Design method for achieving overall sliding resistance of wing wall type tunnel portal

The invention discloses a design method for achieving overall sliding resistance of a wing wall type tunnel portal. By the adoption of the design method for achieving the overall sliding resistance of the wing wall type tunnel portal, the stability of the tunnel portal is improved, the safety coefficient of the tunnel portal is increased, accurate and reliable design is achieved, and the concrete masonry consumption of the tunnel portal is effectively reduced. The design method for achieving the overall sliding resistance of the wing wall type tunnel portal comprises the following steps that (1) basic calculation data are determined, wherein the basic calculation data include the stratum characteristic parameters, the physical parameters of building materials and the stability coefficient K0; (2) the dimensions of all portions of the tunnel portal are determined; (3) a whole end wall body, a wing wall body and a wall back in contact with the wing wall body are divided into a plurality of wall body blocks and