JP6722555B2 - Foam resin block with surface material - Google Patents

Description

The present invention relates to a foamed resin block with a surface material, and particularly to a foamed resin block with a surface material, which is preferably used in a lightweight embankment structure.

In recent years, as a construction method for widening embankments on sloping ground and embankment for self-supporting walls, in order to reduce the weight of the embankment structure and reduce earth pressure, etc. ") is used to construct a civil engineering structure such as a road using a lightweight embankment method. This lightweight embankment method can shorten the construction period and cost compared to the embankment method using soil.

In such a lightweight embankment method, foamed resin blocks are piled up to construct a lightweight embankment structure, and a surface formed by a metal plate, a synthetic resin plate, a cement plate, etc. at a portion located on the outer surface of the structure. The foamed resin block provided with the material is arranged so that the surface material is exposed to protect the foamed resin block inside.

As a method of adding the surface material to the foamed resin block, a support member into which a bolt for mounting the surface material is screwed is embedded on the surface of the foamed resin block that contacts the surface material, and a hole for inserting a bolt is provided in the surface material to foam. There is a method of fixing the resin block and the surface material with bolts. However, with this method, it is necessary to make a screw hole in the surface material, a repair agent for hiding the bolt is required because the bolt is exposed on the surface, and traces of the repair agent are left on the surface and the appearance However, there is a problem in that it is inferior in performance and that the bolt portion may cause a defect.

In order to avoid the above problems, as disclosed in Patent Document 1, a dovetail groove is formed on the surface of a foamed resin block formed in a rectangular parallelepiped, and a convex shape having a shape corresponding to the dovetail groove is formed on the back surface of the surface material. There has been proposed a foamed resin block with a surface material in which a surface material is attached to the surface of the foamed resin block by forming a ridge and fitting the ridge into a dovetail groove.

JP 2007-23665 A

However, when forming a dovetail groove having an open upper portion in the foamed resin block as disclosed in FIG. 2 of Patent Document 1, the foamed resin block and the surface material are directly fitted to each other. Also, depending on the foaming ratio, the fitting strength between the foamed resin block and the engaging portion of the surface material may be insufficient. In particular, since a large load is applied to the foamed resin block arranged in the lower part of the structure, the foamed resin block is likely to undergo compression creep deformation, and the deformation or damage of the foamed resin block triggers the attached surface material. There was a risk of cracks and chips.

The present invention has been made in view of the above circumstances, has excellent surface appearance, and can firmly attach the surface material and the foamed resin block, and the surface material due to compression creep deformation of the foamed resin block. It is an object of the present invention to provide a foamed resin block with a surface material, which is capable of effectively suppressing deformation and damage of the above.

In order to achieve the above-mentioned object, the foamed resin block with a surface material according to claim 1 is a foamed resin block with a surface material, wherein a surface material is attached to the surface of the foamed resin block, and a dovetail groove is formed on the surface. A foamed resin block and a fitting member which has a shape that follows the shape of the dovetail groove and is fitted into the dovetail groove, and a ridge located inside the dovetail groove of the foamed resin block are formed. A hook member is formed on the fitting member, and a hook insertion slit is formed at a position corresponding to the hook portion of the protrusion, and the hook portion of the fitting member is provided. The surface material is assembled to the foamed resin block by engaging with the hook insertion slot of the protrusion of the surface material.

Further, in the foamed resin block with a surface material according to claim 2, in the invention according to claim 1, the hook portion is formed by bending both opening edges of the fitting member inward. It is characterized in that the hook insertion slits are formed on both side surfaces of the protrusion at a position corresponding to the hook of the mating member.

Further, the foamed resin block with a surface material of claim 3 is the invention according to claim 1 or 2, wherein the surface of the foamed resin block and the ridge of the surface material cross the dovetail groove and the ridge. A positioning slit is formed, and a positioning plate inserted into the positioning slit is provided, and the positioning plate is interposed between the positioning slit of the foamed resin block and the positioning slit of the ridge of the surface material. Thus, the surface material is positioned with respect to the foamed resin block.

Further, the foamed resin block with a surface material of claim 4 is the invention according to any one of claims 1 to 3, wherein the dovetail groove of the foamed resin block is vertically arranged in a state where the foamed resin block is constructed and installed. The guide rod insertion portion is formed along the convex line of the surface material.

Further, a foamed resin block with a surface material according to claim 5 is the invention according to any one of claims 1 to 4, wherein a plurality of dovetail grooves of the foamed resin block and ridges of the surface material are formed. It is characterized by

According to the foamed resin block with a surface material of the present invention according to claim 1 described above, the surface material is fixed to the foamed resin block through the fitting member. That is, since the surface material is supported by the fitting member, the surface material can be firmly held in the foamed resin block by forming the fitting member with a material having high rigidity. Further, since the surface material is bonded to the surface of the foamed resin block through the fitting member, even if the foamed resin block is deformed by compression creep, there is no possibility of being directly deformed or damaged. Furthermore, since the ridge of the surface material is engaged by the hook portion of the fitting member, it is not necessary to make the shape of the ridge corresponding to the dovetail groove. Therefore, the ridge can be inserted from the direction perpendicular to the opening of the dovetail groove (the direction perpendicular to the surface of the foamed resin block), and the surface material can be easily mounted.

According to the foamed resin block with a surface material of claim 2, in addition to the effect of the invention of claim 1 described above, it becomes easy to manufacture a fitting member having a hook portion, The engagement strength is high.

According to the foamed resin block with a surface material of claim 3, in addition to the effect of the invention of claim 1 or 2 described above, the positioning plate secures the attachment position of the surface material to the foamed resin block.

According to the foamed resin block with surface material of claim 4, in addition to the effect of any one of the above-mentioned inventions, the foamed resin block with surface material of the upper stage is guided by the guide rod to the foamed resin block with surface material of the lower stage. It can be easily and accurately placed on the block.

According to the foamed resin block with a surface material of claim 5, in addition to the effect of the invention of any one of claims 1 to 4, the surface material can be more firmly attached to the foamed resin block.

It is a conceptual perspective view showing an example of a lightweight embankment structure in which a foamed resin block with a surface material according to the present invention is used. It is an exploded perspective view showing one embodiment of a foaming resin block with a surface material concerning the present invention. It is the figure which illustrated the cross-sectional shape of the dovetail groove formed in the foaming resin block with a surface material concerning the present invention. It is the figure which illustrated the structure which fixes a surface material to a foamed resin block via the fitting member of the foamed resin block with a surface material which concerns on this invention. It is the figure which illustrated the structure which fixes a surface material to a foamed resin block via the fitting member of the foamed resin block with a surface material which concerns on this invention. It is the figure which illustrated the shape of the dovetail groove formed in the foaming resin block with a surface material concerning the present invention, and the shape of the fitting member fitted in this dovetail groove. It is the perspective view which showed an example of the surface material in the foamed resin block with surface material which concerns on this invention from the back surface. It is the perspective view which showed an example of the assembling work of the foaming resin block with a surface material which concerns on this invention. It is a perspective view showing one embodiment of a foaming resin block with a surface material concerning the present invention. It is the perspective view which showed an example of the work which attaches the foaming resin block with a surface material which concerns on this invention to a concrete floor slab. It is the perspective view which showed an example of the work which attaches the foaming resin block with the surface material of the upper stage to the foaming resin block with the surface material of the lower stage which concerns on this invention. It is a conceptual sectional view showing an example of arrangement relation of a guide rod.

Hereinafter, an embodiment of a foamed resin block with a surface material according to the present invention will be described in detail with reference to the drawings.

The lightweight embankment structure 1 shown in FIG. 1 is a sloping ground widening structure, in which a drainage layer 3 such as a water-permeable material and a drainage material is additionally provided along the sloped surface of the ground 2, and a padding material is provided thereon. The foamed resin block structure 5 is laminated via the layer 4. Then, a concrete floor slab 6 is laid on the uppermost surface of the foamed resin block structure 5, and a roadbed 7 composed of a concrete layer 7a, gravel 7b, asphalt 7c, etc. is laid on it.
In the lightweight embankment structure 1 configured in this way, the side wall 9 is formed in the portion exposed to the outside so as to protect the foamed resin block 8 inside the foamed resin block structure 5. A foamed resin block 10 with a surface material is used for the side wall 9.

As shown in FIG. 2, the foamed resin block with surface material 10 is composed of a rectangular parallelepiped foamed resin block 11, a fitting member 20, a surface material 30, a positioning plate 40, and the like.

As the foamed resin block 11, foamed polystyrene, polyethylene, polypropylene, polyurethane, polyvinyl chloride or the like can be used. Of these, polystyrene is preferably used because it is inexpensive and has high strength even at low density.

Generally, the foamed resin block 11 preferably has a density of about 0.01 to 0.05 g/cm ³ . The size of the foamed resin block 11 is not particularly limited, but for example, a length of 50 to 200 cm, a width of 50 to 150 cm, and a height of 20 to 100 cm are preferable from the viewpoint of workability. Further, the foamed resin block 11 preferably has independent cells in consideration of water resistance, strength, etc. Further, the foamed resin block may be a foamed resin block formed by extrusion foaming. It may be a foamed resin block made of.

A dovetail groove 12 is formed on the outer surface of the foamed resin block 11. The dovetail groove 12 is formed along either the up-down direction or the left-right direction when the foamed resin block 11 is installed. However, when the reinforcing bar guide rod 50, which will be described later, is implanted in the dovetail groove 12, it is preferable that the dovetail groove 12 is formed along the vertical direction. When the dovetail groove 12 is formed along the vertical direction, it is preferable that the positioning slit 13 is formed so as to cross the dovetail groove 12 (in the width direction of the foamed resin block 11). It is particularly preferable that the positioning slit 13 is formed in the intermediate portion in the vertical direction of the foamed resin block 11.

The dovetail grooves 12 are preferably formed in two or more per foam resin block 11, and more preferably in four or more. Further, it is preferable that the foamed resin blocks 11 are formed at symmetrical positions with respect to the center C in the width direction. For example, when four dovetail grooves 12 are formed, as shown in FIG. Is preferably located at a distance L1 from both side surfaces E of the foamed resin block 11, and the other two are located at a distance L1 from the center C in the width direction of the foamed resin block 11.

The dovetail groove 12 in the present invention is formed so that the width thereof increases from the opening toward the inside of the foamed resin block 11. The specific shape of the dovetail groove 12 is not limited to the one having a trapezoidal cross section as shown in FIG. 3(a), but the circular shape shown in FIG. 3(b) or the T shown in FIG. 3(c). It may have a letter shape. When the shape of the dovetail groove 12 is changed in this way, the cross-sectional shape of the fitting member 20 described later that fits in the dovetail groove 12 is also changed accordingly.

The fitting member 20 is formed following the shape of the dovetail groove 12 of the foamed resin block 11, and is fitted into the dovetail groove 12.
The fitting member 20 is not particularly limited in its forming method as long as it has a shape following the shape of the dovetail groove 12, but a plate-like member, for example, a sheet metal formed by bending the dovetail groove 12 into the shape, Examples thereof include those formed by extruding molten resin or molten metal from a die having a shape that follows the shape of the dovetail groove 12.

The fitting member 20 is formed of metal, synthetic resin, or the like, and in particular, Galvalume steel plate (registered trademark), stainless plate, hot dip galvanized plate, hot dip zinc-aluminum-magnesium alloy plated steel plate having excellent corrosion resistance and good workability. Etc. are preferably used. The thickness of the fitting member 20 is preferably 0.2 to 5 mm, more preferably 0.3 to 3 mm, in consideration of both strength and lightness.

A hook portion 21 is formed on the fitting member 20, and the hook portion 21 and a hook portion insertion slit 33 formed at a position corresponding to a hook portion of a protrusion 31 of a surface material 30 described later are engaged with each other. The surface material 30 is assembled to the foamed resin block 11 by combining them.
The hook portion 21 may be formed by bending both opening edges of the fitting member 20 inward as shown in FIG. 4, and as shown in FIG. It may be formed by bending the tip of the projection piece 23 fitted into the concave portion 35 formed in 31 toward the outside. From the viewpoint of fitting strength and ease of manufacturing, it is preferable that the hook portions 21 are formed by bending both opening edges of the fitting member 20 inward. The shape of the hook portion 21 is not particularly limited as long as it can be engaged with the hook portion insertion slit 33 formed on the surface material 30 side, but is, for example, a linear shape, an L-shape, or a shape bent into a hook shape. Is mentioned.

Further, when the hook portions 21 are formed on both opening edges of the fitting member 20, it is preferable that the side surface of the fitting member 20 be slightly inwardly inclined with respect to the side surface of the dovetail groove 12. Specifically, when the dovetail groove 12 has a trapezoidal cross section and the fitting member 20 has a trapezoidal cross section as shown in FIG. It is preferable that the angle θ2 formed by the bottom surface 20a and the side surface 20b of the fitting member 20 is more acute than the angle θ1. If the angle θ2 is more acute than the angle θ1, the hook portion 21 of the fitting member 20 is spread outward by the ridge 31 when the projection 31 of the surface material 30 and the fitting member 20 are engaged with each other. This is preferable because it can be engaged more firmly. The angle of the angle θ2 with respect to the angle θ1 depends on the shape of the dovetail groove 12, but is preferably an acute angle of approximately 2 to 20° inward.

The surface material 30 is not particularly limited as long as it is a hard plate-shaped member, and is formed mainly of a material having excellent rigidity such as a metal plate, a synthetic resin plate, and a cement plate. Further, the surface material 30 may be blended with an auxiliary agent such as a plasticizer, an ultraviolet absorber, a colorant, an antistatic agent, an antibacterial agent, a flame retardant, and a filler as long as the effects of the present invention are not impaired. good. The surface of the surface material 30 may be coated with a waterproof material, a coloring agent, a hydrophilic material, a water repellent material, a heat shield material, or the like.

As shown in FIG. 7, a ridge 31 is formed on the back surface of the surface material 30 at a position corresponding to the dovetail groove 12 of the foamed resin block 11.
The side surface of the ridge 31 is not particularly limited as long as it can be engaged with the fitting member 20, but is preferably tapered. Moreover, it is preferable that the width of the tip end surface of the ridge 31 formed on the surface material 30 is smaller than the opening width of the dovetail groove 12 of the foamed resin block 11. The side surface of the ridge 31 is tapered, the width of the tip end surface is smaller than the opening width of the dovetail groove 12 of the foamed resin block 11, and the fitting member 20 forms an angle θ1 formed by the dovetail groove 12. If the angle θ2 is sharper, even if a part of the surface material 30 constituting the side wall 9 of the lightweight embankment structure 1 is damaged, only the damaged surface material is removed and a new surface material is removed. It is preferable to fit it from the surface toward the foamed resin block 11 because it can be easily repaired.

When a new surface material 30 is fitted from the surface toward the foamed resin block 11, the angle θ2 formed by the bottom surface 20a and the side surface 20b of the fitting member 20 is smaller than the angle θ1 formed by the bottom surface 12a and the side surface 12b of the dovetail groove 12. Because of the acute angle, before the surface material 30 is fitted into the foamed resin block 11, there is a gap between the side surface of the dovetail groove 12 and the side surface of the fitting member 20. When the surface material 30 is fitted from the surface toward the foamed resin block 11, the hook portion 21 of the fitting member 20 is expanded outward by the ridge 31 so that the side surface of the dovetail groove 12 and the side surface of the fitting member 20. And the hook portion 21 of the fitting member 20 and the hook portion insertion slit 33 of the ridge 31 are engaged with each other, and the side surface of the fitting member 20 is elastically deformed to cause the hook portion. By returning 21 to the inside, a gap is formed again between the side surface of the dovetail groove 12 and the side surface of the fitting member 20.

The ridges 31 may be formed continuously in the vertical direction or may be formed intermittently. From the viewpoint of strength for fixing the foamed resin block 11 and the surface material 30, it is preferable that the foamed resin block 11 and the surface material 30 are continuously formed in the vertical direction. A positioning slit 34 is preferably formed on the ridge 31 so as to cross the ridge 31, and the positioning slit 34 is particularly preferably formed in the longitudinal intermediate portion of the ridge 31. .. Further, a hook portion insertion slit 33 that can engage with the hook portion 21 is formed on the ridge 31. The hook insertion slit 33 is formed at a position corresponding to the hook 21 formed on the fitting member 20 as shown in FIGS. 4 to 7, but from the viewpoint of engagement strength, the hook is inserted. The part insertion slits 33 are preferably formed on both side surfaces of the ridge 31 as shown in FIGS. 4 and 7.

It is preferable that a guide rod insertion portion 32 is vertically extended on a tip end surface of the ridge 31, and a hook insertion slit 33 is vertically formed on a side wall thereof. When the guide rod insertion portion 32 is formed on the ridge 31, the shape shown in FIG. 4A can be exemplified. Further, the guide rod insertion portion may be formed on the fitting member 20, and when the guide rod insertion portion 22 is formed on the fitting member 20, the shape of FIG. 4B or 5 can be exemplified. .. From the viewpoint of the bonding strength between the surface material 30 and the foamed resin block 11, it is more preferable that the guide rod insertion portion 32 be formed on the ridge 31.

The surface material 30 may be formed of one surface material for one foamed resin block 11, or may be formed of two or more surface materials for one foamed resin block 11. Is also good. It should be noted that the dovetail groove 12 and the corresponding ridges 31 corresponding to the dovetail groove 12 are provided one or more per surface material. For example, when one foam resin block 11 is composed of two surface materials 30, one surface material has at least one ridge 31.

Further, the surface material 30 has a size slightly smaller than the outer surface of the foamed resin block 11 so that when the foam block with surface material undergoes compressive creep deformation, the foamed material with adjacent surface material is foamed. It is possible to prevent the surface materials of the body block from coming into contact with each other and cracking or chipping. From the above viewpoint, the length per side of the surface material 30 is preferably 0.5 to 10% shorter than the length per side of the outer surface of the foamed resin block 11, and more preferably 1 to 5% shorter. Further, the thickness of the surface material 30 is preferably 7 to 40 mm, more preferably 10 to 25 mm, from the viewpoint of heat resistance, strength, lightness and the like.

The positioning plate 40 is formed of Galvanium steel plate (registered trademark), stainless plate, hot-dip galvanized plate, hot-dipped zinc-aluminum-magnesium alloy-plated steel plate or the like having high rigidity and excellent corrosion resistance, like the fitting member 20. ing. The positioning plate 40 has dimensions corresponding to the thickness, depth and width of the positioning slit 13 of the foamed resin block 11.

As a method of assembling the foamed resin block 10 with the surface material, first, in FIG. 2, the positioning plate 40 is fitted into the positioning slit 13 of the foamed resin block 11. Next, the protrusions 31 are inserted into the dovetail grooves 12 of the foamed resin block 11 while fitting the positioning slits 34 of the surface material 30 to the positioning plate 40 (see FIG. 8 ). Then, the fitting member 20 is inserted between the dovetail groove 12 of the foamed resin block 11 and the projection 31 of the surface material 30 to fit the hook portion 21 into the hook insertion slit 33 of the projection 31 so that the surface is obtained. The foamed resin block 10 with material can be formed (see FIG. 9).

In the foamed resin block with surface material 10 assembled in this way, the side surface of the fitting member 20 is restrained in the dovetail groove 12 by the side surface of the dovetail groove 12 of the foamed resin block 11, as shown in FIGS. 4 and 5. Then, the hook portion 21 of the fitting member 20 is engaged with the hook portion insertion slit 33 of the ridge 31 of the surface material 30, and the surface material 30 is assembled to the foamed resin block 11.
Further, when the guide rod insertion portion 32 is formed on the surface material 30, as shown in FIG. 4A, the opening of the groove-shaped guide rod insertion portion 32 of the ridge 31 is formed by the bottom wall of the fitting member 20. It is covered and defines a guide rod insertion hole 32a therein. When the groove-shaped guide rod insertion portion 22 is formed in the fitting member 20, the opening of the guide rod insertion portion 22 is covered with the surface material 30 as shown in FIG. 5B, and the guide rod insertion hole is formed therein. 22a is defined.

Such a foamed resin block 10 with a surface material is laid on a concrete floor slab 6 placed on a flat portion of the ground 2, as shown in FIG. 1, to construct the lightweight embankment structure 1.

As a method for constructing the lightweight embankment structure 1 using the foamed resin block 10 with the surface material, first, the reinforcing bar guide rod 50 is planted together with the concrete floor slab 6 being placed. The guide rod 50 is installed at a position corresponding to the guide rod insertion hole 32a on the end E side of the foamed resin block 10 with surface material.

Next, as shown in FIG. 10, the guide rod insertion holes 32a of the foamed resin block with surface material 10 are fitted into these guide rods 50 to install the foamed resin block with surface material 10. After the foamed resin block with surface material 10 is laid on the concrete floor slab 6, the foamed resin block 8 is laid inside.

Next, the guide rod 51 is inserted into the guide rod insertion hole 32a located in the middle of the laid foamed resin block with surface material 10.

The insertion depth of the guide rod 51 inserted into the guide rod insertion hole 32a of the foamed resin block with surface material 10 in this manner is regulated by the positioning plate 40.

Then, as shown in FIG. 11, the guide rod 51 inserted into the foam resin block with surface material 10 in the lower stage is fitted with the guide rod insertion hole 32a of the foam resin block with surface material 10 laid in the upper stage. Then, the foamed resin block 10 with the surface material on the upper stage is laid.

After the foamed resin block with surface material 10 is laid on the foamed resin block with surface material 10 in the lower stage, the foamed resin block 8 is laid inside the ground 2.

Then, concrete is placed on the upper surface of the foamed resin structure 5 in which a plurality of foamed resin blocks 10 and 8 having surface materials are laid and a floor slab 6 is formed thereon, and the surface is again subjected to the procedure described above. The foamed resin block with material 10 and the foamed resin block 8 are laid to construct the lightweight embankment structure 1 as shown in FIG.

In the lightweight embankment structure 1 constructed in this way, the joint material can be loaded between the surface materials 30. The joint material is, for example, a method of charging a backup material after forming a lightweight embankment structure and filling a sealing material on the outside thereof, or when laying a foamed resin block with a surface material, the foamed resin blocks with the surface material are Between AES (acrylonitrile-ethylene-styrene copolymer), polyvinyl chloride, silicon, EPDM (ethylene propylene rubber), urethane, metal plate, EPDM foam, polyethylene foam etc. is there.

In the lightweight embankment structure 1 constructed in this way, as shown in FIG. 12, the widthwise end of the foam resin block with surface material 10 on the upper stage is a guide rod at the middle portion of the foam resin block with surface material 10 on the lower stage. It is connected by 51. That is, since the upper and lower surface foam resin blocks 10 are connected by the discontinuous guide rod 51, the applied load generated in the upper and lower surface foam resin blocks 10 is applied to the other surface resin foam resin blocks 10. The damage can be minimized without being transmitted.

The foamed resin block with a surface material according to the present invention has been described above, but it goes without saying that the technical scope of the present invention is not limited to the scope described in the above embodiment. It is obvious to those skilled in the art that various modifications and improvements can be added to the above-described embodiment. It is also apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

The foamed resin block with a surface material according to the present invention can be easily attached to the foamed resin block of the surface material and can be firmly attached, and thus can be suitably used in a lightweight embankment structure.

1 Lightweight embankment structure 2 Rock mass 3 Drainage layer 4 Filling material 5 Foamed resin block structure 6 Concrete floor slab 7 Roadbed 7a Concrete layer 7b Gravel 7c Asphalt 8 Foamed resin block 9 Side wall 10 Foamed resin block with surface material 11 Foamed resin Block 12 Dovetail groove 13 Positioning slit 20 Fitting member 21 Hook 22 Guide rod insertion part 22a Guide rod insertion hole 23 Projection piece 30 Surface material 31 Convex ridge 32 Guide rod insertion part 32a Guide rod insertion hole 33 Hook insertion slit 34 Positioning Slit 35 Recess 40 Positioning Plate 50, 51 Guide Rod

Claims (5)

A foam resin block with a surface material in which a surface material is attached to the surface of the foam resin block, the foam resin block having a dovetail groove formed on the surface, and a shape that follows the shape of the dovetail groove. A fitting member fitted into the groove, and a surface material having a ridge located inside the dovetail groove of the foamed resin block, and a hook portion formed in the fitting member, A hook insertion slit is formed at a position corresponding to the hook of the ridge, and the surface is obtained by engaging the hook of the fitting member with the hook insertion slit of the ridge of the surface material. A foam resin block with a surface material, wherein a material is assembled to the foam resin block. The hook portion is formed by bending both opening edges of the fitting member inward, and the hook portion insertion slits are formed on both side surfaces of the protrusion at a position corresponding to the hook portion of the fitting member. The foamed resin block with a surface material according to claim 1, which is formed. Positioning slits are formed on the surface of the foamed resin block and the ridges of the surface material so as to cross the dovetail groove and the ridges, and a positioning plate inserted into these positioning slits is provided. The surface material is positioned with respect to the foamed resin block by interposing a plate in a positioning slit of the foamed resin block and a positioning slit of a ridge of the surface material. Or the foamed resin block with a surface material according to item 2. The dovetail groove of the foamed resin block is formed along the up-and-down direction in a state where the foamed resin block is built and installed, and a guide rod insertion portion is formed on the convex line of the surface material. The foamed resin block with a surface material according to any one of claims 1 to 3. The foamed resin block with a surface material according to claim 1, wherein a plurality of dovetail grooves of the foamed resin block and a plurality of ridges of the surface material are formed.

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