Afforesting Prefabricated Retaining Wall On Embankment Slope Stability Analysis

With the continuous development of China's economy and society and the continuous advancement of ecological civilization construction,the requirements of modern engineering for greening and landscape are getting higher and higher.Under this background,the green-assembled retaining wall is a new type of retaining structure,which has the characteristics of fast construction,high efficiency,ecological and environmental protection,and has been widely used.At present,there are few studies on the stability of the embankment greening and retaining wall,which can not meet the design requirements.Therefore,the thesis studies the stability of the green-assembled embankment retaining wall.Through the literature research,numerical simulation,and theoretical analysis,the thesis studies the effects of wall sill,wall toe and tenon on the stability of retaining wall under the three embankment filling parameters.The research contents and conclusions are as follows:For the secondary road standard packing,the embankment with a height of 6m was studied under the conditions of 95%,96%and 97%respectively.Using the numerical simulation software FLAC3D to study the deformation characteristics of the embankment slope and the displacement of the wall under different embankment lengths,different wall toe lengths and different crown locations,and combined with theoretical calculations,the wall resistance is obtained under different conditions.Slip stability factor and anti-overturning stability factor.The influence of wall sill,wall toe and tenon on the stability of retaining wall is analyzed.The reasonable wall length,wall toe length and crown position suitable for the reinforcement of secondary road embankment slope are proposed.In order to expand the application of this type of retaining wall,combined with the actual application engineering,taking the highway embankment slope treatment project of a highway tunnel as an example,the numerical simulation software FLAC3D was used to carry out the green-assembled retaining wall under natural working conditions and seismic conditions.The simulation shows the overall displacement of the embankment slope and the displacement map of the wall.The theoretical calculation results show that the anti-sliding stability coefficient Kc and the anti-overturning stability coefficient K₀ of the wall under two working conditions are mutually verified with the numerical simulation results.The green-assembled retaining wall is applied to the feasibility and effectiveness of highway embankment reinforcement in the earthquake zone.This thesis studies the relationship between the stability coefficient of retaining wall with different compaction degree and the heel length,toe length and tenon position of the retaining wall,so as to provide reference for the future structural design of prefabricated retaining wall in similar projects.