Stability analysis of slip resistant piles and 3-D geonet mats for grassed slope retaining slopes under rainfall effects
Aiming at the stability problem of anti-slide pile and three-dimensional geotechnical mesh mat grass slope protection under rainfall,the three-dimensional finite element model of anti-slide pile and three-dimen-sional geotechnical mesh mat grass slope protection is established by using ABAQUS with the strength reduc-tion method of finite element.Taking the catastrophe of horizontal displacement at the bottom of slope as the criterion of slope instability,the variation law of slope protection safety factor with rainfall duration under differ-ent working conditions is calculated and compared,and the influence of pile position and pile length on the sta-bility of anti-slide pile and three-dimensional geotechnical mesh mat grass slope protection under rainfall is compared with that without considering rainfall.The results show that the effect of rainfall duration on the three-dimensional geotechnical mesh mat grass slope stability is obvious;the length of anti-slide pile has a great influence on the stability of slope,and the length of pile should be 8 m;when the pile is placed in the middle of the slope without rainfall,the maximum safety factor can be obtained,and when the anti-slide pile is placed in the relative position(L0.4=4.8 m)under rainfall,the better anti-slide effect can be achieved;the effect of anti-slide pile and three-dimensional geotechnical mesh mat planting grass on reinforcing slope protection un-der rainfall is better than that under no rainfall,and it is better than the original slope.
anti-slide pile3-D geotextile mat planting grassslope stabilityrainfallfinite element strength re-duction method
万方数据
维普
