Soundproof panel for tunnel, soundproof wall assembly unit for tunnel, soundproof wall assembly block for tunnel, and soundproof wall for tunnel

Abstract

To provide a soundproof panel for a tunnel having recyclability in excellent recycling rate.SOLUTION: A soundproof panel is used for the soundproof wall for a tunnel installed in front of a pit mouth of the tunnel, the soundproof panel for the tunnel including: an outer peripheral frame in a rectangular shape; a pair of outer plates in a rectangular shape placed on a front surface and a rear surface; a first brace reinforcing the outer peripheral frame; and soundproof material enclosed in a receiving space formed with the pair of outer plates and the outer peripheral frame.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a tunnel soundproof panel, a tunnel soundproof wall assembly unit, a tunnel soundproof wall assembly block, and a tunnel soundproof wall. [Background technology]

[0002] To reduce noise such as blasting sounds during tunnel construction, tunnel soundproofing walls are installed in front of the tunnel entrance. In recent years, the development of reusable tunnel soundproofing walls has become increasingly important in order to achieve Sustainable Development Goal (SDG) No. 12. In addition, flexible responses to customer needs for tunnel soundproofing walls, which change depending on the scale, work content, and surrounding conditions of tunnel construction, are required.

[0003] Patent Document 1 discloses a block-shaped assembly unit (hereinafter referred to as a "tunnel soundproof wall assembly block") that includes small wall members and is used to install a tunnel soundproof wall. The tunnel soundproof wall assembly block described in Patent Document 1 can be reused after the tunnel construction is completed. Patent Document 2 discloses a soundproof wall unit (hereinafter simply referred to as a "tunnel soundproof wall assembly unit") that includes a steel frame with grooves for fitting a soundproof panel (hereinafter referred to as a "tunnel soundproof panel"). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-138393 A [Patent Document 2] JP 2005-195776 A Summary of the Invention [Problem to be solved by the invention]

[0005] The inventors thought that by combining the tunnel soundproof wall assembly block of Patent Document 1 with the steel frame having the groove of Patent Document 2, it would be possible to provide a tunnel soundproof wall assembly block that allows the tunnel soundproof panel to be changed and allows the tunnel soundproof panel pulled out of the groove to be reused after the tunnel construction is completed. However, the tunnel soundproof panel is heavier in weight and used in a harsh environment than the soundproof panels used for noise control of roads, railways, etc. Therefore, the simple combination of the above technologies may cause distortion in the tunnel soundproof panel, making it impossible to reuse it.

[0006] The cause of the distortion of the tunnel soundproof panel was considered to be distortion of a steel frame in a tunnel soundproof wall assembly block, the steel frame having a groove into which the tunnel soundproof panel is fitted. Therefore, the addition of braces to the steel frame was considered to improve the strength of the tunnel soundproof wall assembly block. However, the addition of the braces may reduce the working space in the tunnel soundproof wall assembly block, which may reduce the working efficiency. Furthermore, the improvement of the strength of the tunnel soundproof wall assembly block cannot suppress the distortion of the tunnel soundproof panel itself due to its own weight. Therefore, there was a concern that the probability that the tunnel soundproof panel can be reused (hereinafter referred to as the "reuse rate") would not be sufficiently improved.

[0007] The present invention has been made in view of the above circumstances, and has an object to provide a tunnel soundproof panel having an excellent reuse rate. Another object of the present invention is to provide a tunnel soundproof wall assembly unit, a tunnel soundproof wall assembly block, and a tunnel soundproof wall that use the tunnel soundproof panel having the above-mentioned excellent reuse rate and that are highly responsive to customer needs. [Means for solving the problem]

[0008] (1) The soundproof panel used in the tunnel soundproof wall of the present invention to be installed in front of the tunnel entrance is as follows: A rectangular outer frame; A pair of rectangular outer panels arranged on the front and rear; A first brace that reinforces the outer perimeter frame; The vehicle further includes a soundproofing material sealed in an accommodation space formed by the pair of outer panels and the outer peripheral frame.

[0009] Since the tunnel soundproof panel of the present invention has the first brace, the occurrence of distortion is reduced, and therefore the tunnel soundproof panel of the present invention has an excellent reuse rate.

[0010] (2) Preferably, the outer peripheral frame includes a pair of first outer frames extending in a vertical direction and a pair of second outer frames extending in a horizontal direction, One end of each of the first braces is fixed to one of the first outer frames, and the other end is fixed to the other of the first outer frames.

[0011] According to the tunnel soundproof panel of (2) above, the installation work of the first brace is concentrated in the first outer frame, thereby improving the productivity of the tunnel soundproof panel.

[0012] (3) The tunnel soundproof wall assembly unit of the present invention is The tunnel soundproofing panel; A plurality of first frames that form grooves into which the tunnel soundproof panel is fitted from the second outer frame side; a second frame connecting the plurality of first frames; Equipped with.

[0013] The tunnel soundproof wall assembly unit of the present invention includes the tunnel soundproof panel of the present invention having the first brace. Therefore, the tunnel soundproof panel used in the tunnel soundproof wall assembly unit of the present invention has an excellent reuse rate. Furthermore, the tunnel soundproof wall assembly unit of the present invention can appropriately change the tunnel soundproof panel to be used based on the scale, work content, surrounding conditions, etc. of the tunnel construction. Therefore, the tunnel soundproof wall assembly unit of the present invention has excellent response capabilities to customer needs.

[0014] (4) Preferably, the groove has a groove width that allows a plurality of the tunnel soundproof panels to be fitted therein.

[0015] According to the tunnel soundproof wall assembly unit described above in (4), the freedom of combination of the tunnel soundproof panels used in the tunnel soundproof wall assembly unit is further improved, which further improves the ability to respond to customer needs.

[0016] (5) Preferably, the tunnel soundproof wall assembly unit has a first fastener for fixing the tunnel soundproof panel and the first frame.

[0017] (6) Preferably, the tunnel soundproofing panel has a first fixing hole penetrating from the front surface to the back surface of the tunnel soundproofing panel in the vicinity of the first outer frame, The first frame has a second fixing hole at a position corresponding to the first fixing hole of the tunnel soundproof panel fitted into the groove, The first fastener has a first insertion portion for insertion into the first fastening hole and the second fastening hole.

[0018] According to the tunnel soundproof wall assembly unit of (5) or (6) above, the first brace can fully function not only as the tunnel soundproof panel but also as a brace for the tunnel soundproof wall assembly unit, thereby improving the strength of the tunnel soundproof wall assembly unit.

[0019] (7) The tunnel soundproof wall assembly block of the present invention is A pair of (3) tunnel soundproof wall assembly units; a third frame connecting upper and lower end sides of the pair of tunnel soundproof wall assembly units; Equipped with.

[0020] The tunnel soundproof wall assembly block of the present invention includes the tunnel soundproof wall assembly unit of the present invention. Therefore, the tunnel soundproof panel used in the tunnel soundproof wall assembly block of the present invention has an excellent reuse rate. Furthermore, the tunnel soundproof wall assembly block of the present invention allows the above-mentioned tunnel soundproof panel to be changed as appropriate. Therefore, the tunnel soundproof wall assembly block of the present invention has excellent response capabilities to customer needs.

[0021] (8) Preferably, the tunnel soundproofing panel includes a first tunnel soundproofing panel and a second tunnel soundproofing panel, the first outer frame having different lengths in the longitudinal direction, The vertical length of the first tunnel soundproofing panel is longer than the vertical length of the second tunnel soundproofing panel, The above tunnel soundproof wall assembly block is A first assembly block including the tunnel soundproof wall assembly unit configured to fit two of the first tunnel soundproof panels in the width direction; A second assembly block including the tunnel soundproof wall assembly unit configured to fit two of the second tunnel soundproof panels in the width direction; A third assembly block including the tunnel soundproof wall assembly unit configured to fit one of the first tunnel soundproof panels in the width direction; Includes.

[0022] According to the tunnel soundproof wall assembly block of (8) above, the tunnel soundproof wall can be flexibly constructed according to the customer's needs, which improves the ability to respond to customer needs.

[0023] (9) Preferably, the first frames arranged at both ends in the width direction have door mounting portions for mounting a door.

[0024] The tunnel soundproof wall constructed using the tunnel soundproof wall assembly block (9) above allows the doors to be flexibly set according to customer needs, which improves the ability to respond to customer needs.

[0025] (10) Preferably, a second brace is included for reinforcing the space between the pair of soundproof wall assembly units for a tunnel.

[0026] According to the tunnel soundproof wall assembly block of (10), the strength of the tunnel soundproof wall assembly block is improved. Also, distortion of the tunnel soundproof panel caused by distortion of the tunnel soundproof wall assembly block is reduced. Therefore, the tunnel soundproof panel used in the tunnel soundproof wall assembly block of (10) has a higher reuse rate.

[0027] (11) The tunnel soundproof wall of the present invention is A tunnel soundproof wall assembly block according to any one of (7) to (10), A second fastener for fastening the plurality of tunnel soundproof wall assembly blocks in a width direction; a third fastener for fastening the plurality of tunnel soundproof wall assembly blocks in a height direction; Equipped with.

[0028] The tunnel soundproof wall of the present invention includes the tunnel soundproof wall assembly block of the present invention. Therefore, the tunnel soundproof panel used in the tunnel soundproof wall of the present invention has an excellent reuse rate. In addition, according to the tunnel soundproof wall of the present invention, the tunnel soundproof panel can be appropriately modified to flexibly meet customer needs.

[0029] (12) Preferably, the tunnel soundproof wall is The tunnel soundproof wall assembly block is the tunnel soundproof wall assembly block according to any one of (8) to (10), At least one of the above-mentioned tunnel soundproof wall assembly blocks is selected from only three types of assembly blocks: a first assembly block, a second assembly block, and a third assembly block.

[0030] According to the above-mentioned (12) soundproof wall for tunnels, it is possible to construct a soundproof wall for tunnels that can accommodate various sizes of tunnel entrances by combining only three types of assembly blocks. Therefore, it is possible to reduce inventory costs while maintaining the ability to respond to customer needs. Effect of the Invention

[0031] According to the present invention, a tunnel soundproof panel having an excellent reuse rate is provided. Also, according to the present invention, a tunnel soundproof wall assembly unit, a tunnel soundproof wall assembly block, and a tunnel soundproof wall are provided, which use the tunnel soundproof panel having the above-mentioned excellent reuse rate and have excellent responsiveness to customer needs. [Brief description of the drawings]

[0032] [Figure 1] FIG. 2 is a six-view diagram of a tunnel soundproof panel according to an embodiment. [Diagram 2] FIG. 2 is a front view of the tunnel soundproofing panel shown in FIG. 1 taken along the line XX. [Diagram 3] FIG. 11 is a six-view diagram of another tunnel soundproofing panel according to an embodiment of the present invention. [Figure 4] FIG. 2 is a schematic front view of the tunnel soundproof wall assembly unit according to the embodiment. [Diagram 5] FIG. 5 is a YY cross-sectional view of the tunnel soundproof wall assembly unit shown in FIG. 4. [Figure 6] 4A to 4C are six-view diagrams of a frame structure of a first assembly block according to the embodiment. [Figure 7] 1 is a perspective view showing how the tunnel soundproof panel is fitted into the frame structure of the first assembly block. FIG. [Figure 8] FIG. 8 is a perspective view of the first assembly block after the tunnel soundproof panel of FIG. 7 has been fitted in place. [Figure 9] FIG. 9 is a plan view of the first assembly block shown in FIG. 8. [Figure 10] 11A to 11C are six-view diagrams of a frame structure of a second assembly block according to the embodiment. [Figure 11]11A to 11D are six-view diagrams of a frame structure of a third assembly block according to the embodiment. [Figure 12] FIG. 2 is a front view of the first tunnel soundproof wall according to the embodiment. [Figure 13] FIG. 2 is a schematic diagram showing the arrangement of tunnel soundproof wall assembly blocks used in the first tunnel soundproof wall. [Figure 14] FIG. 1 is a schematic diagram showing the arrangement of tunnel soundproof wall assembly blocks used in the second tunnel soundproof wall. [Figure 15] FIG. 13 is a schematic diagram showing the arrangement of tunnel soundproof wall assembly blocks used in the third tunnel soundproof wall. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

[0034] [Soundproofing panels for tunnels] (Tunnel Soundproof Panel 100) FIG. 1 is a six-view diagram of a tunnel soundproofing panel 100 according to an embodiment of the present invention. The tunnel soundproofing panel 100 has the same shape on the front and back, so the front and back views are shown in one diagram. Similarly, the top and bottom, and the right and left sides have the same shape, so the top and bottom views, and the right and left side views are shown in one diagram. FIG. 2 is a front view of the XX cross section of the tunnel soundproofing panel 100 shown in FIG. 1 and FIG. 2 show the vertical and horizontal directions of the tunnel soundproofing panel 100, respectively.

[0035] The tunnel soundproof panel 100 has a rectangular outer peripheral frame 110 and a pair of rectangular outer plates 120 arranged on the front and back. The outer peripheral frame 110 and the outer plates 120 are made of steel. The tunnel soundproof panel 100 has a flattened rectangular parallelepiped shape with the vertical direction being longer than the horizontal direction.

[0036] The entire periphery of the pair of outer panels 120 is joined to the outer peripheral frame 110. In the tunnel soundproof panel 100, a soundproof material 140 is filled in an accommodation space formed by the pair of outer panels 120 and the outer peripheral frame 110.

[0037] The outer peripheral frame 110 is composed of a pair of first outer frames 111 extending in the vertical direction and a pair of second outer frames 112 extending in the horizontal direction. The first outer frames 111 and the second outer frames 112 are joined by welding. In the tunnel soundproof panel 100, the first outer frame 111 is longer than the second outer frame 112.

[0038] As shown in FIG. 2, the outer peripheral frame 110 is reinforced by the first brace 130. This improves the strength of the tunnel soundproof panel 100 and reduces distortion. Therefore, the tunnel soundproof panel 100 has an excellent reuse rate. The first brace 130 is preferably made of steel. By making the first brace 130 out of steel, distortion of the tunnel soundproof panel 100 is further reduced when a soundproofing material other than concrete, such as sand or water, is used as the soundproofing material described below. In addition, by making the first brace 130 out of steel, distortion of the tunnel soundproof panel 100 is further reduced when the tunnel soundproofing panel 100 is suspended by a crane.

[0039] In the tunnel soundproof panel 100, the first brace 130 is fixed to a pair of first outer frames 111. That is, one end of the first brace 130 is fixed to one of the first outer frames 111, and the other end is fixed to the other first outer frame 111. As a result, in the production of the tunnel soundproof panel 100, the installation work of the first brace 130 is concentrated in the first outer frame 111. Therefore, the productivity of the tunnel soundproof panel 100 is improved. The first brace 130 may be fixed to a pair of second outer frames 112. In this case, the installation work of the first brace 130 can be concentrated in the second outer frame 112, so that the productivity of the tunnel soundproof panel 100 is improved.

[0040] The tunnel soundproof panel 100 has first fixing holes 150 penetrating from the front to the back near the first outer frame 111. A total of six first fixing holes 150 are provided on the upper, center, and lower sides in the vertical direction of the tunnel soundproof panel 100. The first fixing holes 150 are used to fix the tunnel soundproof panel 100 to first frames 310, 410, 510 described below.

[0041] The soundproofing material 140 is not particularly limited and may be any known soundproofing material such as concrete, glass wool, sand, soil, water, etc., used to reduce noise during tunnel construction. The type of soundproofing material 140 can be appropriately selected according to the environment of the tunnel construction in which the tunnel soundproofing panel 100 is used. For example, a tunnel soundproofing panel 100 in which concrete is enclosed as the soundproofing material 140 is suitable for blocking low-frequency sounds. Also, a tunnel soundproofing panel 100 in which glass wool is enclosed as the soundproofing material 140 is suitable for absorbing sounds in the noise range. In this way, by changing the type of soundproofing material 140 enclosed in the tunnel soundproofing panel 100, a tunnel soundproofing panel 100 that meets customer needs can be provided.

[0042] (Tunnel Soundproof Panel 200) 2 is a six-view diagram of a tunnel soundproof panel 200 according to an embodiment of the present invention. The tunnel soundproof panel 200 has a shorter vertical length than the tunnel soundproof panel 100. Hereinafter, a description of the same configuration of the tunnel soundproof panel 200 as that of the tunnel soundproof panel 100 will be omitted.

[0043] The tunnel soundproof panel 200 has a flat rectangular parallelepiped shape with a horizontal direction longer than a vertical direction. More specifically, the first outer frame 211 of the tunnel soundproof panel 200 is shorter than the first outer frame 111 of the tunnel soundproof panel 100. Moreover, the first outer frame 211 of the tunnel soundproof panel 200 is shorter than the second outer frame 112. The tunnel soundproof panel 200 is a panel that is applied to a second assembly block 500 described later. Note that the outer peripheral frame 210 of the tunnel soundproof panel 200 is also reinforced by a first brace (not shown) like the tunnel soundproof panel 100.

[0044] [Tunnel soundproof wall assembly unit] Fig. 4 is a schematic front view of a tunnel soundproof-wall assembly unit 300 according to an embodiment of the present invention. Two double-headed arrows in Fig. 4 indicate the height direction and width direction of the tunnel soundproof-wall assembly unit 300, respectively. Fig. 5 is a YY cross-sectional view of the tunnel soundproof-wall assembly unit 300 shown in Fig. 4. Fig. 5 also shows an enlarged view of the area surrounded by a dashed line in the YY cross-sectional view.

[0045] The tunnel soundproof wall assembly unit 300 includes a tunnel soundproof panel 100, a first frame 310, a second frame 320, and a first fixing tool 330. In the tunnel soundproof wall assembly unit 300, three first frames 310 are provided at equal intervals in the width direction. The tunnel soundproof panel 100 is disposed at a position sandwiched between a pair of first frames 310. That is, the tunnel soundproof panel 100 is disposed at a position sandwiched between the first frame 310 on the left side in the width direction and the first frame 310 in the center in the width direction, and at a position sandwiched between the first frame 310 on the right side in the width direction and the first frame 310 in the center in the width direction.

[0046] The upper and lower ends in the height direction of each first frame 310 are connected by a second frame 320. The second frame 320 is made of steel. The second frame 320 suppresses changes in the intervals between the first frames 310 and distortion of the first frames 310. As a result, distortion of the tunnel soundproof panel 100 used in the tunnel soundproof wall assembly unit 300 is suppressed. Therefore, the tunnel soundproof panel 100 used in the tunnel soundproof wall assembly unit 300 has an excellent reuse rate.

[0047] The first frame 310 has a groove 311 into which the tunnel soundproof panel 100 is fitted from the second outer frame 112 side. The tunnel soundproof panel 100 is fitted into the groove 311 from the upper side of the tunnel soundproof wall assembly unit 300. In the tunnel soundproof wall assembly unit 300, an H-shaped steel is used as the first frame 310. The tunnel soundproof wall assembly unit 300 is configured so that a recess formed by a flange and a web of the H-shaped steel becomes the groove 311.

[0048] The groove width GW of the groove portion 311 is configured to be at least twice the width PW of the tunnel soundproof panel 100. The groove portion 311 of the tunnel soundproof wall assembly unit 300 has a groove width GW that allows two tunnel soundproof panels 100 overlapped with their outer plates 120 facing each other to be fitted in. This allows the tunnel soundproof wall assembly unit 300 to meet customer needs regarding noise reduction in tunnel construction by overlapping the tunnel soundproof panels 100. Therefore, the tunnel soundproof wall assembly unit 300 has a better ability to meet customer needs. The groove width GW of the groove portion 311 can also be set to a width that allows three or more tunnel soundproof panels 100 to be overlapped and fitted in.

[0049] The tunnel soundproof panel 100 and the first frame 310 are fixed by the first fastener 330. This allows the first brace 130 of the tunnel soundproof panel 100 to function sufficiently as a brace not only for the tunnel soundproof panel 100 but also for the tunnel soundproof wall assembly unit 300. This improves the strength of the tunnel soundproof wall assembly unit 300.

[0050] In the tunnel soundproof wall assembly unit 300, a bolt and a nut are used as the first fastener 330. A rivet may also be used as the first fastener 330. The first frame 310 has a second fastening hole 340 at a position corresponding to the first fastening hole 150 of the tunnel soundproof panel 100 fitted into the groove 311. After the tunnel soundproof panel 100 is fitted into the groove 311, the first insertion portion 331 of the first fastener 330 is inserted from the second fastening hole 340 into the first fastening hole 150. When the first fastener 330 is a bolt and a nut, the threaded portion of the bolt corresponds to the first insertion portion 331. After the threaded portion of the bolt is inserted from the second fastening hole 340 into the first fastening hole 150, the tunnel soundproof panel 100 and the first frame 310 are fixed by tightening with a nut.

[0051] [Tunnel soundproof wall assembly block] (First assembly block) FIG. 6 is a six-sided view of the frame structure of the first assembly block 400 according to the embodiment of the present invention. That is, FIG. 6 shows six-sided views of the first assembly block 400 before the tunnel soundproof panel 100 is fitted. FIG. 6(a) shows a front view and a rear view, FIG. 6(b) shows a right side view and a left side view, FIG. 6(c) shows a plan view, and FIG. 6(d) shows a bottom view. The frame structure of the first assembly block 400 has the same shape on the front and rear sides, and the right and left sides. Therefore, in FIG. 6(a) and FIG. 6(b), the front view and the rear view, and the right and left side views are shown in one figure. The two double-headed arrows in FIG. 6(a) indicate the height direction and the width direction of the first assembly block 400, respectively. The two double-headed arrows in FIG. 6(b) indicate the height direction and the depth direction of the first assembly block 400, respectively. The two double-headed arrows in FIG. 6(c) and FIG. 6(d) indicate the depth direction and width direction of the first assembly block 400, respectively.

[0052] The first assembly block 400 includes a pair of tunnel soundproof wall assembly units having a first frame 410 and a second frame 420, and a third frame 450 that connects the upper and lower ends of the pair of tunnel soundproof wall assembly units. The first frame 410 forms the sides in the height direction, the second frame 420 forms the sides in the width direction, and the third frame 450 forms the sides in the depth direction. The first assembly block 400 has a rectangular parallelepiped shape.

[0053] The tunnel soundproof wall assembly unit provided in the first assembly block 400 has three first frames 410 consisting of a left first frame 410, a central first frame 410, and a right first frame 410 in the width direction. Each of the three first frames 410 is configured so that one tunnel soundproof panel 100 is fitted in the height direction. The left first frame 410 and the central first frame 410, as well as the central first frame 410 and the right first frame 410 are arranged at equal intervals so that one tunnel soundproof panel 100 can be fitted in each in the width direction.

[0054] The first frame 410 has a groove 411 into which the tunnel soundproof panel 100 is fitted from the second outer frame 112 side. The groove 411 has a groove width GW similar to the groove 311. That is, the first assembly block 400 can fit two overlapping tunnel soundproof panels 100. Therefore, the tunnel soundproof wall assembly unit 300 has a better ability to meet customer needs. Note that the first assembly block 400 uses H-shaped steel as the first frame 410, similar to the tunnel soundproof wall assembly unit 300.

[0055] The left first frame 410 and the right first frame 410 have door mounting portions 480 for mounting doors to a tunnel soundproof wall, which will be described later. Therefore, the tunnel soundproof wall constructed using the first assembly block 400 can flexibly set doors according to customer needs. The first frame 410 also has second fixing holes 440. The second fixing holes 440 are used to fix the tunnel soundproof panel 100 to the first frame 410 by a first fixing tool 430, which will be described later.

[0056] The second frame 420 connects the upper end sides and the lower end sides of the above-mentioned three first frames 410. The second frame 420 is configured to connect the rear side and the front side of the first frames 410 at the upper end sides of the three first frames 410. This ensures an opening for fitting the tunnel soundproof panel 100 into the groove portion 411 of the first frame 410.

[0057] The second frame 420 is configured to connect the ends of the first frames 410 at the lower end sides of the three first frames 410. In addition, the width of the second frame 420 connecting the lower end sides of the first frames 410 is configured to be larger than the width GW of the groove portion 411 of the first frame 410. This prevents the tunnel soundproof panel 100 fitted into the groove portion 411 of the first frame 410 from falling out from the upper side of the first assembly block 400 to the lower side of the first assembly block 400.

[0058] The third frame arranged on the upper side of the first assembly block 400 is fixed to the second frame 420 that connects the inner sides in the depth direction of the upper end sides of the first frames 410. The third frame arranged on the lower side of the first assembly block 400 is fixed to the second frame 420 that connects the lower end sides of the first frames 410. The third frame has third fixing holes 451. The third fixing holes 451 are used to fix the first assembly block 400 and other tunnel soundproof wall assembly blocks in the height direction with third fixing devices in a tunnel soundproof wall described below.

[0059] The first assembly block 400 includes a second brace 460 that provides reinforcement between the pair of tunnel soundproof wall assembly units described above. In the first assembly block 400, the second brace 460 reinforces the first frame 410 and the third frame 450 that are disposed at both ends of the first assembly block 400 in the width direction. This improves the strength of the first assembly block 400. Therefore, distortion of the tunnel soundproof panel 100 used in the first assembly block 400 is further reduced. As a result, the tunnel soundproof panel 100 used in the first assembly block 400 has a higher reuse rate.

[0060] The first frames 410, which are disposed on both ends of the first assembly block 400 in the width direction, have fixing portions 470. The fixing portions 470 are welded to the first frames 410. The fixing portions 470 have fourth fixing holes 471. The fourth fixing holes 471 are used to fix the first assembly block 400 and other tunnel soundproof wall assembly blocks in the width direction with second fixing devices in a tunnel soundproof wall described below.

[0061] Fig. 7 is a perspective view showing how the tunnel soundproof panel 100 is fitted into the frame structure of the first assembly block 400. Fig. 8 is a perspective view of the first assembly block 400 after the fitting of the tunnel soundproof panel 100 in Fig. 7 is completed. Three double-headed arrows shown in Fig. 7 and Fig. 8 respectively indicate the height direction, width direction, and depth direction of the first assembly block 400. Fig. 9 is a plan view of the first assembly block 400 shown in Fig. 8. Two double-headed arrows shown in Fig. 9 respectively indicate the width direction and depth direction of the first assembly block 400.

[0062] FIG. 7 shows how three tunnel soundproofing panels 100 are fitted into the frame structure of the first assembly block 400. As shown in FIG. 9, the groove portion 411 of the first frame 410 has a groove width GW that allows two overlapping tunnel soundproofing panels 100 to be fitted into the groove. This allows the first assembly block 400 to have excellent response capabilities to customer needs regarding noise reduction in tunnel construction. FIG. 7 shows how one tunnel soundproofing panel 100 is fitted into the front side of the first assembly block 400. Also, FIG. 7 shows how two overlapping tunnel soundproofing panels 100 are fitted into the back side of the first assembly block 400.

[0063] The tunnel soundproof panel 100 fitted into the first assembly block 400 is fixed to the first frame 410 by the first fixing device 430. This allows the first brace 130 of the tunnel soundproof panel 100 to function sufficiently as a brace not only for the tunnel soundproof panel 100 but also for the first assembly block 400. This improves the strength of the first assembly block 400.

[0064] The first fastener 430 is a bolt and a nut, similar to the first fastener 330. A rivet may be used as the first fastener 430. The first frame 410 has a second fastening hole 440 at a position corresponding to the first fastening hole 150 of the tunnel soundproof panel 100 fitted into the groove 411. After the tunnel soundproof panel 100 is fitted into the groove 411, the first insertion portion of the first fastener 430 is inserted from the second fastening hole 440 into the first fastening hole 150. When the first fastener 430 is a bolt and a nut, the threaded portion of the bolt corresponds to the first insertion portion. After the threaded portion of the bolt is inserted from the second fastening hole 440 into the first fastening hole 150, the tunnel soundproof panel 100 and the first frame 410 are fixed by tightening with a nut.

[0065] (Second assembly block) FIG. 10 is a six-sided view of the frame structure of the second assembly block 500 according to the embodiment of the present invention. FIG. 10(a) shows a front view and a rear view, FIG. 10(b) shows a right side view and a left side view, FIG. 10(c) shows a plan view, and FIG. 10(d) shows a bottom view. The two double-headed arrows in FIG. 10(a) indicate the height direction and the width direction of the second assembly block 500, respectively. The two double-headed arrows in FIG. 10(b) indicate the height direction and the depth direction of the second assembly block 500, respectively. The two double-headed arrows in FIG. 10(c) and FIG. 10(d) indicate the depth direction and the width direction of the second assembly block 500, respectively. Hereinafter, a description of the same configuration of the second assembly block 500 as that of the first assembly block 400 will be omitted.

[0066] The second assembly block 500 includes a pair of tunnel soundproof wall assembly units having a first frame 510 and a second frame 420, and a third frame 450 connecting the upper and lower ends of the pair of tunnel soundproof wall assembly units. The second assembly block 500 has a frame structure with a shorter length in the height direction than the first assembly block 400. That is, the first frame 510 of the second assembly block 500 is configured to be shorter than the first frame 410 of the first assembly block 400. The tunnel soundproof panel 200 is fitted into the second assembly block 500. The second assembly block 500 has a rectangular parallelepiped shape.

[0067] The tunnel soundproof panel 200 has a width PW similar to the tunnel soundproof panel 100. The groove portion 511 of the first frame 510 has a groove width GW similar to the groove portion 411 of the first frame 410. Therefore, the first frame 510 can fit two overlapping tunnel soundproof panels 200. This allows the second assembly block 500 to have excellent response capabilities to customer needs regarding noise reduction in tunnel construction.

[0068] The tunnel soundproof panel 200 fitted into the second assembly block 500 is fixed to the first frame 510 by a first fastener (not shown). This allows the first brace of the tunnel soundproof panel 200 to function sufficiently as a brace not only for the tunnel soundproof panel 200 but also for the second assembly block 500. This improves the strength of the second assembly block 500. The first fastener used to fasten the tunnel soundproof panel 200 and the first frame 510 is the same as the first fastener 430.

[0069] The second assembly block 500 includes a second brace 560 that reinforces the space between the pair of tunnel soundproof wall assembly units. In the second assembly block 500, the second brace 560 reinforces the first frame 510 and the third frame 450 that are disposed at both ends of the second assembly block 500 in the width direction. This improves the strength of the second assembly block 500. Therefore, distortion of the tunnel soundproof panel 200 used in the second assembly block 500 is further reduced. As a result, the tunnel soundproof panel 200 used in the second assembly block 500 has a higher reuse rate.

[0070] (Third assembly block) FIG. 11 is a six-sided view of the frame structure of the third assembly block 600 according to the embodiment of the present invention. FIG. 11(a) shows a front view and a rear view, FIG. 11(b) shows a right side view and a left side view, FIG. 11(c) shows a plan view, and FIG. 11(d) shows a bottom view. The two double-headed arrows in FIG. 11(a) indicate the height direction and the width direction of the third assembly block 600, respectively. The two double-headed arrows in FIG. 11(b) indicate the height direction and the depth direction of the third assembly block 600, respectively. The two double-headed arrows in FIG. 11(c) and FIG. 11(d) indicate the depth direction and the width direction of the third assembly block 600, respectively. Hereinafter, a description of the same configuration of the third assembly block 600 as that of the first assembly block 400 will be omitted.

[0071] The third assembly block 600 has a frame structure with a shorter length in the width direction than the first assembly block 400. More specifically, the third assembly block 600 is configured to include two first frames 410. That is, the third assembly block 600 is configured so that one tunnel soundproof panel 100 is fitted in the width direction. Therefore, the second frame 620 of the third assembly block 600 is configured to be shorter than the second frame 420 of the first assembly block 400. The third assembly block 600 has a rectangular parallelepiped shape.

[0072] [Soundproofing walls for tunnels] (Soundproof wall for the first tunnel) Fig. 12 is a front view of a first tunnel soundproof wall 700 according to an embodiment of the present invention. Two double-headed arrows in Fig. 12 respectively indicate the height direction and width direction of the first tunnel soundproof wall 700. Fig. 13 is a schematic diagram showing the arrangement of tunnel soundproof wall assembly blocks used in the first tunnel soundproof wall 700 shown in Fig. 12.

[0073] The first tunnel soundproof wall 700 includes a first assembly block 400, a second assembly block 500, a door unit 710, a duct unit 720, a ceiling wall 730, and a side wall 740. The first tunnel soundproof wall 700 is installed on a foundation provided on the ground G in front of the tunnel mouth MH so as to close the mouth MH. The ceiling wall 730 and the side wall 740 are walls that cover the outer periphery of the first tunnel soundproof wall 700. The ceiling wall 730 and the side wall 740 are made of a material having a known soundproofing function that is used in tunnel soundproof walls.

[0074] The first tunnel soundproof wall 700 is configured such that a door unit 710 and a duct unit 720 are arranged in the center in the width direction, and a first assembly block 400 and a second assembly block 500 are arranged on the left and right sides in the width direction. In the first tunnel soundproof wall 700, from the ground G toward the upper side in the height direction, the first to third stages are made up of the first assembly block 400, and the fourth stage is made up of the second assembly block 500.

[0075] The first assembly block 400 and the second assembly block 500 are each fixed to the adjacent assembly block in the height direction by a third fastener (not shown). In the first tunnel soundproof wall 700, a bolt and a nut are used as the third fastener.

[0076] The door unit 710 constitutes a hinged door that serves as an entrance and exit for work vehicles and the like in the first tunnel soundproof wall 700. The door unit 710 is detachably attached to the door mounting portion 480. The door unit 710 has a length in the height direction that is approximately the same as that of the first assembly block 400. As shown in FIG. 12, four door units 710 are used in the first tunnel soundproof wall 700. The door units 710 are made of a material having a known soundproofing function that is used in tunnel soundproof walls.

[0077] Duct unit 720 includes one duct panel 721 having a duct hole DC, four side panels 722, and two upper panels 723. Duct panel 721, side panel 722, and upper panel 723 are configured to be connectable with each other. Side panel 722 has a hole at a position corresponding to a first fixing hole of an adjacent tunnel soundproof wall assembly block, and is fixed to the tunnel soundproof wall assembly block by first fixing device 430.

[0078] (Soundproof wall for the second tunnel)

[0079] 14 is a schematic diagram showing the arrangement of tunnel soundproof wall assembly blocks used in the second tunnel soundproof wall 800. Below, a description of the same configuration of the second tunnel soundproof wall 800 as that of the first tunnel soundproof wall 700 will be omitted.

[0080] The second tunnel soundproof wall 800 is longer in the height direction and width direction than the first tunnel soundproof wall 700. This allows the second tunnel soundproof wall 800 to close a tunnel having a larger tunnel entrance MH than the first tunnel soundproof wall 700.

[0081] The second tunnel soundproof wall 800 has one more row of first assembly blocks 400 in the height direction than the first tunnel soundproof wall 700. Also, the second tunnel soundproof wall 800 has one more row of assembly blocks arranged on the left and right sides in the width direction than the first tunnel soundproof wall 700.

[0082] The first assembly block 400 and the second assembly block 500 are each fixed to the adjacent assembly block in the width direction by a second fastener (not shown). In the second tunnel soundproof wall 800, a bolt and a nut are used as the second fastener.

[0083] (Soundproof wall for the third tunnel) 15 is a schematic diagram showing the arrangement of tunnel soundproof wall assembly blocks used in the third tunnel soundproof wall 900. Below, a description of the same configuration of the third tunnel soundproof wall 900 as that of the first tunnel soundproof wall 700 will be omitted.

[0084] The third tunnel soundproof wall 900 is configured to be longer in the width direction than the first tunnel soundproof wall 700. This allows the third tunnel soundproof wall 900 to close a tunnel having a larger tunnel entrance MH than the first tunnel soundproof wall 700.

[0085] The third tunnel soundproof wall 900 is configured by adding a row of third assembly blocks 600 to the outside in the width direction of the first tunnel soundproof wall 700. More specifically, the third tunnel soundproof wall 900 is configured such that the third assembly blocks 600 are disposed outside the first assembly blocks 400 of the first tunnel soundproof wall 700 in the width direction.

[0086] [Modifications] Modifications of the embodiment will be described below. In the modifications, the same components as those in the above embodiment will be denoted by the same reference numerals and the description thereof will be omitted as appropriate.

[0087] In the tunnel soundproof-wall assembly unit 300, a tunnel soundproof-wall assembly unit using three first frames 310 is shown, but the tunnel soundproof-wall assembly unit of the present invention is not limited to this. By appropriately setting the number of first frames 310 according to the size of the tunnel entrance where the tunnel soundproof-wall assembly unit is to be installed, the width direction length of the tunnel soundproof-wall assembly unit can be changed. This makes it possible to flexibly respond to customer needs.

[0088] In the tunnel soundproof wall assembly unit 300, three tunnel soundproof panels 100 can be arranged in the height direction, but the tunnel soundproof wall assembly unit of the present invention is not limited to this. The height direction length of the tunnel soundproof wall assembly unit can be changed by appropriately setting the height direction length of the first frame 310 according to the size of the tunnel entrance. In addition, by combining the tunnel soundproof panel 100 and the tunnel soundproof panel 200, the height of the tunnel soundproof wall assembly unit can be set more flexibly. This makes it possible to flexibly respond to customer needs.

[0089] In the tunnel soundproof-wall assembly unit 300, the pair of second frames 320 are configured to connect the upper and lower ends of the three first frames 310, but the tunnel soundproof-wall assembly unit of the present invention is not limited to this. For example, the second frames 320 may be configured to connect a pair of first frames 310. In this case, the tunnel soundproof-wall assembly unit 300 has two second frames 320 on the upper side and two second frames 320 on the lower side. Also, the second frame 320 may be provided at the center position in the height direction of the three first frames 310.

[0090] The tunnel soundproof wall of the present invention is not limited to the first tunnel soundproof wall 700, the second tunnel soundproof wall 800, and the third tunnel soundproof wall 900. By combining the first assembly block 400, the second assembly block 500, and the third assembly block 600, it is possible to construct a tunnel soundproof wall that meets various tunnel entrance MHs and customer needs.

[0091] The first tunnel soundproof wall 700, the second tunnel soundproof wall 800, and the third tunnel soundproof wall 900 are configured to include a combination of at least one tunnel soundproof wall assembly block selected from only three types of assembly blocks, the first assembly block 400, the second assembly block 500, and the third assembly block 600. However, the assembly blocks of the present invention are not limited to only the above three types of assembly blocks. It is also possible to add assembly blocks having different dimensions in the height direction, width direction, and depth direction to the above three types of assembly blocks. In this case, a tunnel soundproof panel that can be fitted into the added assembly block is prepared. This makes it possible to flexibly respond to customer needs.

[0092] Here, by combining the above three types of assembly blocks, it is possible to construct tunnel soundproof walls that are suitable for tunnel entrances of various sizes. In other words, it is possible to fully meet customer needs with only the above three types of assembly blocks. In other words, by securing an inventory of the above three types of assembly blocks, the first tunnel soundproof panel 100, and the second tunnel soundproof panel 200, it is possible to efficiently operate the assembly blocks and tunnel soundproof panels. This makes it possible to reduce inventory costs while maintaining a flexible response to customer needs.

[0093] [Additional Notes] In addition, at least a part of the above-mentioned embodiment and various modified examples may be arbitrarily combined with each other. In addition, the embodiment and modified examples disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present disclosure is indicated by the claims, and it is intended to include all modifications within the meaning and scope equivalent to the claims. [Explanation of symbols]

[0094] 100, 200 Soundproofing panels for tunnels 110, 210 Outer frame 111, 211 First outer frame 112 Second outer frame 120, 220 Outer plate 130 First Brace 140 Soundproofing material 150 First fixing hole 300 Soundproof wall assembly unit for tunnels 310, 410, 510 First Frame 311, 411, 511 Groove 320, 420, 620 Second Frame 330, 430 First fixture 331 First Insertion Part 340, 440 Second fixing hole 400 First Assembly Block 450 3rd Frame 451 Third fixing hole 460 Second Brace 470 Fixed part 471 Fourth fixing hole 480 Door mounting part 500 Second Assembly Block 560 Second Brace 600 Third Assembly Block 700 No. 1 Tunnel Soundproof Wall 710 Door unit 720 Duct unit 721 Duct Panel 722 Side Panel 723 Upper Panel 730 Ceiling Wall 740 side wall 800 Noise-proof wall for the second tunnel 900 Soundproof wall for the third tunnel

Claims

1. A soundproofing panel used in a tunnel soundproof wall installed in front of a tunnel entrance, A rectangular outer frame; A pair of rectangular outer panels arranged on the front and rear; A first brace that reinforces the outer perimeter frame; A soundproofing panel for a tunnel comprising: a soundproofing material sealed in an accommodation space formed by the pair of outer panels and the outer peripheral frame.

2. The outer peripheral frame includes a pair of first outer frames extending in a vertical direction and a pair of second outer frames extending in a horizontal direction, 2. The tunnel soundproofing panel according to claim 1, wherein one end of each of the first braces is fixed to one of the first outer frames and the other end is fixed to the other of the first outer frames.

3. The tunnel soundproofing panel according to claim 1, A plurality of first frames that form grooves into which the tunnel soundproof panel is fitted from the second outer frame side; a second frame connecting the plurality of first frames; A soundproof wall assembly unit for a tunnel.

4. 4. The tunnel soundproof wall assembly unit according to claim 3, wherein the groove portion has a groove width that allows a plurality of the tunnel soundproof panels to be fitted therein.

5. 4. The tunnel soundproof wall assembly unit according to claim 3, further comprising a first fastener for fastening said tunnel soundproof panel and said first frame.

6. The tunnel soundproofing panel has a first fixing hole penetrating from the front surface to the back surface of the tunnel soundproofing panel in the vicinity of the first outer frame, The first frame has a second fixing hole at a position corresponding to the first fixing hole of the tunnel soundproof panel fitted in the groove, The first fixing device has a first insertion portion for insertion into the first fixing hole and the second fixing hole.

6. A tunnel soundproof wall assembly unit according to claim 5.

7. A pair of tunnel soundproof wall assembly units according to claim 3; a third frame connecting upper and lower end sides of the pair of tunnel soundproof wall assembly units; A soundproof wall assembly block for a tunnel comprising:

8. The tunnel soundproofing panel includes a first tunnel soundproofing panel and a second tunnel soundproofing panel, the first outer frame having different lengths in the longitudinal direction, The vertical length of the first tunnel soundproofing panel is longer than the vertical length of the second tunnel soundproofing panel, The tunnel soundproof wall assembly block comprises: A first assembly block including the tunnel soundproof wall assembly unit configured to fit two of the first tunnel soundproof panels in the width direction; A second assembly block including the tunnel soundproof wall assembly unit configured to fit two of the second tunnel soundproof panels in the width direction; a third assembly block including a tunnel soundproof wall assembly unit configured to fit one of the first tunnel soundproof panels in a width direction; 8. The soundproof wall assembly block for a tunnel according to claim 7, comprising:

9. 9. The tunnel soundproof wall assembly block according to claim 8, wherein the first frames arranged on both ends in the width direction have door mounting portions for mounting a door.

10. 8. The tunnel soundproof wall assembly block according to claim 7, further comprising a second brace for reinforcing a space between the pair of tunnel soundproof wall assembly units.

11. A plurality of tunnel soundproof wall assembly blocks according to any one of claims 7 to 10; A second fastener for fastening the plurality of tunnel soundproof wall assembly blocks in a width direction; a third fastener for fastening the plurality of tunnel soundproof wall assembly blocks in a height direction; A soundproof wall for a tunnel.

12. The tunnel soundproof wall assembly block is a plurality of tunnel soundproof wall assembly blocks according to any one of claims 8 to 10, 12. The soundproof wall for a tunnel according to claim 11, comprising at least one of the soundproof wall assembly blocks for a tunnel selected from only three types of a first assembly block, a second assembly block, and a third assembly block.

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