JP6058745B2 - Seismic-tightening metal fittings for foamed polystyrene blocks and seismic-tightening structures for foamed polystyrene blocks - Google Patents

Description

  The present invention relates to an anti-seismic fastening metal fitting for foamed polystyrene block that tightly connects two adjacent foamed polystyrene blocks, and an earthquake-resistant tightness structure of the foamed polystyrene block.

  As disclosed in JP 2012-017572 A (Patent Document 1) and JP 11-006226 A (Patent Document 2), an EPS (Expanded Poly-Styrol) method is known. In the EPS method, a plurality of polystyrene blocks are used as civil engineering materials. Specifically, a plurality of polystyrene blocks are arranged in the left-right direction (horizontal direction) and / or the up-down direction (vertical direction) at the construction site. Adjacent two foamed polystyrene blocks are fastened by a tight fitting (a tight fitting for a foamed polystyrene block).

  FIG. 11 is a perspective view showing a general fastening hardware 10Z. The binding fitting 10Z includes a plate portion 1 and a plurality of claw portions 2a and 2b. The plate portion 1 has a flat plate shape, and is provided with convex portions 1m and 1n at both ends in the lateral direction. The plurality of claw portions 2 a and 2 b are provided on the peripheral edge of the plate portion 1 and are formed by being bent perpendicularly to the plate portion 1.

  The claw portion 2a extends from the plate portion 1 toward one side, and the claw portion 2b extends from the plate portion 1 toward the other side (opposite side of the claw portion 2a). Fold lines 3a and 3b are formed between the plate portion 1 and the claw portions 2a and 2b, respectively. The plurality of folding lines 3a and 3b are arranged along each side of one rectangle so as to draw one rectangle as a whole.

  Referring to FIG. 12, the fastening fitting 10Z (FIG. 11) is manufactured by bending the base plate 5Z. The base plate 5Z is subjected to valley fold processing along the dotted line 4a, and mountain fold processing is performed along the dotted line 4b. Thereby, the tight fitting 10Z (FIG. 11) is obtained. The dotted lines 4a and 4b are portions that constitute the folding lines 3a and 3b, respectively, by being bent, and have a rectangular shape as a whole.

  With reference to FIG. 13, joint CL (joint location) is formed between two foamed polystyrene blocks 6 (6a, 6b) adjacent in the horizontal direction. The binding fitting 10Z is arranged so as to straddle the joint CL (so as to straddle the two foamed polystyrene blocks 6). The plurality of claw portions 2b are inserted into the foamed polystyrene blocks 6 (6a, 6b), so that the two foamed polystyrene blocks 6 (6a, 6b) are fastened together by the fastening fitting 10Z.

  The expanded polystyrene block 7 is disposed above the expanded polystyrene block 6 (6a, 6b) (upward in the vertical direction). By inserting the plurality of claw portions 2a into the foamed polystyrene block 7, the foamed polystyrene block 7 and the two foamed polystyrene blocks 6 (6a, 6b) arranged below the fastening fitting 10Z are fastened.

  14 includes only the claw portion 2a (the claw portion 2b is not provided in the binding metal 10Z illustrated in FIG. 14). As shown in FIG. 15, such a fastening fitting 10Z is used when two foamed polystyrene blocks 6 (6a, 6b) located in the uppermost layer are fastened.

  Referring to FIG. 16, the joint 10 </ b> Z formed between the expanded polystyrene blocks 6, 6 is used both in the case of using the fastener 10 </ b> Z as shown in FIG. 11 and in the case of using the fastener 10 </ b> Z as shown in FIG. 14. By being arranged and fixed so as to straddle the CL, the expanded polystyrene blocks 6 (6a, 6b) and the expanded polystyrene blocks 6, 7 are tightly coupled.

JP 2012-017572 A JP-A-11-006226

  In the fastening fitting 10Z as shown in FIGS. 11 and 14, a plurality of folding lines 3a, 3b formed between the plate portion 1 and the plurality of claw portions 2a, 2b extend along one side of one rectangle. Are arranged as follows. That is, the plurality of claw portions 2a and 2b are provided along each side of one rectangle.

  When an earthquake or ground deformation occurs, stress (for example, shear stress) acts on the plurality of claw portions 2a and 2b that bind the expanded polystyrene block. The plurality of claw portions 2a and 2b arranged in a rectangular shape can maintain a strong tightness state against an acting force (for example, seismic motion) received from a specific direction, but an acting force (for example, seismic motion) from another specific direction. If you receive this, you may not be able to maintain strong tightness.

  The present invention has been made in view of the above-described circumstances, and can maintain a tight binding state against an acting force (for example, seismic motion) received from an arbitrary direction as compared with a rectangular shape. An object of the present invention is to provide a seismic fastening metal fitting for a foamed polystyrene block and a seismic fastening structure of a foamed polystyrene block.

The seismic fastening metal fitting according to the present invention is a foamed polystyrene block seismic fastening metal fitting for bonding two adjacent polystyrene blocks, and is provided at the periphery of the plate portion and the plate portion, and is bent perpendicularly to the plate portion. And a plurality of fold lines formed between the plate portion and the plurality of claw portions are arranged along one side of one square. The plate portion has a square outer shape, and the plurality of claw portions are arranged so as to be continuously arranged along each side of the square, and the plurality of claw portions Includes a plurality of first claw portions extending from the plate portion to one side, and a plurality of second claw portions extending from the plate portion to the other side opposite to the one side. Provided on each side The plurality of first claw portions and the plurality of second claw portions are provided so as to form a line-symmetric shape with a straight line passing through the central portion of each side and perpendicular to the plate portion as a symmetric central axis. The plurality of first claw portions and the plurality of second claw portions provided on the first and second sides facing each other of the square are the first claw portions provided on the first side. And the second claw portion provided on the second side and the second claw portion provided on the second side so that the first claw portion provided on the second side does not face each other. And the plurality of first claw portions and the plurality of second claw portions provided on the third and fourth sides of the square facing each other are provided on the third side. The first claw portion and the first claw portion provided on the fourth side are not opposed to each other, and The second claw portion provided on the side and the second claw portion provided on the fourth side are provided so as not to face each other, and the first side and the fourth side of the square adjacent to each other are provided. Is a first predetermined plurality of the first claw portions arranged continuously on one end side, a second predetermined plurality of the first claw portions arranged continuously on the other end side, and a third arranged continuously on the central side. A plurality of second claw portions, and the first predetermined plurality of second claws arranged continuously at one end side of the second side and the third side of the square. Part, the second predetermined plurality of second claw parts arranged continuously on the other end side, and the third predetermined plurality of first claw parts arranged continuously on the center side, The first predetermined number and the second predetermined number are the same number, and each is less than the third predetermined number and the first predetermined number The total number of the plurality and the second predetermined number is greater than the third predetermined number.

The seismic tight structure of the expanded polystyrene block according to the present invention includes a first expanded polystyrene block, a second expanded polystyrene block horizontally adjacent to the first expanded polystyrene block, and a third expanded polystyrene block adjacent to the first expanded polystyrene block in the vertical direction. And the above-mentioned foamed polystyrene block earthquake-resistant tight fitting, and the foamed polystyrene block earthquake-resistant tight fitting is arranged so as not to straddle the joint portion between the first foamed polystyrene block and the second foamed polystyrene block. The first foamed polystyrene block and the third foamed polystyrene block are tightly coupled.
Preferably, the first foamed polystyrene block and the second foamed polystyrene block are arranged such that their longitudinal directions are parallel to each other, and the third foamed polystyrene block has its longitudinal direction in the longitudinal direction of the first foamed polystyrene block. They are arranged so as to be orthogonal to each other.

  According to said structure, a some nail | claw part is arrange | positioned so that each side of one square may be followed. The plurality of claw portions arranged in this manner can maintain a certain degree of tightness with respect to an acting force (for example, earthquake motion) received from an arbitrary direction.

FIG. 3 is a perspective view showing an earthquake-resistant tight fitting in Embodiment 1. FIG. 3 is a plan view showing the seismic tight fitting in Embodiment 1. It is a top view which shows the base plate (state before a bending process) prepared in order to produce the earthquake-resistant tight fitting in Embodiment 1. FIG. It is a top view for demonstrating the earthquake-resistant tight structure of a polystyrene block using the earthquake-resistant tight fitting in Embodiment 1. FIG. It is a perspective view which shows the other form of the earthquake-resistant tight fitting in Embodiment 1. FIG. FIG. 10 is a plan view showing another form of the earthquake-resistant tight fitting in the first embodiment. It is a figure for demonstrating notionally the passive resistance which the earthquake-resistant tight fitting and the earthquake-resistant tight structure in Embodiment 1 have. It is a figure for demonstrating conceptually the passive resistance which a general fastening metal fitting and a fastening structure have. FIG. 6 is a perspective view showing an earthquake-resistant tight fitting in Embodiment 2. FIG. 10 is a perspective view showing an earthquake-resistant tight fitting in Embodiment 3. It is a perspective view which shows a general binding metal fitting. It is a top view which shows the base plate (state before a bending process) prepared in order to produce a general binding metal fitting. It is a side view which shows a mode that the adjoining polystyrene block is fastened using a general fastening metal fitting. It is a perspective view which shows other general binding metal fittings. It is a side view which shows a mode that the adjacent expanded polystyrene block is fastened using another general fastening metal fitting. It is a top view which shows a mode that the adjacent polystyrene block is fastened using a general fastening metal fitting (or other general fastening metal fittings).

  Hereinafter, embodiments will be described with reference to the drawings. The same parts and corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated.

[Embodiment 1]
(Aseismic Tightening Bracket 10)
FIG. 1 and FIG. 2 are a perspective view and a plan view, respectively, showing the seismic fastening metal fitting 10 in the first embodiment. The earthquake-resistant tight fitting 10 has a plate portion 1 and a plurality of claw portions 2a and 2b. The plate part 1 has a flat plate shape. The plate part 1 in this Embodiment has a square-shaped external shape. The length of one side of the plate portion 1 is, for example, 150 mm. The plurality of claw portions 2 a and 2 b are provided on the peripheral edge of the plate portion 1 and are formed by being bent perpendicularly to the plate portion 1.

  The claw portion 2a extends from the plate portion 1 toward one side, and the claw portion 2b extends from the plate portion 1 toward the other side (opposite side of the claw portion 2a). In this embodiment, the claw portions 2a and 2b are formed by bending up or down three or four at a time, but the claw portions 2a and 2b are alternately bent up and down every other piece. It may be formed by.

  Fold lines 3a and 3b are formed between the plate portion 1 and the claw portions 2a and 2b, respectively. The plurality of folding lines 3a and 3b are arranged along each side of one square (see FIG. 2). In the present embodiment, the plurality of claw portions 2a and 2b are continuously formed with almost no gap along each side of one square (plate portion 1) so as to draw one square as a whole. They are arranged side by side.

  With reference to FIG. 3, the earthquake-resistant tight fitting 10 (FIGS. 1 and 2) is manufactured by bending the base plate 5. The base plate 5 is subjected to valley folding along the dotted line 4a, and is subjected to mountain folding along the dotted line 4b. Thereby, the earthquake-proof tight fitting 10 (FIG. 1, FIG. 2) is obtained. The dotted lines 4a and 4b are portions that constitute the folding lines 3a and 3b, respectively, by being bent, and have a square shape as a whole.

  The material of the base plate 5 is, for example, a molten 55% aluminum-zinc alloy plated steel plate (Galbarium steel plate (registered trademark)) defined in JIS G 3321. Aluminum and the like can be used in places where the influence of seawater is a concern.

(Seismic tight structure)
FIG. 4 is a plan view for explaining an earthquake-resistant tight structure of the expanded polystyrene blocks 6 and 7 using the earthquake-resistant tight fitting 10.

  The plurality of polystyrene blocks 6 (6a, 6b, 6c, 6d) are arranged adjacent to each other in the horizontal direction. The plurality of foam blocks 7 (7a, 7b) are also arranged adjacent to each other in the horizontal direction. However, the plurality of expanded polystyrene blocks 7 (7a, 7b) and the plurality of expanded polystyrene blocks 6 (6a, 6b, 6c, 6d) have different heights, and the expanded polystyrene blocks 7, 7 are expanded polystyrene. It is arranged above the blocks 6 and 6 (above in the vertical direction) (see arrows AR1 and AR2).

  As shown in FIG. 4, when the expanded polystyrene block 6 (6a, 6b) and the expanded polystyrene block 7 (7a) are viewed in plan, the longitudinal direction of the expanded polystyrene block 6 (6a, 6b) and the longitudinal direction of the expanded polystyrene block 7 (7a) Are orthogonal to each other. The expanded polystyrene block 6 (6a, 6b) is arranged so that its longitudinal direction is parallel to the left-right direction in the plane of FIG. On the other hand, the expanded polystyrene block 7 (7a) is disposed so that the longitudinal direction thereof is parallel to the vertical direction in FIG.

  An earthquake-resistant tight fitting 10 (10a) is provided at substantially the center of the right half in the longitudinal direction of the expanded polystyrene block 6 (6a). The upper half of the expanded polystyrene block 7 (7a) in the longitudinal direction is arranged so as to overlap the right half of the expanded polystyrene block 6 (6a) in the longitudinal direction (see arrow AR1). The expanded polystyrene block 6 (6a) and the expanded polystyrene block 7 (7a) are adjacent to each other in the vertical direction (direction perpendicular to the paper surface of FIG. 4), and are fastened to each other by the earthquake-resistant fastening fitting 10 (10a).

  An earthquake-resistant tight fitting 10 (10b) is provided at substantially the center of the left half in the longitudinal direction of the expanded polystyrene block 6 (6b). The lower half of the expanded polystyrene block 7 (7a) in the longitudinal direction is disposed so as to overlap the left half of the expanded polystyrene block 6 (6b) in the longitudinal direction (see arrow AR1). The expanded polystyrene block 6 (6b) and the expanded polystyrene block 7 (7a) are adjacent to each other in the vertical direction (the direction perpendicular to the paper surface of FIG. 4), and are fastened to each other by the earthquake-resistant fastening fitting 10 (10b).

  The foamed polystyrene block 6 (6a, 6b) is fastened to each other via the earthquake-resistant tight fitting 10 (10a, 10b) and the foamed polystyrene block 7 (7a). Here, the expanded polystyrene block 6 (6b) corresponds to the “first expanded polystyrene block”, the expanded polystyrene block 6 (6a) corresponds to the “second expanded polystyrene block”, and the expanded polystyrene block 7 (7a) corresponds to the “third expanded polystyrene block”. It corresponds to. The seismic tight fitting 10 (10b) is arranged so as not to straddle the joint CL between the first foam block (6b) and the second foam block (6a), and the first foam block (6b). The third polystyrene block (7a) is tightly coupled.

  These relationships also apply to the expanded polystyrene block 6 (6c, 6d), the seismic fastening metal fittings 10 (10c, 10d), and the expanded polystyrene block 7 (7b). In this case, the expanded polystyrene block 6 (6d) corresponds to the “first expanded polystyrene block”, the expanded polystyrene block 6 (6c) corresponds to the “second expanded polystyrene block”, and the expanded polystyrene block 7 (7b) corresponds to the “third expanded polystyrene block”. Corresponds to “block”. The seismic tight fitting 10 (10d) is disposed so as not to straddle the joint CL between the first foam block (6d) and the second foam block (6c), and the first foam block (6d). The third polystyrene block (7b) is tightly coupled.

  With reference to FIG. 5 and FIG. 6, when two foamed polystyrene blocks located in the uppermost layer are fastened, an earthquake-resistant fastening fitting 11 is used. (The claw portion 2b is not provided in the seismic fastening hardware 11 shown in FIGS. 5 and 6). By arranging the earthquake-resistant tight fitting 11 so as to straddle the joint formed between two adjacent foam blocks, the two adjacent foam blocks are fastened together. 1 and 2 may be arranged so as to straddle the joint formed between two adjacent foamed polystyrene blocks. According to the seismic fastening metal fitting 10 arranged in this way, two foamed polystyrene blocks adjacent in the left-right direction (horizontal direction) are directly fastened by one seismic fastening metal fitting 10.

(Function and effect)
A tight fitting 10 </ b> Z shown in FIGS. 11 and 14 has a rectangular plate portion 1. The size of the plate part 1 is, for example, 100 mm × 150 mm. On the other hand, the earthquake-resistant tight fitting 10 in the present embodiment has a square plate portion 1. The size of the plate portion 1 is, for example, 150 mm × 150 mm. The area in which the seismic fastening metal fitting 10 can come into contact with the expanded polystyrene block is 1.5 times wider than the area in which the fastening metal fitting 10Z can come into contact with the foamed polystyrene block. The earthquake-resistant tight fitting 10 can secure a larger amount of frictional resistance as a surface than the tight fitting 10Z.

  The number of the claw portions 2a and 2b provided on one side is six for the fastening fittings 10Z, whereas ten for the seismic fastening fittings 10 (1.67 times). Therefore, the tear resistance (shear stress: τ) of the claw portion of the seismic tie 10 is 1.67 times the tear resistance of the claw portion of the tie 10Z, and when a strong ground deformation occurs. In addition, it is possible to ensure the tightness (integration) of the polystyrene foam block.

  As described above, the seismic fastening hardware 10 of the present embodiment is arranged so as not to straddle the joint CL formed between the blocks. When the seismic binding metal fitting 10 is arranged so as to straddle the joint CL, the vertical drainage flowing through the joint CL easily goes around the seismic binding metal fitting 10. The possibility that the seismic fastening metal fitting 10 is exposed to water for a long period of time increases, and corrosion and deterioration are likely to proceed. On the other hand, when the seismic binding metal fitting 10 is arranged so as not to straddle the joint CL, the wraparound of the water is reduced due to the close contact between the blocks. It becomes possible.

  With reference to FIG. 7, the seismic fastening metal fitting 10 in the present embodiment is arranged so as not to straddle the joint (CL) between the blocks. When the ground deformation occurs, for example, a displacement (stress) from the right side to the left side acts on the expanded polystyrene block (see arrow DR). This stress acts so that the claw portion 2b shears the block (arrows DR1, DR2, DR3). The hatched portion in FIG. 7 conceptually shows the passive resistance.

  In the case of the earthquake-resistant tight fitting 10 in the present embodiment, the claw portion 2b is disposed at a position away from the joint CL (see FIG. 4). Therefore, in the case of the seismic tight fitting 10, since the passive resistance is large, it is assumed that the deformation of the entire block can be controlled even when the ground deformation occurs. This effect is also exhibited in the direction perpendicular to the arrow DR (up and down direction in FIG. 4) by making the plate portion 1 (positions of the claw portions 2a and 2b) of the seismic fastening metal fitting 10 square. The

  Referring to FIG. 8, in the case of the fastening fitting 10Z described at the beginning, it is arranged so as to straddle the joint CL. Accordingly, in the case of the fastening metal fitting 10Z, since the passive resistance to the stress (see arrows DR4 and DR5) generated due to ground deformation or the like is small, the end of the expanded polystyrene block (joint CL is formed from the claws 2a and 2b. A larger shear stress acts toward the end face portion). That is, it can be said that the earthquake-resistant tight fitting 10 of the present embodiment can suppress the deformation of the expanded polystyrene block more than such a tight fitting 10Z, and can maintain the integration of the expanded polystyrene block over a long period of time. Moreover, since the fastening fitting 10Z has an asymmetric shape, it behaves to rotate when an earthquake motion is applied. By making the seismic tight fitting 10 into a square shape, it becomes a symmetrical shape, and this rotational behavior can be controlled, and it can be said that the seismic performance is further enhanced.

  In addition, the EPS method may be used as a lightweight embankment on the back side of the abutment. At that time, not only the direction orthogonal to the road (both straight embankments) but also the earthquake resistance in the longitudinal direction of the road is required. By making the plate part 1 (position of the claw parts 2a, 2b) of the seismic fastening metal fitting 10 into a square shape, it can be expected to improve the seismic resistance from both directions (the direction orthogonal to the road and the longitudinal direction of the road). It is.

  When applying an EPS embankment having a trapezoidal shape or a road widening EPS embankment on soft ground, it is required to have a predetermined earthquake resistance mainly in the direction perpendicular to the road. However, when EPS embankment is applied to the back embankment of small structures, it is necessary to study earthquake resistance in both directions. Therefore, since it is possible to improve the seismic resistance from both directions by making the seismic tight fittings square, the seismic tight fittings as described in this embodiment can be used for EPS embankment on the back embankment of small structures. Can also be effectively applied.

[Embodiment 2]
With reference to FIG. 9, the seismic tight fitting 12 in the second embodiment will be described. In the earthquake-resistant tight fittings 10 and 11 (see FIGS. 1 and 5) according to the first embodiment described above, the plurality of claw portions 2a and 2b are almost spaced along each side of one square (plate portion 1). It is arranged so that it is continuously lined up.

  As shown in FIG. 9, in the seismic fastening metal fitting 12, a plurality of claw portions 2a and 2b are arranged so as to be arranged at intervals along each side of one square (plate portion 1). However, also in the present embodiment, the folding lines 3a and 3b are arranged along each side of one square (plate portion 1) so as to draw one square as a whole. Also with this configuration, it is possible to obtain substantially the same operations and effects as in the first embodiment.

[Embodiment 3]
With reference to FIG. 10, the seismic tight fitting 13 in the third embodiment will be described. The earthquake-resistant tight fittings 10 and 11 (see FIGS. 1 and 5) in the first embodiment described above include the plate portion 1 having a square outer shape. It is not essential that the shape of the plate portion 1 itself is a square shape, and a plurality of folding lines 3a and 3b (a plurality of claw portions 2a and 2b) are arranged along each side of one square as a whole. It only has to be done.

As shown in FIG. 10, in the earthquake-resistant tight fitting 13, the plate portion 1 itself does not have a square shape , and is provided with convex portions 1 m and 1 n. However, also in the present embodiment, the folding lines 3a and 3b are arranged along each side of one square so as to draw one square as a whole. Also with this configuration, it is possible to obtain substantially the same operations and effects as in the first embodiment.

  Although the embodiment has been described above, the above disclosure is illustrative in all respects and is not restrictive. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1 Plate part, 1m, 1n Convex part, 2a, 2b Claw part, 3a, 3b, 4a, 4b Folding line, 5, 5Z Base plate, 6, 7 Styrofoam block, 10, 11, 12, 13 Seismic tight fitting 10Z Tightening fitting, AR1, AR2, DR, DR1, DR2, DR3, DR4, DR5 arrow, CL joint.

Claims (3)

An earthquake-resistant fastening bracket for a foamed polystyrene block that joins two adjacent foamed polystyrene blocks,
A plate part;
A plurality of claw portions provided on the periphery of the plate portion and formed by being bent perpendicularly to the plate portion;
The plurality of fold lines formed between the plate portion and the plurality of claw portions are arranged along each side of one square ,
The plate portion has a square outer shape,
The plurality of claw portions are arranged so as to be continuously arranged along each side of the square,
The plurality of claw portions include a plurality of first claw portions extending from the plate portion to one side and a plurality of second claw portions extending from the plate portion to the other side opposite to the one side. ,
The plurality of first claw portions and the plurality of second claw portions provided on each side of the square have a symmetric central axis passing through a center portion of each side and perpendicular to the plate portion. As a line-symmetric shape,
The plurality of first claw portions and the plurality of second claw portions provided on the first and second sides facing each other of the square include the first claw portion provided on the first side and the second claw portion. The second claw portion provided on the first side and the second claw portion provided on the second side do not face each other so that the first claw portion provided on the side does not face each other. Is provided as
The plurality of first claw portions and the plurality of second claw portions provided on the third and fourth sides facing each other of the square include the first claw portion provided on the third side and the fourth claw portion. The first claw portion provided on the side does not face the second claw portion provided on the third side and the second claw portion provided on the fourth side does not face each other. Is provided as
In the first side and the fourth side adjacent to each other in the square,
A first predetermined plurality of the first claw portions arranged continuously on one end side;
A second predetermined plurality of the first claw portions arranged continuously on the other end side;
A third predetermined plurality of the second claw portions arranged continuously on the center side, and
In the second side and the third side adjacent to the square,
The first predetermined plurality of second claw portions arranged continuously on one end side;
The second predetermined plurality of second claw portions arranged continuously on the other end side;
The third predetermined plurality of first claw portions arranged continuously on the center side, and
The first predetermined number and the second predetermined number are the same number, and each is less than the third predetermined number,
A total number of the first predetermined number and the second predetermined number is greater than the third predetermined number;
Seismic tight fitting for Styrofoam block. A first polystyrene block;
A second expanded polystyrene block horizontally adjacent to the first expanded polystyrene block;
A third foam block adjacent to the first foam block in the vertical direction;
And an earthquake-resistant tight fitting for a polystyrene foam block according to claim 1 ,
The earthquake-resistant tight fitting for the foamed polystyrene block is disposed so as not to straddle the joint portion between the first foamed polystyrene block and the second foamed polystyrene block, and the first foamed polystyrene block and the third foamed polystyrene block are tightly coupled. doing,
Seismic tight structure of expanded polystyrene block. The first foamed polystyrene block and the second foamed polystyrene block are arranged so that their longitudinal directions are parallel to each other,
The third expanded polystyrene block is arranged so that its longitudinal direction is orthogonal to the longitudinal direction of the first expanded polystyrene block,
The earthquake-resistant tight structure of the expanded polystyrene block according to claim 2.

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