KR100665267B1 - Manhole structure and manufacturing method of the same - Google Patents

Abstract

A manufacturing method of a manhole structure is provided to lower a water leakage rate, to reduce the maintenance cost and to prevent the pollution of soil and underground water where a manhole structure is installed by making waste water flow smoothly, preventing half spools from getting cogged by deposits and improving watertight efficiency on a joint of a manhole structure and to reduce traffic tie-ups by shortening a period of construction. A manufacturing method of a manhole structure comprises the steps of preparing a cylinder-shaped lower sphere inner mold, preparing a plate-shaped reinforcement sheet(200) made with HDPE(high density polyethylene) and winding round the outside of the inner mold to make projecting blades of the reinforcement sheet projected toward the outside of the inner mold, placing a drainageway on the prepared reinforcement sheet to make a semicircular passage of an inverter sheet projected upward, fixing plural half spools of the drainageway on the reinforcement sheet to adhere closely to openings formed on both ends of the semicircular passage of the inverter sheet and joining plural support projections on the outside of the inverter sheet and the half spools, arranging reinforcing bars on the circumference of the inner mold, preparing lower sphere outer molds and fixing to the arranged reinforcing bars to cover up laterally, installing an oscillator to the outer circumference of the outer mold and placing concrete in a space where the reinforcing bars are arranged between the outer mold and the inner mold, removing the oscillator from the outer mold after placing concrete completely, moving the inner and outer molds to a steam room to be exposed to steam at the appointed temperature, drawing out the inner and outer molds from the steam room after drying up the concrete filled between the inner and outer molds completely, injecting air to a gap between the inner mold and the concrete through a tube, stripping off the concrete from the inner mold after injecting air in the appointed quantity and disjoining the outer molds from the concrete to complete a lower sphere(500), and then coupling a vertical sphere(700) on the lower sphere and an upper slab on the vertical sphere.

Description

MANHOLE STRUCTURE AND MANUFACTURING METHOD OF THE SAME}

1 is a perspective view showing that the lower sphere inner mold is prepared.

Figure 2 is a perspective view showing that the reinforcing sheet and the drainage is formed in the lower sphere inner mold.

Figure 3 is a perspective view showing that the support means tube is supported on the lower sphere outer mold.

4 is a perspective view showing that the reinforcing sheet and the drainage passage are thermally fused to each other, and the support protrusions are further bonded to the outer surface of the drainage passage.

5 is a perspective view showing that the reinforcing bar is arranged in the periphery of the lower sphere inner mold.

Figure 6 is a perspective view showing that the lower sphere outer mold is installed on the reinforcing bar outer portion.

Figure 7 is a perspective view showing that the lower sphere outer mold is installed on the outer side of the reinforced bar.

Figure 8 is a perspective view showing that the vibrator is installed on the outer periphery of the lower sphere outer mold.

9 is a perspective view showing that the concrete is cast in the interior of the lower sphere outer mold.

10 is a perspective view showing that the lower sphere outer mold shown in Figure 9 is moved to the steam chamber.

11 is a perspective view showing the injection of air into the gap between the inner mold and the lower sphere.

12 is a perspective view showing that the lower sphere outer mold is deserted from the lower sphere inner mold.

13 is a perspective view showing that the lower sphere outer mold is deserted from the lower sphere inner mold.

14 is a perspective view showing a lower sphere in which the lower sphere outer mold is disassembled.

15 is an exploded perspective view showing a manhole structure of the present invention.

FIG. 16 is a cross-sectional view taken along the line II ′ shown in FIG. 15.

17 is an exploded perspective view showing the bonding relationship between the reinforcing sheet and the drain.

18A to 18J are plan views illustrating another embodiment of the semi-crude oil passage of the inverter sheet shown in FIG. 17.

** Explanation of Signs of Major Parts of Drawings **

100: lower sphere inner mold 200: reinforcing sheet

300: drainage path 310: inverter seat

320: local means 400: lower sphere outer mold

500: lower sphere 700: vertical sphere

800: upper slab 900: connection index ring

The present invention relates to a manhole structure and a method of manufacturing the same, and to a manhole structure and its manufacturing method to improve the durability and ease of construction.

Generally, sewage pipes are buried from each discharge source of sewage and wastewater to a sewage treatment plant in order to collect and reprocess wastewater, such as domestic sewage or factory sewage, into a sewage treatment plant.

A manhole structure is formed at intervals of a predetermined section on a path in which such a sewer pipe is installed. The manhole structure is installed to perform inspection and disinfection of sewage pipes from the outside. In addition, the manhole structure serves to allow rainwater to flow from the outside to move to another place.

Accordingly, the manhole structure and the sewer pipe should be bonded to each other. Conventionally, the joints are usually connected to each other by concrete mortar. In other words, the conventional cast-in-place manholes are fitted with pipes in the manhole walls, the gaps are filled with waterproof cement mortar, and reinforcement concrete is poured to connect them. Accordingly, the conventional method has a problem in that the construction time is long and the watertightness is inferior by joining the sewer pipe in the manhole wall portion.

In addition, as described above, the construction time increases, and as the cement mortar or concrete is hardened, cracks or gaps due to shrinkage are opened, which in turn lowers watertightness. Accordingly, there is a problem that the traffic jam is caused by frequent maintenance work after the completion of the construction.

In addition, in the case of joining by the above-mentioned concrete mortar, there is a problem that cracks and gaps due to shrinkage occurs while the concrete mortar is hardened.

As a result, the cracks and gaps allow soil or foreign matter to flow from the outside, and leakage of living sewage, rainwater, or factory sewage causes contamination of nearby ground.

In particular, even if no leakage occurs immediately after construction, cracks due to the difference in shrinkage and thermal strain of the sewer pipe of the concrete manhole structure and the synthetic resin material are generated after the construction of the manhole structure. That is, the shrinkage rate is a problem that cracks or gaps are generated in various parts of the joint due to the difference in shrinkage rate as the shrinkage and expansion are frequently repeated according to the change of seasons and the temperature of the wastewater.

In addition, the concrete manhole structure is constantly exposed to toxic wastewater and toxic strong acidic chemical gases generated from the wastewater, and these pollutants and chemical gases act as a cause of weathering and eroding the junction of the manhole and its inner wall. . Therefore, the sewage pipe connection part is mostly leaked after a certain time elapses, and thus there is a problem in that the durability of the manhole structure is also largely shortened and the life is shortened.

Accordingly, the present invention has been made to solve the above problems, the first object of the present invention is to provide a manhole structure and a method of manufacturing the same that can improve the water-tight performance in the pipe joint of the manhole structure.

It is a second object of the present invention to provide a manhole structure and a method of manufacturing the same, wherein the flow rate of wastewater is smooth and the flow path of the support pipe is not blocked due to the sediment, and the watertight performance is improved to lower the leakage rate.

The third object of the present invention is to prevent the pollution of the surrounding soil and groundwater in which the manhole structure is installed, the generation of construction waste due to the construction of the site, the manhole structure that can reduce the traffic jam generated during construction by shortening the construction time And to provide a method for producing the same.

A fourth object of the present invention is to provide a manhole structure and a method of manufacturing the same, which can prolong the life of the manhole structure by preventing the concrete structure from weathering or eroding due to the gas generated from waste water.

A fifth object of the present invention is to provide a manhole structure and a method for manufacturing the manhole structure that can shorten the construction period during the site construction.

In order to achieve the above object, the present invention provides a manhole structure.

The manhole structure has a lower spherical body having a first coupling part formed on an upper edge thereof, a plurality of supporting means installed on the side of the lower spherical body so as to communicate with the inside of the lower spherical body, and facing a plurality of directions, and sealing the bottom of the lower spherical body. However, the inverter sheet and the semi-circular flow path for communicating the plurality of index short pipes with each other includes a reinforcement sheet is installed to be in close contact with the inner wall of the lower sphere.

Here, the semi-crude flow passage preferably extends so that its opening is in communication with the plurality of branch means with respect to the central portion of the inverter sheet.

The reinforcing sheet has a sheet body and a protruding blade formed to protrude to the outer surface of the sheet body along the lateral longitudinal direction of the lower sphere, and preferably made of HDPE (high-density polyethylene).

In addition, the reinforcing sheet is formed with a circular groove for guiding the pipe of the branch means pipe is formed, the circular groove is bonded with the branch means pipe, each of the semi-circular flow path, the branch means pipe and the circular groove It is preferable to join by fusion.

In addition, the lower sphere further comprises a vertical sphere coupled to the upper portion, and the upper slab coupled to the vertical sphere, the vertical sphere is made of a cylindrical shape, the second coupling portion is formed on the upper edge and the lower edge A second 'coupling portion coupled to the first coupling portion is formed in the upper slab, and an opening having a predetermined size is formed in an upper portion thereof, and a lower portion is formed of an open body, and coupled to the second coupling portion in a lower edge. Preferably, the third coupling portion is formed.

Here, it is preferable that the connection index ring is further interposed between the first coupling portion and the second 'coupling portion, and the second coupling portion and the third coupling portion.

On the other hand, each of the upper slab and the vertical sphere has a first fastening portion is formed on the outer periphery, and the upper end of each of the vertical sphere and the lower sphere is formed with a second fastening portion is fastened to the first fastening portion, The first fastening part includes a groove formed in the outer circumference, a first fastening groove penetrating the lower ends of the spheres from the bottom surface of the groove, and a fastening bolt inserted into the first fastening groove, and the second fastening part is It is preferable that it is a second fastening groove which is formed on top of each of the vertical sphere and the lower sphere to which the fastening bolt is fitted and fastened.

In order to achieve the above object, the present invention provides a method of manufacturing a manhole structure.

The manufacturing method of the manhole structure includes the steps of preparing a lower sphere inner mold, the step of outer shell of the reinforcing sheet on the outer surface of the lower sphere inner mold, the step of forming a drainage on top of the reinforcing sheet, the outer surface of the drainage Forming a plurality of supporting protrusions on the reinforcing bar, forming reinforcing bars at the periphery of the reinforcing sheet to expose both ends of the drainage channel, and forming a lower spherical outer mold to surround the outer part of the reinforcing bar; Placing a lower concrete concrete inside the lower sphere outer mold, stripping the lower sphere outer mold and the lower sphere concrete from the lower sphere inner mold, and dismantling the lower sphere outer mold to form a lower sphere. It includes a step.

Here, the reinforcing sheet is provided with a sheet body, and a protruding blade formed to protrude on the outer surface of the sheet body in the lateral longitudinal direction of the inner mold, it is preferably made of HDPE (high-density polyethylene).

The drainage passage may be formed by attaching an inverter sheet having a semi-circular flow path formed on the upper portion of the reinforcing sheet, and joining a plurality of support means tubes to the side of the reinforcement sheet so as to communicate with the semi-circular flow path.

In addition, the lower spherical outer mold surrounds the outer portion of the reinforcing bar in a plurality, it is preferable that the support formed on the lower spherical outer mold supports the plurality of support means pipe.

Here, it is preferable that the reinforcing sheet and the drainage line are joined to each other by thermal fusion.

On the other hand, it is preferable to further comprise the step of forming a first coupling portion on the upper edge of the formed lower sphere.

Here, further comprising the step of coupling the vertical sphere coupled to the upper portion of the lower sphere, the upper slab coupled to the upper portion of the vertical sphere, the vertical sphere is made of a cylindrical shape, the second coupling portion on the upper edge A second 'coupling portion is formed and is coupled to the first coupling portion at a lower edge thereof, and the upper slab is formed of a body having an opening having a predetermined size at an upper portion thereof, and a lower portion thereof being opened, and the second coupling portion having a lower edge thereof. A third coupling portion is formed to be coupled to the portion, and it is preferable that a connection index ring is further interposed between the first coupling portion and the second 'coupling portion, and the second coupling portion and the third coupling portion.

In addition, each of the upper slab and the vertical sphere is formed with a first fastening portion on the outer periphery, and forming a second fastening portion to be joined to the first fastening portion on the upper end of each of the vertical sphere and the lower sphere. The first fastening part includes a groove formed in the outer circumference, a first fastening groove penetrating the lower ends of the spheres from the bottom surface of the groove, and a fastening bolt inserted into the first fastening groove. Preferably, the second fastening part is a second fastening groove which is formed at an upper end of each of the vertical sphere and the lower sphere to which the fastening bolt is fitted and fastened.

On the other hand, it is preferable to apply the vibration from the outside to the outer mold during the casting of the lower concrete concrete inside the lower sphere outer mold.

In addition, after pouring all of the lower concrete, the lower concrete is preferably exposed to steam at a predetermined temperature.

In addition, the lower sphere outer mold and the lower sphere concrete is preferably deserted with each other after the air is injected between the lower sphere inner mold.

Hereinafter, with reference to the accompanying drawings, it will be described in detail the manhole structure and its manufacturing method of the present invention.

First, a method for manufacturing a manhole structure of the present invention will be described with reference to FIGS. 1 to 17.

1 is a perspective view showing that the lower sphere inner mold is prepared, Figure 2 is a perspective view showing that the reinforcing sheet and the drainage is formed in the lower sphere inner mold.

As shown in Figure 1, a cylindrical lower sphere inner mold 100 is prepared. A lower portion of the lower sphere inner mold 100 (hereinafter referred to as an inner mold) is formed in a disc shape larger than the diameter of the inner mold 100.

As shown in Figure 2, a plate-shaped reinforcement sheet 200 is prepared. The reinforcing sheet 200 is made of a material of HPDE. The reinforcing sheet 200 is provided with a sheet body 210, a plurality of protruding blades 220 formed along the longitudinal direction of the side of the inner mold 100 is formed on the outer surface of the sheet body 210 do. Each of the protruding blades 220 is formed as a protrusion line protruding in two stages.

The reinforcing sheet 200 prepared as described above is wound on the outer surface of the inner mold 100. Therefore, the protruding blade 220 of the reinforcing sheet 200 is disposed to protrude toward the outer side of the inner mold 100. One end surface and the other end surface of the reinforcing sheet 200 are bonded to each other by thermal fusion.

The drainage path 300 is disposed above the reinforcing sheet 200. The drainage path 300 includes an inverter sheet 310 having a semi-circle flow path 311 and a plurality of branch means tubes 320. First, the inverter sheet 310 is mounted on the upper portion of the reinforcing sheet 200. The top surface of the reinforcing sheet 200 and the edge portion of the inverter sheet 310 are bonded to each other by thermal fusion. At this time. The semi-circular flow path 311 of the inverter sheet 310 is disposed to protrude upward.

Figure 3 is a perspective view showing that the support means tube is supported on the lower sphere outer mold.

3, a lower spherical outer mold 400 (hereinafter referred to as an outer mold) consisting of a plurality is prepared. The outer mold 400 has a support 410 corresponding to the number of the support means 320 is formed. Each of the branch pipes 320 is inserted into and supported by a support 410 formed in the outer mold 400 that is separately prepared.

4 is a perspective view showing that the reinforcing sheet and the drainage line are thermally bonded to each other, and the support protrusions are further bonded to the outer surface of the drainage path.

As shown in FIG. 4, the branch pipes 320 are mounted to the reinforcing sheet 200 to be in close contact with openings formed at both ends of the semi-circular flow path 311 of the inverter sheet 310. At this time, one end surface of the support pipes 320 is joined to each other by heat fusion of the end surface of the reinforcing sheet 200 and the opening of the semi-circular flow path 310.

The support protrusions 350 are further bonded to a plurality of positions of the outer surface of the inverter sheet 310 and the support pipes 320. The support protrusions 350 may be joined to each other by heat fusion with the outer surface. The support protrusions 350 may be formed by cutting the protruding blade 220 of the reinforcing sheet 200 to a predetermined size. Thus, the support protrusions 350 may be made of HDPE.

5 is a perspective view showing the reinforcement is reinforced in the peripheral portion around the lower sphere, Figure 6 is a perspective view showing that the lower sphere outer mold is installed on the outer side of the reinforced reinforcement, Figure 7 is a lower sphere outer mold on the outer side of the reinforced reinforcement Is a perspective view showing that it is installed.

After the support protrusion 350 is formed in the drainage path 300 as described above, as shown in FIG. 5, the reinforcement 450 is disposed at the periphery of the inner mold 100. The shape of the reinforcing bar 450 is arranged to cover the side and the upper portion of the inner mold (100). The reinforcing shape of the reinforcing bar is to correspond to the outer shape of the inner mold (100). At this time, the support of the reinforcing bar 450 is supported and fixed on the lower portion of the disk-shaped of the inner mold (100).

In addition, protruding rods 150 having a predetermined length are formed at a plurality of positions along the edge of the bottom of the inner mold 100 so as to face upward. The protruding rods 150 are for forming the first fastening groove 21 (see FIG. 16) to be described below.

Subsequently, as illustrated in FIGS. 6 and 7, the plurality of outer molds 400 prepared above are mounted to cover the side of the reinforced reinforcement 450. Bottom surfaces of the outer molds 400 are supported by being mounted on a lower portion of the inner mold 100. At this time, the support means 320 is inserted into and supported by the support 410 of the outer mold 400, one end thereof is in communication with the semi-circular flow path 311 of the inverter sheet 310.

Figure 8 is a perspective view showing that the vibrator is installed on the outer periphery of the lower sphere outer mold.

After the outer molds 400 are mounted on the side of the reinforcement 450 as described above, the vibrator 470 is installed at a predetermined position of the outer circumference of the outer mold 400. The vibrator 470 is preferably a device for causing the vibration to the top, bottom, left and right by receiving power to the outside. In addition, the vibration range (Hz) generated from the vibrator 470 may be variable within a predetermined range.

9 is a perspective view showing that the concrete is placed in the interior of the lower sphere outer mold, Figure 10 is a perspective view showing that the lower sphere outer mold shown in Figure 9 is moved to the steam chamber.

As described above, after the vibrator 470 is mounted on the outer mold 400, as shown in FIG. 9, the rebar 450 formed between the outer mold 400 and the inner mold 100. This reinforced space is filled with concrete. The concrete is the lower sphere 500 after it is dried.

At this time, the vibration generated from the vibrator 470 is transmitted to the inside through the outer periphery of the outer mold (400). Therefore, the concrete to be poured may be evenly poured into the space where the reinforcement 450 is placed. Accordingly, it is possible to prevent the generation of pores in the space to be poured, it can be induced to improve the concrete placing density.

Subsequently, when the concrete pouring work is completed, the vibrator 470 is removed from the outer mold 400.

As shown in FIG. 10, the inner / outer molds 100 and 400 in which the concrete is poured are moved to the steam chamber 600. The inner / outer molds 100 and 400 are exposed to steam at a predetermined temperature in the steam chamber 600. Therefore, the concrete filled between the inner / outer mold (100, 400) can be easily dried.

Subsequently, after a predetermined time, the inner / outer molds 100 and 400 are withdrawn from the steam chamber 600.

11 is a perspective view showing the injection of air into the gap between the lower sphere inner mold and concrete, Figure 12 is a perspective view showing that the lower sphere outer mold is deserted from the lower sphere inner mold, Figure 13 is a lower sphere outer mold A perspective view showing desertion from a sphere inner mold.

As described above, in the inner / outer molds 100 and 400 drawn out from the steam chamber 600, air is injected into the lateral space between the inner mold 100 and the poured concrete, as shown in FIG. . Although not shown in the drawings, any device for injecting air may be any device that can be injected into the side space by connecting the tube 180 to a device such as a compressor. Therefore, the air injected as described above forms a small gap between the concrete surface in contact with the side of the inner mold 100, thereby guiding the concrete to be easily deserted.

After the injection of a predetermined amount of air as described above, as shown in Figure 12, the concrete is deserted from the inner mold (100). At this time, the outer mold 400 mounted on the outer circumference of the concrete is mounted. In addition, a separate lifting device is provided to pick up the outer mold 400 and lift it upward. Although not shown in the drawings, the elevating device is preferably provided with a handler that can pick up the outer periphery of the outer mold, and a driver connected to the handler to elevate the handler directly below.

Accordingly, the outer mold 400 may be completely deserted from the inner mold 100 as shown in FIG. 13 while concrete is mounted. The deserted outer mold 400 is placed in a separate space.

FIG. 14 is a perspective view illustrating a lower sphere in which the lower sphere outer mold is disassembled by being rotated 180 degrees along an arrow shown in FIG. 13.

The outer mold 400 placed in a separate space as described above is dismantled from the outer surface of the concrete, as shown in FIG. Since the outer mold 400 is coupled to a plurality, it is sequentially dismantled from the concrete. In addition, when dismantling the outer mold 400 having the support 410 into which the supporting means 320 are inserted, the outer surface of the supporting means 320 should be dismantled carefully so as not to be damaged.

Therefore, when the outer molds 400 are dismantled from the concrete as described above, the lower sphere 500 having the support means tubes 320 disposed on both sides is completed. The lower structure 500 is reinforced concrete in the reinforcement 450, because the inner wall is supported by the protruding blade 220 of the reinforcing sheet 200 is inserted, the durability of the lower sphere 500 is improved Can be.

The above described the manufacturing process of the lower sphere according to the present invention with reference to the accompanying drawings 1 to 14.

The lower sphere 500 manufactured as described above may further include a vertical sphere 700 and an upper slab 800.

FIG. 15 is an exploded perspective view showing a manhole structure of the present invention, and FIG. 16 is a cross-sectional view taken along the line II ′ of FIG. 15.

Referring to FIG. 15, a step of forming a first coupling part 510 on the upper edge of the lower sphere 500 may be further included.

In addition, the step of coupling the vertical sphere 700 coupled to the upper portion of the lower sphere 500, the upper slab 800 coupled to the upper portion of the vertical sphere (700).

In more detail, as shown in FIG. 16, the vertical sphere 700 has a cylindrical shape, a second coupling part 710 is formed on an upper edge, and the first coupling part 510 on a lower edge. A second 'coupling portion 720 is coupled to the upper slab, and the upper slab 800 is formed of a body having an opening 810 having a predetermined size at an upper portion thereof and an open lower portion thereof. A third coupling part 830 coupled to the coupling part 710 is formed, and the first coupling part 810 and the second 'coupling part 720, the second coupling part 710 and the third coupling part 710 are formed. The coupling index ring 900 is further interposed between the coupling portion 830.

In addition, each of the upper slab 800 and the vertical sphere 700, the first fastening portion is formed on the outer circumference, the first fastening portion at the upper end of each of the vertical sphere 700 and the lower sphere 500 And forming a second fastening part to be fastened with the second fastening part.

In more detail, the first fastening part includes a groove 20 formed in the outer circumference, and a first fastening groove 21 penetrating a lower end of the spheres 500 and 700 from a bottom surface of the groove 20. A fastening bolt 30 is inserted into the first fastening groove 21. The fastening bolt 30 may be a polygon groove screw having a polygon groove formed at a head thereof. In addition, the second fastening part may be a second fastening groove 22 formed at the upper end of each of the vertical sphere 700 and the lower sphere 500 to which the fastening bolt 30 is fitted and fastened.

Next, the manhole structure of the present invention manufactured by the manufacturing method as described above will be described in detail.

17 is an exploded perspective view illustrating a bonding relationship between a reinforcing sheet and a drainage channel, and FIGS. 18A to 18J are plan views illustrating another embodiment of a semi-circular flow path of the inverter sheet shown in FIG. 17.

15 to 18, the manhole structure of the present invention is provided with a cylindrical lower sphere 500. The lower sphere 500 is made of concrete and reinforcement 450 is placed inside the reinforcement. The lower sphere 500 has a first coupling portion 510 is formed at the upper end thereof. The lower sphere 500 is equipped with an inverter sheet 310 covering the bottom thereof. The inverter sheet 310 has a semi-circular flow path 311 is formed.

In addition, the flow path of the semi-crude flow path may follow a plurality of directions as shown in FIG. 18A. In more detail, as shown in FIGS. 18B to 18C, the flow path direction of the semi-circle flow path may be manufactured such that various flow paths of the semi-circle flow path 311 are formed.

A plurality of branch means tubes 320 in communication with the opening of the semi-circular flow path 311 of the inverter sheet 310 is provided. Each of the branch pipes 320 is disposed on the side of the lower sphere 500 so as to communicate with the inside of the lower sphere 500.

The reinforcing sheet 200 is bonded to the inner surface of the lower sphere 500. The reinforcing sheet 200 is formed of a material of HDPE. The lower edge of the reinforcing sheet 200 is bonded to the edge of the inverter sheet 310, the reinforcing sheet 200 is bonded to one end of the supporting means 320. The joined method is joined to each other by heat fusion.

That is, the reinforcing sheet 200 is formed with a circular groove 201 for guiding the passage of the branch pipes 320 is formed, the circular groove 201 is bonded to the branch pipes 320 The semicircular flow path 311, the branch pipes 320, and the circular grooves 201 are joined to each other by thermal fusion.

On the other hand, the reinforcing sheet 200 is provided with a seat body 210, and a protruding blade 220 formed on the outer surface of the seat body 210 protruding along the side circumference of the lower sphere (500). The protruding blade 220 is embedded and fixed inside the lower sphere 500.

On the other hand, the lower sphere 500 is further provided with a vertical sphere 700 coupled to the upper portion, and the upper slab 800 coupled to the vertical sphere 700.

The vertical sphere 700 is formed in a cylindrical shape, the second coupling portion 710 is formed on the upper edge and the second 'coupling portion 720 coupled to the first coupling portion 710 on the lower edge is formed. do.

The upper slab 800 is formed of a body having an opening 810 of a predetermined size in the upper portion and an open lower portion thereof, and a third coupling portion 830 coupled to the second coupling portion 710 at a lower edge thereof. Is formed.

Here, the connection index ring 900 is further interposed between the first coupling portion 510 and the second 'coupling portion 720, the second coupling portion 710 and the third coupling portion 830. do. Therefore, when a liquid such as rainwater or sewage flows into the connection index ring 900, the connection index ring 900 is expanded, thereby easily sealing the coupling portions.

On the other hand, each of the upper slab 800 and the vertical sphere 700 is formed with a first fastening portion on the outer circumference. In addition, second upper ends of the vertical spheres 700 and the lower spheres 500 are respectively fastened with the first fastening portion.

In more detail, the first fastening part includes a groove 20 formed in the outer circumference, a first fastening groove 21 penetrating the lower ends of the spheres from the bottom surface of the groove 20, and the first fastening part. The fastening bolt 30 is inserted into the fastening groove 21. The fastening bolt 30 may be a polygonal groove screw having a polygonal groove 31 formed at a head thereof.

In addition, the second fastening portion is a second fastening groove 22 formed at the upper end of each of the vertical sphere 700 and the lower sphere 500 to which the fastening bolt 300 is fitted and fastened.

Accordingly, by engaging the first fastening portion and the second fastening portion through the above configuration, the bonding force between the spheres can be further increased.

As described above, the present invention is provided with a reinforcing sheet made of a material of HDPE on the inner wall of the manhole structure, the heat-sealed joint of the reinforcing sheet and the guide pipes and the guide pipes are integrated into the lower sphere, and each sphere By interposing the connection index ring at the joint between the joints, there is an effect of improving the watertight performance at the joint.

In addition, the inner surface of the lower sphere is smoothed by the reinforcing sheet and there is no protrusion, so the flow rate of the waste water is smooth and the flow path of the support means is not blocked due to the sediment. It can reduce the administrative costs.

In addition, by improving the watertight performance as described above, pollution of the surrounding soil and groundwater where the manhole structure is installed can be prevented, construction waste generated by construction work can be reduced, and construction traffic can be reduced by shortening construction time. There is also an effect.

In addition, by mounting the reinforcement sheet as described above on the inner wall of the lower sphere, the weathering or erosion of the concrete structure due to the gas generated from the waste water is prevented in advance, and the watertightness between the spheres is improved to improve the life of the manhole structure It has a prolonged effect.

In addition, since the means tube formed in the lower sphere is already bonded to the inverter sheet and the reinforcement sheet to be integrally manufactured, it is possible to reduce the process of installing the means tube separately at the time of site construction, thereby reducing the construction period. There is.

Claims (18)

A lower sphere having a first coupling part formed on an upper edge thereof; A plurality of branch means tubes installed on the side of the lower sphere to face a plurality of directions so as to communicate with the inside of the lower sphere; An inverter sheet sealing a bottom of the lower sphere and having a semi-circle flow path communicating the plurality of branch means tubes with each other; And Manhole structure comprising a reinforcing sheet is installed to be in close contact with the inner wall of the lower sphere. The method of claim 1, And the semi-crude flow passage extends so that the openings communicate with the plurality of branch means tubes, respectively, with respect to the central portion of the inverter sheet. The method of claim 1, The reinforcing sheet has a seat body, and a protruding blade formed to protrude on the outer surface of the seat body along the lateral longitudinal direction of the lower sphere, the manhole structure characterized in that made of high-density polyethylene (HDPE). The method of claim 1, The reinforcing sheet is formed with a circular groove for guiding the pipe of the branch means is formed, the circular groove is bonded with the branch means pipe, And the semicircular flow path, the support pipe and the circular groove are joined to each other by heat fusion. The method of claim 1, The lower sphere further comprises a vertical sphere coupled to the upper portion, and the upper slab coupled to the vertical sphere, The vertical sphere is formed in a cylindrical shape, the second coupling portion is formed on the upper edge and the second 'coupled portion is formed on the lower edge coupled to the first coupling portion, The upper slab is a manhole structure, characterized in that the opening is formed in a predetermined size in the upper portion and the lower body is open, the third coupling portion is coupled to the second coupling portion on the lower edge. The method of claim 5, The manhole structure, characterized in that the connection index ring is further interposed between the first coupling portion and the second 'coupling portion, the second coupling portion and the third coupling portion. The method of claim 5, Each of the upper slab and the vertical sphere has a first fastening portion formed at an outer circumference thereof, and a second fastening portion formed at the upper end of each of the vertical sphere and the lower sphere is fastened with the first fastening portion, The first fastening portion includes a groove formed in the outer circumference, a first fastening groove penetrating the lower ends of the spheres from the bottom surface of the groove, and a fastening bolt inserted into the first fastening groove, The second fastening part is a manhole structure, characterized in that the second fastening groove is formed on the top of each of the vertical sphere and the lower sphere is fastened to the fastening bolt is fitted. Preparing a lower sphere inner mold; Enclosing a reinforcing sheet on an outer surface of the lower sphere inner mold; Forming a drainage path on the reinforcing sheet; Forming a plurality of support protrusions on an outer surface of the drainage path; Forming a reinforcing bar at a periphery of the reinforcing sheet so that both ends of the drainage channel are exposed; Forming a lower spherical outer mold to surround the outer side of the reinforced bar; Placing a lower concrete concrete in the lower concrete outer mold; Deserting the lower sphere outer mold and the lower sphere concrete from the lower sphere inner mold; And Dismantling the lower sphere outer mold to form a lower sphere. The method of claim 8, The reinforcing sheet has a sheet body, and a protruding blade formed to protrude on the outer surface of the sheet body along the lateral longitudinal direction of the inner mold, the manufacturing of a manhole structure characterized in that the HDPE (high-density polyethylene) Way. The method of claim 8, Forming the drainage path is a manufacturing method of the manhole structure characterized in that the upper portion of the reinforcing sheet is attached to the inverter sheet is formed with a semi-circle flow path, and a plurality of support means pipes are joined to the side of the reinforcement sheet to communicate with the semi-circle flow path. . The method of claim 8, The lower sphere outer mold is wrapped in a plurality of the outer portion of the reinforcement reinforcement, the support is formed in the lower sphere outer mold is a manufacturing method of the manhole structure, characterized in that for supporting the plurality of support means pipe. The method of claim 8, The reinforcing sheet and the drainage channel manufacturing method of the manhole structure characterized in that the bonding by heat fusion. The method of claim 8, The manufacturing method of the manhole structure further comprising the step of forming a first coupling portion on the upper edge of the formed lower sphere. The method of claim 13, Further comprising a step of coupling the vertical sphere coupled to the upper portion of the lower sphere, the upper slab coupled to the upper portion of the vertical sphere, The vertical sphere is formed in a cylindrical shape, the second coupling portion is formed on the upper edge and the second 'coupled portion is formed on the lower edge coupled to the first coupling portion, The upper slab is formed of a body having an opening having a predetermined size in the upper portion and the lower portion of the upper slab, and has a third coupling portion coupled to the second coupling portion at a lower edge thereof. Method of manufacturing a manhole structure characterized in that the connection index ring is further interposed between the first coupling portion and the second 'coupling portion, the second coupling portion and the third coupling portion. The method of claim 14, Each of the upper slab and the vertical sphere is a first fastening portion is formed on the outer periphery, and the upper surface of each of the vertical sphere and the lower sphere further comprises the step of forming a second fastening portion is fastened with the first fastening portion , The first fastening portion includes a groove formed in the outer circumference, a first fastening groove penetrating the lower ends of the spheres from the bottom surface of the groove, and a fastening bolt inserted into the first fastening groove, The second fastening part is a manufacturing method of the manhole structure, characterized in that the second fastening groove is formed on the upper end of each of the vertical sphere and the lower sphere is fastened by the fastening bolt is fitted. The method of claim 8, The method of manufacturing a manhole structure characterized in that the vibration from the outside to the outer mold during the casting of the lower concrete concrete in the lower sphere outer mold. The method of claim 8, After pouring all of the lower concrete, the manufacturing method of the manhole structure characterized in that the lower concrete is exposed to steam of a predetermined temperature. The method of claim 8, And the lower sphere outer mold and the lower sphere concrete are deserted with each other after air is injected between the lower sphere inner molds.

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