Dynamic response of prestressed wrap-reinforced earth retaining walls

Under the action of earthquakes, as a flexible structure, the wrap-reinforced retaining wall structure can not be used normally because of large lateral deformation or local damage. The prestressed wrap-reinforced earth retaining wall, in which prestress is applied in geosynthetics in order that it is pilled in advance, is proposed. In order to improve the design theory of prestressed reinforced earth retaining walls, takeing the pseudo-dynamic method and the additional stress method as the theoretical basis, the reinforced earth retaining wall with prestressing back-pack is investigated. Based on the existing theory of lateral dynamic earth pressure and lateral displacement of reinforced earth retaining wall, a set of theoretical formulas for calculating the lateral dynamic earth pressure and lateral displacement of prestressed wrap-reinforced earth retaining walls are proposed. The accuracy and reliability of the method are verified by shaking table model tests. The proposed method has the advantages of simple calculation, wide application, and can be used to calculate the lateral dynamic earth pressure and lateral displacement of retaining walls, and it is of a certain significance of guiding and reference for the design theory of prestressed wrap-reinforced earth retaining walls.