IMHE OpenIR  > 山地灾害与地表过程重点实验室
不同坡面角度碎石土斜坡动力响应特征研究
Alternative TitleDynamic response characteristics of gravel soil slope with different angles of inclination
梁双庆1,2,3; 苏立君1,4; 王洋1,4
Corresponding Author苏立君
2016
Source Publication振动与冲击
ISSN1000-3835
Volume35Issue:21Pages:153-158
Abstract

设计并完成比例1∶100的小型振动台模型试验,坡面角度为35°、45°、55°,在满足相似律的条件下,输入不同频率X,Z双向正弦波,研究碎石土斜坡动力响应规律和变形破坏特征。结果表明高程对地震波具有放大作用;水平向加速度峰值放大效应强于竖直向;随着坡面角度增大,水平向或竖直向加速度峰值高程放大效应先增强后减弱,45°时最显著;坡体下部水平向加速度峰值随高程缓慢上升,坡体上部快速上升;竖直加速度峰值在整个高程内上升,无明显分界;随频率增大,坡体内同一高程水平向加速度峰值变大,竖直向加速度峰值先增大后减小,25Hz时高程放大效果最明显。PIV结果表明坡度为45°,频率为25Hz时,坡肩水平向运动最剧烈。碎石土斜坡易发生坡肩破坏。

Other Abstract

A small-scale shaking table test for gravel soilslope with the geometric scale of 1:100 and inclination angles of 35°,45°and 55°was designed. A series of tests were performed under the excitation of sine waves with different frequencies in X and Z directions. The laws of dynamic responses and the characteristics ofdeformation and failure for gravel soil slope were studied. Results showed that the elevation has an amplification effect on seismic waves; the amplification ofhorizontal peak acceleration is stronger than that of vertical peak acceleration: with increase in inclination angle, the peaks of horizontal and vertical accelerations increase firstly and then decrease, the most obvious amplification occurs during the inclination angle of 45°; with increase in elevation, the peak of horizontal acceleration increases slowly at the lower part of the slope, but it increases quickly at the upper part; the peak of vertical acceleration increases with in the whole elevation; with increase in frequency, the peak of horizontal acceleration at the same elevation level increases, and the peak of vertical acceleration increases firstly and then decreases; the most obvious elevation's amplification effect occurs when the frequency is 25 Hz. The PIV analysis showed that the horizontal movement ofslope shoulder is the most obvious during the inclination 45°and the frequency is 25 Hz. It was shown that the gravel soil slope is easy to have shoulder failures under earthquake action. 

Keyword地震 碎石土斜坡 动力响应 坡面角度 变形破坏
Subject Area岩土力学
DOI10.13465/j.cnki.jvs.2016.21.024
Indexed ByEI ; CSCD ; 北大中文核心
Language中文
CSCD IDCSCD:5854772
Accession numberAccession number:20164803052489
Citation statistics
Cited Times:6[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17745
Collection山地灾害与地表过程重点实验室
Affiliation1.中国科学院水利部成都山地灾害与环境研究所中国科学院山地灾害与地表过程重点实验室
2.西安建筑科技大学西部建筑科技国家重点实验室(筹)
3.中国科学院青藏高原地球科学卓越创新中心
4.中国科学院大学研究生院
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
梁双庆,苏立君,王洋. 不同坡面角度碎石土斜坡动力响应特征研究[J]. 振动与冲击,2016,35(21):153-158.
APA 梁双庆,苏立君,&王洋.(2016).不同坡面角度碎石土斜坡动力响应特征研究.振动与冲击,35(21),153-158.
MLA 梁双庆,et al."不同坡面角度碎石土斜坡动力响应特征研究".振动与冲击 35.21(2016):153-158.
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