Composite sandwich structural body for absorbing vibration and noise

Abstract

To provide a composite structure capable of reducing impact or consequent noise in a building or a structure causing noise by vibration and impact. The composite structure for absorbing impact and noise comprises an upper plate and a lower plate formed of a thin high-density material with high rigidity; a support body inserted between the upper plate and the lower plate and formed with a space inside that can be filled with a grain material; and an impact and noise absorber comprising heat resistant noise absorbing grains filled inside the support body. This composite structure for absorbing impact and noise can substitute EPS (expanded polystyrene) and EPP (expanded polypropylene) which are inter-layer heat insulating and noise buffer materials of the building, and has excellent impact absorbing ability and noise absorbing effect at the same time because of insert-bonding a honeycomb member of excellent impact absorbing power between upper and lower laminated plates and filling sand or the like in the honeycomb space.

Description

technical field [0001] The invention relates to a structure body for shock absorption, in particular to a composite sandwich structure body with light weight, excellent shock absorption ability, and mitigation of vibration and noise. Background technique [0002] With the popularity of apartment houses, people live next to each other and share walls and floors of limited thickness, making the noise problem on apartment floors one of the social focus issues. [0003] At present, the construction materials of apartments are mainly reinforced concrete or steel-framed concrete. However, the texture of the wall or floor of the concrete structure is relatively thin, and it is easy to transmit noise. [0004] The noise between floors is different from the continuous noise from cars, airplanes or construction sites. It is intermittent. Although the noise value is small, it touches the body more and makes people feel irritable. This kind of noise, under the comprehensive action of ...

AI Technical Summary

Problems solved by technology

[0013] However, most of these buffer devices require the installation of expensive equipment using hydraulic pressure, etc., and although they can absorb one-time vibration when changing their structure, they cannot solve other physical problems such as noise absorption.

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