KR101277086B1 - Fabrication rain water manhole and the method of construction - Google Patents

Abstract

PURPOSE: A prefabricated type rainwater reservoir tub and a construction method thereof are provided to facilitate maintenance by enabling the access to large equipment and to maximize a rainwater reservoir rate per unit volume. CONSTITUTION: A prefabricated type rainwater reservoir tub(1) construction method comprises the following steps: inserting an anchor bolt into each bolt insertion hole formed in the lower side of an external column block, a center column block, and a corner column block for fixing the anchor bolt to the foundation concrete; connecting the joint members of an upper joint block for inserting into a T-shaped grooved part, a +-shaped grooved part, and a Γ-shaped grooved part formed on the column blocks through a T-shaped jig, a +-shaped jig, and a Γ-shaped jig and filling mortar; pouring concrete by connecting a reinforcement re-bar to a re-bar formed in the lower end of the column blocks; and assembling a finishing block(14) to an insert nut formed in the external column block and center column block for stretching and fixing by a high strength steel wire through the through-hole of the finishing block.

Description

Prefabricated rainwater storage tank and its construction method {FABRICATION RAIN WATER MANHOLE AND THE METHOD OF CONSTRUCTION}

The present invention is a prefabricated rainwater storage tank and its construction method installed in the area of immersion concerns during heavy rains and floods, the width and the width according to the plan rainwater freely assembled, easy to transport, easy construction and economical rainwater storage tank It is an excellent storage facility that can prevent inundation and recycling of rainwater in the habitually flooded areas according to the provision of the product.It is composed of an outer pillar block, corner pillar block, middle pillar block, upper connecting block, and finishing block. The formed grooves are designed to solve the construction problems caused by the deformation dimensions of large prefabricated PC members by maximizing the workability according to the provision of construction guide lines and the tolerance of the dimensions by separate connecting members, and to maximize the stability under the temporary condition. will be.

Recently, due to abnormal weather, local showers and typhoons have caused frequent damages such as flooding due to heavy rains beyond the existing design rainfall and various natural disasters such as collapse of the banks. As part of its protection measures, developed countries overseas have been providing various structures to reduce natural disasters through the installation of underground reservoirs to store a certain amount of water during flooding. In Korea, social interest in flood abatement facilities has risen for many years, and three to five kinds of facilities have recently been installed and constructed in Korea.

However, the conventional technologies such as BOX type, girder type, cell type, half PC type, etc. are being provided, but the structural characteristics make it difficult to transport and stability as a large structure. Is being raised.

In addition, many problems are inherent in construction as a large structure. Therefore, as a conventional technology, Korean Patent 10-0582121 is a technique for superimposing the use of a plate in a BOX-type structure, and the flow rate of the inside is more advantageous than the existing box shape, but the structure is limited by the height limitation according to the site conditions. There is a limit to securing a large amount of capacity by being constructed in and there are many problems in manufacturing transportation. Therefore, the construction is improved, safe and economical excellent storage tank is required.

More specifically, the prior art, Korean Patent No. 0938223 is an excellent reservoir consisting of a stand block, an upper block, a lower block, and a side block, and a sliding plate and a height-adjustable bolt at the bottom of the block are finely adjustable. Due to the technology of rainwater storage tank used and many partition walls installed inside the storage tank, the structure is vulnerable to economic efficiency. Korean Patent 10-0485742 is characterized by a box structure and a filter system, but unnecessary by a box structure during construction. It is economical because a large amount of concrete wall is applied, and also, there is a problem in that it is impossible to transport when manufacturing a sphere having a height of 3.5M or more in a structurally integrated shape.

In addition, Japanese Patent Laid-Open No. 6-272291 is a technique related to a method of speaking a top plate member on a quadrilateral main column, which has excellent workability depending on the terrain, but is a box-shaped structure that can be restricted in size due to transportation. The non-economic component of the speech is inherent.

Japanese Patent Laid-Open No. 6-272289 is an improved patent of Japanese Patent Laid-Open No. 6-272291, which is designed to be installed at a high height according to site conditions, and is designed in a c-shape. It is characterized in that it is designed to be transported, installed after dividing. Recently, there is a limit in constructability due to structural limitations due to the trend of larger storage volume due to the increase of rainfall.

In addition, Japanese Patent Application Laid-Open No. 6-299591 is an excellent storage tank which is assembled in a c-type, an i-type, a corner-type, etc., and is easy to carry and store by various accessories, and has a low construction cost and good workability, It is a technique related to providing excellent storage tank structurally excellent horizontal strength and the like. There are inherent problems such as increased initial investment cost and maintenance cost due to complicated accessories and the inability to provide extra large structures.

Japanese Patent Laid-Open No. Hei 8-41958 is characterized in that the upper slab is mounted on the top of the c-shaped spheres facing each other, and the bottom surface is assembled by the middle connection part, and then assembled into a BOX-shaped sphere. However, there is a limitation in providing technology due to limited width and height when providing a large storage facility.

Japanese Patent Application Laid-Open No. 2005-320845 is a structure for laminating by using multiple floor panels, ceiling panels, wall panels, and circular pillars. Japanese Patent No. 2012-57442 discloses an alluvial structure as an excellent storage tank for infiltrating rainwater into a reservoir or soil as a structure having low anisotropy against earth pressure and low manufacturing cost. It is a structure that can provide rainwater storage layer constituent member with high porosity of the sphere and rainwater penetration system that increases the underground reduction rate of rainwater using the same. It is a permeable hollow body that is durable even under the compressive load of people and vehicles after landfill. It is a matter of excellent reservoir.

The present invention is a large structure, which is the most problematic in the prior art, it is impossible to transport and the non-economic problems caused by the overlapping of the spheres installed on the inner surface and the structural properties are installed at a limited height, such as the need for securing a large amount of land area, etc. It is a technology created to solve the problem.

Although not described, it was created to solve other problems, and the present invention can be constructed according to site conditions, and is a technology for providing excellent storage tanks with excellent economic efficiency by smoothly carrying and maximizing internal storage space. It consists of outer pillar block, corner pillar block, middle pillar block, upper connection block, and finishing block.

The upper surface of the outer pillar block, corner pillar block, intermediate pillar block is formed with the main portion (), 十 type, a type, etc. for smooth construction and stable assembly with the upper connection block that is addressed according to each member , Both ends of the upper connection block is embedded with a steel connecting member is constructed to improve the workability by eliminating in advance that it is impossible to assemble by the change of dimensions in the large prefabricated structure.

In addition, the construction is improved by providing a structure that can be transported and adjustable in width and height according to the site conditions, consisting of a column type and a plate type, and a large amount of excellent quality by providing a small amount of structure by maximizing internal storage capacity. It is designed for the purpose of providing a prefabricated concrete storage tank that can be completely stored, and is easy to maintain the maintenance cost by securing the internal space that can completely solve the conventional technical problems.

In order to achieve the above object, the present invention is a prefabricated structure, the outer pillar block is installed on the outside of the T-shaped recessed portion is formed in the upper portion, the T-shaped recessed space is formed so that one end surface of the upper connecting block is speech. It is. In addition, the lower end is characterized in that the bolt connection groove is formed to be fixed by the steel anchor bolt embedded in the foundation concrete, the outer surface is characterized in that the insert nut is embedded to enable the speech of the panel-like plate.

In addition, the corner pillar block of the present invention is a structure that is installed at each corner of the storage tank is formed on the top surface of the corner block a-shaped recess formed in the a-shape, the a-shaped recess is formed in the space so that the upper connection block can be speech It is. The lower end portion is formed with a bolt connection groove to be fixed by the steel anchor bolt embedded in the foundation concrete surface, the outer surface is characterized in that the insert nut is embedded to enable the panel-like finishing block can be spoken.

In addition, the middle column block of the present invention is a column block to be installed in the rainwater storage tank to be installed in the upper surface of the middle pillar block is formed with a dove-shaped recess consisting of 十 shape, the twelfth recess is the upper connection block The space is formed to allow speech, and the lower end of the intermediate connection block is characterized in that the bolt connection groove is formed to be fixed by the steel anchor bolt embedded in the foundation concrete.

 In addition, the present invention is provided with an upper connection block for fixing the pillars and pillars and the speech of the finishing block is installed on the upper side of the upper connection block is connected to the steel plate or round bar on both ends and the top of each column T-shaped recesses, a-shaped recesses, 十 recesses formed in the fixed to each pillar is characterized in that the speech with the upper connection block is possible.

And the outer surface and the upper surface of the rainwater storage tank of the present invention is provided with a plate-shaped finishing block on the outer surface of the outer column block, corner pillar block, middle column block, the upper connection block, which is installed on the outer surface of the closing block two The above protrusions are formed and the protrusions are reinforcing protrusions for enhancing durability. At the same time, it is a technology provided to improve the assembly performance of the entire structure by addressing and tensioning the steel high tension steel wire with a circular groove formed inside the protrusion after the whole construction, and the conventional technologies are installed by installing the steel wire connector at one end of the main body. In the long term, these conventional techniques may provide a cause of the cracking of the sphere. Therefore, the configuration of the present invention is to provide a technology capable of addressing the steel high-tensile steel wire to the outside, it was created to ensure long-term stability.

 In addition, bolt connecting grooves are formed on both sides of the finishing block according to the present invention so that each pillar block and speech can be formed, and upper and lower surfaces are provided with recesses and convex portions to guide leakage prevention or improve workability. Is provided, one end surface of the recess is characterized in that configured to enable the installation of a water repellent for preventing leakage by water pressure.

And in the construction, the anchor bolt is installed at the position where each pillar block is to be addressed in the foundation ball of the storm storage tank of the present invention and the outer pillar block, corner pillar block, intermediate pillar block is installed on the anchor bolt. T-shaped recesses, a-shaped recesses, 十 recesses formed on the upper portion of the upper connection block is spoken. At this time, insert the T-shaped jig, a-shaped jig, the t-shaped jig to the t-shaped jig, the a- jig, the t-jig to connect and fix the connection member made of steel plate or round bar formed at both ends of the upper connection block. To finish the remaining space of the T-shaped recesses, A-shaped recesses, dozens of recesses with mortar, the connecting members made of steel plate or round bar formed at both ends of the upper connecting block can be assembled to any dimensional change. It was created. This is because the conventional large structures have a number of problems in construction as a structure that can not be assembled according to the dimensional error, it is characterized by the invention to solve the problem that can not be conventionally installed by the dimensional error through the technical provision of the present invention.

Finally, an external finishing block is installed on each of the pillars and the upper connection block assembled by the provided technology, and after installation of the external finishing block, the external finishing block is tensioned with a high-strength steel wire through two or more steel wire connections inside the protrusions installed on the outer surface of the external finishing block. The stability of the whole sphere was doubled.

In addition, the one end surface of the external finishing block was created to provide a variety of functions depending on the site conditions, such as inlet or outlet, ventilation, power supply, vehicle entrance, etc. that can be rainwater from the outside. After assembling as described above, it is possible to install various index materials or coating agents to increase the watertightness of the sphere, and according to the site conditions, it is characterized by finishing the additional facilities for water leakage.

According to the present invention there is an effect that the height can be adjusted through the provision of a rectangular column shape in order to solve the height constraints inherent in the conventional box type in installing the excellent storage tank.

In addition, the superposition of various columns and plates installed inside the conventional storage tank eliminates uneconomic problems and the capacity reduction of the excellent storage due to the overlapping plates applied to the interior of the conventional storm storage tank, thereby providing excellent capacity per unit volume. It is possible to maximize the amount of storage, so that the maximum storage is possible due to the minimum facilities, and it is possible to maximize the convenience of maintenance by enabling the entry and exit of large equipment for maintenance of internal cleaning.

In addition, while the construction of the prior art has many problems in construction due to the dimensional deviation, the present invention solved the construction problem by the dimensional deviation using a separate jig, using the recess formed on the top of each pillar block It is characterized in that the stability is improved by preventing the fall or fall of the upper sphere during construction, to solve the stability problems when assembling and installing the conventional rainwater storage tank and more economical by providing a rainwater storage tank that can be various construction depending on the limited space As an excellent storage tank, it has not only satisfactory function but also stability, and it is effective to improve long-term durability by external wire speech method.

1 is a perspective view showing an embodiment of the installation of the storm storage tank according to the present invention.
Figure 2 is an outer cylinder block according to the present invention, Figure 2a is an outer column block side view, Figure 2b is an outer column block front view, Figure 2c is an external column block front perspective view, Figure 2d is an outer column block rear view, Figure 2e 2F is a plan view showing the upper surface of the outer pillar block.
3 is a middle column block according to the present invention, Figure 3a is a front view of the middle column block, Figure 3b is a side view (left: right symmetry) of the middle column block, Figure 3c is a perspective view of the middle column block, Figure 3d is an intermediate Top view showing the upper surface of the pillar block.
4 is a corner pillar block according to the present invention, Figure 4a is a front view of the corner pillar block, Figure 4b is a rear view of the corner pillar block, Figure 4c is a perspective view of the corner pillar block, Figure 4d is a top surface of the corner pillar block It is a top view showing.
5 is a top connecting block according to the present invention, Figure 5a is a top connection block plan view, Figure 5b is a left side (right) side view of the upper connection block, Figure 5c is a front view of the upper connection block, Figure 5d is a perspective view of the upper connection block.
6 is a finish block according to the present invention, Figure 6a is a front view of the finish block, Figure 6b is a plan view of the finish block, Figure 6c is a side view (left and right symmetry) of the finish block, Figure 6d is a perspective view of the finish block. .
Figure 7 is a detailed view showing each column connecting block according to the present invention, Figure 7a is a detailed view of the intermediate column block connection, Figure 7b is a detailed view of the outer column block connection, Figure 7c is a detailed view of the corner column block connection, 7d Exemplarily shows finishing the remaining space of the connection part with mortar.
8 is an assembled plan view of the storm storage tank according to the present invention, (8a) is an installation example of the intermediate pillar block, (8b) is an installation example of the outer pillar block, (8c) is an installation example of the corner pillar block.
9 is an example of the assembled front view of the storm storage tank according to the present invention
10 is an assembled perspective view of the storm storage tank according to the present invention
11 is a detailed view connecting the lower end of each pillar block according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing an embodiment of the rainwater storage tank 1 according to the present invention, the rainwater inlet 30 on the upper surface and the side of the finishing block 14 constituting the rainwater storage tank (1) And as an example of the assembly showing the excellent outlet 20 is a structure that can be further speech of the additional facilities, such as the vehicle entrance depending on the site conditions.

2 is an outer column block 10 of the rainwater storage tank 1 according to the present invention, the upper end surface and the lower end surface of the rectangular shape is wider cross-sectional shape than the main column T-shaped recess in the upper cross section The upper connection block 13 was formed to enable speech by forming a 40, and a lower bolt anchoring groove 80 capable of speaking with the steel anchor bolt 50 installed in the base installed on the bottom is formed on the bottom surface. have.

The insert nut 60 is embedded in the rear portion of the outer pillar block 10 of FIGS. 2D and 2E so that the finishing block 14 becomes a speech.

In addition, although not shown at the lower end of the outer pillar block 10, exposed reinforcement is installed on one end of the lower end, and when the floor concrete is laid, it is constructed so that the connection with the foundation floor is increased by laying a separate reinforcing bar.

3 is installed in the rainwater storage tank 1 as the middle pillar block 11 according to the present invention, and a dove shape recessed part 70 is formed on one end surface of the upper surface in a rectangular shape to form east, west, south, A space is formed so that one end surface of the upper connection block 13 can be mounted and assembled to the north, and a bolt connection is provided at the lower end of the intermediate pillar 11 to allow the steel anchor bolt 50 embedded in the foundation to be speeched. The groove 80 'is formed.

In addition, although not shown on one end surface of the lower end portion, it is also a structure that can be manufactured by embedding reinforcing bars in the lower end of the intermediate pillar block 11 for the durability of the foundation.

4 is a corner pillar block 12 which is installed in the corner portion of the rainwater storage tank 1 according to the present invention, the upper end surface is formed with the a-shape recessed portion 90, the upper connection block on the a-shape recessed portion 90 (13) is configured to be able to speak, the lower portion of the corner pillar block 12 is formed with anchor bolt 50 installed on the base floor and the bolt connection groove (80 ") that can be speech is formed to be fixed with the foundation In addition, as shown in the rear perspective view of Fig. 4c, an insert nut 60 'is built in so that the closing block 14 can speak.

5 is a top connecting block 13 according to the present invention is configured to be attached by attaching a closing block 14 to the top of the top connecting block 13 to be addressed to each of the pillar blocks 10, 11, 12. On both ends of the upper connection block 13, the connecting member 100, such as steel plate or round bar, is embedded in the structure capable of manufacturing, and the T-shaped recesses formed on the tops of the column blocks 10, 11 and 12 are manufactured. 40, the trough recess 70, the a-shaped recess 90, the end of the upper connecting block 13 is inserted into the connecting member 100 formed at the end of the upper connecting block 13 T-shaped jig 180 , 十 jig 160, a-type jig 190 is configured to enable connection.

In addition, an insert nut 60 ″ is embedded in the upper portion of the upper connection block 13 so that the closing block 14 can be speeched.

6 is a finish block 14 installed on the outer surface during installation of the rainwater storage tank 1 according to the present invention by minimizing the production process by producing the same side and upper portion in the same shape, both ends of the finish block 14 There is a bolt connection groove 110 is formed in each pillar block 10, 11, 12 so that the speech is possible, as shown in Figure 6c side view, the upper portion of the recess 120, the lower portion of the iron portion 130 ), Which is intended to improve construction and watertightness.
And although not shown in the general technology, it is a structure that can be installed, such as a water repellent material for a separate order in the speech position of the recessed portion 120 and the convex portion 130, which is a joint cross-section.

In addition, the protrusion 140 formed on the outer surface of the finishing block 14 is a reinforcing protrusion for enhancing the durability of the sphere and at the same time, the conventional structure is provided by installing a steel wire that can be reinforced reinforcement speech on one side of the product structural There is a problem in that the cracks, etc., the present invention was configured to enable the durability and installation of steel wires by installing a protrusion 140 on the outside so as not to damage the entire structure inside the sphere.

In addition, the reference numeral 150 of FIG. 6 represents an installation groove for connecting the PC steel wire, the installation groove 150 of the steel wire according to the site conditions is a structure that can be manufactured in various ways.

7 is an exemplary view showing that the upper connecting block 13 is spoken on the upper part of the intermediate pillar block 11, the corner pillar block 12, and the outer pillar block 10 according to the present invention, and FIG. It shows that the upper connection block 13 is extended to the east, west, south, and north to the trough recess 70 formed on the upper portion of the block 11, and the upper connection block 13 is assembled into a twelve shape. Shows connecting the connection member 100 by the 十 jig 160 is configured to fill the remaining space with the mortar 170 after assembly.
FIG. 7B is an exemplary view showing that the upper connection block 13 is spoken to the T-shaped recess 40 formed at the upper portion of the outer pillar block 10, and the upper connecting block is delivered to the upper portion of the outer pillar block 10. After connecting the connection member 100 formed at both ends of the (13) with the T-shaped jig 180 is configured to fill the remaining space with the mortar (170).
FIG. 7C is a detailed view of the connecting portion illustrating that the upper connecting block 13 is assembled to the 'A' shape on the 'A' recessed portion 90 formed on the upper surface of the corner pillar block 12. After connecting the connecting member 100 formed at both ends of the upper connecting block 13 to the a-shaped jig 190 is configured to fill the remaining space with the mortar (170).
And 十 jig 160, T-shaped jig 180, a-shaped jig 190 made of the iron plated to prevent corrosion, the connection of the steel plate or the iron bar formed on both ends of the upper connection block 13 The member 100 is a structure in which the twiddle jig 160, the T jig 180, and the a j jig 190 are assembled by bolts or welding with each other. It is characterized by being configured to be able to assemble in a certain dimensional deviation by eliminating this impossible.
In addition, Figure 7d is connected to the end of the upper connecting block 13 to the T-shaped recesses 40, twelve recesses 70, a-shaped recesses 90 formed on the upper surface of each pillar (10) (11) (12) After the members 100 are addressed to each other by the jig 180, the twelve jig 160, and the a j-type jig 190, the remaining space is filled with mortar 170.

8 is an exemplary view of the installation plane of the storm storage tank (1) according to the present invention, an illustration for a more detailed description of the installation of each pillar block and at the same time as an illustration of the installation complete state, of Figure 8 (8c) ) Is an assembly perspective view of the corner pillar block 12, 8b is an assembly perspective view of the outer pillar block 10, and 8a is an assembly perspective view of the intermediate pillar block 11.

And circular rainwater inlet 30 of the perforated to the finishing block 14 is a structure that can be variously applied according to the site conditions.

9 is an installation front view illustrating the assembled state of the rainwater storage tank 1 according to the present invention and the rainwater outlet 20 is a structure that can be variously adapted to the site conditions as a through-hole to discharge a certain amount of rainwater.

10 is a perspective view showing a state in which the rainwater storage tank 1 according to the present invention is assembled.

11 is an exemplary view of installing the lower end of each pillar block (10, 11, 12) in accordance with the present invention on the base concrete 220, reinforcement on the one side of the lower end of each pillar block (10, 11, 12) 200 is an exemplary view of the foundation floor to form and then reinforced with a separate reinforcing bar 230 and finishing with concrete 210.

Although the present invention having been described above has been described with reference to a limited number of embodiments, it is to be understood that the present invention is not limited thereto and that various changes and modifications may be made without departing from the spirit and scope of the present invention by those skilled in the art. Various modifications and variations are possible within the scope of the appended claims.

1: Excellent storage tank 10: External pillar block
11: Middle pillar block 12: Corner pillar block
13: upper connection block 14: finishing block
20: rainwater outlet 30: rainwater inlet
40: T-shaped recessed part 50: Anchor bolt
60: insert nut 70: twelve
80: bolt connection groove 85: through hole
90: a-shaped recess 100: connecting member
110: bolt connection groove 120: main part
130: iron portion 140: protrusion
150: installation groove 160: 十 jig
170: mortar 180: T-shaped jig
190: A-shaped jig 200: Reinforcement speech
210: concrete 220: foundation concrete
230: rebar

Claims (7)

Anchor bolts 50 embedded in the foundation concrete 22 are bolted connection grooves 80 and 80 'formed at the bottom of the outer pillar block 10, the middle pillar block 11, and the corner pillar block 12, respectively. 80 ") and the T-shaped recesses 40, 十 -shaped recesses 70, and A-shaped recesses formed on the upper surface of the outer pillar block 10, the middle pillar block 11, and the corner pillar block 12. Inserting the ends of the upper connection block 13 to the 90, respectively, connected to the T-shaped jig 180, 十 jig 160, a-shaped jig 190, each pillar block (10) (11) (12) T-shaped recesses 40, 十 recesses 70, and a-shaped recesses 90, which are connected to the upper connecting block 13, are filled with mortar 170, and the outer pillar block 10 and the corner pillar block 12 are connected to each other. ), The finishing block 14 is formed on the outer surface of the upper connection block 13 by insert nuts 60, 60 ′ and 60 ″, and a protrusion 140 formed outside the finishing block 14. After the high strength steel wire is tensioned and fixed into the through hole 85 of the Good prefabricated, characterized in that configured by a perforated inlet 30 reservoir. The method of claim 1,
Prefabricated excellent, characterized in that configured by connecting the reinforcing bars 230, respectively, the reinforcing bars 200 formed on one side of the base portion of the outer pillar block 10, the intermediate pillar block 11, the corner pillar block 12 Reservoir. delete delete The method of claim 1,
The finishing block 14 is formed in the shape of a plate two protrusions 140 on the outer end surface, and the through hole 85 is projected to the high end steel wires on the inner one end surface of the protrusion 140. It is formed in the longitudinal direction of, the one end surface of the protruding portion 140 is formed an installation groove 150, which is a working space to connect the high-strength steel wire, the upper surface recessed portion 120 and the lower surface iron portion 130 Is formed, the prefabricated rainwater storage tank, characterized in that the outer column block 10, the corner column block 12, the upper connection block 13 and the bolt connection groove 110 that can be assembled. delete An anchor bolt embedded on the foundation concrete is inserted into each of the bolt insertion holes formed at the bottom of the outer pillar block, the intermediate pillar block, and the corner pillar block to be fixed.
T-shaped jig, tw-type jig, a-type jig connecting the connecting member of the upper connecting block inserted into the T-shaped recess, the twelve-shaped recess, the a-shaped recess formed on the upper surface of the outer pillar block, middle pillar block, corner pillar block Afterwards, the T-shaped recesses, 十 recesses, a-shaped recesses are filled with mortar,
Reinforce concrete is formed by connecting the reinforcement reinforcement formed on one end surface of the outer pillar block, the intermediate pillar block, and the corner pillar block with reinforcing bars,
A method of constructing a prefabricated rainwater storage tank, comprising assembling a finishing block to an insert nut formed in the outer pillar block and the intermediate pillar block, and tensioning and fixing the high-strength steel wire through the through-hole of the closing block.

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