JP2007023662A - Airtight shelter and method of constructing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an airtight shelter which is high in soundproofing properties and exhaust gas diffusion preventive performance. <P>SOLUTION: The airtight shelter is constructed by covering upper and side portions of a vehicle traveling area 1 with soundproof panels 3 having sound absorption properties and sound insulation properties. By virtue of covering the upper and side portions of the vehicle traveling area 1 with the soundproof panels 3, noise and exhaust gas are prevented from leaking to the outside of the airtight shelter A. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an airtight shelter for preventing the diffusion of noise and exhaust gas generated on an elevated road or an elevated track, and a construction method therefor.

  Conventionally, a noise barrier is provided on the side of a road to prevent noise diffusion (see, for example, Patent Document 1). In this soundproof wall, a plurality of columns are arranged side by side on the road, and a soundproof panel is formed between adjacent columns, thereby forming a soundproof wall along the road. Is something that can be done.

  However, since such a sound barrier is open above the road, there is a problem that noise and exhaust gas easily leak and diffuse outside the sound barrier, resulting in poor soundproof performance and exhaust gas diffusion prevention performance. It was. In particular, on highways constructed in the city center, residential and commercial buildings exist in the vicinity of the highway, so a soundproof wall having high soundproof performance and high exhaust gas diffusion prevention performance has been desired.

In addition, with conventional sound barriers, work is done from the opposite side of the road (outside of the road) when attaching soundproof panels to the columns. For this reason, when forming a soundproof wall on a viaduct, it is equal to or more than a pier. There was a problem that a super high-rise scaffolding had to be built, and that dangerous work in high places was involved.
JP-A-10-121599

  The present invention has been made in view of the above points, and an object of the present invention is to provide an airtight shelter having high soundproof performance and exhaust gas diffusion prevention performance.

  It is another object of the present invention to provide a construction method for an airtight shelter that does not require a super-high-rise scaffolding and can reduce dangerous work in high places.

  The airtight shelter A according to the present invention is characterized in that the upper and side portions of the vehicle traveling unit 1 are covered with a soundproof panel 3 having sound absorbing properties and sound insulating properties.

  In the present invention, since the upper side and the side of the vehicle running portion 1 are covered with the soundproof panel 3, it is difficult for noise and exhaust gas to leak to the outside of the airtight shelter A, and soundproof performance and exhaust gas diffusion prevention performance are achieved. It can be raised.

  In the present invention, it is preferable to provide the exhaust duct 25 for exhausting the space covered by the soundproof panel 3.

  In the present invention, the exhaust gas in the space covered by the soundproof panel 3 can be exhausted by the exhaust duct 25 so as not to stay, and the air in the space covered by the soundproof panel 3 can be purified. .

  In the construction method of the airtight shelter A of the present invention, a plurality of arch-shaped structural members 2 are formed on both sides of the vehicle traveling unit 1, and the soundproofing panels 3 having sound absorption and sound insulating properties are adjacent to each other. By arranging the connecting member 4 between the structural material 2 and the soundproof panel 3 on the vehicle traveling unit 1 side and connecting the structural material 2, the soundproof panel 3 and the connecting member 4, The upper and side portions of the traveling unit 1 are covered with a soundproof panel 3.

  In the present invention, the soundproof panel 3 can be connected to the structural member 2 by the connection member 4 by work from the vehicle traveling unit 1 side, and even when the airtight shelter A is formed on the viaduct, the super-high-rise scaffolding Is not required to be assembled outside the vehicle travel unit 1, and dangerous work at high places can be reduced.

  In the present invention, the structural member 2 and the connecting member 4 can form the flange 5 for draining rainwater.

  In this invention, it is possible to drain the rainwater by forming the flange portion 5 using the structural member 2 and the connecting member 4, and to ensure drainage performance without increasing the number of parts. .

  In the present invention, since the upper and sides of the vehicle running part are covered with the soundproof panel, noise and exhaust gas are less likely to leak to the outside of the airtight shelter, and the soundproof performance and exhaust gas diffusion prevention performance are enhanced. Can do.

  Hereinafter, the best mode for carrying out the present invention will be described.

  The hermetic shelter A according to the present invention is formed on, for example, the viaduct 10 and covers (encloses) the side and upper side of the vehicle traveling portion 1 of the viaduct 10 as shown in FIG. It is formed in a tunnel shape. When the viaduct 10 is used for driving an automobile such as an expressway, the road portion provided on the upper surface of the bridge girder 11 is the vehicle running unit 1, and the viaduct 10 is used for running a rail vehicle such as an elevated track. In this case, the track laying portion on the upper surface of the bridge girder 11 is the vehicle traveling unit 1. FIG. 2 shows an example of a highway as the viaduct 10.

  The airtight shelter A includes a structural member 2, a soundproof panel 3, and a connecting member 4. The structural material 2 is composed of a pair of column portions 13 and 13, an intermediate column portion 39, and a beam portion 14 extending over the column portions 13 and 13 and the intermediate column portion 39, and is formed in an arch shape. Has been.

  The column portion 13, the intermediate column portion 39 and the beam portion 14 are formed of H-shaped steel or the like, and couple the plate-like panel attachment pieces 15 and the pair of plate-like connecting member attachment pieces 16 to each other. It comprises a support piece 17. The panel attachment piece 15 and the connecting member attachment piece 16 are provided to face each other. The column part 13 and the beam part 14 are arranged so that the connecting member attachment piece 16 faces the vehicle traveling part 1 side and the panel attachment piece 15 faces the opposite side of the vehicle traveling part 1.

  The soundproof panel 3 is a panel having sound absorption properties and sound insulation properties. For example, a rectangular plate having a sandwich structure in which face materials 19 and 20 are arranged on both sides of the sound absorption material 18 and bonded and integrated. Can be used. The width and length of the soundproof panel 3 may be appropriately set in consideration of the dimensions, workability, handleability, and the like of the airtight shelter A. For example, the width and length may be 1 to 2 m and the length may be 2 to 6 m. it can.

As the sound absorbing material 18, a fiber mat such as rock wool, glass wool, or metal fiber can be used. The thickness and density of the sound absorbing material 18 can be appropriately set depending on the required sound absorption rate, sound absorption frequency characteristics, panel strength, etc. For example, the thickness is 50 to 150 mm, preferably 80 to 120 mm, and the density is 80. ˜150 kg / m ³ , preferably 100 to 120 kg / m ³ .

  As the face materials 19 and 20, a steel plate, a galvanized steel plate, a coated steel plate, an aluminum-zinc alloy plated steel plate, an aluminum plate, a plastic plate, a fiber reinforced plastic plate, and the like can be used, and the thickness is required for the soundproof panel 3. The thickness can be set as appropriate depending on the weight, performance, and the like. For example, the thickness can be 0.5 to 3.2 mm, preferably 0.5 to 1.6 mm, and more preferably 0.5 to 1.0 mm. . Of the face members 19 and 20, one face member 19 is formed as a perforated plate, and the other face member 20 is formed as a flat plate having no holes. The through-hole 21 formed in the face material 19 which is a perforated plate can have a hole diameter of 3 to 10 mm and an opening ratio of 30 to 60%, but is not limited thereto.

  The soundproof panel 3 can absorb sound when sound enters the sound absorbing material 18 from the through hole 21 of the face material 19, and sound that has entered the sound absorbing material 18 leaks from the soundproof panel 3 due to the shielding of the face material 20. It can be prevented from being emitted, and has sound absorption and sound insulation.

  The connecting member 4 includes a structural material connecting piece 22 and a panel connecting piece 23. For example, a long Z-shaped steel having a substantially Z-shaped cross section can be used.

  Then, the airtight shelter A of the present invention is formed as follows. First, as shown in FIGS. 3A and 3B, a plurality of structural members 2, 2... Are provided on the bridge girder 11 of the viaduct 10. At this time, the plurality of structural members 2, 2... Are arranged in parallel at a predetermined interval in a direction parallel to the longitudinal direction of the bridge girder 11 (the traveling direction of the vehicle in the vehicle traveling unit 1). The lower part of the column part 13 of each structural material 2 is fixedly erected on the outer surfaces (surfaces opposite to the vehicle traveling part 1) of the side walls 12, 12 erected on both sides of the bridge girder 11. . Each column portion 13 can be fixed to the side wall 12 using a fixture such as an anchor bolt. Further, the lower part of the intermediate column part 39 is fixed to the central separation band 43 of the vehicle travel part 1. In this manner, the arch-shaped structural material 2 in which the beam portion 14 is installed between the upper ends of the pair of column portions 13 and 13 and the intermediate column portion 39 arranged to face each other with the vehicle traveling portion 1 interposed therebetween is used as the vehicle traveling portion 1. It can form so that it may extend over both sides. That is, the structural material 2 can be formed in a state where the beam portion 14 is disposed so as to straddle the vehicle traveling portion 1.

  Next, as shown in FIG. 4, a plurality of soundproof panels 3 are arranged between adjacent structural members 2 and 2. The soundproof panel 3 is attached to the structural member 2 (the column portion 13 or the beam portion 14) as follows. First, the soundproof panel 3 is arranged by positioning the end portion of the soundproof panel 3 on the vehicle traveling part 1 side of the panel mounting piece 15 of the structural material 2 and bridging between the adjacent structural materials 2 and 2. In this way, the plurality of soundproof panels 3, 3,... Are sequentially bridged between the adjacent structural materials 2, 2 from the lower end to the upper end of the structural material 2. At this time, the packing 24 is interposed between the surface of the panel mounting piece 15 on the vehicle traveling unit 1 side and the outer surface of the end of the soundproof panel 3 (surface opposite to the vehicle traveling unit 1). Moreover, the soundproof panel 3 arrange | positions the face material 19 which is a perforated board toward the vehicle traveling part 1 side. In order to arrange the soundproof panel 3 along the bent portion of the structural material 2, the soundproof panel 3 bent according to the shape of the bent portion of the structural material 2 can be used.

  Next, the connecting member 4 is disposed on the vehicle traveling unit 1 side of the structural material 2 and the vehicle traveling unit 1 side of the soundproof panel 3. Here, the connecting member 4 has a length equivalent to that of the structural material 2 and is arranged along the entire length of the structural material 2. Therefore, in order to arrange the connecting member 4 along the bent portion of the structural material 2, the connecting member 4 bent according to the shape of the bent portion of the structural material 2 is used.

  Next, the panel connecting piece 23 of the connecting member 4 arranged along the structural material 2 is connected to the soundproof panel 3 and the structural material connecting piece 22 of the connecting member 4 is connected to the connecting member mounting piece 16 of the structural material 2. To do.

  In connecting the panel connecting piece 23 and the soundproof panel 3, the panel connecting piece 23 is brought into contact with the surface of the soundproof panel 3 on the vehicle traveling unit 1 side (the surface of the face material 19), and then from the vehicle traveling unit 1 side. The fixture 26 is inserted into the soundproof panel 3 so as to penetrate the panel connecting piece 23 and the face material 19. Here, as the fixture 26, the panel connecting piece 23 and the soundproof panel 3 can be connected only by work from the vehicle traveling unit 1, such as valve tight or blind rivet. The panel connecting piece 23 and the face material 19 are sandwiched and connected by the head portion 26a of the fixture 26 located on the surface and the expanding portion 26b formed inside the soundproof panel 3. Here, it is preferable that the distance between the head portion 26a and the expanding portion 26b of the fixture 26 is slightly larger than the total thickness of the panel connecting piece 23 and the face material 19, so that the soundproof panel 3 A space movable in the thickness direction can be formed. And since this space becomes so-called play, even if the soundproof panel 3 receives negative pressure (wind pressure) from the vehicle traveling unit 1 side or the opposite side, the soundproof panel 3 moves (vibrates) in the thickness direction. It becomes easy to bend, and damage to the soundproof panel 3 due to negative pressure, for example, peeling of the face materials 19 and 20 from the sound absorbing material 18 can be prevented.

  In connecting the structural material connecting piece 22 and the connecting member mounting piece 16, the structural material connecting piece 22 is brought into contact with the surface of the connecting member mounting piece 16 on the vehicle traveling unit 1 side, and then the vehicle traveling unit 1 side. The fixing member 27 is inserted so as to penetrate the structural member connecting piece 22 and the connecting member attaching piece 16. As the fixing device 27, the nut 40 and the bolt 30 can be used. In this case, the nut 40 is attached to the outer surface side of the connecting member mounting piece 16 (on the side opposite to the vehicle running portion 1) by welding or the like. It is something to keep. Reference numeral 49 indicates a welded portion.

  Moreover, what is called a one side bolt etc. can be used as the fixing tool 27, and the structural material connection piece 22 and the connection member attachment piece 16 can be connected only by the operation | work from the vehicle traveling part 1 side. Is. The fixing device 27 is formed of a sleeve 29 having a flange 28 projecting from one end thereof, and a bolt 50 and a nut 51 screwed into the sleeve 29 from the flange 28 side. The head 50 a of the bolt 50 is in contact with the end of the sleeve 29 opposite to the flange 28. The nut 51 is screwed to the threaded portion 50b of the bolt 50 that protrudes toward the flange 28 side. Then, as shown in FIG. 5A, the fixture 27 is inserted into the bolt hole 31 penetrating the structural material connecting piece 22 and the connecting member mounting piece 16 from the vehicle traveling unit 1 side. At this time, the flange 28 is brought into contact with the surface of the structural member connecting piece 22 on the vehicle traveling unit 1 side at the periphery of the bolt hole 31, and the head 50 a of the bolt 50 and the tip of the sleeve 29 (on the opposite side to the flange 28). End of the connecting member mounting piece 16 is projected from the bolt hole 31 to the surface opposite to the vehicle traveling portion 1. Next, by rotating the bolt 50 with respect to the sleeve 29 and pulling the bolt 50 toward the vehicle travel unit 1 side, as shown in FIG. 5 (b), the tip of the connecting member mounting piece 16 at the head 50a. The expanded portion 32 is formed by crushing the portion and deforming the sleeve 29 so as to spread outward. In this way, the structural member connecting piece 22 and the connecting member mounting piece 16 are caulked (pinched) and connected by the flange 28 and the extended portion 32. Further, the nut 51 is tightened so that the bolt 50 is not loosened, and the portion of the bolt 50 that protrudes toward the vehicle traveling unit 1 is cut at the position of the imaginary line. As the one-side bolt, for example, an ST lock bolt can be used.

  Furthermore, as the fixture 27, a nut holder 33 called a clip nut or the like and a bolt 30 can be used. As shown in FIGS. 6 (a) and 6 (b), the nut holder 33 has a sandwiching portion 34 and a nut portion 35 having a substantially U-shaped cross section. An insertion hole 36 is formed in the clamping portion 34 at a position facing the nut portion 35. Then, as shown in FIG. 7A, the structural material connecting piece 22 is inserted inside the holding portion 34, and the structural member connecting piece 22 is elastically held by the holding portion 34 so that the nut holder 33 is connected to the structural material connecting piece. Attach to 22. At this time, the nut portion 35 and the insertion hole 36 are aligned with the position of the bolt hole 31 provided in the connecting member mounting piece 16. Further, the nut portion 35 is positioned on the outer surface side of the connecting member mounting piece 16 (the surface opposite to the vehicle traveling portion 1). Next, the structural material connecting piece 22 is arranged on the vehicle traveling part 1 side of the connecting member mounting piece 16, and the bolt hole 31 and the insertion hole 36 of the structural material connecting piece 22 are aligned. Thereafter, as shown in FIG. 7B, the structural material connecting piece 22 and the connecting member are inserted by inserting the bolt 30 into the bolt hole 31 and the insertion hole 36 from the vehicle traveling part 1 side and screwing into the nut part 35. The attachment piece 16 is connected.

  Then, a plurality of fixtures 26 are inserted at predetermined intervals along the panel connecting pieces 23 to connect the panel connecting pieces 23 and the face material 19 of each soundproof panel 3 and to connect the plurality of fixtures 27 to the structural material. A plurality of soundproof panels 3 are connected via the connecting member 4 by connecting the structural member connecting piece 22 and the connecting member attaching piece 16 by being inserted along the piece 22 and the connecting member attaching piece 16 at a predetermined interval. 3 can be attached to the structural member 2. Each side end portion of each soundproof panel 3 is attached to one of the adjacent structural members 2 and the other of the other by a connecting member 4, and thereby, between the adjacent structural members 2, 2 (of the adjacent column portions 13, 13. A plurality of soundproof panels 3, 3... Are installed between the adjacent beam portions 14 and 14. Further, as shown in FIG. 8, the soundproof panels 3 and 3 adjacent to each other in the vertical direction and the horizontal direction include a fitting concave portion 41 provided at one end of the soundproof panel 3 and a fitting convex portion 42 provided at the other end of the soundproof panel 3. Can be connected by fitting. 53 is a packing.

  Then, the airtight shelter A can be formed by connecting and attaching the soundproof panel 3 to the plurality of structural members 2, 2... Arranged side by side along the longitudinal direction of the vehicle traveling unit 1 in the same manner as described above. it can.

  In the airtight shelter A of the present invention, since it is formed so as to cover both the side and the upper side of the vehicle travel unit 1, the soundproof performance and The exhaust gas diffusion preventing performance can be enhanced.

  Further, in the present invention, since the structural member 2 and the connecting member 4 and the soundproof panel 3 and the connecting member 4 are connected from the vehicle traveling unit 1 side, even if the airtight shelter A is formed on the viaduct, It is not necessary to assemble a high-rise scaffold outside the vehicle traveling unit 1 (outside the bridge girder 11), and dangerous work at high places can be reduced.

  Furthermore, in order to provide the connecting member 4 along the entire length of the structural member 2, the space between the structural member 2 and the connecting member 4 can be formed as the flange portion 5, although the packing 24 is provided. Even if rainwater or the like enters the vehicle traveling unit 1 side of the soundproof panel 3 from the gap between the panel mounting piece 15 and the surface of the soundproof panel 3, the rainwater or the like can be discharged through the flange 5 and the structural material. The connecting member 4 for connecting the soundproof panel 3 and the soundproof panel 3 can be used as a saddle member, and drainage such as rain water can be drained by the saddle portion 5 composed of the structural material 2 and the connecting member 4, thereby increasing the number of parts. The drainage performance can be ensured without causing it to occur.

  As shown in FIG. 9, an exhaust duct 25 can be provided in the present invention. The exhaust duct 25 is provided with a duct box 37 protruding outward from the structural material 2 (on the side opposite to the vehicle traveling unit 1), and is disposed so as to extend from the duct box 37 to the lower side of the bridge girder 11. is there. The duct box 37 is composed of a frame material 38 formed of H steel or the like similar to the structural material 2 and a plurality of soundproof panels (not shown) similar to the above attached to the frame material 38. The exhaust duct 25 is supported by a support member 45 attached to the frame member 38 and the bridge girder 11.

  The airtight shelter A of the present invention has higher airtightness than the conventional soundproof wall, and pollutant gases such as exhaust gas tend to accumulate in the vehicle traveling unit 1. Therefore, by providing the exhaust duct 25 as described above, after the pollutant gas is sucked and purified by the exhaust duct 25, it can be exhausted to the outer space of the airtight shelter A, and soundproofing is achieved without polluting the surrounding air. The air in the space covered with the panel 3 can be purified.

  FIG. 10 shows another embodiment. In this airtight shelter A, the soundproof panel 3 is disposed without using the fixture 26, and other configurations are the same as in the above embodiment. In this embodiment, the soundproof panel 3 is attached to the structural material 2 and held only by sandwiching the end of the soundproof panel 3 between the panel mounting piece 15 of the structural material 2 and the panel connecting piece 23 of the connecting member 4. is there. A packing 24 is interposed between the panel mounting piece 15 and the soundproof panel 3. In this embodiment, the degree of freedom of movement of the soundproof panel 3 with respect to the structural material 2 and the connecting member 4 is greater than when the fixture 26 is used. Therefore, even if the soundproof panel 3 receives negative pressure (wind pressure) from the vehicle traveling unit 1 side or the opposite side, the soundproof panel 3 is likely to move (vibrate) or bend in the thickness direction or width direction. Damage to the soundproof panel 3 due to negative pressure is further less likely to occur.

It is sectional drawing which shows a part of embodiment of this invention. It is a one part schematic perspective view same as the above. The construction in progress is shown, (a) is a front view, (b) is a side view. It is a side view which shows the middle of construction same as the above. (A) (b) is a partial cross-sectional view. A clip nut same as the above is shown, (a) is a top view, (b) is a sectional view. (A) (b) is a partial cross-sectional view. It is sectional drawing which shows the connection of a soundproof panel same as the above. It is sectional drawing which shows an exhaust duct same as the above. It is sectional drawing which shows an example of other embodiment same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle traveling part 2 Structural material 3 Soundproof panel 4 Connecting member 25 Exhaust duct A Airtight shelter

Claims (4)

  An airtight shelter characterized in that an upper side and a side of a vehicle running portion are covered with a soundproof panel having sound absorption and sound insulation.   The airtight shelter according to claim 1, further comprising an exhaust duct for exhausting a space covered by the soundproof panel.   A plurality of arch-shaped structural materials are formed on both sides of the vehicle traveling portion, and a soundproof panel having sound absorption and sound insulation properties is disposed between adjacent structural materials, and the structural material and soundproofing are provided on the vehicle traveling portion side. A construction method for an airtight shelter characterized in that a connecting member is disposed between the panels, and the structural material and the soundproof panel and the connecting member are connected to cover the upper and sides of the vehicle traveling portion with the soundproof panel. . The construction method of the airtight shelter according to claim 3, wherein a flange for draining rainwater is formed by the structural material and the connecting member.

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