Computational substantiation of the abutment structures of the fl oating bulkhead of the dry dock taking into consideration the staged construction and complex loads

Abstract

The article presents the results of calculated studies of the strength of the abutment structures of the floating dam of the dry dock. The calculated studies were carried out on the basis of the spatial finite-element model of abutment, in which there were simulated the enclosing walls of the pipe sheet pile, reinforced concrete abutment, soil of the base and filling. The results of stress-strain state and strength calculations have shown that the maximum displacements of the structures, stresses in the pipe sheet pile, ground anchors and reinforcement do not exceed the maximum permissible values. On the basis of the computational studies performed, the abutment structures of the floating bulkhead were substantiated. The abutment of the floating bulkhead to the dry dock structures serves to support it and transfer the pressing forces of the floating bulkhead to the ground. The enclosing abutment structures of the floating bulkhead are designed as vertical walls made of pipe sheet pile with a reinforced concrete abutment structure in the upper part. To ensure strength, a traditional solution was adopted with the anchoring of the pipe sheet pile with steel rods and ground anchors. To create a waterproof circuit, the project provides for the deepening of the pipe sheet pile into the rock base, the filling of the pipe cavity with concrete, welding of the locks with a metal plate with the filling of the cavity with polymer resin.