Surface Amplification Effect of Bedding Rocky Slope with Weak Interlayer under Earthquake

冯志仁; 刘红帅; 于龙

doi:10.13409/j.cnki.jdpme.2014.01.015

您当前的位置：

首页 >

文章列表页 >

Surface Amplification Effect of Bedding Rocky Slope with Weak Interlayer under Earthquake

更新时间：2025-12-11

- Surface Amplification Effect of Bedding Rocky Slope with Weak Interlayer under Earthquake
- Vol. 34, Issue 1, Pages: 96-100(2014)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.2014.01.015
  CLC： U457
- Published：2014
- 稿件说明：
移动端阅览
[1]冯志仁,刘红帅,于龙.地震作用下含软弱夹层顺层岩质边坡表面放大效应研究[J].防灾减灾工程学报,2014,34(01):96-100.

冯志仁, 刘红帅, 于龙. Surface Amplification Effect of Bedding Rocky Slope with Weak Interlayer under Earthquake[J]. 2014, 34(1): 96-100.
[1]冯志仁,刘红帅,于龙.地震作用下含软弱夹层顺层岩质边坡表面放大效应研究[J].防灾减灾工程学报,2014,34(01):96-100. DOI： 10.13409/j.cnki.jdpme.2014.01.015.

冯志仁, 刘红帅, 于龙. Surface Amplification Effect of Bedding Rocky Slope with Weak Interlayer under Earthquake[J]. 2014, 34(1): 96-100. DOI： 10.13409/j.cnki.jdpme.2014.01.015.

摘要

为了研究地震作用下含软弱夹层顺层岩质边坡表面的放大效应

借用FLAC3D软件

建立了含软弱夹层顺层岩质边坡动力分析数值模型;在合理考虑地震动输入、边界条件、网格划分与模型参数的基础上

分析了地震动峰值、频率、持时以及初动方向等因素影响下的边坡表面放大效应。研究结果表明:①地震动峰值、频率和初动方向对边坡表面放大效应的影响较显著

而地震动持时对边坡表面放大效应的影响微小;②随着地震动峰值的增加

放大效应由软弱夹层之上的坡面及坡顶面向坡肩点逐渐增大

坡肩点的放大效应最大;③当输入地震动频率小于边坡的自振频率时

边坡表面加速度放大倍数较小

且频率越小

放大倍数越小

当输入地震动频率大于边坡的自振频率时

边坡表面加速度放大倍数较大

且频率越大

放大倍数亦越大。

Abstract

This paper deals with the surface amplification effect of bedding rocky slope with weak interlayer under action of earthquake.Software FLAC3Dwas employed to establish a numerical model with consideration of earthquake input

boundary condition

mesh divison and model parameters.The effects of peak value

frequency

duration and initial direction of earthquake on the surface amplification were analyzed and discussed.The results shown that

（1）the peak value

frequency and initial direction of earthquake ground motion play a significant role in the surface amplification effect of rocky slope

while the duration of earthquake play a small role.（2）With increase of peak value of ground motion and the height of slope

the amplification factor increased

especially in the top corner.（3）When the frequency of ground motion is smaller than the natural vibration frequency of slope

the amplification factor of surface of slope decrease. However

when the frequency of earthquake is greater than the natural vibration frequency of slope

the amplification factor is greater and increases with increase of frequency.

关键词

Keywords

references

地震荷载作用下顺层岩体边坡变形特征分析 [J]. 肖克强,李海波,刘亚群,夏祥,张磊奇. 岩土力学 . 2007(08)

高边坡在水平动荷载作用下的动力响应规律研究 [J]. 秋仁东,石玉成,付长华. 世界地震工程 . 2007(02)

软夹层参数对边坡动力特性的影响分析 [J]. 刘立平,杨实君,李英民. 重庆大学学报(自然科学版) . 2007(05)

单面边坡的两种动力反应形式及其临界高度 [J]. 祁生文. 地球物理学报 . 2006(02)

边坡动力响应规律研究 [J]. 祁生文,伍法权,孙进忠. 中国科学E辑:技术科学 . 2003(S1)

复杂岩质边坡锚固工程地震敏感性分析 [J]. 姚爱军,苏永华. 土木工程学报 . 2003(11)

岩石边坡地震作用近似计算方法 [J]. 何蕴龙,陆述远. 岩土工程学报 . 1998(02)

岩质边坡地震稳定性分析方法研究 [D]. 刘红帅. 中国地震局工程力学研究所 2006

Seismic stability analysis of fractured rock slopes by yield design theory [J] . L. Siad. Soil Dynamics and Earthquake Engineering . 2003 (3)

Soil slopes under combined horizontal and vertical seismic accelerations [J] . Hoe I.Ling,DovLeshchinsky,YoshiyukiMohri. Earthquake Engng. Struct. Dyn. . 1998 (12)

Application of distinct element method in dynamic analysis of high rock slopes and blocky structures [J] . Zhang Chuhan,O.A. Pekau,Jin Feng,Wang Guanglun. Soil Dynamics and Earthquake Engineering . 1997 (6)

Views

596

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Dynamic Response of Gas Storage Cavern in Bedded Salt Rock to Earthquake

Study on the Dynamic Response of Anchorage System under Earthquake

Comparative Analysis of Fiber Monitoring and Numerical Simulation on the K3 Slope of Guangdong-Jiangxi Expressway

Finite Element Analysis of Mechanical Properties of Pile-cap Connections for Prestressed Concrete Solid Pile Using Snap-in Mechanical Connection

Numerical Simulation of the Influence of Unloading Time on the Cracking and Stress Wave Propagation in a Circular Tunnel Surrounding Rock

Related Author

王贵君

张岭

刘存宽

蔡盛鑫

岂天晨

李楠

汪班桥

门玉明

Related Institution

No data

⁰