Storage tank

Abstract

To provide a storage tank high in assembling workability and a degree of freedom of designing, and superior in earth pressure resistance.SOLUTION: A block layer 5 that constitutes a skeleton block structure 1 includes: a lower stage block aggregation 6A in which plural skeleton blocks 10 are adjacent to each other in a horizontal direction; and an upper stage block aggregation 6B in which plural skeleton blocks 10 are adjacent to each other in the horizontal direction and which is assembled to the lower stage block aggregation 6A being bonded by plural joint parts 7. In an outer periphery in the lower stage block aggregation 6A that constitutes the block layer 5, the joint parts 7 are arranged in three places with a gap therebetween and four corners of the periphery are formed of three-consecutive serial skeleton blocks 10B, 10C formed linearly. The four corners are coupled with each other directly or via two-consecutive skeleton blocks 10D where two jointed parts 7 are arranged with a gap therebetween.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a storage tank for storing rainwater or the like for use in fire prevention, water sprinkling, flood prevention, or the like. [Background technology]

[0002] Nowadays, land cover caused by urbanization has significantly reduced the underground infiltration capacity of rainwater, causing frequent damage from flooding of roads and facilities. To address this problem, it has been known to construct a storage tank for storing river water, rainwater, etc. underground using a resin skeletal block structure (see, for example, Patent Document 1). The skeletal block structure that constitutes this storage tank is constructed by arranging multiple resin skeletal blocks adjacent to each other horizontally and stacking them vertically. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-38457 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a storage tank of the above-described structure that is installed underground, the skeletal blocks can withstand the earth pressure from the surrounding area, but if the earth pressure applied from a particular direction becomes too great, there is a risk that the skeletal blocks will become misaligned.

[0005] In this case, the earth pressure resistance can be increased by fastening the skeletal blocks together with fastening members or by making the skeletal blocks larger, but this reduces the ease of assembly at the site and reduces the freedom of design.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a storage tank that has high assembly workability, high design freedom, and excellent earth pressure resistance. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the storage tank according to the present invention is characterized by the following (1) to (8). (1) A storage tank having a skeletal block structure having a rectangular shape in plan view, the skeletal block structure being formed by stacking a plurality of block layers vertically, The blocking layer is A lower block assembly in which a plurality of skeletal blocks are adjacent to each other in a horizontal direction; an upper block assembly in which a plurality of skeleton blocks are horizontally adjacent to each other and joined to the lower block assembly at a plurality of joints; having The outer edge of the lower block assembly or the upper block assembly constituting the block layer is A storage tank, in which the four corners are formed from n-connected serial skeletal blocks in which n or more of the joints are arranged at intervals to form a straight line, or n-connected right-angled skeletal blocks in which n or more of the joints are arranged at intervals to form a right-angled shape, where n is an odd number of 3 or more, and the four corners are connected directly or via a two-connected skeletal block in which two of the joints are arranged at an interval.

[0008] According to the storage tank of the above configuration (1), the lower block assembly or the upper block assembly is composed of n-connected serial skeletal blocks in which n or more joints are arranged at intervals and extended in a straight line, or n-connected right-angled skeletal blocks in which n or more joints are arranged at intervals and formed at right angles. This makes it possible to increase the overall strength against earth pressure from the surroundings. In addition, since linear or right-angled skeletal blocks are used, the storage tank can be assembled more easily and has a higher degree of freedom in design than when skeletal blocks with a large area that are simply made longer in length and width are used.

[0009] (2) A storage tank as described in (1) above, wherein the inside of the outer edge of the lower block assembly or the upper block assembly that constitutes the block layer is composed of a plurality of four-connected rectangular skeletal blocks in which the four joints are arranged at intervals to form a rectangular shape.

[0010] According to the storage tank having the configuration (2) above, the inside of the outer edge of the lower block assembly or upper block assembly that constitutes the block layer can be constructed from a plurality of four-linked rectangular skeletal blocks formed into a rectangular shape with four joints arranged at intervals, thereby further improving assembly workability.

[0011] (3) The reservoir tank according to (1) above, wherein n is 3.

[0012] According to the storage tank of the above configuration (3), the lower block assembly or the upper block assembly is composed of three consecutive serial skeleton blocks or three consecutive right-angle skeleton blocks at the four corners of the outer edge of the block layer. This increases the overall strength of the storage tank against earth pressure from the surroundings, while allowing for ease of assembly and high freedom in design.

[0013] (4) The skeletal block structure has a rectangular hole portion in a plan view extending along a vertical direction, The edge of the hole in the lower block assembly or the upper block assembly constituting the block layer is The storage tank described in (1) above, wherein the four corners are formed from three connected serial skeletal blocks in which the three joints are spaced apart to form a straight line, or three connected right-angled skeletal blocks in which the three joints are spaced apart to form a right-angle, and the four corners are connected directly or via the two-connected skeletal blocks.

[0014] According to the storage tank having the above configuration (4), the lower block assembly or the upper block assembly is composed of three connected serial skeletal blocks or three connected right-angled skeletal blocks at the four corners of the edge of the hole in the block layer. This increases the strength of the entire storage tank and the hole against earth pressure from the surroundings, while allowing for ease of assembly and high freedom in design.

[0015] (5) A storage tank as described in (4) above, wherein the hole has a pressure resistance strength of at least five times the earth pressure acting horizontally.

[0016] According to the storage tank having the above configuration (5), the hole portion can have high pressure resistance against earth pressure acting in the horizontal direction.

[0017] (6) The storage tank according to (4) above, wherein a reinforcing frame is provided around the inner edge of the hole in the circumferential direction.

[0018] According to the storage tank having the configuration of (6) above, by providing a reinforcing frame in a location where the compressive strength is 5 times or less the earth pressure due to the deep burial depth into the ground, it is possible to sufficiently ensure compressive strength against earth pressure around the hole.

[0019] (7) The joint is a support body formed on the skeletal block constituting the lower block assembly or the skeletal block constituting the upper block assembly; a fitting hole formed in the skeletal block constituting the upper block assembly or the skeletal block constituting the lower block assembly, into which the support body is fitted; The storage tank according to any one of (1) to (6) above,

[0020] According to the storage tank having the above configuration (7), the skeletal blocks constituting the lower block assembly and the skeletal blocks constituting the upper block assembly can be easily assembled to form the block layer by fitting the supports into the fitting holes, thereby further improving the ease of assembly.

[0021] (8) The joint is A columnar member; fitting holes formed in the skeletal blocks constituting the lower block assembly and the skeletal blocks constituting the upper block assembly, into which ends of the columnar members are respectively fitted; The storage tank according to any one of (1) to (6) above,

[0022] According to the storage tank having the above configuration (8), the skeletal blocks constituting the lower block assembly and the skeletal blocks constituting the upper block assembly can be easily assembled to form a block layer by fitting the columnar members into the fitting holes. Also, the height of the block layer can be easily adjusted by changing the length of the columnar members. Effect of the Invention

[0023] According to the present invention, it is possible to provide a storage tank that has high assembly workability, high design freedom, and excellent earth pressure resistance.

[0024] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following description of the embodiment of the present invention (hereinafter, referred to as "embodiment") with reference to the accompanying drawings. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a schematic plan view of a storage tank according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along line BB in FIG. [Figure 4] FIG. 4 is a perspective view of a four-unit rectangular skeleton block. [Diagram 5] FIG. 5 is a perspective view of a triple-connected skeletal block. [Figure 6] FIG. 6 is a perspective view of a triple-connected skeletal block. [Figure 7] FIG. 7 is a perspective view of a two-piece skeleton block. [Figure 8] FIG. 8 is a schematic plan view showing an arrangement pattern of lower block assemblies that constitute a block layer. [Figure 9] FIG. 9 is a schematic plan view showing an arrangement pattern of upper block assemblies that constitute a block layer. [Figure 10] FIG. 10 is a schematic plan view showing an arrangement pattern of lower block assemblies that constitute a block layer of a skeletal block structure that is not provided with holes. [Figure 11] FIG. 11 is a schematic plan view of a five-unit right-angled skeleton block. [Figure 12] FIG. 12 is a schematic plan view of a five-unit right-angled skeleton block. [Figure 13] FIG. 13 is a schematic plan view showing an arrangement pattern of a lower block assembly using five consecutive right-angled skeletal blocks. [Figure 14] FIG. 14 is a cross-sectional view of a skeleton block structure provided with a reinforcing frame, taken along line BB in FIG. [Figure 15] FIG. 15 is a schematic vertical sectional view illustrating another example of the structure of the joint portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0027] The storage tank is typically installed in a water storage space provided in a water storage facility that stores river water, rainwater, etc. underground. Such a water storage space is formed, for example, by digging into the ground and covering the inner surface of a recess having a rectangular parallelepiped shape or the like with a lining layer. As the lining layer, gravel, nonwoven fabric, waterproof sheet, etc. may be used. In this example, a waterproof sheet is used as the lining layer.

[0028] As shown in Figs. 1 to 3, the storage tank 100 is composed of a skeletal block structure 1 having a rectangular shape in plan view. The periphery of this skeletal block structure 1 is surrounded by an outer peripheral wall 2 made of resin. Furthermore, the skeletal block structure 1 has a hole 3 having a rectangular shape in plan view along the vertical direction in the center. This hole 3 is, for example, an inspection hole for an operator to perform inspection and maintenance. Furthermore, the skeletal block structure 1 is provided with spaces (not shown) such as an inlet space and an outlet space as necessary. These spaces are formed by partitioning with a partition block (not shown).

[0029] The skeletal block structure 1 is formed by vertically stacking a plurality of block layers 5. In the example shown in Figures 2 and 3, the skeletal block structure 1 is formed from three block layers 5.

[0030] Each block layer 5 has a lower block assembly 6A and an upper block assembly 6B. The block layer 5 is formed by stacking the lower block assembly 6A and the upper block assembly 6B vertically and joining them at multiple joints 7. The lower block assembly 6A and the upper block assembly 6B are formed by horizontally arranging multiple resin skeletal blocks 10 adjacent to each other.

[0031] In this way, the skeletal block structure 1 is constructed by stacking block layers 5, each of which is made up of a lower block assembly 6A and an upper block assembly 6B each of which is made up of a plurality of skeletal blocks 10. According to the storage tank 100 made up of this skeletal block structure 1, the volume can be easily expanded by increasing the number of skeletal blocks 10 installed.

[0032] In the present embodiment, the skeleton block structure 1 constituting the storage tank 100 having the above-described structure uses, as the skeleton blocks 10, a four-connected rectangular skeleton block 10A, three-connected serial skeleton blocks 10B and 10C, and a two-connected skeleton block 10D.

[0033] Next, we will explain the four-connected rectangular skeleton block 10A, the three-connected series skeleton blocks 10B and 10C, and the two-connected skeleton block 10D. Note that the same components in the three-connected series skeleton blocks 10B and 10C and the two-connected skeleton block 10D as those in the four-connected rectangular skeleton block 10A will be denoted by reference numerals and will not be described.

[0034] (4-unit rectangular frame block 10A) As shown in Fig. 4, the 4-unit rectangular skeleton block 10A has a flat base 11 that has a square planar shape and parallel upper and lower surfaces. The base 11 is composed of, for example, a peripheral frame 12 that forms a square outer frame, and a plurality of ribs 13 that are integrally connected to the peripheral frame 12 in the inner space of the peripheral frame 12. Therefore, a plurality of grooves (through holes) 14 partitioned by adjacent ribs 13 are formed on the upper surface of the base 11.

[0035] Two identical truncated cone-shaped supports 15 are formed on the base 11, standing from the upper surface of the base 11 and tapering toward the tip. The base 11 also has two identical fitting holes 16 formed therein.

[0036] In plan view, the centers of the two supports 15 are located on one of a pair of diagonals of a square (hereinafter referred to as the "peripheral square") that is the peripheral shape of base 11, and the centers of the two fitting holes 16 are located on the other of the pair of diagonals of the peripheral square. In plan view, the two supports 15 and the two fitting holes 16 are arranged such that a "square with the two centers of the two supports 15 and the two centers of the two fitting holes 16 as its four corners" is "a square that is 0.5 times the peripheral square in both length and width."

[0037] (3-series skeletal block 10B) 5, the triple serial skeleton block 10B has a flat base 11 that is rectangular in plan view and has upper and lower surfaces that are parallel to each other, and has two supports 15 of the same shape and one fitting hole 16. The fitting hole 16 is formed in the center of the base 11 in the longitudinal direction, and the two supports 15 are formed at equidistant positions on both sides of the fitting hole 16 in the longitudinal direction of the base 11.

[0038] (3-series skeletal block 10C) 6, the triple serial skeleton block 10C has a flat base 11 that is rectangular in plan view and has upper and lower surfaces that are parallel to each other, and has one support 15 and two identically shaped fitting holes 16. The support 15 is formed in the center of the base 11 in the longitudinal direction, and the two fitting holes 16 are formed at equidistant positions on both sides of the support 15 in the longitudinal direction of the base 11.

[0039] (2-series skeleton block 10D) 7, the dual-unit skeleton block 10D includes a flat base 11 having a rectangular planar shape and parallel upper and lower surfaces, and has one support 15 and one fitting hole 16. The support 15 and the fitting hole 16 are formed in the base 11 at intervals in the longitudinal direction.

[0040] In the four-connected rectangular skeleton block 10A, the three-connected serial skeleton blocks 10B and 10C, and the two-connected skeleton block 10D configured as described above, the supports 15 and the fitting holes 16 adjacent to each other on the base 11 are all spaced at equal intervals.

[0041] The lower block assembly 6A constituting each block layer 5 is constituted by arranging a four-connected rectangular skeleton block 10A, three-connected serial skeleton blocks 10B and 10C, and a two-connected skeleton block 10D adjacent to each other horizontally.

[0042] In addition, the upper block assembly 6B that constitutes the block layer 5 is formed by stacking and arranging horizontally adjacent to the lower block assembly 6A an inverted four-connected rectangular skeletal block 10A, a three-connected serial skeletal block 10B, 10C, and a two-connected skeletal block 10D.

[0043] At this time, the supports 15 of the four-connected rectangular skeletal block 10A, the three-connected serial skeletal blocks 10B and 10C, and the two-connected skeletal block 10D constituting the upper block assembly 6B are fitted into the fitting holes 16 of the four-connected rectangular skeletal block 10A, the three-connected serial skeletal blocks 10B and 10C, and the two-connected skeletal block 10D of the lower block assembly 6A. Similarly, the supports 15 of the four-connected rectangular skeletal block 10A, the three-connected serial skeletal blocks 10B and 10C, and the two-connected skeletal block 10D constituting the lower block assembly 6A are fitted into the fitting holes 16 of the four-connected rectangular skeletal block 10A, the three-connected serial skeletal blocks 10B and 10C, and the two-connected skeletal block 10D of the upper block assembly 6B.

[0044] As a result, the upper and lower two tiers of four-connected rectangular skeletal blocks 10A, three-connected in-line skeletal blocks 10B and 10C, and two-connected skeletal block 10D are connected and fixed to each other at the locations where the supports 15 are fitted into the fitting holes 16, which form joints 7. A lower block assembly 6A and an upper block assembly 6B, which are assemblies of the upper and lower two tiers of four-connected rectangular skeletal blocks 10A, three-connected in-line skeletal blocks 10B and 10C, and two-connected skeletal blocks 10D, constitute each block layer 5 in the skeletal block structure 1.

[0045] Next, the arrangement patterns of the four-connected rectangular skeleton block 10A, the three-connected serial skeleton blocks 10B and 10C, and the two-connected skeleton block 10D that constitute the lower block assembly 6A and the upper block assembly 6B will be described. In addition, in Figures 8 and 9, black circles indicate supports 15, and white circles indicate fitting holes 16.

[0046] (Lower Block Assembly 6A) 8, the triple series skeleton blocks 10B and 10C are arranged at the four corners of the outer edge of the lower block assembly 6A. Specifically, at the four corners of the outer edge, the triple series skeleton block 10C or the triple series skeleton block 10B is arranged at a right angle to the side of the end of the triple series skeleton block 10B or the triple series skeleton block 10C.

[0047] Furthermore, of the four sides that form the outer edge of the lower block assembly 6A, on one pair of opposing sides, the triple-connected serial series skeletal block 10B and the triple-connected serial series skeletal block 10C are directly connected, and on the other pair of opposing sides, the triple-connected serial series skeletal block 10B and the triple-connected serial series skeletal block 10C are connected via the double-connected skeletal block 10D.

[0048] The lower block assembly 6A is configured such that the inside of the outer edge is made up of a plurality of four-connected rectangular skeletal blocks 10A. These four-connected rectangular skeletal blocks 10A are arranged so as to surround the periphery of the hole 3.

[0049] (Upper block assembly 6B) As shown in Fig. 9, the edge of the hole 3 of the upper block assembly 6B is composed of the triple series skeleton blocks 10B and 10C. Specifically, the triple series skeleton block 10C or triple series skeleton block 10B is butted against the side of the end of the triple series skeleton block 10B or triple series skeleton block 10C, and they are arranged at right angles to each other. As a result, the periphery of the hole 3 is surrounded by the triple series skeleton blocks 10B and 10C.

[0050] In the upper block assembly 6B, a plurality of four-connected rectangular skeleton blocks 10A are arranged around the three-connected serial skeleton blocks 10B and 10C that form the hole 3.

[0051] According to the storage tank 100 of this embodiment having the above structure, the lower block assembly 6A is composed of three consecutive serially connected skeletal blocks 10B, 10C at the four corners of the outer edge of the block layer 5. This increases the overall strength against earth pressure from the surroundings, while providing a storage tank with high assembly workability and design freedom.

[0052] Moreover, the upper block assembly 6B is also composed of three connected series-connected skeletal blocks 10B, 10C at the four corners of the edge of the hole 3 in the block layer 5. This increases the strength of the entire structure and the hole 3 against earth pressure from the surroundings.

[0053] Here, for example, if the lower block assembly 6A and the upper block assembly 6B of the block layer 5 are constructed by arranging four-connected rectangular skeletal blocks 10A in the same pattern, the joints of adjacent four-connected rectangular skeletal blocks 10A will coincide. Therefore, when a large earth pressure acts in the horizontal direction, there is a risk that the joints between the four-connected rectangular skeletal blocks 10A will be misaligned or opened, especially around the hole 3.

[0054] In contrast, according to this embodiment, by arranging the three series-connected skeletal blocks 10B, 10C at the four corners of the outer edge of the block layer 5 and the four corners of the edge of the hole 3, it is possible to provide the storage tank 100 with a pressure resistance strength of five times or more against the earth pressure acting in the horizontal direction. This makes it possible to suppress the misalignment and opening of the joints of the skeletal blocks 10 around the hole 3.

[0055] In the above embodiment, the edge of the hole 3 is formed only by the three-connected serial-line skeletal blocks 10B and 10C. However, when the area of ​​the hole 3 is large, the three-connected serial-line skeletal block 10B and the three-connected serial-line skeletal block 10C may be connected via the two-connected skeletal block 10D on the four sides that form the edge of the hole 3.

[0056] In the above embodiment, the reservoir 100 having the hole 3 is exemplified, but the reservoir 100 may not have the hole 3.

[0057] FIG. 10 shows an arrangement pattern of a four-connected rectangular skeleton block 10A, three-connected serial skeleton blocks 10B and 10C, and a two-connected skeleton block 10D in a lower block assembly 6A of each block layer 5 when no holes 3 are provided.

[0058] As shown in Fig. 10, in this arrangement pattern, the lower block assembly 6A has four corners at its outer edge composed of triple-connected series-connected skeleton blocks 10B and 10C, and the triple-connected series-connected skeleton blocks 10B and triple-connected series-connected skeleton blocks 10C are connected on each side directly or via a double-connected skeleton block 10D. The inside of the outer edge is composed of multiple quadruple rectangular skeleton blocks 10A. In the case of a storage tank 100 that does not have holes 3, the upper block assembly 6B may be composed of, for example, only multiple quadruple rectangular skeleton blocks 10A.

[0059] In this case too, by constructing the four corners of the outer edge of the lower block assembly 6A from three consecutive in-line skeletal blocks 10B, 10C, it is possible to create a storage tank that is easy to assemble and has a high degree of freedom in design while increasing the overall strength against earth pressure from the surrounding area.

[0060] In the above embodiment, the triple-connected series skeletal blocks 10B, 10C each having three joints 7 each made up of the support body 15 and the fitting hole 16 are arranged at the four corners of the outer edge, but the number of joints 7 is not limited to three. When the number of joints 7 is n, an n-connected skeletal block 10 may be used in which the number n of joints 7 is an odd number equal to or greater than 3 (n=an odd number equal to or greater than 3).

[0061] Next, a case will be described in which five-connected right-angled skeleton blocks 10E and 10F, each having a right-angled shape in plan view with the number n of joints 7 being five, are used instead of the three-connected series skeleton blocks 10B and 10C.

[0062] 11, the 5-connected right-angled skeleton block 10E includes a base 11 whose planar shape is a right angle, and has three identical supports 15 and two identical fitting holes 16. The three supports 15 are formed at the corners and both ends of the base 11, and the two fitting holes 16 are formed between the supports 15.

[0063] 12, the 5-unit right-angle skeleton block 10F includes a base 11 whose planar shape is a right angle, and has three identical fitting holes 16 and two identical supports 15. The three fitting holes 16 are formed at the corners and both ends of the base 11, and the two supports 15 are formed between the fitting holes 16.

[0064] 13, when using 5-connected right-angle skeletal blocks 10E, 10F, the 5-connected right-angle skeletal blocks 10E, 10F are arranged at the four corners of the outer edge of the lower block assembly 6A, and the 5-connected right-angle skeletal blocks 10E, 10F are connected to each other on each side via a 2-connected skeletal block 10D. Then, a plurality of 4-connected rectangular skeletal blocks 10A are arranged inside the outer edge of the lower block assembly 6A so as to surround the periphery of the hole 3.

[0065] The upper block assembly 6B is stacked on top of the lower block assembly 6A thus constructed and assembled to form the block layer 5. At this time, in the upper block assembly 6B, the edge of the hole 3 is formed of three consecutive serially connected skeletal blocks 10B, 10C, and a plurality of four consecutive rectangular skeletal blocks 10A are arranged around them (see FIG. 9).

[0066] In this way, even when the four corners at the edges of the lower block assembly 6A are formed using five-way right-angle skeletal blocks 10E, 10F, a storage tank can be created that has high assembly workability and design freedom while increasing the overall strength against surrounding earth pressure.

[0067] 14, for example, in a location where a large earth pressure acts because the tube is buried deep underground, a reinforcing frame 20 made of metal, for example, may be installed around the inner edge of the hole 3. It is preferable to install a plurality of reinforcing frames 20 at intervals in the vertical direction.

[0068] In this way, by installing the reinforcing frame 20 on the inner edge of the hole 3, the reinforcing frame 20 can further increase the pressure resistance of the hole 3. As a result, even in a location where the pressure resistance is 5 times or less the earth pressure because of deep burial depth, the reinforcing frame 20 can be installed to ensure sufficient pressure resistance against earth pressure.

[0069] In the above embodiment, the joints 7 for joining the skeletal blocks 10 together vertically are structured so that the support bodies 15 are fitted into the fitting holes 16. However, as shown in FIG. 15, the joints 7 may also be structured so that columnar members 26 covered with lids 25 on both ends are fitted into the fitting holes 16 formed in the base 11 for joining the skeletal blocks 10 together.

[0070] With the joints 7 having this structure, the skeletal blocks 10 constituting the lower block assembly 6A and the skeletal blocks 10 constituting the upper block assembly 6B can be easily assembled to form the block layer 5. Also, by changing the length of the columnar members 26, the height of the block layer 5 can be easily adjusted.

[0071] In the above embodiment, the arrangement pattern of the skeletal blocks 10 in the lower block assembly 6A and the upper block assembly 6B constituting the block layer 5 may be reversed. In other words, the arrangement pattern of the skeletal blocks 10 in the lower block assembly 6A may be applied as the arrangement pattern of the skeletal blocks 10 in the upper block assembly 6B, and the arrangement pattern of the skeletal blocks 10 in the upper block assembly 6B may be applied as the arrangement pattern of the skeletal blocks 10 in the lower block assembly 6A.

[0072] The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, etc. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary as long as the present invention can be achieved, and are not limited.

[0073] Here, the features of the storage tank according to the embodiment of the present invention described above will be briefly summarized and listed in the following [1] to [8]. [1] A storage tank (100) made of a skeletal block structure (1) having a rectangular shape in a plan view, the skeletal block structure (1) being formed by stacking a plurality of block layers (5) in a vertical direction, The blocking layer (5) is A lower block assembly (6A) in which a plurality of skeletal blocks (10) are horizontally adjacent to each other; an upper block assembly (6B) in which a plurality of skeleton blocks (10) are horizontally adjacent to each other and joined to the lower block assembly (6A) at a plurality of joints (7); having The outer edge of the lower block assembly (6A) or the upper block assembly (6B) constituting the block layer (5) is A storage tank in which the four corners are formed by n-connected serial skeletal blocks (3-connected serial skeletal blocks 10B, 10C) in which n or more of the joints (7) are arranged at intervals to form a straight line, or by n-connected right-angled skeletal blocks (5-connected right-angled skeletal blocks 10E, 10F) in which n or more of the joints (7) are arranged at intervals to form a right angle, where n is an odd number of 3 or more, and the four corners are connected directly or via a 2-connected skeletal block (10D) in which two of the joints (7) are arranged at an interval.

[0074] [2] A storage tank as described in [1] above, wherein the inside of the outer edge of the lower block assembly (6A) or the upper block assembly (6B) constituting the block layer (5) is composed of a plurality of four-connected rectangular skeletal blocks (10A) in which four of the joints (7) are arranged at intervals to form a rectangular shape.

[0075] [3] The storage tank described in [1] or [2] above, wherein n is 3.

[0076] [4] The skeletal block structure (1) has a rectangular hole (3) in a plan view extending along a vertical direction, The edge of the hole (3) in the lower block assembly (6A) or the upper block assembly (6B) constituting the block layer (5) is The storage tank according to any one of [1] to [3] above, wherein the four corners are formed from three connected serial skeletal blocks (10B, 10C) in which the three joints (7) are arranged at intervals to form a straight line, or three connected right-angled skeletal blocks in which the three joints (7) are arranged at intervals to form a right-angled shape, and the four corners are connected directly or via the two-connected skeletal blocks (10D).

[0077] [5] The storage tank described in [4] above, wherein the hole (3) has a pressure resistance strength of at least five times the earth pressure acting horizontally.

[0078] [6] A storage tank as described in [4] or [5] above, wherein a reinforcing frame (20) is provided around the inner edge of the hole (3) in the circumferential direction.

[0079] [7] The joint (7) is a support (15) formed on the skeleton block (10) constituting the lower block assembly (6A) or the skeleton block (10) constituting the upper block assembly (6B); a fitting hole (16) formed in the skeletal block (10) constituting the upper block assembly (6B) or the skeletal block (10) constituting the lower block assembly (6A), into which the support body (15) is fitted; The storage tank according to any one of the above [1] to [6],

[0080] [8] The joint (7) is A columnar member (26); fitting holes (16) formed in the skeletal blocks (10) constituting the lower block assembly (6A) and the skeletal blocks (10) constituting the upper block assembly (6B), into which ends of the columnar members (26) are respectively fitted; The storage tank according to any one of the above [1] to [6], [Explanation of symbols]

[0081] 1 Skeletal Block Structure 3 Hole 5 Block Layer 6A Lower Block Assembly 6B Upper block assembly 7 Joint 10 Skeleton Block 10A 4-unit rectangular skeletal block (skeletal block) 10B, 10C 3-series series skeleton block (n-series series skeleton block) 10D Double Skeleton Block (Skeletal Block) 10E, 10F 5-series right-angle skeletal block (n-series right-angle skeletal block) 15 Support 16 Mating Hole 20 Reinforcement frame 26 Columnar member 100 Reservoir

Claims

1. A storage tank made of a skeletal block structure having a rectangular shape in a plan view, the skeletal block structure being configured by stacking a plurality of block layers vertically, The blocking layer is a lower block assembly in which a plurality of skeletal blocks are adjacent to each other in a horizontal direction; an upper block assembly in which a plurality of skeleton blocks are horizontally adjacent to each other and joined to the lower block assembly at a plurality of joints; having The outer edge of the lower block assembly or the upper block assembly constituting the block layer is When n is an odd number of 3 or more, the four corners are formed of n-connected serial skeletal blocks in which n or more of the joints are arranged at intervals to form a linear shape, or n-connected right-angled skeletal blocks in which n or more of the joints are arranged at intervals to form a right-angled shape, and the four corners are connected directly or via two-connected skeletal blocks in which two of the joints are arranged at intervals. Reservoir.

2. The inside of the outer edge of the lower block assembly or the upper block assembly that constitutes the block layer is composed of a plurality of four-connected rectangular skeletal blocks in which the four joints are arranged at intervals to form a rectangular shape. The reservoir of claim 1 .

3. wherein n is 3; The reservoir of claim 1 .

4. The skeletal block structure has a rectangular hole in a plan view extending along a vertical direction, The edge of the hole in the lower block assembly or the upper block assembly constituting the block layer is The four corners are formed from three connected serial skeletal blocks in which the three joints are arranged at intervals to form a straight line, or three connected right-angled skeletal blocks in which the three joints are arranged at intervals to form a right-angled shape, and the four corners are connected directly or via the two-connected skeletal blocks. The reservoir of claim 1 .

5. The hole has a pressure resistance strength of 5 times or more the earth pressure acting in the horizontal direction. The reservoir according to claim 4.

6. A reinforcing frame is provided around the inner edge of the hole in the circumferential direction. The reservoir according to claim 4.

7. The joint is a support body formed on the skeletal block constituting the lower block assembly or the skeletal block constituting the upper block assembly; a fitting hole formed in the skeletal block constituting the upper block assembly or the skeletal block constituting the lower block assembly, into which the support body is fitted; It is composed of: A reservoir according to any one of claims 1 to 6.

8. The joint is A columnar member; fitting holes formed in the skeletal blocks constituting the lower block assembly and the skeletal blocks constituting the upper block assembly, into which ends of the columnar members are respectively fitted; It is composed of: A reservoir according to any one of claims 1 to 6.

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