Dynamic and Static Combination Analysis Method of Slope Stability Analysis during Earthquake

• Published in: Mathematical problems in engineering Vol. 2014; no. 2014; pp. 1 - 13
• Main Authors: Zheng, Bin, Huang, Xiaoyuan, Wang, Zongjian, Lu, Liang, Arai, Katsuhiko
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Publishing Corporation 01.01.2014; Hindawi Limited
• Subjects: Civil engineering; Deformation analysis; Displacement; Dynamic response; Earthquakes; Failure; Failure analysis; Geosynthetics; Geotechnical fabrics; Laboratories; Mathematical analysis; Mathematical models; Seismic phenomena; Seismic response; Seismic stability; Seismic waves; Slope stability; Slopes; Stability analysis; Static stability; Strain gauges; Studies; Vibration analysis
• ISSN: 1024-123X; 1563-5147
• DOI: 10.1155/2014/573962

The results of laboratory model tests for simulating the slope failure due to vibration, including unreinforced slope and the slope reinforced by using geotextile, show that the slope failure occurs when a cumulative plastic displacement exceeds a certain critical value. To overcome the defects of conventional stability analysis, which evaluates the slope characteristics only by its strength parameters, a numerical procedure considering the stiffness and deformation of materials and geosynthetics is proposed to evaluate the seismic slope stability. In the proposed procedure, the failure of slope is defined when the cumulative plastic displacement calculated by a dynamic response analysis using actual seismic wave exceeds the critical value of displacement estimated by a static stability analysis considering seismic coefficient. The proposed procedure is applied to the laboratory model tests and an actual failure of slope in earthquake. The case study shows the possibility that the proposed procedure gives the realistic evaluation of seismic slope stability.