Analysis Of Anti-sliding Pile Supporting Slop Stability During Earthquake

Slope engineering is closely related to human life.The disaster caused by slope instability has brought huge losses to mankind every year.Slope stability research and reinforcement design have become an important topic of geotechnical engineering research.Earthquake is one of the most significant factors which can induce slope instability.Anti-sliding pile as an effective reinforcement has been widely used in Slope engineering.However,the study is just started,and it remains more work to further research in this field.A generalized slope model is established to study the effect of anti-sliding pile reinforcement parameters on the dynamic response and stability of soil slope.The numercial simulation of the slope response is carried out by FLAC3D provided reference for theoretical research and engineering practice.The main work of this paper is following:Based on the comparison and analysis of the dynamic response of the slope under different seismic parameters,the influence of three important seismic parameters(amplitude,time,frequencies)on the dynamic response of the slope is discussed in four aspects:displacement,strain,acceleration and velocity.And the regularity of dynamic response of the slope under the earthquake conditions is summarized.The influence of pile parameters on the dynamic response of the anti-sliding pile under different seismic conditions is analyzed.The effects of different anti-sliding piles on the dynamic response of the slope are compared with those of the unreinforced slope.And the reinforcement effect of different anti-sliding pile reinforcement methods is discussed in four aspects:displacement,strain,acceleration and velocity.In this thesis,the description of basic principle of strength reduction method is introduced.The method of slope instability judgment is discussed,and the judgment process of slope dynamic instability is proposed.A Bishop-based pseudo-static method is presented to verify the dynamic safety factor which is calculated by strength reduction method,and the comparison of the two method is discussed.Finally,the strength reduction method is selected for the calculation of different anti-sliding pile dynamic stability factors.By the comparison and the evaluation of the unreinforced and reinforced situations,the efficiency of the anti-sliding pile under earthquake operating condition eventually is introduced in this paper.