Multi-contoured installation of roof boiler plants nodes in civil buildings

Roof boiler plants are the crucial components in development of heat generation within housing and utilities sector. They are given as engineering structures located on the roof of a construction project generating thermal energy for one or a limited number of consumers, interconnected on a legal basis or by process requirements. The main problem of roof boiler plant operation is the processes of vibrational energy transmission to the objects of thermal energy consumption. Subsequently it results in negative impact of noise and vibration on person inside the building. The reasons for these processes are: the processes of moving working bodies in mechanisms associated with the production of heat energy; the transfer of energy of vibrations through building structures; rigid connections of building structures; errors in the design of engineering measures. In terms of vibroacoustic protection, the following main methods of reducing impacts are identified: fighting structural noise; reducing the energy of vibrations from the roof boiler plants; reducing aeration noise; noise insulation of the technical floor under the roof boiler plants. One way to reduce the impact is to install a "floating floor" in the vibration source. This method is used when it is necessary to reduce vibration from engineering equipment on building structures. Disadvantage of the existing method for calculating “the floating floor” is that boiler plant equipment has various frequencies of natural and induced vibrations while being on the same averaged building floor structure. This does not allow mitigating the negative effect of vibration transfer to the full extent. The author presents results of further improvement of the method with the allocation of separate circuits of “the floating floor” when using roof boiler plants in civil buildings of cast-in-place construction.