SU1065562A1 - Noise protection screen - Google Patents

Abstract

NOISE PROTECTION SCREEN, including reinforced concrete supporting elements and flat plates, characterized in that, in order to simplify installation, reduce cost and increase acoustic efficiency, the supporting elements are made in the form of rectangular cross-sections, having inclined grooves on the planes facing the slabs angled 45 ° to the ribs of the uprights and 90 ° each other, a vertical groove is made along the axis of the rack, with the plates placed in the grooves of the racks. sl / s H jO5 cl Sl 05 1ЧЭ | I I h 0tff. f

Description

The invention relates to construction, in particular, to noise protection, and can be widely used in the construction of noise screens, designed for residential buildings and the surrounding territory from noise, which can be a source of transport, industrial enterprises and others. .d Screens consisting of reinforced concrete panels 3.3–5.0 m wide, 18 cm thick, installed on concrete column foundations 1 are known. A disadvantage of such screens is the dependence of the height of the panels on the required height of the screens, as well as weak sound-absorbing properties. A soundproofing wall is known for reflecting and absorbing sound, equipped with steel plates for reflecting sound, which are inclined in such a way as to reflect sounds coming from a source of schum upwards. For absorption of reflected sounds, steel tilted in the opposite direction is installed (1LITES with openings, behind which sound-absorbing material is located 2. The disadvantages of the screen include 1free metal consumption, weak anti-corrosion properties, laboriousness of replacing sound-absorbing materials as they are polluted. The closest to the invention is a soundproof screen that includes reinforced concrete support elements and reinforced concrete slabs, made in the form of ribbed prefabricated panels with a height of A screen with a regular or tensioned reinforcement. The vertical edges of the panels perform the functions of the supporting elements of the structure (3). A disadvantage of the known screen is the laboriousness of the installation, in which it is necessary to use special sealing gaskets placed between the side curvilinear edges of the edges of adjacent panels. The strength of the connection of the supporting panels among themselves, as well as with the foundation, is ensured with the help of galvanized bolts, which also complicates the installation and increases the cost of such screens. The purpose of the invention is to simplify the installation, increase the firing rate, reduce cost effectiveness. The goal is achieved by the fact that in a noise-proof screen, which includes reinforced concrete support elements and flat plates, the support elements are made in the form of rectangular cross-section racks having On planes facing the plates, inclined grooves located at an angle of 45 ° to the edges of the racks and 90 to each other, and a vertical groove along the axis of the rack, with the plates placed in the grooves of the racks. FIG. 1 shows a reinforced concrete rack; n FIG. 2 - flat reinforced concrete slabs; in fig. 3 - noise shield, option 1; in fig. 4 - section A-A in FIG. 3; in fig. 5 - noise shield, option II; in fig. 6 is a section BB in FIG. five; in fig. 7 - noise shield, version 111; in fig. 8 is a sectional view BB in FIG. 7; in fig. 9 - soundproof screen, option IV; in fig. 10 - section GG in FIG. 9; in fig. 11 - soundproof screen, option V; in fig. 12 is a section -D-D in FIG. .eleven; in fig. 13 noise shield Vi version; in fig. 14 shows the section EE of FIG. 13; in fig. 15 - soundproof screen, option VII; in fig. 16 is a section for F - F ha of FIG. 15; in fig. 17 - noise shield, option VIII; in fig. 18 is a sectional view 3-3 of FIG. 17; in fig. 19 - soundproof screen, option IX; in fig. 20 - section AND - AND in Fig. 19. Rack 1 (Fig. 1), with a cross section of 250 x X450 mm, has grooves 2 and 3 with a cross section of 70 x 120 mm on wide planes located at an angle of 45 ° to the faces of the rack and 90 A friend to a friend, and also has a vertical groove 4 on the same planes of the same section along the axis of the stand. Depending on the requirements for the screen, flat reinforced concrete plates 5 (Fig. 2) are 100 mm thick, 3000 and 6000 mm long, 200, 400 and 800 mm high, are inserted into these grooves. In the yielding of a set of panels, the screen can take on a different look. The mounting of various screen variants is carried out in the following manner. Option 1 (Fig. 3 and 4). The screen plates are installed in the vertical groove 4 of the rack 1, forming a flat vertical wall of the required height, depending on which the plates of 5 corresponding sizes are selected. Rack 1 set on the foundation. The screen in this case reflects the sound in the direction of the highway. Option II (Fig. 5 and 6). The screen plate 5 is placed in the lower groove 3 of the rack 1 at an angle of 45 ° to the horizon. Next, successively, screen plates 5 with a width of 800 mm are also placed in slots 2 and 3 of the rack I at an angle of 45 ° to the horizon to the required height of the screen. In this case, we get a broken screen height, scattering sound and partially reflecting it up. Option III (Fig. 7 and 8). A variation of variant II with sequential stacking in the grooves 2 and 3 of the rack 1 of plate 5 with a width of 400 mm at an angle of 45 ° to burn: 1 don. In this case, we get a broken screen with changing edges, scattering sound and partially reflecting it upwards. Option IV (Fig. 9 and 10). The plates 5 with a width of 200, 400 and 800 mm are placed in the vertical groove 4 of the rack 1. Then, from the side ib of the nJVMa source, in the inclined grooves 3 of the stand 1 are placed the plates 5 {400 mm wide parallel to each other with an emphasis in vertically arranged panels. In this case, we get a screen that dissipates sound and has a greater noise-protective efficiency due to the reflection of the sound wave in the grain and the presence of air cavities 6. Option V (Fig. 11 and 12). The plates 5 are placed in the vertical groove 4 of the rack 1. Option V is a variation of variant IV with the laying of the plates 5 in the grooves 2 and 3 of the rack 1 both from the side of the noise source and. from the opposite side. This is done to give the screen a good appearance from the side of a residential development. Option VI (Fig. 13 and 14). The installation is carried out similarly to version I. Then, plates 400 mm wide are laid perpendicular to the plates 5 (width 800 mm) in the inclined grooves 2 and 3. In this case, by increasing the reflecting surfaces, the dispersion of sound is increased, and due to the formation of air cavities between the plates, sound absorption is increased. Option VII (Fig. 15 and 16). The plates 5 with a width of 400 mm are placed in the inclined groove 2 of the rack 1. The same plates are placed in the vertical groove 4, then the plates are placed in the groove 3, etc. to the desired screen height. The result is a screen with a caisson section. Option VIII (Fig. 17 and 18). Plate 5 is placed in the vertical groove 4 of the rack 1, forming a flat vertical wall. The wall is crowned with a flat cantilever panel, laid in the upper inclined groove 3 at an angle of 45 ° to the horizon. Such screens are used when it is necessary to reduce the height of the screen without weakening its effectiveness. Option IX (Fig. 19 and 20). The plates 5 with a width of 400 and 800 mm are placed in inclined grooves 2 and 3 of the pillar 1 at an angle of 45 ° to the horizon with the support facing each other at an angle of 90 °. In this case, the sound is attenuated due to repeated reflection from the plates and sound absorption by air cavities 6. All screen variants can be crowned with a cantilever slab similar to version VIII. After installation, the joints of slabs 5 are embedded in cement mortar. The rack I is indiscreet vertically and makes it possible to select the required height of the rack without joining it. The invention makes it possible, from the smallest number of elements simple in manufacturing, installation and transportation, to assemble almost all existing types of screens, varying in height, configuration in plan and in vertical section, using screens in both flat and complex terrain conditions. In addition, it is possible to install screens that dissipate sound, screens with a visor when it is necessary to reduce them in height for sound insulation of high-rise buildings located near the highway, as well as to install screens at any angle in the plan by installing two racks on the same foundation in where the screen direction changes.

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Claims (1)

NOISE PROTECTIVE SCREEN, including reinforced concrete support elements and flat slabs, characterized in that, in order to simplify installation, reduce cost and increase acoustic efficiency, the support elements are made in the form of racks of rectangular cross-section, having inclined slots located at an angle on planes facing the plates 45 ° to the ribs of the racks and 90 ° to each other, the vertical groove is made along the axis of the rack, while the plates are inserted into the grooves of the racks. cn> cn