KR20220035696A - Piloti manhall and its construction method - Google Patents

Abstract

The pilot manhole of the present invention includes an upper plate having a hole on one side so that a manhole cover can be coupled thereto; a body engaging surface where one surface is joined to the upper plate, and a first body part extending a certain distance downward; and a body coupling surface where one surface is coupled to the first body portion, a plurality of pillars extending downwardly at the corners of each of the upper plate coupling surfaces, and exposed reinforcing bars placed without concrete being placed between the plurality of neighboring pillars. It may be provided with a second body portion having a.

Description

Piloti manhole and its construction method {Piloti manhall and its construction method}

The present invention relates to a piloti manhole and its construction method, which can be assembled and installed on site without moving obstacles buried underground.

In general, when water and sewage pipes, city gas pipes, fire hydrants, district heating pipes, oil pipes, power lines, and communication cables are buried underground, a manhole is installed in a certain area. Among them, manholes for power lines are installed at points where roads diverge, where pipelines diverge, when pipelines must be curved beyond the allowable curvature, on steep hillsides, before and after long bridges, and at cable connection or branch locations.

When installing manholes for power lines underground, the pour-in-place method is usually adopted, in which concrete is poured on site to construct the manhole. However, the pour-in-place construction method has the disadvantage of requiring all work to be carried out on site, making it difficult to move all equipment to the site, requiring a long construction period, and causing traffic congestion at the site.

In addition, during the process of installing a manhole, in the process of pouring the concrete side wall that forms the inside of the manhole, obstacles buried underground may be temporarily cut off or damaged during work, resulting in safety accidents and inconvenience to nearby residences.

Meanwhile, the prefabricated method is a method of prefabricating walls, upper slabs, lower floors, etc. and then assembling them on site. Although it can shorten the construction period compared to the on-site pouring method, the assembled parts are heavy, so there is a transportation process to transport them to the site. Problems with high weight and cost arise.

Korean Patent Publication No. 10-0880208 (2009. 01. 16)

The purpose of the present invention is to provide a piloti manhole and its construction method that can reduce the amount of on-site concrete pouring as much as possible when manufacturing a manhole and can be manufactured with precast concrete at a factory and assembled on-site.

Another object of the present invention is to provide a piloti manhole and its construction method that can reduce costs when transporting a heavy manhole made of precast concrete to the site.

Another object of the present invention is to provide a piloti manhole and its construction method that can be assembled without any damage to the obstacles buried in the installation site of the manhole and have an equipment inlet for later inserting equipment into the manhole. .

A piloti manhole according to one aspect of the present invention for achieving the above object includes an upper plate having a hole on one side of which a manhole cover is coupled; a body engaging surface where one surface is joined to the upper plate, and a first body part extending a certain distance downward; and exposed reinforcing bars placed without concrete being placed between the body coupling surface where the first body part and one surface are coupled, a plurality of pillars extending downwardly at the corners of each of the body coupling surfaces, and the plurality of neighboring pillars. It may be provided with a second body portion having a.

The exposed rebar is provided with an obstacle separation groove that is cut and bent in advance to avoid interference with obstacles buried in the field, and additional reinforcement that reinforces the empty space with reinforcement after the obstacle separation groove is seated on the obstacle. can do.

The body coupling surface includes a waterproof ledge provided on the upper surface, a plurality of coupling rods formed on the upper surface of the waterproof ledge and protruding to be easily coupled to the upper plate, and a sheet provided on the waterproof ledge and pressed when combined with the upper plate. It can be provided.

The sheet may be formed of a bentonite sheet on the upper surface to block rainwater and protect the structure.

The first body portion may be provided on a lower surface and include a waterproof groove for receiving the waterproof jaw, and a coupling hole for receiving the plurality of coupling rods so as to be easily coupled to the upper plate coupling surface.

The upper plate portion includes a manhole provided on the upper surface, a waterproof groove provided on the lower surface to accommodate the waterproof jaw, a coupling hole that accommodates the coupling rod so as to be easily coupled to the upper plate coupling surface, and the upper plate attachment to the coupling rod. After being coupled, a plurality of coupling nuts may be provided to fasten the coupling rod protruding above the upper plate portion.

In addition, the construction method of a piloti manhole according to one aspect of the present invention to achieve the above object includes the steps of removing the road pavement layer or demolishing the existing manhole at the manhole installation site, excavating the installation site, and locating the buried obstacles. A step of checking and arranging, and an upper plate having a hole on one side to allow a manhole cover to be coupled thereto; a body engaging surface where one surface is joined to the upper plate, and a first body part extending a certain distance downward; and a body coupling surface where one surface is coupled to the first body portion, a plurality of pillars extending downwardly at the corners of each of the upper plate coupling surfaces, and exposed reinforcing bars placed without concrete being placed between the plurality of neighboring pillars. A second body portion having a; A step of ordering a piloti manhole having a to a factory, Pouring concrete on the floor of the installation location, Seating the second body portion on the floor of the installation location, and Step of placing the first body portion on the floor of the installation location. A step of coupling to the upper part of the second body part, installing a steel plate for retaining earth on the outer side of the first body part and the second body part, installing a formwork on the inner side of the second body part, and installing the exposed reinforcing bar. A step of pouring concrete, performing concrete curing and backfilling, removing the form installed inside the second body and waterproofing and anti-corrosion the inside of the first body and the second body, The steps may include providing a sheet on the upper surface of the upper plate, coupling the upper plate to the first body and fastening it with a fastening nut, and paving the road again and opening it to traffic after coupling the upper plate.

In the step of ordering the piloti manhole to the factory, if there is an exposed reinforcing bar that does not interfere with the obstacle in the second body part, the exposed reinforcing bar can be poured into precast concrete at the factory.

In the step of seating the second body portion on the floor of the installation location, the exposed reinforcing bar may be seated by cutting and bending the portion overlapping the obstacle at a factory or field so that the exposed reinforcing bar is seated without damaging the obstacle.

The step of installing an earth-retaining iron plate on the outside of the first body part and the second body part is to provide a sand layer and a concrete layer on the outside of the earth-retaining iron plate, and using the inside of the earth-retaining iron plate as a formwork to form the formwork and the second body part. We can pour concrete together.

The step of paving the road again and opening it to traffic after combining the upper plate is to remove the paved road, disassemble the coupling nut, and then separate the upper plate and place it inside the piloti manhole when repairing the inside of the piloti manhole later. Equipment can be deployed and maintained.

According to the piloti manhole and its construction method according to the present invention, the piloti manhole can be divided into a top part, a first body part, and a second body part at the factory and manufactured from precast concrete to minimize on-site casting.

In addition, since the piloti manhole was manufactured at the factory by dividing it into the top part, first body part, and second body part, there is no need for a vehicle to transport heavy weight when transporting it from the factory to the site, and the probability of damage or accident during transport of high weight can be reduced. there is.

In addition, part of the second body is equipped with exposed rebar, and by measuring the position and size of obstacles buried at the installation site, the overlapping exposed rebar can be cut and bent during installation to place the rebar in advance to prevent damage to the obstacle. Time can be shortened during on-site casting.

In addition, the manhole is divided into the upper part and the first body part, so when repairing the manhole in the future, the upper part can be separated and equipment can be inserted into the manhole, making maintenance easier.

Figure 1 is a perspective view of a piloti manhole according to an embodiment of the present invention.
Figure 2 is a perspective view showing the piloti manhole shown in Figure 1 being seated on the floor and obstacles.
Figure 3 is a front view showing the second body portion of the piloti manhole seated according to an embodiment of the present invention.
Figure 4 is a front view showing the first body portion of the piloti manhole shown in Figure 3 seated.
Figure 5 is a front view showing the side wall concrete pouring and sand compaction of the piloti manhole shown in Figure 4.
Figure 6 is a front view showing the upper plate of the piloti manhole shown in Figure 5 combined and the road resurfaced.
Figure 7 is a flow chart showing the construction method of a piloti manhole according to an embodiment of the present invention.

Hereinafter, a piloti manhole and its construction method according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a perspective view of a piloti manhole according to an embodiment of the present invention, and Figure 2 is a perspective view showing the piloti manhole shown in Figure 1 being seated on the floor and an obstacle.

As shown in Figures 1 and 2, the piloti manhole 10 according to an embodiment of the present invention includes an upper plate 100 having a hole 110 on one side so that a manhole cover is coupled; A body engaging surface 210 on which one surface is coupled to the upper plate 100, and a first body 200 extending downward a certain distance; And a body coupling surface 210 on which one side is coupled to the first body portion 200, a plurality of pillars 310 extending downward at each corner of the body coupling surface 210, and a plurality of neighboring pillars ( 310) may be provided with a second body portion 300 including exposed reinforcing bars 320 that are placed without concrete being placed between them.

Here, the upper plate 100 may be provided with a hole 110 on one side of which a manhole cover is coupled, and on its lower side may be provided with a waterproof groove 115 and a coupling hole 116 to be seated on the body 200.

The upper plate 100 is separated from the first body 200 and the second body 300, so it can be manufactured separately at the factory, and the first body 200 and the second body 300 are first placed on site. Since the upper plate portion 100 can be manufactured after transportation, the transportation problem that occurs due to the high weight when it is a single assembly can be solved.

The coupling hole 116 may be provided in a penetrating shape so that when the coupling rod 216, which will be described later, is coupled, the coupling hole 116 protrudes out of the upper surface.

Meanwhile, the first body portion 200 may be provided with a body coupling surface 210, a waterproof groove 115, and a coupling hole 116.

The body coupling surface 210 may be provided with a waterproof jaw 215, a coupling rod 216, and a sheet 218.

The body coupling surface 210 is formed as an empty space inside and may be provided with a body weight reduction portion 211 to reduce the weight of the first body portion 200.

The body coupling surface 210 forms a waterproof ledge 215 for blocking rainwater on the upper part where the upper plate 100 is seated, and when the upper plate 100 is seated on the body coupling surface 210, the fixing force is increased and shaking does not occur. A coupling rod 216 coupled to the upper plate 100 may be provided on the waterproof ledge 215 to prevent this.

The body coupling surface 210 can be installed with a sheet 218 on the top before the upper plate 100 is seated to block rainwater and protect the structure. The sheet 218 is made of bentonite sheet to suit the characteristics of blocking rainwater and protecting the structure. It can be provided.

The waterproof ledge 215 has a half-moon shape when viewed in cross section to be accommodated in the waterproof groove 115 of the upper plate 100, and is provided with a sheet 218 therebetween before being coupled to the waterproof groove 115 to block rainwater. and shaking can be prevented.

The coupling rod 216 is made of steel, so that the fixing force can be increased by arranging it with reinforcing bars when the body part 200 is manufactured in a precast concrete format at the factory.

The sheet 218 serves as a rainwater blocker to block rainwater from flowing between the body engaging surface 210 and the upper plate 100 and serves as a cushioning material between the body engaging surface 210 and the upper plate 100 to prevent damage to the assembly. It can act as a protective material to minimize damage.

The sheet 218 may be made of a bentonite sheet that is good at blocking rainwater and acts as a buffer to block rainwater and act as a protective material.

The coupling nut 217 is made of steel so that the first body 200 is coupled to the upper plate 100 and is fastened to the protruding coupling rod 216 to increase the coupling force between the upper plate 100 and the body 200. You can do it.

The second body portion 300 may be provided with a body coupling surface 210, a pillar 310, an exposed reinforcing bar 320, a waterproof groove 115, and a coupling hole 116.

The body coupling surface 210 may be provided with a waterproof jaw 215, a coupling rod 216, and a sheet 218.

The body coupling surface 210 is formed as an empty space inside and may be provided with a body weight reduction portion 211 to reduce the weight of the first body portion 200.

The body coupling surface 210 forms a waterproof ledge 215 for blocking rainwater on the upper part where the upper plate 100 is seated, and when the upper plate 100 is seated on the body coupling surface 210, the fixing force is increased and shaking does not occur. A coupling rod 216 coupled to the upper plate 100 may be provided on the waterproof ledge 215 to prevent this.

The body coupling surface 210 can be installed with a sheet 218 on the top before the upper plate 100 is seated to block rainwater and protect the structure. The sheet 218 is made of bentonite sheet to suit the characteristics of blocking rainwater and protecting the structure. It can be provided.

The waterproof ledge 215 has a half-moon shape when viewed in cross section to be accommodated in the waterproof groove 115 of the upper plate 100, and is provided with a sheet 218 therebetween before being coupled to the waterproof groove 115 to block rainwater. and shaking can be prevented.

The coupling rod 216 is made of steel, so that the fixing force can be increased by arranging it with reinforcing bars when the body part 200 is manufactured in a precast concrete format at the factory.

The sheet 218 serves as a rainwater blocker to block rainwater from flowing between the body engaging surface 210 and the upper plate 100 and serves as a cushioning material between the body engaging surface 210 and the upper plate 100 to prevent damage to the assembly. It can act as a protective material to minimize damage.

The sheet 218 may be made of a bentonite sheet that is good at blocking rainwater and acts as a buffer to block rainwater and act as a protective material.

The column 310 extends downward at each corner of the body coupling surface 210, is fixed inside with reinforcing bars, and can be formed into a pilotis structure through precast concrete at the factory.

Pilotis are independent columns that support the upper floor of a building, and refer to the main row of the first floor without walls. By making the first floor of the building almost entirely with columns and making it continuous with the surrounding ground, it is possible to achieve the effect of not occupying the ground with the building and not interfering with traffic on the ground.

The exposed reinforcing bars 320 are reinforcing bars placed between a plurality of neighboring columns 310 and are placed together when forming the columns 310 at the factory, but only the columns are cast with precast concrete at each corner and the plurality of adjacent columns are placed together. Since concrete is not poured between the columns, they can be formed with exposed rebar.

The exposed reinforcing bar 320 secures in advance the location and size information of the obstacle 20 buried at the installation site, and cuts and bends the shape of the reinforced bar of the exposed rebar 320 so that it does not overlap the obstacle 20. A water separation groove 321 may be provided.

The exposed rebar (320) seats the obstacle separation groove (321) on the obstacle (20) and places additional rebar (322) in the empty space below the obstacle (20) to maintain the internal strength of the body portion (200) when pouring concrete. can be reinforced.

When there is a part that does not interfere with the obstacle 20 buried at the installation site, the exposed rebar 320 can be provided as the side wall 330 by pouring the exposed rebar 320 with precast concrete in advance at the factory.

Next, the process of burying the piloti manhole in the above-described embodiment at the installation site and pouring concrete on site will be described in more detail.

Figure 3 is a front view showing the second body part of the piloti manhole seated according to an embodiment of the present invention, Figure 4 is a front view showing the first body part of the piloti manhole shown in Figure 3 seated, FIG. 5 is a front view showing the side wall concrete pouring and sand compaction of the piloti manhole shown in FIG. 4, and FIG. 6 is a front view showing the top part of the piloti manhole shown in FIG. 5 being joined and the road being resurfaced.

Referring to FIG. 3, the second body portion 300 of the piloti manhole 10 is seated on the floor 400 of the installation location, and an obstacle 20 is buried between a plurality of neighboring pillars 310. It can be installed without damage to the obstacle (20).

That is, when pouring concrete on-site for the floor portion 400 at the installation site, the size and location of the buried obstacle 20 is checked and the exposed rebar 320 is cut to assemble the obstacle 20 without interference at the factory. and can be bent.

Accordingly, the period for forming the floor 400 and the period for manufacturing the first body 200 and the second body 300 overlap, thereby shortening the on-site construction period and reducing the amount of concrete to be placed on site. It can be reduced to form relatively high quality concrete.

In addition, the first body portion 200 is provided with a sheet 218 on the body engaging surface 210 of the second body portion 300, and a waterproofing device is provided on the sheet 218 and below the first body portion 200. The groove 115 and the coupling hole 116 can be combined with the waterproof jaw 215 and the coupling rod 216.

The sheet 218 serves as a rainwater blocker to block rainwater from flowing between the body portion 200 and the top plate 100 and serves as a buffer between the first body portion 200 and the second body portion 300. It can act as a protective material to minimize damage.

The sheet 218 may be made of a bentonite sheet that is good at blocking rainwater and acts as a buffer to block rainwater and act as a protective material.

The exposed rebar 320 is coupled to the obstacle 20 to supplement the internal strength of the obstacle separation groove 321, which is formed by cutting and bending the part overlapping with the obstacle 20, and is formed as an empty space. ) can be connected to additional rebar (322).

The additional reinforcing bars 322 can be connected in the same form as the exposed reinforcing bars 320 to increase the internal strength of the side wall 330 formed later.

Referring to Figure 4, the first body portion 200 can be seated on the upper surface of the second body portion 300 along with the sheet 218.

An iron plate 410 for retaining earth is attached to the outer side of the seated first body 200 and the second body 300, and concrete is placed between the plurality of neighboring pillars 310 where the exposed reinforcing bars 320 were formed. It can be seen that the side wall 330 is formed by pouring, and a sand layer after sand compaction has been formed on the outside of the earth retaining iron plate 410.

First, the earth blocking steel plate 410 is attached to one surface of the first body 200 and the second body 300 seated at the installation site, and the space between the cutting surface 30 and the second body 300 ) can be provided to block the internal space of the. In addition, the earth blocking iron plate 410 can be cut on one side so as to be connected to the obstacle without damage and attached so as not to interfere with the obstacle.

Meanwhile, the exposed reinforcing bar 320 may be provided with an iron plate 410 for retaining earth on the outside and a formwork installed on the inside, so that the iron plate 410 for retaining earth can be used in the form of a form so that the exposed reinforcing bar can be poured into concrete.

The exposed rebar 320 can be placed on site by using an earth retaining steel plate 410 on the outside and a formwork on the inside.

The space between the earth retaining steel plate 410 and the excavation surface 30 can be filled with sand 31, and the sand 31 can be compacted to harden the inner lower side of the installation site.

Accordingly, the inner lower side provided with sand 31 can prevent the surrounding buried ground from collapsing due to shock or vibration applied from the upper part later.

Meanwhile, the upper plate 100 can be manufactured in a factory and transported to the site.

Referring to FIG. 5, the upper plate 100 is coupled to the upper part of the first body 200 and may be provided with compacted sand 31 and an excavation surface 30.

First, the upper plate 100 is provided with a sheet 218 on the body engaging surface 210 of the first body 200, and the sheet 218 is coupled to the waterproof groove 115 provided in the lower portion of the upper plate 100. The hole 116 can be combined with the waterproof jaw 215 and the coupling rod 216.

The sheet 218 serves as a rainwater blocker to block rainwater from flowing between the first body 200 and the top plate 100 and serves as a cushioning material between the body 200 and the top plate 100 to prevent damage to the assembly. It can act as a protective material to minimize damage.

The sheet 218 may be made of a bentonite sheet that is good at blocking rainwater and acts as a buffer to block rainwater and act as a protective material.

Referring to Figure 6, the upper plate portion 100 and the first body portion 200 may be coupled with a coupling nut 217. The road pavement (32) can be placed on the piloti manhole (10).

The road pavement (32) can be resurfaced on the compacted sand (31), the excavated surface (30), and the piloti manhole (10) excluding the manhole.

Next, the construction method of a piloti manhole according to an embodiment of the present invention will be described.

Figure 7 is a flowchart showing the construction method of a piloti manhole according to an embodiment of the present invention.

The construction method of the piloti manhole 10 according to an embodiment of the present invention includes the steps of removing the road pavement layer and demolishing the existing manhole according to the size of the manhole installation site requiring repair (S100), digging and burying the installation site. A step (S200) of checking and arranging the position of the obstacle 20, and an upper plate 100 having a hole 110 on one side so that a manhole cover can be coupled thereto; a body engaging surface 210 on one side of which is coupled to the upper plate 100, and a first body 200 extending downward a certain distance; And between the body coupling surface 210, one side of which is coupled to the upper plate 100, and a plurality of pillars 310 extending downward at each corner of the body coupling surface 210, and a plurality of neighboring pillars 310. A step of ordering a piloti manhole 10 having a body portion 200 with exposed reinforcing bars 320 that are placed without pouring concrete in the factory (S300), and a step of pouring concrete on the floor of the installation site (S400). ), a step of seating the second body portion 300 on the floor of the installation location (S500), a step of coupling the first body portion 200 to the upper part of the second body portion 300 (S600), and the first A step of installing an earth retaining steel plate 410 on the outside of the body 200 and the second body 300 (S700), and a step of installing a formwork on the inside of the second body 300 and pouring concrete ( S800), a step in which concrete curing and backfilling work is performed (S900), and a step of removing the form installed inside the second body 300 and waterproofing and anti-corrosion the inside of the first body 200 (S1000). A step of providing a sheet 218 on the upper surface of the body coupling surface 210 and combining the upper plate 100 (S1100), and a step of paving the road again and opening it to traffic after combining the upper plate 100 (S1200). ) can be provided.

Here, in the step (S300) of ordering the piloti manhole 10 to the factory, if there is an exposed reinforcing bar 320 that does not interfere with the obstacle 20 among the second body portion 300, the exposed reinforcing bar without interference ( 320) can be provided as a side wall 330 by pouring precast concrete.

Accordingly, the number of side walls 330 to be cast on site can be reduced, and the on-site casting period can be reduced.

Meanwhile, in the step (S500) of seating the second body portion 300 on the floor of the installation site, in order for the exposed reinforcing bar 320 to be seated without damaging the obstacle 20, the part overlapping with the obstacle 20 is removed from the factory. Alternatively, the obstacle separation groove 321 can be provided by cutting and bending at the site.

In addition, after seating the second body portion 300 in accordance with the obstacle separation groove 321, additional reinforcing bars 322 are connected to the exposed reinforcing bars 320 in the same arrangement to increase the internal strength of the side wall 330 to be provided later. It can be increased.

In addition, the step of installing the earth retaining steel plate 410 on the outside of the first body 200 and the second body 300 (S700) is to apply sand 31 and road pavement to the outside of the earth retaining steel plate 410. It is provided as (32), and the inside of the earth retaining steel plate 410 is used as a formwork, and concrete is poured on site along with the formwork to provide a side wall 330 using the exposed reinforcing bars 320 as a framework.

Accordingly, the earth retaining steel plate 410 can serve as a formwork to cut off the cut-out surface 30 on the outside and allow the exposed reinforcing bars 320 to form the side wall 330 on the inside.

Through this, the pilot manhole 10 can be divided into the upper plate 100, the first body 200, and the second body 300 and manufactured with precast concrete to minimize the amount of concrete placed on site. . In addition, since it is divided into the upper plate 100, the first body 200, and the second body 300, there is no need for a vehicle to transport heavy weight when transporting from the factory to the site, and there is a possibility of damage or accident during transport. has been lowered, and the process of settling into the installation location can be done easily with a relatively reduced weight.

Here, the pilot manhole 10 is made by cutting and bending the exposed rebar 320 formed between the plurality of neighboring pillars 310 in advance by cutting and bending the overlapping area in consideration of the position and size of the obstacle 20 buried at the installation site. The obstacle separation groove 321 is formed and, after being seated, additional reinforcing bars 322 are connected to a portion of the exposed reinforcing bars 320 to increase the internal strength of the side wall 330 to be cast later. Additionally, the amount of rebar to be placed on site is significantly reduced, shortening the hiring time for skilled experts and also shortening field work time.

In addition, when the manhole is repaired in the future by assembling the upper plate 100 and the first body 200 separately, the road pavement is removed, the coupling nut 217 bound to the upper plate 100 is separated, and the upper plate ( 100) can be disassembled and equipment can be inserted into the pilot manhole (10), making maintenance easy.

In the above, the piloti manhole and its construction method according to an embodiment of the present invention have been described, but the spirit of the present invention is not limited to the embodiments presented in this specification. In addition, a person skilled in the art who understands the spirit of the present invention will be able to easily suggest other embodiments by adding, changing, deleting, or adding components within the scope of the same spirit, but this is also within the spirit scope of the present invention. something to do.

10: pilot manhole 20: obstruction
30: cutting surface 31: sand
32: Road pavement 100: Top plate
200: first body portion 210: body coupling surface
215: waterproof jaw 216: coupling rod
217: coupling nut 218: seat
300: second body portion 310: pillar
320: exposed rebar 321: obstacle separation groove
322: Additional rebar 330: Side wall
400: Bottom 410: Steel plate for mud blocking

Claims (11)

An upper plate having a hole on one side to allow a manhole cover to be coupled thereto;
a body engaging surface where one surface is joined to the upper plate, and a first body part extending a certain distance downward; and
A body coupling surface where the first body part and one surface are coupled, a plurality of pillars extending downwardly at the corners of each of the body coupling surfaces, and exposed reinforcing bars placed without concrete being placed between the plurality of neighboring pillars. A piloti manhole including a second body portion provided. According to clause 1,
The exposed rebar is provided with an obstacle separation groove that is cut and bent in advance to avoid interference with obstacles buried in the field, and additional reinforcement that reinforces the empty space with reinforcement after the obstacle separation groove is seated on the obstacle. Piloti manhole characterized in that. According to clause 1,
The body coupling surface includes a waterproof ledge provided on the upper surface, a plurality of coupling rods formed on the upper surface of the waterproof ledge and protruding to be easily coupled to the upper plate, and a sheet provided on the waterproof ledge and pressed when combined with the upper plate. A piloti manhole characterized by being provided. According to clause 3,
The sheet is a piloti manhole, characterized in that the upper surface is formed of a bentonite sheet to block rainwater and protect the structure. According to clause 4,
A piloti manhole, characterized in that the first body part is provided on a lower surface and has a waterproof groove for receiving the waterproof jaw, and a coupling hole for receiving the plurality of coupling rods so as to be easily coupled with the upper plate coupling surface. According to clause 5,
The upper plate portion includes a manhole provided on the upper surface, a waterproof groove provided on the lower surface to accommodate the waterproof jaw, a coupling hole that accommodates the coupling rod so as to be easily coupled to the upper plate coupling surface, and the upper plate attachment to the coupling rod. A piloti manhole characterized in that it has a plurality of coupling nuts for fastening the coupling rod protruding above the upper plate after being coupled. Removing the road pavement layer or demolishing the existing manhole at the manhole installation site,
Confirming and organizing the location of the installation site excavation and buried obstacles,
An upper plate having a hole on one side to allow a manhole cover to be coupled thereto; a body engaging surface where one surface is joined to the upper plate, and a first body part extending a certain distance downward; and a body coupling surface where one surface is coupled to the first body portion, a plurality of pillars extending downwardly at the corners of each of the upper plate coupling surfaces, and exposed reinforcing bars placed without concrete being placed between the plurality of neighboring pillars. A step of ordering a piloti manhole having a second body portion having a to the factory,
A step of pouring concrete on the floor of the installation site,
Seating the second body portion on the floor of the installation location,
coupling the first body to the upper part of the second body;
Installing an iron plate for retaining earth on the outside of the first body and the second body;
Installing a formwork on the inside of the second body and pouring concrete into the exposed reinforcing bars;
Steps in which concrete curing and backfilling work is performed;
Removing the form installed inside the second body and waterproofing and anti-corrosion the inside of the first and second body parts;
Providing a sheet on the upper surface of the upper plate, coupling the upper plate to the first body, and fastening with a fastening nut;
A construction method for a piloti manhole including the step of combining the upper plates, paving the road again, and opening it to traffic. According to clause 7,
The step of ordering the piloti manhole to the factory is
When there is an exposed reinforcing bar that does not interfere with the obstacle in the second body part, a piloti manhole construction method is characterized in that the exposed reinforcing bar is poured with precast concrete at a factory. According to clause 8,
The step of seating the second body part on the floor of the installation location is
In order for the exposed rebar to be seated without damaging the obstacle, the piloti manhole construction method is characterized in that the part overlapping the obstacle is cut and bent at a factory or field and then seated. According to clause 9,
The step of installing an iron plate for retaining earth on the outside of the first body and the second body is
A method of constructing a piloti manhole, characterized in that the outer side of the earth retaining steel plate is provided with a sand layer and a concrete layer, and the inner side of the earth retaining steel plate is used as a form to pour concrete together with the form. According to clause 10,
The step of paving the road again and opening it to traffic after combining the upper deck is
When repairing the inside of the piloti manhole later, the piloti manhole construction method is characterized in that the paved road is removed, the coupling nut is disassembled, the upper plate is separated, and equipment is inserted into the piloti manhole for maintenance.

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