JP4709305B2 - Wall structure - Google Patents

Description

  The present invention belongs to the technical field of structures used to construct walls along railways, roads, etc., for example to block noise from vehicles and the like.

  Patent Document 1 discloses a wall in which a panel is disposed between groove-type support columns erected at a predetermined interval, and each end portion of the panel is inserted between opposing flange portions of each groove-type support column. A structure is disclosed.

  Patent Document 2 is composed of a planar sound insulation part and an FRP stiffener integrally formed on the back surface of the sound insulation part, and is joined to the housing through attachment holes and attachment members provided in the lower part of the stiffener. An FRP sound barrier is disclosed.

  Patent Document 3 discloses a soundproof wall including a soundproof panel portion, a mounting portion, and a stiffener for connecting them.

JP 2000-257027 A JP 2005-213791 A JP 2007-239319 A

  As shown in FIG. 20, in the FRP soundproof wall 50 of Patent Document 2, the stiffener 52 protrudes greatly from the planar sound insulating portion 51 toward the front in the depth direction. That is, the stiffener 52 greatly extends from the neutral surface N of the FRP soundproof wall 50 to the near side in the depth direction when the sound insulating portion 51 receives a bending moment around an axis extending in the width direction due to wind pressure or the like. Accordingly, when such a bending moment is applied, an excessive bending stress is applied to the bolts that are passed through the mounting hole 53 and screwed into the housing through the mounting hole 53. Therefore, in the design of the FRP soundproof wall 50, it is necessary to consider increasing the strength of the stiffener 52 and the mounting member as much as possible and increasing the size of the bolt. The wind pressure is received, for example, by wind generated by the passage of a vehicle or the weather.

  Also in the soundproof wall 60 of Patent Document 3, as shown in the explanatory view shown in FIG. 21, the stiffener 63 protrudes greatly from the planar soundproof panel 61 toward the front in the depth direction, and this soundproof panel 61 Is greatly extended from the neutral surface N of the soundproof wall 60 to the near side in the depth direction when receiving a bending moment about the axis extending in the width direction due to wind pressure or the like. Therefore, an excessive bending stress is applied to the bolt that is passed through the mounting hole 64 and screwed into the building frame by the bending moment, and the stiffener 63 and the mounting portion. It is necessary to increase the strength of 62 as much as possible and increase the size of the bolt.

  Both the FRP soundproof wall of Patent Document 2 and the soundproof wall of Patent Document 3 have dimensional restrictions even when reinforcing stiffeners or mounting members or mounting portions, and the soundproof wall of Patent Document 3 is formed of FRP. In some cases, it is substantially impossible to continuously arrange the fibers from the stiffener to the mounting portion, and there is a problem that reinforcement is difficult.

  In both the FRP soundproof wall of Patent Document 2 and the soundproof wall of Patent Document 3, noise is prevented from leaking from the gap by overlapping the side edges of the walls of the same structure adjacent in the width direction. There is a longing for improvement. Although it is conceivable to put packing in the gap, there is a drawback that sound leaks from the gap when adjacent walls move relatively due to wind pressure.

  In both the FRP soundproof wall of Patent Document 2 and the soundproof wall of Patent Document 3, the stiffener protrudes greatly from the sound insulation portion or the soundproof panel portion toward the front in the depth direction, so that the change in wind pressure is amplified by this stiffener and becomes noise. There is a problem of becoming. In addition, there is a drawback that it is difficult to see signs or the like arranged along the railway because the field of view is hindered by this stiffener.

  An object of the present invention is to receive a bending moment around an axis extending in the width direction by accommodating at least a part of the mounting portion in a structure higher than the mounting portion when viewed from the height direction. The neutral surface of the wall structure is placed in or near the structure on the side higher than the mounting portion, and the bottom plate constituting the mounting portion is located near the neutral surface along the railway or the like. As it is attached to the provided housing, the bending stress applied to the bottom plate and the means for attaching the bottom plate to the housing and the load applied to the housing are reduced, and since it is lightweight and flat, it is difficult to produce noise and has a field of view. An object of the present invention is to provide a wall structure that is unobstructed and has improved visibility of a sign. Another object of the present invention is to provide a wall structure in which noise is less likely to leak from between adjacent wall structures of the same structure in the width direction.

  The wall structure of the present invention includes a first plate arranged such that the plate thickness direction is substantially the depth direction when the depth direction, the width direction, and the height direction orthogonal to each other are taken. On the far side in the depth direction of the plate, there is a plate thickness direction between the first plate and the second plate, and a second plate disposed so as to face the first plate so that the plate thickness direction is substantially the depth direction. Arranged at intervals in the width direction so as to be substantially in the width direction, each extending substantially in the height direction, the end on the near side in the depth direction is integrally provided on the first plate, and A plurality of inner ribs whose end portions on the side are integrally provided on the second plate, and the first plate, the second plate, and the inner rib are low in the height direction so that the plate thickness direction is substantially the height direction. Is arranged on the side, and the end on the back side in the depth direction is provided integrally with the end on the low side in the height direction of the second plate, and is in front of the depth direction. Is provided integrally with the lower end of the first plate in the height direction, and the portion between both ends is provided integrally with the lower end of each inner rib in the height direction. A bottom plate that is a lower side portion in the height direction of the second plate, and two lower side portions in the height direction of two adjacent inner ribs among the plurality of inner ribs. The side plate and a partial bottom plate that is a portion between the two side plates in the bottom plate constitute a concave mounting portion that is opened to the front in the depth direction.

  This wall structure is arranged in the width direction on the frame provided along the railroad, etc., and the partial bottom plate of the mounting portion of each wall structure is attached to the frame by bolts and nuts or other mounting means. For example, walls can be created along railroads. In that case, the mounting portion is a back plate that is a part of the second plate, two side plates that are a part of the inner ribs disposed between the first plate and the second plate, and two sides of the bottom plate. Since it is constituted by a partial bottom plate that is a portion between the plates, when viewed from the height direction (in the front-rear (depth) direction), at least a part of the mounting portion fits in the structure on the side higher than the mounting portion. When the bending moment about the axis extending in the width direction is received, the neutral surface of the wall structure is located in or near the structure on the side higher than the mounting portion. Therefore, the bending stress applied to the bottom plate and the attaching means and the load applied to the housing are reduced. Accordingly, it is not necessary to increase the strength of each part of the wall structure or strengthen the attachment means, and the wall structure is light in combination with the hollow structure. For example, the thickness of the bottom plate can be reduced. Moreover, since the surface of the wall structure is formed by the first plate, the second plate, etc., the surface of the wall structure becomes flat, and the wind pressure on the surface of the wall structure does not easily change, resulting in noise. It becomes difficult to come out, and the visibility of the sign is improved without obstructing the visual field. (Note that in the “front-rear direction”, the outer surface of the first plate is the front side, and the outer surface of the second plate is the back side. The front surface is the surface facing the noise generating source, for example, in the soundproof wall. .)

  In the wall structure of the present invention, in the wall structure, the partial bottom plate may be provided with a mounting hole penetrating substantially in the height direction.

  The mounting means is not limited to bolts and nuts, but if the mounting holes are provided in the partial bottom plate in this way, the bolts rising from the housing are passed through the mounting holes and fastened with the nuts, and the wall structure is attached to the housing. Good workability.

  In the wall structure according to the present invention, the wall structure in which the mounting hole is provided as described above is a depth direction with respect to the neutral plane when the mounting hole receives a bending moment about an axis extending in the width direction. It may be provided separately on the back side and the near side.

  In this way, it is easy to distribute the mounting holes near the neutral plane, and when the first plate or the second plate receives a bending moment about the axis extending in the width direction due to wind pressure or the like, the bottom plate or the mounting plate is attached. The bending stress applied to the means is further reduced, and there is no need to increase the strength of each part of the wall structure or strengthen the attachment means, and the wall structure becomes lighter in combination with the hollow structure.

  The wall structure of the present invention in the above-mentioned wall structure is inclined so as to go from the lower part of the first plate in the height direction toward the back side in the depth direction as it goes to the lower side in the height direction. The inclined plate may be branched, and the lower end portion of the inclined plate in the height direction may be provided integrally with the higher end portion of the back plate in the height direction.

  If it does in this way, it will become easy to do the operation | work done from diagonally upward toward an attaching part, and workability | operativity will improve.

  In the wall structure of the present invention, the length of the bottom plate in the depth direction is the second from the surface on the near side in the depth direction of the first plate on the side higher in the height direction than the mounting portion. It may be not less than 1 and not more than 3 times the length up to the surface in the depth direction of the plate.

  The wall structure of the present invention may be such that, in the above wall structure, at least a part of each inner rib, the length in the depth direction decreases as the height decreases.

  In this way, since the strength of the mounting portion is improved without increasing the length in the depth direction of the structure on the high side of the wall structure, the bending stress applied to the bottom plate and the mounting means can be further reduced, There is no need to increase the strength of each part of the wall structure or strengthen the attachment means, and the wall structure is further lightened in combination with the hollow structure.

  In the wall structure of the present invention, the weight per unit area obtained by dividing the weight by the area of the first plate or the second plate in the depth direction in the above wall structure may be 17 kg / m 2 or more. .

  The wall structure of the present invention is the above wall structure, wherein at least one of the first plate, the second plate, the inner rib, and the bottom plate is formed of FRP, or an outer layer formed of FRP and the outer layer. It may be a composite having an inner layer formed of an inorganic filler inside the outer layer. Here, FRP is a fiber reinforced plastic.

  If it does in this way, the weather resistance of the structure for walls, and corrosion resistance will improve by FRP. In addition, when the inner layer is provided, the mass per unit area of the wall structure when viewed in the depth direction is increased, so that the sound insulation function is improved and the cross-sectional secondary moment can be improved, and bending stress can be improved. Is reduced.

  The wall structure according to the present invention is the above-described wall structure, wherein one end of the first plate or the second plate extending in the height direction on both sides in the width direction has a depth in the depth direction. Side ribs protruding from the front side are provided extending substantially in the height direction, and grooves recessed from the back in the depth direction to the front side are provided extending substantially in the height direction at the other end, and the side ribs are provided in the width direction. The groove of the wall structure of the same structure arranged adjacent to the side, and the groove is a side rib of the wall structure of the same structure arranged adjacent to the other side in the width direction. You may be comprised so that it can fit.

  In this way, since the fitting portion exhibits a labyrinth effect, noise leakage is reduced as compared with the case where the side ends of the walls of the same structure adjacent in the width direction are overlapped as in the prior art.

  The wall structure of the present invention is the above-described wall structure, in which the second plate is recessed from the back in the depth direction toward the front and substantially in the height direction at the ends extending in the height direction on both sides in the width direction. When the odd-shaped groove extending inward from the opening is provided extending substantially in the height direction and the wall structure having the same structure is disposed adjacent to one side or the other side in the width direction, both sides in the width direction are provided. The side ends of the connecting member provided with the side ends of the shapes corresponding to the irregular grooves may be respectively fitted to the adjacent irregular grooves.

  In this way, since the fitting portion exhibits a labyrinth effect, noise leakage is reduced as compared with the case where the side ends of the walls of the same structure adjacent in the width direction are overlapped as in the prior art.

  The wall structure according to the present invention receives a bending moment about an axis extending in the width direction by accommodating at least a part of the mounting portion in a structure higher than the mounting portion when viewed from the height direction. Since the neutral surface of the wall structure is placed in the structure on the side higher than the mounting portion or positioned in the vicinity thereof, the bending stress applied to the bottom plate and the mounting means and the load applied to the housing are reduced. In addition, since it is lightweight and flat, noise is hardly generated and the visual field is not obstructed and the visibility of the sign is improved. Therefore, it is suitable as a wall structure for constructing a wall along a railroad or the like. Since the mounting portion is an integrated structure using the second plate, two adjacent inner ribs and a part of the bottom plate, the mounting portion is solid and can withstand a large load because there is no discontinuous connection. In addition, by increasing the thickness of the inner rib of the mounting part as necessary, the strength of the mounting part can be easily increased while avoiding a significant increase in the weight of the wall structure. A structure can be embodied.

  When the means for attaching the wall structure according to the present invention is used as an attachment hole, the workability of attaching the wall structure to the housing is improved.

  When the mounting holes of the wall structure according to the present invention are provided separately on the deep side and the near side in the depth direction with respect to the neutral surface, the bending stress applied to the bottom plate and the mounting means is further reduced, It is not necessary to increase the strength of each part of the structure or strengthen the attachment means, and the wall structure is further lightened in combination with the hollow structure.

  When the inclined plate is provided in the wall structure of the present invention, the work performed from obliquely upward toward the mounting portion is facilitated, and workability is improved.

  When the length in the depth direction of each of the inner ribs of the wall structure of the present invention is increased as it decreases along the height direction, the bending stress applied to the bottom plate and the mounting means is further reduced. Therefore, it is not necessary to increase the strength of each part of the wall structure or strengthen the attachment means, and the wall structure is further reduced in light of the hollow structure.

  When at least one of the first plate, the second plate, the inner rib, and the bottom plate of the wall structure of the present invention is formed by FRP or is a composite, the weather resistance of the wall structure by FRP When the inner layer is provided, the sound insulation function is improved and the bending stress can be reduced.

  When side ribs and grooves are provided on the first plate or the second plate of the wall structure of the present invention, noise leakage is caused by the labyrinth effect of the fitting portion with the wall structure of the same structure arranged adjacent to the first plate or the second plate. Can be reduced.

  The second plate of the wall structure of the present invention is provided with a deformed groove, and both ends of the connecting member are fitted into the deformed groove and the deformed groove of the wall structure of the same structure arranged adjacent to each other. Sometimes, leakage of noise can be reduced by the labyrinth effect of the fitting portion.

It is a perspective view which shows 1st Embodiment of the structure for walls of this invention. It is sectional drawing when the said structure for walls is cut in the surface which faced the height direction in the height direction higher side than an attaching part. It is sectional drawing when the said structure for walls is cut in the surface which faced the width direction in the attaching part. It is sectional drawing when the said structure for walls is cut in the surface which faced the depth direction between the 1st board and the 2nd board. It is sectional drawing when the said structure for walls is cut in the surface which faced the height direction in the attaching part. It is an enlarged view when the said wall structure and the wall structure of the same structure arrange | positioned adjacent to the one side of the width direction are seen from a height direction. It is a perspective view which shows the construction example of 1st Embodiment of the structure for walls of this invention. It is sectional drawing when the modification of the said structure for walls is cut in the surface which faced the height direction in the attaching part. It is an expanded sectional view when the 2nd board of the modification of the said structure for walls is cut in the field which turned to the height direction. It is an expanded sectional view when the bottom board of the modification of the said structure for walls is cut in the surface which faced the depth direction. It is a perspective view which shows 2nd Embodiment of the structure for walls of this invention. It is an enlarged view when the 3rd Embodiment of the wall structure of this invention and the wall structure of the same structure arrange | positioned adjacent to the one side of the width direction are seen from a height direction. It is an enlarged view when the 4th Embodiment of the structure for walls of this invention and the structure for walls of the same structure arrange | positioned adjacent to the one side of the width direction are seen from the height direction. It is a perspective view which shows the construction example of the modification of 1st Embodiment of the structure for walls of this invention. It is an expanded sectional view showing a modification of a 1st embodiment of a structure for walls of the present invention. It is a perspective view which shows 5th Embodiment of the structure for walls of this invention. It is sectional drawing when 5th Embodiment of the said structure for walls is cut in the surface which faced the height direction in the side higher in a height direction than an attachment part. It is sectional drawing when the 6th Embodiment of the said structure for walls is cut in the surface which faced the height direction in the side higher in a height direction than an attachment part. It is sectional drawing when 7th Embodiment of the said structure for walls is cut in the surface which faced the height direction in the height direction higher side than an attaching part. It is sectional drawing when the FRP soundproof wall of patent document 2 is cut in the surface which faced the height direction. It is sectional drawing when the soundproof wall of patent document 3 is cut in the surface which faced the height direction.

  Embodiments of the present invention will be described below. 1 to 5 show a first embodiment of a wall structure of the present invention. For convenience of description, a depth direction (Y-axis direction), a width direction (X-axis direction), and a height direction (Z-axis direction) that are orthogonal to each other are set. In the case of the first embodiment, as illustrated in FIG. 3, the left-right direction in FIG. 3 is the depth direction, the left side in FIG. 3 is the back side, and the right side in FIG. Further, the direction perpendicular to the paper surface of FIG. 3 is the width direction. 3 is the height direction, the upper side of FIG. 3 is the higher side, and the lower side of FIG. 3 is the lower side.

  The wall structure 100 includes a first plate 110, a second plate 120, a plurality of inner ribs 130, and a bottom plate 140. The first plate 110 is a plate-like member formed in a substantially rectangular shape when viewed from the plate thickness direction, and is arranged so that the plate thickness direction of the first plate 110 substantially matches the depth direction. The plate thickness direction is a direction in which the length along the direction is specified as the plate thickness. The second plate 120 is a plate-like member formed in a substantially rectangular shape when viewed from the plate thickness direction, and the thickness direction of the second plate 120 is substantially on the back side in the depth direction of the first plate 110. The first plate 110 is disposed to face the depth direction. The plurality of inner ribs 130 are plate-like members formed in a substantially rectangular shape when viewed from the plate thickness direction, and the thickness of the inner ribs 130 is between the first plate 110 and the second plate 120. They are arranged at intervals in the width direction so that the directions substantially coincide with the width direction. Each of the plurality of inner ribs 130 extends substantially in the height direction, and an end on the near side in the depth direction is provided integrally with the first plate 110, and an end on the far side in the depth direction. The part is provided integrally with the second plate 120. The bottom plate 140 is a plate-like member formed in a substantially rectangular shape when viewed from the plate thickness direction, and the first plate 110 and the second plate are arranged so that the plate thickness direction of the bottom plate 140 substantially coincides with the height direction. 120 and the inner rib 130 on the lower side in the height direction. An end of the bottom plate 140 on the back side in the depth direction is integrally provided on an end of the second plate 120 on a low side in the height direction, and an end on the near side in the depth direction of the bottom plate 140 is provided in the first direction. The one plate 110 is integrally provided at the lower end portion in the height direction, and the portion between the end portion on the back side in the depth direction and the end portion on the near side of the bottom plate 140 is formed on the inner rib 130. They are integrally provided at the end portions on the lower side in the height direction. Therefore, the wall structure 100 forms a hollow box structure. A top plate 150 is provided as necessary. The top plate 150 is a plate-like member formed in a substantially rectangular shape when viewed from the thickness direction, and the thickness direction of the top plate 150 is substantially high. It is arranged so as to coincide with the vertical direction. The end of the top plate 150 in the depth direction is integrally provided on the end of the second plate 120 in the height direction, and the end of the top plate 150 on the near side in the depth direction is integrally provided. The first plate 110 is integrally provided at an end portion on the higher side in the height direction, and a portion between the end portion on the far side in the depth direction and the end portion on the near side of the top plate 150 is the inner side. The ribs 130 are integrally provided at the end portions on the high side in the height direction.

  A portion of the second plate 120 on the lower side in the height direction is a back plate 121. Further, among the plurality of inner ribs 130, the portions on the lower side in the height direction of the two adjacent inner ribs 130 are respectively side plates 131. A concave shape opened to the front in the depth direction by the back plate 121, two side plates 131 facing each other, and a partial bottom plate 141 which is a portion of the bottom plate 140 between the two side plates 131. A mounting portion 160 is configured. In other words, the mounting portion 160 is configured by the second plate 120, the two adjacent inner ribs 130 facing each other, and a part of the bottom plate 140. An opening is formed in a portion of the first plate 110 corresponding to the mounting portion 160. Here, the attachment portions 160 are provided at two locations separated in the width direction of the wall structure 100, but the attachment portions may be provided at one location or at three or more locations.

  The partial bottom plate 141 is provided with a mounting hole 142 penetrating substantially in the height direction. This is a configuration for when a bolt 310 rising from a mounting target casing and a nut 500 fitted thereto are used as mounting means for mounting the wall structure of the present invention to the casing. When the mounting holes 142 are embedded in the casing 300 and fitted into the bolts 310 rising from the casing 300, and the nuts 500 are fitted into the bolts 310 coming out of the partial bottom plate 141 and tightened with an appropriate force, the wall structure 100 is assembled. Mounted on. The attachment means is not limited to bolts and nuts according to this embodiment, and other known means for attaching the wall structure to the housing may be used. In this embodiment, two attachment holes 142 are provided in one attachment portion 160, but the number of attachment holes provided in the attachment portion may be one or three or more.

  When the wall structure 100 is subjected to a bending moment about a certain axis, a neutral plane N is formed. The neutral surface N is a surface formed by a portion that does not expand and contract in the wall structure 100 when receiving a bending moment. When the wall structure 100 is subjected to a bending moment about an axis extending in the width direction, a neutral surface N is formed. When the wall structure 100 is sectioned along a surface facing the height direction, as shown in FIG. 2 and FIG. Thus, the cross section of the neutral plane N is recognized as a neutral axis. As shown in FIG. 2 and FIG. 5, the mounting holes 142 are provided so as to be distributed with respect to the neutral surface N on the far side and the near side in the depth direction. In this embodiment, the line connecting the mounting holes 142 thus distributed is substantially orthogonal to the neutral axis. However, as shown in FIG. The mounting holes 142 may be arranged in a staggered manner so that a line connecting the mounting holes 142 distributed to the front side crosses the neutral axis obliquely instead of orthogonally.

  An inclined plate 111 that is inclined from the portion on the lower side of the first plate 110 toward the lower side in the depth direction is branched from the lower side in the height direction. The end of the inclined plate 111 on the lower side in the height direction is provided integrally with the end of the back plate 121 on the higher side in the height direction.

  As shown in FIG. 2, the length L1 of the bottom plate 140 in the depth direction is from the surface on the near side in the depth direction of the first plate 110 on the side higher in the height direction than the mounting portion 160. It is longer than the length L2 up to the surface in the depth direction. The L1 is preferably 1 to 3 times the L2. In this way, the neutral plane N that is the bending center of the wall structure 100 can be set within the range of the length in the depth direction of the portion excluding the mounting portion 160 in the wall structure 100, Accordingly, the mounting hole 142 can be disposed in the vicinity of the neutral plane N, that is, near the center of bending, and a large eccentric load due to misalignment does not occur, and the mounting means such as the bottom plate 140, the bolt 310, and the nut 500 is applied. This is because the bending stress and the load applied to the housing can be reduced.

  In the portion on the lower side in the height direction, which is a part of each inner rib 130, the length in the depth direction increases as the length decreases along the height direction. Correspondingly, the lower portion of the first plate 110 in the height direction is inclined so as to move away from the second plate 120 as the height decreases along the height direction. In this embodiment, the lower portion in the height direction is a portion corresponding to the attachment portion 160. However, the lower portion in the height direction may be set regardless of the attachment portion. Further, a part of each inner rib may be a lower portion in the height direction, a higher portion in the height direction, or a middle portion in the height direction. May be. Since the bending moment applied to the inner rib 130 increases as it comes closer to the bottom plate 140, this is beneficial for suppressing bending stress, and the wall structure of the present invention has a particularly high height. It is suitable when used as a high soundproof wall. Such a configuration can be easily realized by forming the inner rib 130 with FRP or a composite body to be described later.

  The weight per unit area obtained by dividing the weight by the area of the first plate 110 or the second plate 120 in the depth direction is set to 17 kg / m 2 or more. This is to obtain the minimum necessary sound insulation performance. In this case, as described later, at least one of the first plate 110, the second plate 120, the inner rib 130, the bottom plate 140, the inclined plate 111, and the top plate 150 is made into a composite. Is useful for ensuring the weight per unit area. In that case, the bending stress is borne by the outer layer formed by FRP, and since the bending stress generated near the center of bending is reduced, the inner layer is formed of an inorganic filler that does not require relatively high strength. Accordingly, at least one of the first plate and the second plate is provided with an outer layer formed of FRP and an inner layer formed of an inorganic filler inside the outer layer as illustrated in FIG. It is beneficial to use a complex. In that case, it arrange | positions so that all may have an inner layer located in the inner rib side.

  In the wall structure of the present invention, at least one of the first plate, the second plate, the inner rib, the bottom plate, the inclined plate, and the top plate is formed of FRP or formed of FRP. A composite body including an outer layer and an inner layer formed of an inorganic filler inside the outer layer. In the case of such a composite, the outer layer and the inner layer may be provided one by one as shown in FIG. 9, or the outer layer may be provided on both sides of the inner layer as shown in FIG. The outer layer and the inner layer may be provided in other ways. In this embodiment, the first plate 110, the second plate 120, the inner rib 130, the bottom plate 140, the inclined plate 111, and the top plate 150 are all FRP. In addition, the first plate, the second plate, the inner rib, the bottom plate, the inclined plate, and the top plate do not have to be unified with the same configuration, and one of them is set to FRP and one of the other is set. The composite may be used. FIG. 9 shows an example of the second plate 120 in one of such various modifications. The second plate 120 is a composite including an outer layer 122 formed of FRP and an inner layer 123 formed of an inorganic filler inside the outer layer 122. FIG. 10 shows a bottom plate 140 in one of such various modifications. The bottom plate 140 is a composite including two outer layers 143 formed of FRP and an inner layer 144 formed of an inorganic filler between the outer layers 143. These configurations of FIGS. 9 and 10 are merely examples, and thereby the first plate, the second plate, the inner rib, the bottom plate, the inclined plate, and the wall plate of the present invention. The structure of the top board is not limitedly interpreted. None of the first plate, the second plate, the inner rib, the bottom plate, the inclined plate, and the top plate may be formed of a material other than the FRP or the composite. The configurations of the first plate, the second plate, the inner rib, the bottom plate, the inclined plate, and the top plate are appropriately selected according to the type and size of the load applied to these members.

  Further, in the case where the wall structure is attached to the housing with almost cantilever support as in the wall structure of the present invention, the bending stress generated in the wall structure due to wind pressure or the like is greatest at the bottom plate portion of the attachment portion. In that case, the bending stress can be reduced by forming the bottom plate by FRP and increasing the length in the height direction, but this is not economical. However, making the bottom plate into the composite is beneficial to increase the strength against bending stress. In that case, the bending stress is borne by the outer layer formed by FRP, and the inner layer near the center in the thickness direction of the plate also generates less bending stress. Therefore, the inner layer is made of an inorganic filler that does not require relatively high strength. Form. Therefore, as illustrated in FIG. 10, a composite including two outer layers 143 formed of FRP and an inner layer 144 formed of an inorganic filler between these outer layers 143 is formed on the bottom plate. It is beneficial to use.

  Of the end portions of the second plate 120 extending in the height direction on both sides in the width direction, side ribs 181 projecting from the back in the depth direction toward the front are provided at the end portions on one side so as to extend in the height direction. In the other end, a groove 182 that is recessed from the back in the depth direction to the front is provided so as to extend substantially in the height direction. The side ribs 181 and the grooves 182 are each formed in a U shape or a U shape as viewed in the height direction. And as shown in FIG. 6, the said side rib 181 can be fitted with the said groove | channel 182 of the wall structure 100 of the same structure arrange | positioned adjacent to the one side of the width direction, and the said groove | channel 182 The side rib 181 of the wall structure 100 having the same structure disposed adjacent to the other side in the width direction can be fitted. Such side ribs and grooves may be provided in the first plate.

  Here, as the reinforcing fiber of FRP or outer layer FRP for forming the first plate, the second plate, the inner rib, the bottom plate, the inclined plate, or the top plate, for example, glass fiber, aramid fiber Carbon fibers can be used alone or in combination. By including the carbon fiber, the specific strength and the specific rigidity are improved, whereby the weight of the molded body can be further reduced. In addition, as a form of a reinforced fiber, the base material which combined suitably the short fiber and mat | matte whose fiber length is 1-3 mm, the cloth | cross, strand, etc. which consist of continuous fibers is illustrated, for example. The matrix resin used for FRP is not particularly limited. For example, thermosetting resins such as epoxy resin, unsaturated polyester resin, vinyl ester resin, polyethylene, polypropylene, nylon, ABS (acrylonitrile / butadiene / styrene). ), PEEK (poly-ether-ether-ketone), polyimide, and other thermoplastic resins can be used. In addition, as a molding method for forming the FRP for forming the first plate, the second plate, the inner rib, the bottom plate, the inclined plate, or the top plate, or the FRP of the outer layer, a matrix resin can be used or reinforced. Depending on the fiber form, various methods such as vacuum, blow, stamping, BMC (bulk molding compound), SMC (sheet molding compound), transfer molding, RTM (resin transfer molding), hand layup molding, etc. Can be easily formed. In addition to the powder for increasing the viscosity (for example, calcium carbonate and sand), the filler includes a layered compound (for example, mica, molybdenum disulfide, boron nitride, etc.), an acicular compound (for example, zonotlite, By adding potassium titanate, carbon fiber, etc.), granular or sheet-like compounds (eg, ferrite, talc, clay, etc.), conversion to frictional heat is performed by the mutual movement of inorganic crystals or between inorganic and matrix. Filling the filler (filler) increases the elastic modulus and density, increases the resistance to vibration, and improves the damping characteristics. Therefore, such a wall structure is suitable for viaducts and roads during train operation. If it is used as a bridge girder, vibration can be reduced. Further, for example, aluminum hydroxide, bromine, inorganic powder, and the like can be added to the filler to improve the flame retardancy. Therefore, such a wall structure is suitable for railroad railings due to its rail flame retardance. It is suitable for constructing.

  Therefore, as shown in FIG. 7, the wall structures 100 are arranged in the width direction on a frame 300 provided along a railroad or the like, and the partial bottom plate 141 of the mounting portion 160 of each wall structure 100 is bolted. If it attaches to the said housing 300 by attachment means, such as 310 and the nut 500, a wall will be formed along the said railroad. In this case, the mounting portion 160 is a part of the back plate 121 that is a part of the second plate 120 and a part of the inner rib 130 that is disposed between the first plate 110 and the second plate 120. Since it is configured by two side plates 131 and a partial bottom plate 141 which is a portion between the two side plates 131 in the bottom plate 140, at least a part of the mounting portion 160 is a mounting portion when viewed from the height direction. The structure on the side where the neutral surface N of the wall structure 100 is higher than the mounting portion 160 when it receives a bending moment about an axis extending in the width direction and is accommodated in the structure on the side higher than 160. It fits in or is close to it. Therefore, the bending stress applied to the mounting means such as the bottom plate 140, the bolt 310, and the nut 500, and the load applied to the housing are reduced. Accordingly, it is not necessary to increase the strength of each part of the wall structure or strengthen the attachment means such as the bolt 310 and the nut 500, and the wall structure 100 is light in combination with the hollow structure of the wall structure 100. become. In addition, since the surface of the wall structure 100 is formed by the first plate 110 and the second plate 120, the surface of the wall structure 100 becomes flat, and the wind pressure corresponding to the surface of the wall structure 100 changes. It becomes difficult to make noise, and the visibility of the sign is improved without obstructing the field of view.

  The means for attaching the wall structure of the present invention is not limited to bolts and nuts. Among such various embodiments, in the case of the wall structure 100 of the embodiment, the partial bottom plate 141 in the mounting portion 160 is provided with a mounting hole 142 penetrating substantially in the height direction. . In this way, if the bolt 310 rising from the housing 300 is passed through the mounting hole 142 and the nut 500 is fitted into the bolt 310 and tightened, the workability of mounting the wall structure 100 to the housing 300 is improved. Is good.

  When providing an attachment hole in the partial bottom plate in the attachment part of the wall structure of the present invention, the arrangement of the attachment hole is not limited. Among such various embodiments, in the case of the wall structure 100 according to the embodiment, the attachment hole 142 is formed with respect to the neutral plane N when receiving a bending moment about an axis extending in the width direction. They are provided separately on the far side and the near side in the depth direction. This makes it easy to distribute the mounting holes 142 near the neutral plane N, and the first plate 110 or the second plate 120 receives a bending moment around an axis extending in the width direction due to wind pressure or the like. Bending stress applied to the mounting means such as the bottom plate 140, the bolt 310, and the nut 500 is further reduced, increasing the strength of each part of the wall structure 100, and strengthening the mounting means such as the bolt 310 and the nut 500. This is unnecessary, and the wall structure 100 becomes lighter in combination with the hollow structure.

  The wall structure of the present invention includes an embodiment in which an inclined plate is not provided. Among the various embodiments, in the case of the wall structure 100 according to the embodiment, the depth direction increases from the lower side portion of the first plate 110 toward the lower side in the height direction. An inclined plate 111 that is inclined so as to go to the back side of the plate is branched, and an end portion on the lower side in the height direction of the inclined plate 111 is integrated with an end portion on the higher side in the height direction of the back plate 121. Is provided. In this way, it is easy to perform the work performed obliquely from above toward the mounting portion 160, and the workability is improved.

  The wall structure of the present invention does not limit the relationship between the length in the depth direction of the bottom plate and the length from the front surface in the depth direction of the first plate to the back surface in the depth direction of the second plate. Among such various embodiments, in the case of the wall structure 100 of the embodiment, the length L1 of the bottom plate 140 in the depth direction is the second plate from the front surface in the depth direction of the first plate. The length L2 to the surface in the depth direction of the plate was 1 to 3 times the length L2. In this way, the neutral plane N that is the bending center of the wall structure 100 can be set within the range of the length in the depth direction of the portion excluding the mounting portion 160 in the wall structure 100, Accordingly, the mounting hole 142 can be disposed in the vicinity of the neutral plane N, that is, near the center of bending, and a large eccentric load due to misalignment does not occur, and the mounting means such as the bottom plate 140, the bolt 310, and the nut 500 is applied. Bending stress and load on the housing can be reduced.

  The wall structure of the present invention does not limit the shape of the inner rib. Therefore, the cross-sectional shape of the inner rib may be the same along the height direction. Among such various embodiments, in the case of the wall structure 100 according to the embodiment, the length in the depth direction of a part of the inner rib 130 increases as the height decreases. . In this way, the strength of the mounting portion 160 is improved without increasing the length in the depth direction of the structure on the higher side of the wall structure 100, so that the bottom plate 140, the bolt 310, the nut 500, etc. The bending stress applied to the attachment means is further reduced, and it is not necessary to increase the strength of each part of the wall structure 100 or strengthen the attachment means such as the bolt 310 and the nut 500, and the wall structure is further combined with the hollow structure. It becomes lightweight.

  The wall structure of the present invention does not limit the weight per unit area obtained by dividing the weight by the area of the first plate or the second plate in the depth direction. Among such various embodiments, in the case of the wall structure 100 of the embodiment, the weight per unit area is set to 17 kg / m 2 or more. In this way, the minimum required sound insulation performance is obtained.

  The wall structure of the present invention is not limited to any material for the first plate, the second plate, the inner rib, the bottom plate, the slope, and the top plate. Among the various embodiments, in the case of the wall structure 100 according to the embodiment, the first plate 110, the second plate 120, the inner rib 130, the bottom plate 140, the inclined plate 111, and The top plates 150 are all formed of FRP. If it does in this way, the weather resistance of the structure 100 for walls and corrosion resistance will improve by FRP. Further, when these are composites comprising an outer layer formed of FRP and an inner layer formed of an inorganic filler inside the outer layer, the wall structure when viewed in the depth direction by the inner layer Since the mass per unit area is increased, the sound insulation function is improved, and the secondary moment of the section can be improved, and the bending stress is reduced.

  The wall structure of the present invention includes an embodiment in which neither side ribs nor grooves are provided. Among the various embodiments, in the case of the wall structure 100 according to the embodiment, among the end portions extending substantially in the height direction on both sides in the width direction of the second plate 120, Side ribs 181 projecting from the back in the depth direction to the front are provided to extend in the height direction, and grooves 182 that are recessed from the back in the depth direction to the front are provided to the end on the other side. The side rib 181 can be fitted to the groove 182 of the wall structure 100 having the same structure disposed adjacent to one side in the width direction, and the groove 182 is adjacent to the other side in the width direction. It is comprised so that it can fit with the said side rib 181 of the structure 100 for walls of the same structure arrange | positioned. In this way, since the fitting portion exhibits a labyrinth effect, noise leakage is reduced as compared with the case where the side ends of the walls of the same structure adjacent in the width direction are overlapped as in the prior art.

  Next, other embodiment or the modification of the structure for walls of this invention is shown. In these other embodiments or modifications, the configuration of the first embodiment is referred to as it is, and configurations different from the configuration of the first embodiment will be additionally described. FIG. 11 shows a second embodiment of the wall structure of the present invention. In the first embodiment, in each of the inner ribs 130, the length in the depth direction increases as the length decreases along the height direction. On the other hand, in the case of the second embodiment, the length in the depth direction of each inner rib 130 is increased as it decreases along the height direction. Correspondingly, the entire first plate 110 is inclined so as to move away from the second plate 120 as it decreases along the height direction. The operation and effect of the second embodiment are the same as the operation and effect of the first embodiment. In this way, the strength of the mounting portion 160 is improved while the length in the depth direction of the structure on the higher side of the wall structure 100 is gradually reduced toward the higher side, so that the bottom plate 140 is improved. The bending stress applied to the attaching means such as the bolt 310 and the nut 500 can be further reduced, and it is not necessary to increase the strength of each part of the wall structure 100 or strengthen the attaching means such as the bolt 310 and the nut 500. Combined with this, the wall structure becomes lighter.

  FIG. 12 shows a third embodiment of the wall structure of the present invention. In the first embodiment, among the end portions of the second plate 120 that extend substantially in the height direction on both sides in the width direction, the side ribs 181 that protrude from the back in the depth direction to the end portion on the one side are almost height. A groove 182 is provided extending in the depth direction, and is recessed in the depth direction from the back to the front. The side rib 181 is disposed adjacent to one side in the width direction. The side ribs 181 of the wall structure 100 having the same structure can be fitted into the groove 182 of the wall structure 100 having the same structure, and the groove 182 is disposed adjacent to the other side in the width direction. It was comprised so that it could be fitted. On the other hand, in the case of the third embodiment, the second plate 120 is recessed at the end extending in the height direction on both sides in the width direction from the back in the depth direction and closer to the front than the opening in the height direction. When the deformed groove 183 extending inward is provided extending substantially in the height direction, and the wall structure 100 having the same structure is disposed adjacent to one side or the other side in the width direction, both sides in the width direction are provided. The both side ends 210 of the connecting member 200 provided with the side ends of the shapes corresponding to the irregular grooves 183 can be fitted into the adjacent irregular grooves 183, respectively. The operations and effects of the third embodiment are the same as the operations and effects of the first embodiment. Furthermore, if the concave and convex shape of the fitting portion is increased as viewed from the height direction, the number of times the sound path is bent increases, so that the number of times the sound is bent increases and a noise reduction effect can be obtained. Therefore, the leakage of noise is reduced by this and the labyrinth effect as compared with the case where the side ends of the walls of the same structure adjacent in the width direction are overlapped as in the prior art. In this way, it is also possible to increase the uneven shape of the fitting portion in the first embodiment.

  FIG. 13 shows a fourth embodiment of the wall structure of the present invention. In the first embodiment, the side rib 181 and the groove 182 are formed in a U shape or a U shape when viewed in the height direction. On the other hand, in the case of the third embodiment, the side ribs 181 and the grooves 182 are formed in a V shape when viewed in the height direction. Although the operation and effect of the fourth embodiment are the same as the operation and effect of the first embodiment, there is an advantage that the side rib 181 and the groove 182 can be easily fitted.

  Moreover, FIG. 14 shows the construction example of the modification of 1st Embodiment of the structure for walls of this invention. In the case of this modification, the first plate 110 is a middle portion in the height direction and is higher in the height direction than the mounting portion, and is triangular as viewed from the width direction, and the cross-sectional shape by the surface facing the width direction is Triangular prism-shaped triangular ribs 190 that are constant along the width direction are provided. As shown in FIG. 14, the wall structure 100 according to the modified example of the present invention is arranged in the width direction on a frame 300 provided along a railroad or the like, and the bottom plate of the mounting portion 160 of each wall structure 100. If 140 is attached to the housing 300 by attaching means such as a bolt 310 and a nut 500, a wall is formed along the railway. And from the relationship of the construction limit of the structure, when the side groove 320 is provided along the width direction on the near side in the depth direction of the wall structure 100 in the housing 300, both ends in the depth direction of the groove lid 400 covering the side groove 320 are provided. The portion can be supported by being placed on the support wall 330 rising from the front side in the depth direction of the side groove 320 and the triangular rib 190, respectively, which is preferable because the space can be used effectively. The groove lid 400 may be, for example, a concrete plate, FRP or metal grating, and is not limited to this form such as material and shape.

  FIG. 15 shows a modification of the first embodiment of the wall structure of the present invention. The wall structure 100 according to the modification of the present invention focuses on the fact that the wall structure according to the modification of the present invention is a hollow structure, and a nut 500 for attaching a sign or the like is previously attached to the first plate 110. Provided. This is preferable because a sign or the like can be easily attached to the wall structure 100. Note that the nut 500 may be, for example, a blind nut in consideration of construction later, and is not limited to this form.

  Hereinafter, one example in the first embodiment of the wall structure of the present invention will be described. In the wall structure 100 according to this embodiment, the first plate 110, the second plate 120, the inner rib 130, the bottom plate 140, the inclined plate 111, and the top plate 150 are all made of the composite. The manufacturing method will be described. (1) First, a first mold for molding the second plate 120 and a first mold having a first plate 110, an inner rib 130, a bottom plate 140, an inclined plate 111, and a top plate 150 for forming the top plate 150. 2 A gel coat of about 500 to 800 g / m 2 is applied to the mold. (2) Next, 20 parts of aluminum hydroxide was added to the first mold while laminating a strand mat and a 0/90 degree stitched glass fabric (with glass mat) as a base material to be an outer layer. The first plate 110, the inner rib 130, the bottom plate 140, the inclined plate 111, and the top plate 150 are molded by impregnating with saturated polyester resin. Next, while arranging a predetermined number of rectangular cores, a 0 / +-45 degree stitching glass fabric (with a glass mat) is laminated and impregnated between the cores, and the H-shaped inner ribs 130 are formed. At this time, the web of the H-shaped inner rib 130 forms the side plate 131 of the mounting portion 160 at the same time. When this molded product is semi-cured, the core is removed. (3) Unsaturation with addition of 20 parts of aluminum hydroxide while simultaneously laminating a strand mat and 0/90 degree stitched glass fabric (with glass mat) as a base material to be the outer layer on the second mold at the same time The second plate 120 is molded by impregnating the polyester resin. The inner layer may be formed at this point. For example, the inner layer is a mixture of the resin and sand or glass balloon as a filler. (4) Then, when the first mold is inverted, the second mold 120 is overlapped and integrated with the second mold 120, and the molded product is cured, the wall structure 100 as an embodiment is obtained.

  The dimensions of the wall structure 100 according to the embodiment obtained as described above are 1.2m in the height direction, 1.5m in the width direction, and a structure on the side higher than the mounting portion 160. The dimension in the depth direction was 80 mm, and the total weight was 50 kg. A mounting hole 142 is made in the partial bottom plate 141 of the mounting portion 160 of the wall structure 100 so that the first plate 110 is on the lower side, the second plate 120 is on the upper side, and the second plate 120 is horizontal. The structural body 100 is attached to the gantry in a cantilevered state, and is a large universal testing machine, and the higher side along the height direction from the lower end surface (surface in contact with the gantry) of the bottom plate 140 of the mounting portion 160 When a load was applied to the part 1 m away from the top vertically, the vicinity between the bottom plate 140 and the side plate 131 of the mounting portion 160 was broken at a load of 20 kN. This load value is three times or more of 6.48 kN corresponding to 3.6 kN / m 2 which is the design wind load applied to the wall structure 100. Therefore, it was found that the wall structure 100 has sufficient strength.

  In addition, in order to study the sound leakage reduction effect of the side rib 181 and the groove 182 according to the present invention, the two wall structures 100 according to the embodiment are manufactured, and the side rib 181 of one wall structure 100 is formed. The groove 182 of the other wall structure 100 disposed adjacent to one side in the width direction was fitted. For comparison, a wall having a flat surface with no unevenness, such as the FRP soundproof wall of Patent Document 2 and the soundproof wall of Patent Document 3, was also manufactured. Then, one side in the depth direction with respect to the two wall structures 100 formed by fitting the side ribs 181 and the grooves 182 and the two conventional walls formed by overlapping the side ends. In addition, a sound source that generates a random waveform was placed, and a sound level meter was placed on the other side in the depth direction to measure the volume of the noise. As a result of the comparison, it was found that the wall structure 100 of the present invention has an effect of improving the noise level by 3 dB as compared with the conventional wall.

  16 and 17 show a fifth embodiment of the wall structure of the present invention. In the first embodiment, the attachment portions 160 are provided at two locations separated in the width direction in the wall structure 100. On the other hand, in the case of the fifth embodiment, the attachment portions 160 are provided at three locations that are separated from each other at substantially equal intervals in the width direction of the wall structure 100. As described above, this mounting portion may be provided at one place, at two places, or at four or more places.

Further, in the first embodiment, the plurality of inner ribs 130 are formed of plate-like members formed in a substantially rectangular shape when viewed from the plate thickness direction. In contrast, in the fifth embodiment, each of the plurality of inner ribs 130 includes a rib main body 132 similar to the inner rib 130 of the first embodiment, and a front side in the depth direction of the rib main body 132. Are provided with a flange 133 on the near side provided integrally therewith and a flange 134 on the back side provided integrally on the back side in the depth direction of the rib main body 132. The plurality of inner ribs 130 are spaced apart in the width direction between the first plate 110 and the second plate 120 such that the plate thickness direction of the rib main body 132 substantially coincides with the width direction. Each is arranged. In addition, each of the plurality of inner ribs 130 extends substantially in the height direction, the front flange 133 is provided integrally with the first plate 110, and the rear flange 134 is the first flange. The two plates 120 are integrally provided. The rib main body 132 is a plate-like member formed in a substantially rectangular shape when viewed from the thickness direction thereof, and the thickness direction of the rib main body is approximately between the first plate 110 and the second plate 120. They are arranged to match the width direction. The front flange 133 is a plate-like member formed in a substantially rectangular shape when viewed from the plate thickness direction, and is disposed along the inner surface of the first plate 110. The rear flange 134 is a plate-like member formed in a substantially rectangular shape when viewed from the plate thickness direction, and is arranged along the inner surface of the second plate 120. The near side flange 133 extends from the rib main body 132 to one side in the width direction, and the far side flange 134 extends from the rib main body 132 to the other side in the width direction. Therefore, the inner rib 130 is formed in a substantially Z shape when viewed in the height direction. The front side flange 133 is integrally formed with the first plate 110 by being simultaneously molded with the first plate 110, and the back side flange 134 is provided with respect to the second plate 120. The second plate 120 and the second plate 120 are integrally provided. However, any flange may be provided integrally with the first plate 110 or the second plate 120, which may be formed by simultaneous molding or by an adhesive. Moreover, you may use the inner rib which consists only of a plate-shaped body like 1st Embodiment instead of such an inner rib with a flange.

  Reinforcing ribs 135 are provided on the inner ribs 130 of the fifth embodiment. The reinforcing rib 135 is formed by bending a plate-like member into a wave shape. That is, the reinforcing rib 135 is formed in a substantially rectangular shape when viewed from the width direction, and is formed in a wave shape having a substantially continuous S-shape when viewed from the depth direction. The rib main body 132 is bonded to a portion corresponding to a wave valley. The shape of the reinforcing rib is not limited by the fifth embodiment. Further, the reinforcing rib 135 may be provided on one side in the width direction of the rib main body 132 as in the fifth embodiment, or may be provided on both sides.

  The side rib 181 and the groove 182 are provided in the wall structure 100 of the first embodiment. On the other hand, the wall structure 100 of the fifth embodiment is provided with the side cover 184 and the cover receiving portion 185 without providing the side rib and the groove. That is, the side cover 184 that protrudes outward in the width direction with respect to the inner rib 130 at the end on one side of the ends extending in the height direction on both sides in the width direction of the second plate 120 is substantially in the height direction. A cover receiving portion 185 that is recessed from the back in the depth direction toward the front is provided at the other end portion so as to extend substantially in the height direction. 6 and 7, when the wall structures 100 of the fifth embodiment are arranged along the width direction, the side cover 184 is adjacent to one side in the width direction. The wall receiving structure 100 having the same structure disposed in the cover receiving portion 185 is configured to be able to overlap. The side cover 184 and the cover receiving portion 185 may be provided on the first plate. Further, instead of the side cover 184 and the cover receiving portion 185 as described above, the side rib 181 and the groove 182 as described in the first embodiment or the fourth embodiment, or the third embodiment have been described. Such a modified groove 183 and the connecting member 200 may be used.

  The partial bottom plate 141 of the fifth embodiment is provided with a mounting hole 142 penetrating substantially in the height direction. In this embodiment, two attachment holes 142 are provided in one attachment portion 160, but the number of attachment holes provided in the attachment portion may be one or three or more.

  As shown in FIG. 17, the mounting holes 142 are provided so as to be distributed with respect to the neutral surface N on the far side and the near side in the depth direction. In this embodiment, the line connecting the mounting holes 142 distributed in this way is made to be substantially perpendicular to the neutral axis, but is distributed to the back side and the near side in the depth direction with respect to the neutral surface N. The mounting holes 142 may be staggered so that the line connecting the mounting holes 142 crosses the neutral axis at an angle rather than perpendicularly. Other configurations in the fifth embodiment are the same as those in the first embodiment.

  In the fifth embodiment, in addition to obtaining the functions and effects obtained in the first embodiment, the inner rib 130 is further provided with a rib main body 132, a flange 133 on the near side, and a rear side. Since the flange 134 is provided, the bending rigidity of the inner rib 130 itself is increased. Further, since the inner rib 130 includes the reinforcing rib 135, the bending rigidity of the inner rib 130 itself is increased. Furthermore, since the labyrinth effect is exhibited by the side cover 184 and the cover receiving portion 185 being overlapped, compared to simply overlapping the side ends of the same structure adjacent in the width direction as in the conventional case. , Noise leakage is reduced.

  FIG. 18 shows a sixth embodiment of the wall structure of the present invention, and FIG. 19 shows a seventh embodiment of the wall structure of the present invention. In the fifth embodiment, the front flange 133 extends from the rib main body 132 to one side in the width direction, and the rear flange 134 extends from the rib main body 132 to the other side in the width direction. On the other hand, in the sixth embodiment, the front flange 133 extends from the rib body 132 in both the width direction, and the back flange 134 extends from the rib body 132 in both the width direction. Yes. Therefore, the inner rib 130 is substantially H-shaped when viewed in the height direction. In the seventh embodiment, the near side flange 133 extends from the rib body 132 to one side in the width direction, and the back side flange 134 also extends from the rib body 132 to one side in the width direction. Therefore, the inner rib 130 is formed in a substantially U shape when viewed in the height direction. The sixth embodiment and the seventh embodiment can obtain the same operations and effects as the operations and effects obtained in the fifth embodiment.

  The present invention includes an embodiment in which the features of the above-described embodiment or modification are combined. Accordingly, the wall structure of the present invention has, for example, the inner rib of any one of the first to fourth embodiments or any of the fifth to seventh embodiments in the modification thereof. Embodiments including the side cover and the cover receiving portion of the fifth embodiment are included in any of the provided embodiments, any of the first to fourth embodiments, or modifications thereof. Furthermore, the above embodiment only showed some examples of the wall structure of the present invention. Therefore, the wall structure of the present invention is not limitedly interpreted by the description of these embodiments.

  INDUSTRIAL APPLICABILITY The present invention can be applied not only to sound insulation (soundproof) walls provided on railings for railroads or roads, but also to sound insulation walls against noise at construction sites.

DESCRIPTION OF SYMBOLS 100 Wall structure 110 1st board 111 Inclination board 120 2nd board 121 Back board 130 Inner rib 131 Side board 140 Bottom board 141 Partial bottom board 142 Attachment hole 160 Attachment part 181 Side rib 182 Groove 183 Deformation groove 200 Connecting member 210 Side end N Elevation

Claims (9)

A first plate disposed so that the plate thickness direction is substantially the depth direction when taking the depth direction, the width direction, and the height direction orthogonal to each other;
A second plate disposed opposite to the first plate so that the thickness direction is substantially the depth direction on the back side in the depth direction of the first plate;
The first plate and the second plate are arranged with a gap in the width direction so that the plate thickness direction is substantially in the width direction, each extending substantially in the height direction, and the front side in the depth direction A plurality of inner ribs provided integrally with the first plate, and end portions on the back side in the depth direction are provided integrally with the second plate;
The first plate, the second plate, and the inner rib are arranged on the lower side in the height direction so that the plate thickness direction is substantially the height direction, and the end portion on the back side in the depth direction is the height of the second plate. An end portion on the lower side in the depth direction is provided integrally with an end portion on the near side in the depth direction, and is provided integrally with an end portion on the lower side in the height direction of the first plate. Each of the inner ribs includes a bottom plate integrally provided at the lower end of the height direction of each inner rib,
A back plate which is a lower side portion in the height direction of the second plate, and two side plates which are lower side portions in the height direction of two adjacent inner ribs among the plurality of inner ribs;
The partial bottom plate that is a portion between the two side plates in the bottom plate constitutes a concave mounting portion that is opened to the near side in the depth direction ,
Depth from the lower part of the first plate in the height direction toward the lower side of the height direction
The inclined plate that is inclined so as to go to the back side of the direction is branched, and the height direction in this inclined plate
A wall structure in which an end portion on the lower side is integrally provided at an end portion on the higher side in the height direction of the back plate . The wall structure according to claim 1, wherein the partial bottom plate is provided with a mounting hole penetrating substantially in the height direction. The wall structure according to claim 2, wherein the mounting holes are provided so as to be divided into a depth side and a near side in a depth direction with respect to a neutral plane when receiving a bending moment about an axis extending in the width direction. The length of the bottom plate in the depth direction is the first on the side higher in the height direction than the mounting portion.
For any one of the walls of the claims 1 to 3 in the depth direction from the front side surface in the second plate 1 times or more the depth direction rear side to the surface length of it is 3 times or less of the plate Structure. The wall structure according to any one of claims 1 to 4 , wherein at least a part of each of the inner ribs, the length in the depth direction increases as the length decreases along the height direction. The wall structure according to any one of claims 1 to 5 , wherein the weight per unit area obtained by dividing the weight in the depth direction by the area of the first plate or the second plate is 17 kg / m ² or more. body. At least one of the first plate, the second plate, the inner rib, and the bottom plate is
The wall according to any one of claims 1 to 6 , which is a composite comprising an outer layer formed of FRP, or an outer layer formed of FRP and an inner layer formed of an inorganic filler inside the outer layer. Structure. Of the end portions extending substantially in the height direction on both sides in the width direction of the first plate or the second plate, side ribs protruding from the back in the depth direction toward the front are provided at one end portion so as to extend in the height direction. , A groove recessed from the back in the depth direction toward the front is provided at the other end, extending substantially in the height direction,
The side rib can be fitted with the groove of the wall structure having the same structure disposed adjacent to one side in the width direction, and the groove is disposed adjacent to the other side in the width direction. 2. The structure according to claim 1, wherein the side ribs of the wall structure having the same structure can be fitted.
The wall structure according to any one of 7 . At the ends of the second plate extending substantially in the height direction on both sides in the width direction, deformed grooves that are recessed from the back in the depth direction toward the front and that extend inward from the opening in the height direction are substantially in the height direction. Provided to extend,
Both sides of the connecting member provided with side ends having shapes corresponding to the irregular grooves on both sides in the width direction when the wall structure having the same structure is disposed adjacent to one side or the other side in the width direction. The wall structure according to any one of claims 1 to 7 , wherein the wall structure is configured so that the ends can be fitted into adjacent irregular grooves.

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