JPS5854226B2 - soundproof structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a large-scale soundproof structure that prevents noise pollution caused by noise sources such as construction sites in urban areas.

As cities have become overcrowded in recent years, noise generated from various civil engineering machinery and vehicles at civil engineering construction sites, bus terminals, ready-mixed concrete brands, etc. has become a problem, especially in urban areas and residential areas. The impact is significant.

As a noise prevention measure, it may be possible to cover the entire construction site or workplace with a nearly closed building, but considering the size of a typical construction site, this may be extremely uneconomical. There are enough.

Therefore, a structure has been proposed that prevents the noise from spreading to the surrounding area by surrounding the noise source with a side wall and letting the noise escape upwards.In this case, the structure is designed with soundproofing as the main focus. Because of this, no consideration was given to ventilation inside the structure.

Naturally, exhaust gas from various machines and dust are generated in the workplace, so the working environment for workers inside the structure must be carefully considered.

This invention was devised in view of the above-mentioned circumstances, and aims to provide a soundproof structure that can prevent noise pollution due to noise diffusion and can ventilate a workplace etc. by natural convection.

The present invention will be explained below with reference to illustrated embodiments.

FIGS. 1 and 2 show an embodiment of a soundproof structure according to the present invention.

The soundproof structure includes a structure main body 2 provided surrounding a work space 1 such as a workshop, and a cavity group 4 consisting of a plurality of cavities 3 penetrating vertically.

The structure body 2 surrounds the working space 1 laterally.

A side wall 5 and a ceiling section 6 provided at the upper end of the side wall 5 and having an appropriate slope to cover the work space 1 together with the side wall 5.
It consists of

The cavity group 4 is configured by a plurality of cavities 3 formed by the partition walls 7 so as to form a lattice shape when viewed in plan.

Each of the upper end openings 8 of the cavity group 4 is positioned so as to have an upward slope toward the center of the cavity group 4, and is formed in a mountain-like shape.

Further, since the cavity group 4 is supported by the support column 9, the plurality of cavity groups form an upward slope from the side edge of the ceiling toward the center.

A sound absorbing material 10 such as glass wool which has been subjected to waterproof surface treatment is attached to the inner surfaces of the structure body 2 and the cavity 3 described above.

Note that the reference numeral 11 shown in FIG. 1 is an entrance/exit of the structure main body 2, and the size of the opening is determined in consideration of the working machine and the like.

In the above configuration, as shown in FIG. 1, each of the upper end openings 8 of the cavity group 4 is formed with an upward slope, so that the air 12 is directed to the surface of the upper partition wall 7 facing the air blowing direction. When the structure body 2 hits, the structure body 2 passes through the cavity, for example 3a.
Go inside.

This causes internal air 12 to flow out from the opposite cavity 3b.

Even when the wind direction is reversed, the same ventilation as described above is performed, and the same is true when the wind direction is different from that described above.

On the other hand, noise is absorbed by the sound absorbing material 10 attached to the inner surfaces of the structure body 2 and the cavity 3, and is radiated upward from the structure by the cavity group 4.

Therefore, the noise level distribution around the structure has a peak above the center of the structure and slopes downward toward the lateral sides of the structure, making it possible to significantly reduce the noise level around the sides of the structure. .

Next, the embodiment shown in FIG. 3 will be explained.

In this case, the only difference from the embodiments shown in FIGS. 1 and 2 is the cavity group, and the others are the same, so a description thereof will be omitted.

In this embodiment, the cavity group 4A is composed of a cavity 3A formed by a partition wall 7A provided with an upward slope toward the center.

By slanting the partition wall 7A in this way, as shown in FIG. 3, the wind 12 hitting the partition wall 7A is guided by the partition wall 7A and can be directed toward the inner surface of the peripheral wall 13 of the cavity group 4A. .

Therefore, the external air taken in from the cavity group 4A can flow to the lower part of the structure main body 2, and ventilation can be performed even more satisfactorily.

Next, in the embodiment shown in FIG. 4, contrary to the embodiment shown in FIG. 3, the partition wall 7B of the cavity group 4B slopes downward toward the center.

By slanting the partition wall 7B in this manner, the wind contact surface of the partition wall 7B forms an obtuse angle with respect to the wind direction, so resistance to the external air taken in is reduced, and the external air can be taken in smoothly.

5 and 6 are partially enlarged cross-sectional views showing an example of the entrance/exit structure of the structure main body 2. FIG.

In FIG. 5, the entrance/exit 1 is provided with a pair of shutters 14, 15 at an appropriate interval on the outside and inside, and a sealing wall 16 is provided across these shutters 14, 15.

In use, the external shutter 14 is first opened, and after a car or the like 18 enters the entrance/exit space 17, the external shutter 14 is closed.

Next, the internal shutter 15 is opened, and after the automobile or the like 18 moves into the structure body 2, the internal shutter 15 is closed.

By providing double shutters in this way, the entrance/exit 1
1 is always in a closed state, and noise inside the structure main body 2 can be prevented from being transmitted to the outside through the entrance/exit 11.

In FIG. 6, a passage 21 bent by partition walls 19 and 20 is provided inside the structure main body 2 near the entrance/exit 11. As shown in FIG.

By providing this bent passage 21, noise within the structure main body 2 is reflected and attenuated within the bent passage 21, and leakage of noise to the outside can be reduced.

As described above, according to the present invention, the upper end opening of the cavity group provided in the ceiling of the structure body is positioned in an upward slope toward the center, so that wind power can be used to improve the external appearance of the structure. Air can be introduced, so ventilation can be performed at the same time as soundproofing, and the working environment can be improved.

In addition, the sound-absorbing materials affixed to the inner surfaces of the structure body and the cavity group absorb noise, reducing not only the level of noise radiated to the outside through the cavity group, but also the noise level inside the structure body. This can prevent acoustic harm to workers.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing the configuration of a soundproof structure according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a longitudinal sectional view showing another embodiment with different cavity groups, and FIG. FIGS. 5 and 6 are longitudinal cross-sectional views showing other embodiments with different groups, and partially enlarged cross-sectional views showing the entrance/exit structure. 1... Working space, 2... Structure body,
3,3a. 3A, 3B...Cavity, 4 t 4 A, 4
B...Cavity group, 5...Side wall, 6...
... Ceiling part, 7.7A, 7B ... Bulkhead, 8.
...Top opening, 9... Support column, 10...
...Sound absorbing material, 11...Entrance/exit, 12...
...Wind, 13... Surrounding wall, 14...
External shutter, 15... Internal shutter, 16.
...Blocking wall, 18...Cars, etc., 1 21...Bending passage. 17... Entry/exit loss space 9.20... Bulkhead,

Claims (1)

[Claims] 1 The main body of the structure consists of a side wall that surrounds the side of the work space, a ceiling provided at the upper end of the wall, and a plurality of cavities that vertically penetrate the upper part of the work space, with an upward slope from the side edge of the ceiling toward the center. The cavity group is formed into a lattice shape when viewed from above, and the portion other than the cavity group is sealed, and a sound absorbing material is attached to the sealed inner surface and the inner surface of each of the cavities.