Deformation characteristics analysis of Gapa landslide under earthquake
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
The three-dimensional Gapa landslide model is established by using the finite difference software FLAC3D. The El-Centro seismic acceleration history is selected as the dynamic excitation, and it is multiplied by the magnification factors 1 and 3, respectively. The calculation results show that the permanent displacement of slope will occur when the magnification factor equals to 1, but it will not slide; when seismic history is multiplied by 3, the slope will slide. Moreover, the deformation characteristics are different under the seismic excitation with different magnification factor. In the first case deformation mainly concentrated on the sliding body Ⅲ, but in the second case the deformation of sliding body Ⅰ is much more intense. This paper analyzed this phenomenon in three aspects of the parameters of composition material, the topographic factor and the dynamic characteristics of slope. The permanent displacement is calculated by Newmark finite sliding displacement method and the results meet the numerical calculation well. It shows that the sliding body Ⅲ has the greater permanent displacement due to the dynamic characteristics of slope. Also, the permanent displacement can also be used as the index for the effect of earthquake on local deformation to estimate the damage of earthquake.
Keywords:
Project Supported:
Clc Number:
Mobile website
® 2024 All Rights Reserved
冀公网安备13010502002656号
冀公网安备13010502002656号