Numerical analysis of stabilized natural slope

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University of New Brunswick


This thesis focuses on the stability and deformation analyses of a natural slope in China. Marginally stable slopes coupled with intense rainfall events represent a common challenge to rapid urban development in hilly terrain. These conditions lead to landslides that can be disastrous causing significant damage to nearby properties and loss of lives. In this thesis, stabilization of a 60 m high natural slope is analyzed using finite element and limit equilibrium methods. The strength reduction finite element analysis was able to capture the behavior of the slope before the stabilization and its performance after stabilization. The factors of safety obtained with two different approaches are compared and discussed in this thesis. Deformation analysis is also conducted to investigate serviceability of the slope during slope stabilization construction activities. The result shows that combination of slope flattening and ground anchors was able to provide the required stabilization while satisfying the serviceability requirements as the deformations at the crest and toe of the slope are within tolerable limits.