Construction technology of single-pier large coping support system

The invention relates to the technical field of building construction, in particular to a construction technology of a single-pier large coping support system. The construction technology comprises the following steps of: after construction preparation, setting up an accessible ladder stand, figuring out the positions of pore passage embedded parts for supporting shearing force rods through the bottom elevation of a coping, and accurately embedding; after embedding the pore passage embedded parts, installing a jack, I-steel, inclined struts, distributive girders, diagonal bridging and a bracket, and laying a set-shaped steel bottom mold; after completing the erection of a support, monitoring the stress and deformation condition of the installed support body by adopting a sandbag prepressing support system; after prepressing the support, rechecking the bottom mold, after completion, tying coping reinforcing steel bars, erecting side mold plates, and carrying out coping pouring; and after completing the coping