摘要
地震区岩土边坡地震永久位移是评价边坡稳定性的重要参量。根据Newmark地震永久位移分析理论,基于Spencer法,采用斜条分法以适应实际岩土边坡中可能倾斜的条块间界面,考虑滑面抗剪强度震动衰减影响,提出了一种适合岩土边坡地震永久位移计算新方法。通过与已有试验结果对比分析发现,与现有计算方法相比,本文方法不仅适应性强,而且计算精度更高。
The seismic permanent displacement of geotechnical slope in Earthquake zones is an important parameter in evaluating slope stability. Based on the Newmark＇ s theory of analysis of seismic permanent displacement and Spencer ＇s method using a inclined slice method to adapt to the interface which may be tilted between slices,Considering the attenuation of the shear strength under seismic vibration on the sliding surface,a new method which is suitable for geotechnical slope is proposed to calculate the seismic permanent displacement. Compared with the existing experimental results,it can be found that this new method is not only more adaptable than the existing calculation methods,but also more accurate in the calculation precision.
出处
《公路工程》
北大核心
2017年第3期1-5,25,共6页
Highway Engineering
基金
国家自然科学基金项目(41572298)
关键词
边坡
地震
地震位移
斜条分法
slope
earthquake
seismic displacements
inclined slices
