Integrated thermal insulation structure of existing building exterior wall and construction method

Abstract

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.

Description

technical field [0001] The invention relates to the field of building technology, in particular to an integrated structure and construction method for heat preservation of the exterior wall of an existing building. Background technique [0002] With the development requirements of the national energy-saving policy, the domestic building exterior wall insulation system has developed rapidly. The energy-saving renovation of existing building exterior walls is the focus of energy-saving and emission reduction in my country's current construction industry. The objects of energy-saving renovation of existing building exterior walls are mainly those that have not been done before. Buildings with external wall insulation, and buildings with external wall insulation that have fallen off the external wall insulation; in the past, the conventional external wall insulation method is to directly paste the insulation board on the outside of the wall. This method has the following Problem: ...

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Problems solved by technology

[0002] With the development requirements of the national energy-saving policy, the domestic building exterior wall insulation system has developed rapidly. The energy-saving renovation of existing building exterior walls is the focus of energy-saving and emission reduction in my country's current construction industry. The objects of energy-saving renovation of existing building exterior walls are mainly those that have not been done before. Buildings with external wall insulation, and buildings with external wall insulation that have fallen off the external wall insulation; in the past, the conventional external wall insulation method is to directly paste the insulation board on the outside of the wall. This method has the following Problem: the service life is short (generally 25 years), the fire performance is not good, and the safety of the pasted bricks cannot be guaranteed; when some connectors are used to paste the insulation board, the anchoring force between the connector and the existing wall is low, resulting in The service life of the insulation board is reduced; the method for energy-saving renovation of the existing building exterior wall insulation proposed by the present invention can realize the integration of the existing building exterior wall insulation and structure, ensure the same service life of the exterior wall insulation and the structure, and achieve "Architectural Design Fire protection performance required by GB50016

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