肖锐铧,工程地质专业.Email：xiaoruihua0316@126.com

中图分类号: P642
计量
- 文章访问数: 3487
- HTML全文浏览量: 200
- PDF下载量: 1671
- 被引次数: 0
出版历程
- 收稿日期: 2009-11-18
- 修回日期: 2010-04-08
- 刊出日期: 2010-12-25

SHAKING TABLE SIMULATION EXPERIMENT ON DEFORMATIONFAILURE MECHANISM OF DOUBLESIDES SLOPE IN CONDITION OF INTENSE EARTHQUAKE

National Key Laboratory of Geohazard Prevetion and Geoenviroment Protection,Chengdu University of Technology,Chengdu 610059

摘要

摘要: 512汶川地震引发了数以万计的崩塌、滑坡、泥石流等地质灾害。为了研究双面坡在强震条件下的动力响应规律,本文在大量野外调查的基础上,采用振动台物理模拟试验手段,设计完成了四类11个模型试验,从改变模型的坡度和坡顶宽度、软岩硬岩结合、阶梯状坡形等角度,较系统地研究了双面坡在强震作用下的响应规律。试验结果显示：强震条件下地震水平惯性力是导致边坡破坏的主要原因；在地震情况下边坡变形破坏表现出明显的初动破坏效应；振动过程中双坡具有明显的共剪效应,坡面为阶梯状时其共剪效应更明显；坡体结构为上软下硬时下部硬岩对振动具有一定的放大效应,上硬下软时坡体易整体偏移产生变形破坏。试验结论与实际情况基本符合。
- 强震区 /
- 双面坡 /
- 振动台 /
- 物理模拟
Abstract: 512 Wenchuan earthquake triggered thousands of rockcollapses,landslides,debris flows and other geological disasters. In order to study the response of the doublesides slope to the earthquake,we designed a total of 11 models according to the field investigation. We took four factors into consideration to study the seismic response of the slope. The four factors are the slopedegree,the top width of slope,structure combination and the shape of the doublesides slope. The tests manifested that (a)seismic inertia force is the main factor that results in slope failure; (b)the deformation and failure of the slope has a relation to the initial seismic direction; (c)the doublesides slope shows an conjugatedshear phenomenon; (d)different structure combinations of slopes result in different failure modes; e)the conjugatedshear phenomenon is more obvious on the laddershaped doublesides slope. The test findings are well in line with the results of field investigation．
- Earthquake zone /
- Double sides slope /
- Shaking table /
- Physical modeling

HTML全文

参考文献(1)

[1] 许强,黄润秋. 5 ·12汶川大地震诱发大型崩滑灾害动力特征初探
[J].工程地质报. 2008, 16(6)： 721～729．Xu Qiang,Huang RunqiuKinetics characeristics of large landlides trigged by May 12th Wenchuan earthquakeJournal of Engineering Geology.2008, 16(6)：721～729.

[2] 冯文凯,许强,黄润秋. 斜坡震裂变形力学机制初探
[J]. 岩石力学与工程学报. 2009，28（增1）：3124～3130．Feng Wenkai,Xu Qiang,Huang Runqiu. Preliminary study on mechanical mechanism of slope Earthquakeinduced deformation. Journal of Rock Mechanics and Engineering. 2009，28（s1）： 3124～3130.

[3] 徐光兴,姚令侃,高召宁，等. 边坡动力特性与动力响应的大型振动台模型试验研究
[J].岩石力学与工程学报.2008, 27（3）： 624～632．Xu Guangxing,Yao Lingkan,Gao Zhaoning,et al. Large scale shaking table model test study on dynamic characteristics and dynamic responses of slope. Journal of Rock Mechanics and Engineering.2008, 27（3）：624～632.

[4] 许向宁.高地震烈度区山体变形破裂机制地质分析与地质力学模拟研究.（博士论文）
[D].成都：成都理工大学.2006Xu Xiangning. Geological Analysis and Geomechanics Analog Study of Mountain DeformationFailure Mechanism in High EarthquakeIntensity Area.(PhD. Dissertation). Chengdu University of Technology,chengdu. 2006

[5] 张平,吴德伦.动荷载下边坡滑动的试验研究
[J]. 重庆建筑大学学报.1997 19（2）： 80～86．Zhang Ping， Wu Delun. A Shaking-Table Test Research on Rock Slope. Journal of Chongqing J ianzhu University.1997 19（2）： 80～86.

[6] 梁庆国,韩文峰,马润勇,谌文武.强地震动作用下层状岩体破坏的物理模拟研究
[J]. 岩土力学.2005 26（8）： 1307～1311．Liang Qingguo,Han Wenfeng,Ma Runyong,Chen Wenwu. Physical simulation study on dynamic failures of layered rock masses under strong ground motion. Rock and Soil Mechanics. 200526（8）：1307～1311.

[7] 张倬元,王士天,王兰生.工程地质分析原理
[M].北京：地质出版社, 1994．Zhang Zhuoyuan,Wang Shitian,Wang LanshengPrinciples of engineering geological analysis. Beijing：Geological Publishing House, 1994.

[8] 王运生,罗永红,吉峰,等. 汶川大地震山地灾害发育的控制因素分析
[J].工程地质学报, 2008, 16(6)： 759～763．Wang Yunsheng,Luo Yonghong,Ji Feng,et al. Analysis of the controlling factors on geohazards in mountainous epicenter zones of the Wenchuan earthquakeJournal of Engineering Geology, 2008, 16(6)： 759～763.

[9] 黄润秋,裴向军,李天斌.汶川地震触发大光包巨型滑坡基本特征及形成机理分析
[J].工程地质学报, 2008, 16(6)： 730～741.Huang Runqiu,Pei Xiangjun,Li TianbinBasic characteristics and formation mechanism of the largest scale landslide at DAGUNGBAO occurred during the Wenchuan earthquake. Journal of Engineering Geology, 2008, 16(6)：730～741.

施引文献

资源附件(0)

访问统计