Method of Calculation Multilayers Construction

Most shopping and entertainment buildings (shopping malls, concert halls, exhibition centers) are hangar type buildings. In malls there is a widespread placement of water parks, go-karts, cinemas etc. For example, the Ocean Plaza shopping mall, Dream Town and more in Kyiv. Music in concert halls, sound design of exhibition centers, restaurants, shops, the noise of water systems in water parks, the sound of movie in movie theaters - this is the noise that spreads to the surrounding buildings. Shopping centers are located in close proximity to residential buildings, leading to the need to provide sound and sound insulation of buildings around. The way to solve specific technological problems depends on the type of noise, the functional purpose of the buildings and the operational requirements. In apartment buildings, partitions and load-bearing walls are just a barrier to the propagation of sound waves. However, to be completely independent of noise and not to disturb neighbors, the problem can be solved very easily - it is necessary to carry out sound insulation. Modern methods of calculating the sound insulation of multilayer non-uniform structures widely used in modern construction are considered. Calculations of similar designs were carried out, modern software and domestic construction norms were used. After analysis, we found the shortcomings of both, and developed their own methodology for calculating such structures, based on theoretical methods of domestic State Building Standards, New Zealand software INSUL, and practical results of calculations of such structures. Conducted a comparative analysis of these techniques. Current methods of calculating sound insulation are very similar and have minor differences. The general method of calculation is outlined. In addition, one of the calculation options may be INSUL Software. Its convenience is that it has a large base of materials and structures, often used on real objects. Another advantage is the friendly interface of the program. However, the downside is the price of the software and the lack of a trial version. The problem of sound insulation of roofs is solved by the addition of sheets GKL, but, unfortunately, the installation of fire systems, lighting systems, smoke ducts violates the integrity of the floor, which leads to deterioration of noise protection. Currently, there are no regulations in the country to calculate the sound insulation of multilayered structures, such as our flexible roof. Compared to INSUL software and methodology developed. The latter needs improvements and fixes.