Stability Analysis of a New Prefabricated Block Gravity Retaining Wall

A new type of prefabricated block gravity retaining wall was proposed, which was mainly composed of cast-in-place concrete base, precast block unit, reserved grouting hole, post-insertion steel bar and cast-in-place pressure top beam, etc., and was designed from the aspects of wall precast block, interblock connection, foundation form, etc. The local stability of the new prefabricated block gravity retaining wall under earth pressure was analyzed by the finite element method, and the force failure mode, displacement characteristics and stress distribution characteristics of retaining walls with different sizes were obtained. It was concluded that the weak points of the failure of the retaining wall were located between the base and the first layer assembly. According to the finite element numerical simulation results, combined with the classical retaining wall stability calculation theory, the calculation method and process of prefabricated block gravity retaining wall stability analysis were proposed, and the rationality of the calculation method and process was verified by engineering examples.