The invention discloses an integrated
thermal insulation structure of an existing building exterior wall. The integrated
thermal insulation structure comprises an existing wall body, a
thermal insulation board and a
surface layer. The inner side of the thermal insulation board adheres to the outer side of the existing wall body. The outer side of the thermal insulation board is connected with thesurface layer. A gridded
mesh reinforcement is longitudinally arranged in the
surface layer. Communicating round holes are reserved in the existing wall body, the thermal insulation board and the
surface layer. Connecting pipes are horizontally laid inside the round holes. Small seams are evenly formed in the end faces, laid in the existing wall body, of the connecting pipes.
Pipe cushions are arranged at the ends, where the small seams are formed, of the connecting pipes. The ends, laid in the surface layer, of the connecting pipes penetrate through the
mesh reinforcement and are longitudinally provided with fixing reinforcements. The invention also provides a construction method of the integrated thermal insulation structure of the existing building exterior wall. The method comprises the following procedures of drilling holes, installing the connecting pipes and the
pipe cushions, expanding the connecting pipes, grouting, pasting the thermal insulation board and binding the
mesh reinforcement, and painting and maintaining the surface layer. The integrated thermal insulation structure of the existing building exterior wall realizes the integration of existing building exterior wall thermal insulation and the structure, so that the same serviceable life of the exterior wall external thermal insulation and the structure is ensured.