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Analysis of Slope Stability and Evaluation of Reinforcement Effect under Seismic Forces
Taking a loess roadbed high slope in Sanyangchuan area of Tianshui City as the study, GeoStudio software was used to conduct numerical simulation to analyze the stability of the slope under earthquake conditions, and anchor was used to strengthen the unstable slope and evaluate the reinforcement effect. The results show that when the peak acceleration is 0.25 g, the slope is unstable by using the time-history analysis method and the Newmark method. By comparing the safety factors obtained by the time-history analysis method and the pseudo-static method, we can see that the safety factor is estimated by the high average safety factor, and the minimum dynamic safety factor is the safest evaluation standard. According to the different incidence angles of bolt reinforcement, numerical simulation results show that the reinforcement effect is better when the incidence angle of bolt is 19 degrees. Meanwhile, among the three evaluation methods, M-P method may overestimate the stability of slope, and Janbu method is more conservative, while Bishop method is more reasonable.
Analysis of Slope Stability and Evaluation of Reinforcement Effect under Seismic Forces
Taking a loess roadbed high slope in Sanyangchuan area of Tianshui City as the study, GeoStudio software was used to conduct numerical simulation to analyze the stability of the slope under earthquake conditions, and anchor was used to strengthen the unstable slope and evaluate the reinforcement effect. The results show that when the peak acceleration is 0.25 g, the slope is unstable by using the time-history analysis method and the Newmark method. By comparing the safety factors obtained by the time-history analysis method and the pseudo-static method, we can see that the safety factor is estimated by the high average safety factor, and the minimum dynamic safety factor is the safest evaluation standard. According to the different incidence angles of bolt reinforcement, numerical simulation results show that the reinforcement effect is better when the incidence angle of bolt is 19 degrees. Meanwhile, among the three evaluation methods, M-P method may overestimate the stability of slope, and Janbu method is more conservative, while Bishop method is more reasonable.
Analysis of Slope Stability and Evaluation of Reinforcement Effect under Seismic Forces
Liu, Weilin (author) / Zhang, Yu (author) / Han, Bingbing (author) / An, Ning (author)
20th International Conference on Cold Regions Engineering ; 2023 ; Anchorage, Alaska
Cold Regions Engineering 2024 ; 593-605
2024-05-09
Conference paper
Electronic Resource
English
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