Usage of Polyurethane Foam Acoustic Insulation in Cineplex Steel Structure

• Published in: 土木工程与建筑：英文版 2012, Vol.6 (11), p.1577-1583
• Main Author: Marko Pavlovic Zlatko Markovic Milan Spremic Dragan Budevac
• Format: Article
• Language: English
• Subjects: 公共建筑; 动态特性; 电影院; 聚氨酯材料; 聚氨酯泡沫; 钢结构; 隔声; 非传统材料
• ISSN: 1934-7359; 1934-7367

Modern public buildings, such as multiplex cinemas and theaters, along with application of state of the art sound effects bring high acoustic insulation demands. Cinemas are often a part of building complexes such as shopping malls with subjects that produce serious level of noise and vibrations. Apart to regular use of polyurethane in thermal insulation purposes, it is widely used in field of acoustic insulation. Usage of polyurethane foam pads, with specific dynamic characteristics, as a base for structure supports gives a wide range of possibilities in controlling the amount of structural noise and vibrations transferred to the structure. Structure itself and acoustical pads becomes an integral system that behaves together and need to be analyzed as a whole in extensive design. Dynamic characteristics of acoustic pads depend on stress level and in same time they represent elastic supports to the structure and therefore analyzes and design is an iterative process. In other way, introduce of non-conventional material in bearing structure brings some issues, such as transfer of shear forces, that has to be governed by proper structural detailing. There are several possibilities of application in bearing structures, such as above and below steel structure. This paper gives an overall view on polyurethane as material, construction and design principles and example of usage of acoustic pads in steel structure of＂Ster＂ cineplex in Belgrade.