Abstract:
A sound−proof wall made of FRP in the form of a sound−proof wall panel that comprises a core and skin members made of FRP positioned on both sides of the core and whose weight per unit area is within the range of 10 − 60 kg/m 2 ; and a method of producing the same. This sound−proof wall, though light in weight, has a superior sound insulation property and will never corrode because it is made of FRP. Further, it has a high degree of freedom of engineering design including sound−proof property, design, and shape, capable of producing a desired sound−proof wall with ease. Further, since it has a high specific strength, it is possible to attain a drastic weight reduction while retaining the necessary strength, and to facilitate working, shorten construction time, and reduce construction cost.
Abstract:
PROBLEM TO BE SOLVED: To provide a sound insulating wall panel having the effect on noise prevention or noise diffusion, at the same time, having no possibility of causing small piece peeling trouble or the like and capable of being easily set even if a mounting place is high. SOLUTION: The sound insulating wall panel includes a soundproof section consisting of at least a core and skin materials located at both surface sides, and it is constituted of the skin paterials consisting of fiber-reinforced plastics.
Abstract:
PROBLEM TO BE SOLVED: To provide a sound insulating wall capable of adopting a lightweight constitution without deteriorating soundproof efficiency even in a position with the severe vibration such as a railway viaduct or the like. SOLUTION: The sound insulating wall installed at a railway track, a road or the like includes a sound insulating section and a mounting section to a building skeleton, and there is a part of elastic modulus or rigidity lower than the outer part within a range from the sound insulating section to the building skeleton in the sound insulating wall, (provided that the sound insulating section and the building skeleton are excepted).