Implementation of Seismic Wave Theory in Homogeneous Slope Fracture Analysis
DOI:
https://doi.org/10.15273/ijge.2017.01.002Keywords:
landslide, seismic wave, fracture, dynamic response, specific effective contributing regionAbstract
For slope stability analysis, it is important to efficiently and directly detect potential sliding surfaces and fracture areas. Since slope failure is not induced by one broken surface but a region where may contain a number of cracks. In order to extend the application of the wave theory analysis method in computing slope dynamic response and reduce the cost, the concept of Specific Effective Contributing Region (SECR) is proposed in this research to assess a homogeneous rock slope‘s stability. By studying the dynamic response of all meshed surfaces based on seismic motion synthesis function in the SECR, the potential fracture region was detected efficiently and directly. Moreover, the relationship between the location of sliding surface and the frequency of excitation was investigated. All results obtained by this theoretical procedure are consistent with observations from a shaking table test. The proposed method can be further extended to study failure mechanisms of layered rock slopes induced by earthquakes.
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