KR101624518B1 - Live wire precast manhole and its construction method - Google Patents

Abstract

An objective of the present invention is to provide a live wire precast manhole and an installation method thereof which facilitate installation in a live wire state without relocating or damaging an obstruction complexly buried underground. According to the present invention, the live wire precast manhole comprises: an upper plate unit having at least one hole in which a manhole cover is mounted; a plurality of pillars which are integrated into the upper plate unit by precast concrete, and support the upper plate unit; a through hole formed between two neighboring pillars, through which an obstruction passes; and an exposed rebar exposed to the upper plate unit on a side of the through hole and one surface of the pillars to be buried in concrete when forming a side wall.

Description

Live wire precast manhole and its construction method "

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a live precast manhole and a method of constructing the same, and more particularly, to a live precast manhole and a method of constructing the same.

Generally, a manhole should be installed in a certain area when it is buried underground, sewage pipe, city gas pipe, fire hydrant, district heating pipe, oil pipeline, power line, Among them, manholes for electric power lines are installed at the points where the roads diverge, where the ducts diverge, when the ducts must be bent beyond the allowable curvature, before and after the steep slopes, before and after the long bridges,

When a manhole for a power line is installed underground, a concrete installation method is used to install a manhole mainly in the field. However, the above-mentioned field-borne construction method has a disadvantage in that all the work must be performed in the field, so it is difficult to carry out all the equipment to the site, and the construction period is long and traffic congestion occurs on the site.

On the other hand, the prefabrication method is a method of prefabricating the wall, the upper slab, the bottom floor, etc., and assembling them in the field. It is possible to shorten the construction period compared to the field installation method. However, It is difficult to carry out waterproofing treatment.

Korean Patent No. 0693307 (published on March 14, 2007)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a live precast manhole and a method of constructing the live precast manhole that are easy to install in a live state without damaging or damaging the obstacle, .

Also, it is intended to provide a live precast manhole and a method of constructing the same that can shorten the processing time by applying a precast method.

The present invention also provides a live precast manhole and a method of constructing the same that minimize the excavation area and excavation amount of a construction site to minimize obstacles in traffic flow and reduce construction cost.

In order to accomplish the above object, a live precast manhole according to an aspect of the present invention is characterized in that the live precast manhole is in a live state without damaging the obstacle such as a communication line, The present invention relates to a precast manhole capable of maintaining and repairing a manhole cover, comprising: an upper plate portion having at least one hole that engages with a manhole cover; and a plurality of pillar portions integrally formed with the upper plate portion and the precast concrete, And an exposed reinforcing bar formed between the adjacent two pillars and through which the barrier material passes, and an exposed reinforcing bar exposed in the through hole-side upper plate portion and one side of the column and embedded in the concrete when the side wall is formed.

And a steel plate for compaction operation may be provided on the lower side of the outside of the plurality of columns in a place where the installation site is installed.

And a soil plate for pouring concrete may be installed inside the installation place inside the plurality of columns.

And a precast sidewall formed integrally with the precast concrete between the adjacent two columns.

The upper plate portion may be formed with a ring for lifting and seating the precast manhole.

In order to accomplish the above object, according to one aspect of the present invention, there is provided a method of constructing a live precast manhole, comprising: disposing a manhole, In the construction method using live cast precast manhole to perform maintenance work while maintaining the live condition, it is necessary to remove the road cut and the pavement layer according to the size of the construction site requiring repair, and to remove the existing manhole including the manhole cover and manhole step; Confirming the location of the obstacles buried in the basement, arranging the floor and laying the floor concrete; A plurality of pillars formed integrally with the upper plate portion and the precast concrete and supporting the upper plate portion, and a plurality of pillars formed between the adjacent two pillars, Placing a precast manhole having a through hole passing through the through hole and the exposed reinforcing bars exposed in the upper plate portion and the one side of the column to form a sidewall when the sidewall is formed; Installing a steel plate on the outside of the plurality of columns; A sand compaction operation is performed in a space between an inside lower part of the installed installation place and the steel plate; Installing a U-shaped beam and a current plate on the inside of the plurality of columns; Placing concrete within the installed installation site; A step of curing and backing the curing and refilling operation by supplying steam to maintain a temperature of 65 to 75 ° C or using a heating device using a microwave; A step of constructing a manhole cover, and a step of constructing and packing a manhole structure for packing a road that has been erected; And removing and watering the soil plate installed on the inner side of the plurality of columns; .

The step of installing the earth plate on the inner side of the plurality of columns may include the steps of arranging the side wall reinforcement bars between the adjacent two columns and connecting the reinforced side wall reinforcement bars to the exposed reinforcing bars.

The step of dismantling, waterproofing, and disposing the dust plate installed on the inner side of the plurality of columns may include the step of providing a channel through which the obstacle is passed.

And a step of lifting and securing the precast manhole to the upper plate part before the step of seating the precast manhole.

According to one aspect of the present invention, the live precast manhole and the method of constructing the same can prevent the residents living in the vicinity of the construction site from experiencing discomfort or discomfort due to the construction, can do.

In addition, since the construction is easy and the work can be continuously performed, the processing time can be shortened.

In addition, since the excavation area and excavation amount can be minimized, it is possible to minimize the obstacle of traffic and reduce the cost.

1 is a perspective view of a live precast manhole according to an embodiment of the present invention;
2 is a cross-sectional view of a state in which the live-line precast manhole shown in Fig. 1 is installed.
3 is another cross-sectional view of a state in which the live-line precast manhole shown in Fig. 1 is installed.
4 is another cross-sectional view of a state in which the live-line precast manhole shown in Fig. 1 is installed.
5 is a perspective view showing a modified example of the live-line precast manhole shown in Fig.
FIG. 6 is a perspective view showing still another modification of the live line precast manhole shown in FIG. 1; FIG.
7 is a flowchart showing a method of constructing a live precast manhole according to an embodiment of the present invention.
8 is a flowchart showing a detailed process of a method of constructing the live line precast manhole shown in FIG.

Hereinafter, a live precast manhole according to a preferred embodiment of the present invention and a construction method thereof will be described in detail.

FIG. 1 is a perspective view of a live-line precast manhole according to an embodiment of the present invention, FIG. 2 is a sectional view of the live-line precast manhole shown in FIG. 1, Fig. 4 is another cross-sectional view of a state in which the live-line precast manhole shown in Fig. 1 is installed. Fig.

1 to 4, a live precast manhole 10 according to an embodiment of the present invention includes an upper plate 100, a column 200, a through hole 300, and an exposed reinforcing bar 400 can do.

The live precast manhole 10 can be maintained in a live state without repairing obstacles such as communication lines, electric wires, and various pipelines installed at the installation place of the manhole requiring maintenance, and maintenance work can be performed. For this purpose, it is possible to open the installation place of the manhole in which maintenance is required first, so that the live precast manhole 10 can be buried in the ground.

Here, the upper plate 100 of the hot-line precast manhole 10, which is embedded in the installed place 30, may be provided at a position adjacent to the ground. At least one hole 110 is formed in the upper plate 100 so that the manhole cover can be engaged with the upper plate 100 after the hot-line precast manhole 10 is completely filled.

The column 200 is integrally formed with the top plate 100 and the precast concrete, and the live precast manhole 10 may have a pilot structure.

Piloti is an independent column supporting the upper floors of the building. The first floor of the building is made up of only one column and is continuous with the surrounding ground, so that the effect of not obstructing the traffic on the ground without occupying the ground with the building can be demonstrated.

As described above, since the live-line precast manhole 10 is provided in a pilotty structure, the obstacle buried in the ground can freely pass and change direction through the through hole 300 formed between the two adjacent pillars 200 .

By installing the live precast manhole 10 after repairing in a live state without damaging the obstacle, the construction can be facilitated and the processing time can be shortened accordingly.

In addition, even if only the live precast manhole 10 is excavated, it is possible to perform the repair work of the obstacle and the seating and burying of the live precast manhole 10, so that not only the excavation area but also the excavation amount can be minimized, And the effect of reducing the construction cost can be exhibited.

The exposed reinforcing bar 400 is a reinforcing bar exposed from the upper plate 100 and the column 200 toward the through hole 300. The reinforcing bar 400 is finished with the repair work and seats the live precast manhole 10, The side wall 700 can be embedded in the concrete when it is formed.

When forming the sidewall 700, a sidewall reinforcing bar 710 for increasing the rigidity of the sidewall 700 may be disposed before the concrete is laid. At this time, the sidewall reinforcing bars 710 are connected to the exposed reinforcing bars 400 exposed on the top plate 100 and the pillars 200, so that the side reinforcing bars 710 can be easily placed.

In the present embodiment, the exposed reinforcing bars 400 provided in the column 200 form two rows so as to be spaced apart along the longitudinal direction of the columns 200, and the exposed reinforcing bars 400 provided on the upper plate 100 The exposed reinforcing bars 400 provided on the pillars 200 and the upper plate 100 are formed in the same manner as the live precast manholes 10, May be provided in various shapes and numbers depending on the field in which they are embedded.

The floor pre-cast manhole 10 can be easily placed horizontally with the ground by placing the floor concrete 20 on the floor surface before the live pre-cast manhole 10 is seated in the installed place 30 .

After the floor concrete 20 is laid, the hot-line precast manhole 10 is placed in the installed place 30 and the place 30 is installed in the form of wrapping the lower outside of the plurality of pillars 200 The steel plate 500 can be installed.

The steel plate 500 may be provided on the lower outer side of the plurality of columns 200 to enable the compaction operation to be performed on the inner lower side of the installed installation site 30. At this time, the height of the steel plate 500 reaches the lower end of the through-hole 50, so that the height of the steel plate 500 does not affect the obstacles such as communication lines, electric wires and various pipes provided in the through- . As the steel plate 500 is installed, a space is formed between the steel plate 500 and the attachment surface 31 of the installed installation site 30, and the space may be filled with the sand 40. After the sand 40 is filled, the inner side of the installed place 30 can be made hard by sanding the sand 40.

Accordingly, it is possible to prevent collapse of the surrounding ground in which the live-line precast manhole 10 is buried by impact or vibration applied to the upper part of the live-line precast manhole 10 together with the steel plate 500.

Meanwhile, after the steel plate 500 is installed and the sand 40 is compacted through the water compacting method, the operation of placing the concrete into the installed installation site 30 to place the live precast manhole 10 Lt; / RTI >

At this time, a soil plate 600 may be provided inside the plurality of columns 200.

The soil plate 600 acts as a mold to prevent the concrete from penetrating into the inner space of the plurality of columns 200 through the through hole 300 when the concrete is installed in the installed place 30, At the same time, the side wall 700 can be formed in the through hole 300.

Therefore, even if the hot-line precast manhole 10 is completely buried in the ground, the inner space of the plurality of pillars 200 is held by the dust plate 600. Therefore, the user can observe or hold the suspended object through the hole 110 formed in the upper plate 100, Maintenance can be easily performed.

Next, a modified example of the live precast manhole 10 according to an embodiment of the present invention will be described. In the following description, only different parts from the above-described embodiment will be described in detail and the same or similar parts will not be described in detail.

Fig. 5 is a perspective view showing a modified example of the live-line precast manhole shown in Fig. 1, and Fig. 6 is a perspective view showing still another modified example of the live-line precast manhole shown in Fig.

1 to 6, a hot-line precast manhole 10 according to an embodiment of the present invention includes a top plate 100 having at least one hole 110 to be coupled with a manhole cover, a top plate 100 A plurality of columns 200 formed integrally with the precast concrete and supporting the upper plate 100, a through hole 300 through which the obstacle is formed, and a through hole 300 formed between the adjacent two columns 200, And an exposed reinforcing bar 400 exposed to one side of the upper plate 100 and the pillars 200 on the side of the hole 300 and embedded in the concrete when the side walls 700 are formed.

5, the live precast manhole 10 may include a precast sidewall 800 integrally formed by precast concrete between two adjacent pillars 200.

That is, the direction of the obstacle passing through the through hole 300 is limited in advance through the precast sidewall 800, and the hot-line precast manhole 10 is seated in the field, It is possible to relatively reduce the amount of work for installing the battery 600.

In addition, when another pipe such as a water supply and drainage pipe is adjacent to the installed place 30 where the live hot-cast manhole 10 is buried, it is a function to divide the work space so as not to damage other pipes can do.

As a result, it is possible to achieve a safe construction and shorten the overall construction time in the field. In addition, since the factory is manufactured in advance, relatively high quality can be expected compared with the case where the concrete is put on the site have.

In the present embodiment, there is one precast sidewall 800, but the precast sidewall 800 may be provided more than one according to the position where the live precast manhole 10 is installed.

6, a ring 120 may be formed on the upper surface of the upper plate 100 in the hot-line precast manhole 10.

The live precast manhole 10 is manufactured at the factory and then transported to the site to be installed, so it must be connected to the lifting device for lifting and seating. At this time, the cable of the lifting device can be wound around the top plate 100 or the leg of the live precast manhole 10, but this method takes a long time and a lot of force is applied to a specific part depending on the winding position and method, The manhole 10 may be damaged.

To prevent this, the loop 120 formed on the top plate 100 is formed to be formed on the upper surface of the top plate 100 when the live-line precast manhole 10 is initially manufactured, or the live-line precast manhole 10 is manufactured And may be separately provided on the upper surface of the upper plate 100.

When the hook 120 is provided on the top plate 100 of the live precast manhole 10 and the live precast manhole 10 is desired to be placed in the lifted and installed place 30, It is possible to easily and quickly connect the cast manhole 10 and to prevent the lifting of the lifting precast manhole 10 from being damaged by preventing the force of lifting the lifting device from exerting too much force on the specific portion.

In this embodiment, the number of the rings 120 is two. However, the number of the rings 120 may be plural according to the size and weight of the live precast manhole.

 Next, a method of constructing the live precast manhole 10 according to an embodiment of the present invention will be described.

FIG. 7 is a flowchart illustrating a method of constructing a live precast manhole according to an embodiment of the present invention, and FIG. 8 is a flowchart illustrating a detailed process of a method of constructing a live precast manhole shown in FIG.

The method of constructing the live precast manhole 10 according to an embodiment of the present invention includes a step of removing a road cut and a packing layer according to a size of a construction site requiring repair, and removing a existing manhole including a manhole cover and a manhole ); (S200) of arranging the ground floor after arranging and checking the location of the obstacle embedded in the underground and installing the bottom concrete 20; (100) having at least one hole (110) to be coupled with a manhole cover, a plurality of pillars (200) integrally formed with the top plate part (100) and precast concrete and supporting the top plate part (100) The through hole 300 is formed between the two pillars 200 and is exposed to one surface of the upper plate 100 and the column 200 on the side of the through hole 300 through which the obstacle passes, Placing (S300) a precast manhole (10) having an exposed reinforcing bar (400); A step (S400) of installing a steel plate (500) at a lower outer side of the plurality of columns (200); (S500) a compaction operation in a space between the lower inside of the installed installation place (30) and the steel plate (500); A step (S600) of installing a U-shaped steel and a soil plate (600) inside the plurality of columns (200); (S700) placing concrete in the installed installation place (30); A step S800 of performing a curing and back-up operation by supplying steam to maintain a temperature of 65 ° C to 75 ° C or using a heating device using a microwave; A manhole structure constructing and packaging step (S900) for constructing a structure such as a manhole cover, and packaging a road that has been erected; And a step (S1000) of removing and watering the soil plate installed inside the plurality of columns; .

The step S600 of installing the soil plate 600 inside the plurality of columns 200 includes a step S610 of placing the side wall reinforcing bars 710 between the adjacent two pillars 200 and a step 710 and the exposed reinforcing bar 400 (S620).

Although not shown in the drawing, a step (S1000) for dismantling and waterproofing the earth plates installed on the inner side of the plurality of columns has a step of providing a channel 50 through which the obstacle is passed, So that the obstacle can be easily passed through the through hole 300.

Also, before the step S300 of seating the live-line precast manhole 10, a step of lifting and placing the precast manhole 10 in the top plate 100 is provided, It is possible to easily and quickly connect the cast manhole 10 and prevent the lifting force of the lifting device from being applied to a specific portion so that the live precast manhole 10 is not damaged.

The maintenance work can be easily performed without damaging the obstacle such as the communication line, electric wire, and various pipelines installed at the installation place of the manhole requiring repair through the above-mentioned construction method.

Although the present invention has been described in connection with the above-described embodiments, it is to be understood that the subject matter encompassed by the present invention is not limited to the disclosed embodiments. Those skilled in the art, who understands the spirit of the present invention, can readily suggest another embodiment by adding, changing, deleting, or adding elements within the scope of the same idea, but this is also within the spirit of the present invention something to do.

10: live-line precast manhole 100: upper plate
200: column 300: through hole
400: exposed reinforcing steel 500: steel plate
600: dust plate 700: side wall
800: precast sidewall

Claims (9)

The present invention relates to a precast manhole capable of performing maintenance work while maintaining a live state without damaging obstacles such as communication lines, electric wires, and various pipelines installed at a manhole installation site requiring maintenance,
An upper plate portion having at least one hole for engaging with the manhole cover,
A plurality of pillars integrally formed with the upper plate portion and the precast concrete and supporting the upper plate portion,
A through hole formed between the adjacent two pillars through which the barrier material passes,
And an exposed reinforcing bar that is exposed to the upper plate portion on the side of the through hole and embedded in the concrete when the side wall is formed,
And a steel plate for performing a compaction operation is provided in a lower portion inside the installation place installed in the outer side of the plurality of columns.
delete The method according to claim 1,
And a soil plate for pouring concrete is installed inside the installation place inside the plurality of columns.
The method according to claim 1,
Further comprising precast sidewalls integrally formed by precast concrete between the adjacent two columns. ≪ RTI ID = 0.0 > 11. < / RTI >
The method according to claim 1,
Wherein the upper plate portion is formed with a ring for lifting and seating the precast manhole.
A construction method using a live precast manhole for performing maintenance work while maintaining a live state without damaging obstacles such as communication lines, electric wires and various pipelines installed at installation sites of repairing manholes,
Removing the road cutting and pavement layer according to the size of the construction site requiring repair, and removing the existing manhole including the manhole cover and the manhole;
Confirming the location of the obstacles buried in the basement, arranging the floor and laying the floor concrete;
A plurality of pillars formed integrally with the upper plate portion and the precast concrete and supporting the upper plate portion, and a plurality of pillars formed between the adjacent two pillars, Placing a precast manhole having a through hole passing through the through hole and the exposed reinforcing bars exposed in the upper plate portion and the one side of the column to form a sidewall when the sidewall is formed;
Installing a steel plate on the outside of the plurality of columns;
A sand compaction operation is performed in a space between an inside lower part of the installed installation place and the steel plate;
Installing a U-shaped beam and a current plate on the inside of the plurality of columns;
Placing concrete within the installed installation site;
A step of curing and backing the curing and refilling operation by supplying steam to maintain a temperature of 65 to 75 ° C or using a heating device using a microwave;
A step of constructing a manhole cover, and a step of constructing and packing a manhole structure for packing a road that has been erected; And
A step of dismantling, waterproofing and sanitizing the earth plates installed inside the plurality of columns; Wherein said method comprises the steps of:
The method according to claim 6,
The step of installing the U-shaped steel and the earth plate on the inside of the plurality of columns includes the steps of arranging a side wall reinforcement between the adjacent two columns,
And connecting the reinforced side wall reinforcing bars to the exposed reinforcing bars.
8. The method of claim 7,
The method of claim 1, wherein the step of disposing and disposing the earth plates installed on the inner side of the plurality of columns comprises the step of providing a channel through which the obstacle is passed.
9. The method of claim 8,
Wherein the pre-cast manhole is provided with a ring for lifting and seating the precast manhole on the upper plate before the step of seating the precast manhole.

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