Study on limit state of retaining wall under different geotechnical structures

Abstract

On the railway, anchor retaining wall is widely used in rock section in general area, while soil anchor rod is relatively less used. However, with the continuous development of civil engineering, the application of soil anchor is more and more. In this paper, the limit states of anchored retaining walls in sandy soil, clay soil, and rock strata are studied and analyzed. The limit state equation and function of the anchored retaining wall are determined. The reliability index of the bolt retaining wall is calculated by Monte Carlo method. Finally, according to the target reliability index, the partial coefficients of limit state design of anchor retaining wall under various design conditions (sandy soil stratum, clay main stratum and rock stratum) are calculated by general separation method, and the comprehensive partial coefficient obtained is compared with the total safety factor of current code. The limit state design expression of anchor retaining wall under various design conditions is formed.