摘要
采用三维离散元软件3DEC作为计算引擎,开展了结构面产状对岩质边坡动力响应影响的数值研究。在研究中记录边坡模型中每个监测点的响应加速度幅值,在此基础上,绘制了边坡的加速度峰值放大系数等值线图。研究结果表明,结构面产状的变化对加速度峰值放大系数等值线的分布特征有着显著的影响。相比于逆倾结构面边坡,顺倾结构面边坡具有更为强烈的地震动响应,其动力稳定性问题也显得更加突出。
Numerical simulation with software of 3DEC was conducted to study the influence of structural plane occurrence on dynamic responses of rock slopes. The maximum accelerations of every monitoring points at the slope were recorded, then the contour figure of amplification coefficient of peak ground acceleration（PGA） was calculated. It was shown that the distribution characteristic of contour of the amplification coefficient was remarkably affected by structural plane occurrence. Compared with the slope of anti- dip structural plane, the seismic dynamic response of the slope of down- dip structural plane is stronger, and its dynamic stability problem is more prominent.
出处
《人民长江》
北大核心
2014年第1期57-61,共5页
Yangtze River
基金
国家自然科学基金青年科学基金项目(41102195)
中国博士后科学基金面上资助项目(2012M521500)
中央高校基本科研业务费专项资金资助项目(CUGL100234)
关键词
动力响应
结构面
放大系数
3DEC
岩质边坡
dynamic response
structural plane
amplification coefficient
3DEC
rock slope
