Development and implementation of a modular prefabricated building project made of wood and metal structures that eliminate cold bridges

The article reveals the issues of the author's working design with the construction of a modular prefabricated building, with the elimination of cold bridges in the enclosing and load-bearing structures. The object of the study is the project of a prefabricated modular building of a training and production center with the elimination of cold bridges. Cold bridges are observed in many modular prefabricated buildings when cold penetrates through the junctions of load-bearing and enclosing structures. This problem was solved in the design and construction of this building by using lightweight prefabricated wood-metal load-bearing structures connected to enclosing structures made of thermally insulated sandwich panels with mineral wool filling. The result is expressed in the construction of a prefabricated modular building of the training and production center with the elimination of cold bridges in the structures. As a result of the inclusion of a central core of wooden beams with significant thermal insulation properties in the supporting structures, it was possible to form wood-metal structural units that do not allow cold to enter the rooms of a modular building. The specific features of the results obtained in the study and the project were the consideration of harsh, sharply continental regional natural and climatic conditions of southeastern Kazakhstan. Thermal engineering calculations were made to evaluate the thermal characteristics of wood-metal and enclosing structures. The scope and conditions of application of the obtained research results are reflected in the significant interest of regional developers in prefabricated modular buildings with the elimination of cold bridges.