Pressure-grouting construction method for structure consolidation

The invention relates to a building construction method, in particular to a pressure grouting construction method for structural reinforcement in execution with a reverse operation method. The invention comprises the steps that: first of all, performing pre-treatment for reinforcement structural columns; then, making steel forms outside the structural columns and opening grouting ports and air exhausts on the form panels; meanwhile, connecting a grouting device and a semi-U shaped tube on a secondary pressure device respectively with the grouting ports and the air exhausts; after the groutingis over and the grout material inside the steel form is initially hardened, the device grouting can fulfill secondary compression for the structural columns through arranging a hydraulic jack; thus, the invention can always guarantee certain pressure maintained on the grouting material during the period of starting with the beginning of grouting, and ends in the initial hardening of the grout material; meanwhile, the inve