JPH02141005U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1 to 7 are diagrams for explaining the sound insulation concrete panel of this invention, in which Figure 1 is a perspective view of the sound insulation concrete panel of the first embodiment, Figure 2 is a back view thereof, and Figure 3 is a perspective view of the sound insulation concrete panel of the first embodiment. is a sectional view taken along the line A-A in Figure 2, Figure 4 is a graph comparing its transmission loss with that of a conventional concrete panel, Figure 5 is a back view of the sound insulating concrete panel of the second embodiment, and Figure 6 is a graph showing the sound insulating concrete panel of the second embodiment. 3
Back view of the sound insulating concrete panel of the example, No. 7
The figure is a back view of the sound insulating concrete panel of the third embodiment. Figures 8 to 10 are diagrams for explaining the sound insulation wall of this invention, in which Figure 8 is a plan sectional view of the sound insulation wall, Figure 9 is a sectional view of the essential parts, and Figure 10 is the transmission loss. This is a graph comparing the noise barrier with a conventional sound insulation wall. FIG. 11 is a graph explaining the coincidence effect. FIG. 12 is a perspective view showing an example of a conventional sound-insulating concrete panel. 3... Sound insulation concrete panel, 4... Connection rib, 5... Damping rib, 6... Reinforcement rib, 7... Top part, 8... Wall part, 9... Hollow part, 10... Insulating fiber, 11 ...Structural material, 12...Caulking.

Claims (1)

[Claims for Utility Model Registration] (1) In a concrete panel reinforced with a plurality of reinforcing ribs, a plurality of damping ribs are formed on one surface parallel to each other at predetermined intervals, and the damping ribs are formed between each damping rib. A plurality of reinforcing ribs are formed in the thin part so as to extend between the damping ribs, and the shortest distance between the tops of the adjacent damping ribs is 1/1 of the wavelength corresponding to the critical frequency of the coincidence effect. 1. A sound insulating concrete panel characterized in that the wavelength is set to be smaller than 4 wavelengths, and the distance between the mutually opposing edges of each top of the panel is set to be larger than the 1/4 wavelength. (2) In a concrete panel reinforced with a plurality of reinforcing ribs, a plurality of damping ribs are formed on one side in parallel with each other at predetermined intervals, and the thin part between the damping ribs is A plurality of reinforcing ribs are formed so as to span the vibration damping ribs, and the shortest distance between the tops of each adjacent damping rib is set to be smaller than 1/8 wavelength of the wavelength corresponding to the limit frequency of the coincidence effect. A sound insulating concrete panel characterized in that the distance between the mutually opposing edges of each top of the panel is set to be larger than the 1/8 wavelength. (3) In a concrete panel reinforced with a plurality of reinforcing ribs, a plurality of damping ribs are formed parallel to each other at predetermined intervals on one surface, and a thin wall between the damping ribs is formed between the damping ribs. A plurality of reinforcing ribs are formed so as to span the vibration damping ribs, and the shortest distance between the tops of each adjacent damping rib is set to be smaller than 1/12 wavelength of the wavelength corresponding to the critical frequency of the coincidence effect. A sound insulating concrete panel characterized in that the distance between the mutually opposing edges of each top of the panel is set to be larger than the 1/12 wavelength. (4) Consists of two sets of walls constructed by connecting a plurality of sound insulating concrete panels as described in paragraphs 1, 2, and 3, and these walls are arranged in parallel at a predetermined interval. In a sound insulating wall having a structure in which a hollow part is provided between them, connecting ribs protruding in the same direction as the vibration damping ribs are formed at both ends of each sound insulating concrete panel, and the connecting ribs at both ends are directed toward the hollow part. A sound insulating wall characterized in that each sound insulating concrete panel is connected by connecting the connecting ribs.