Analysis of Uplift Bearing Capacity of Inclined Anchor Plate in Soil Slope
Research purposes:A reasonable estimation of anchor plate's pulling capacity is an important guarantee to maintain the stability of anchor plate foundation.This paper focused on the inclined strip anchor plate buried in the soil slope stratum,constructed an asymmetric pulling failure mechanism of anchor plate under the limit state,and assumed that the soil failure hypothesis follows the nonlinear strength criterion and its non-correlated flow law.Based on the failure mechanism,the analytical expressions of the ultimate pulling capacity of anchor plate and the failure surface equation of soil above the anchor plate were derived by using the upper limit method and variational principle,and the influence of each parameter on the pulling capacity of anchor plate was systematically studied.Research conclusions:(1)The analytical expressions of the ultimate uplift bearing capacity of the anchor plate and the failure surface equation of the soil above the anchor plate were derived,and the effectiveness of the analysis method was verified by comparison with the existing literature results.(2)The failure range of soil above the inclined anchor plate presents a certain asymmetric feature.As the angle of anchor plate increases,the failure range of soil gradually shifts to the downward slope.Soil failure range is positively correlated with soil dilatancy coefficient and initial cohesion,and negatively correlated with nonlinear coefficient,unit weight and surface load.(3)The embedment depth ratio of anchor plate,embedment angle,surface inclination angle,soil cohesion and dilatancy coefficient have significant effects on the uplift bearing capacity of anchor plate and the uplift failure range of soil,which should be paid attention to in engineering design to realize the optimal layout of anchor plate foundation and the effective use of bearing capacity.
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维普
