KR20120006225A

KR20120006225A - Manhole having dual structure

Info

Publication number: KR20120006225A
Application number: KR1020100066845A
Authority: KR
Inventors: 이장섭
Original assignee: 동원철강 주식회사
Priority date: 2010-07-12
Filing date: 2010-07-12
Publication date: 2012-01-18

Abstract

The present invention relates to a manhole having a double structure, and more particularly, the manhole body is made of a double structure of the inner tube and the exterior to increase the durability to reduce the cost of maintenance or replacement of the manhole, welding the appearance and sleeve The present invention relates to a manhole having a dual structure that perfectly secures watertightness through melt bonding of bonds, inner tubes, and branch tubes.
The present invention is a manhole consisting of a cylindrical body having a space formed therein, and a sleeve coupled to the outer surface of the body and the branch pipe is inserted into the body, the body 30 is an inner tube made of fiber-reinforced plastics on the inside ( 31) and the outer shell 32 is made of a corrugated steel pipe on the outside of the inner tube 31.

Description

Manhole with dual structure {MANHOLE HAVING DUAL STRUCTURE}

The present invention relates to a manhole having a double structure, and more particularly, the manhole body is made of a double structure of the inner tube and the exterior to increase the durability to reduce the cost of maintenance or replacement of the manhole, welding the appearance and sleeve The present invention relates to a manhole having a dual structure that perfectly secures watertightness through melt bonding of bonds, inner tubes, and branch tubes.

In general, manholes are installed below the floor of a city road or sidewalk at an appropriate distance for maintenance of various urban infrastructure such as sewerage, waterworks, telecommunications, and power line facilities.

The body of this manhole is manufactured and used in concrete or fiber reinforced plastics.

However, the concrete manhole has a large weight, which results in poor workability, floating settling, weak impact, and poor watertightness due to cracking in the manhole after construction.

In order to solve this problem, a manhole made of a resin-based material such as fiber-reinforced plastic has been developed, but there is a problem in that durability to withstand side pressure or earth pressure is inferior.

On the other hand, it has been filled with cement mortar to prevent leakage between the manhole body and the branch pipe connected to the body, but it is insufficient to secure the watertightness of the connection part, and frequent repair should be performed when the connection part is cracked due to floating settlement. There was inconvenience.

In addition, Korean Patent Laid-Open Publication No. 10-2006-123082 discloses a manhole divided up and down based on a connection port to which a connector is connected, and the inner circumference of the connection port and the outer circumference of the connection pipe contacting the connector are connected to each other by a watertightness. And it is disclosed to improve the workability, but because the manhole should be divided into upper and lower parts, the cost is high, and it is divided into two parts, so there are many difficulties in transportation and storage, and even after assembling with the sewer pipe, the interconnectivity is not guaranteed. Therefore, there was a problem that there is a risk of leakage in the whole surface as well as the connection portion of the sewer pipe.

The present invention has been made to solve the above problems, an object of the present invention is to increase the durability against side pressure or earth pressure due to the inner body made of fiber-reinforced plastic, the body made of a dual structure of the appearance made of corrugated steel pipe, The present invention provides a manhole having a double structure that can completely secure watertightness in and out of the outer and outer sleeves by welding and sleeve and inner and branch pipes.

The configuration of the present invention for achieving the above object, in the manhole consisting of a cylindrical body having a space formed therein, and a sleeve coupled to the outer surface of the body and the branch pipe is inserted into the body, the body 30 The inner tube 31 is made of fiber-reinforced plastics on the inside, and the outer tube 32 is characterized in that the outer shell made of corrugated steel pipe.

Here, the sleeve 40 is made of a steel pipe, it is preferable that one side of the sleeve 40 to be coupled to the body 30 is welded to the exterior 32 of the body 30.

In addition, the sleeve 40 is preferably formed of a corrugated pipe.

And, the branch pipe 50 is made of a resin tube, the outer peripheral surface of the branch pipe 50 is preferably melt-bonded with the inner tube 31 of the body (30).

According to the present invention configured as described above, due to the body consisting of a dual structure of the inner tube and corrugated steel pipe made of fiber-reinforced plastic to increase the durability against side pressure or earth pressure to replace the maintenance cost or manhole due to floating settlement phenomenon, etc. It is possible to reduce the cost, and due to the welded joint of the exterior and the sleeve and the melted joint of the inner tube and the branch pipe, the watertightness There is an advantage to secure.

1 is a front view of a manhole having a dual structure according to the present invention,
2 is a front view of a branch pipe connected to a manhole having a dual structure according to the present invention;
3 is a cross-sectional view showing a state of coupling between the outer tube and the sleeve, the inner tube and the branch pipe according to the present invention;
4 is a cross-sectional view showing that the sleeve according to the invention made of a corrugated steel pipe,
5 is a perspective view showing a manhole having a dual structure according to the present invention.

Hereinafter, a manhole having a dual structure according to the present invention will be described in detail.

1 to 4 show a manhole having a dual structure according to the present invention.

As shown in the figure, the manhole having a dual structure according to the present invention is a tubular body 30 having a space formed therein, and the branch pipe 50 is coupled to the outer surface of the body 30 therein It consists of a sleeve 40 to be retracted.

Here, the body 30 is composed of a dual structure consisting of an inner tube 31 made of fiber reinforced plastics (FRP: Fiber Reinforced Plastics) on the inside and an outer shell 32 made of a corrugated steel pipe on the outside of the inner tube (31). .

First, an upper plate 10 having a manhole cover is installed on an upper side of the body 30, and a lower plate 20 that blocks a bottom of the body 30 is installed below the body 30.

Here, the upper plate 10 and the lower plate 20 is usually made of a concrete material, it will be obvious that it can also be used in other materials than the concrete material.

In addition, as shown in FIG. 2, the inner tube 31 of the body 30 is made of fiber-reinforced plastic, and the exterior 32 is made of corrugated steel tube.

In other words, the appearance made of a corrugated steel pipe on the outer circumferential surface of the inner tube 31 to effectively disperse the side pressure or earth pressure applied to the body 30 to improve durability and to increase corrosion resistance to moisture contained in the soil ( 32) to combine.

Here, in order to further increase the durability against the side pressure or earth pressure of the body 30, it may be preferable that the inner tube 31 and the exterior 32 are spaced apart at regular intervals.

In addition, the sleeve 40 is provided with a passage through which the branch pipe 50 penetrates into the body 30 and is formed to protrude to the outside of the body 30 and has a durability and corrosion resistance. Is done.

At this time, one side of the sleeve 40 which is coupled to the exterior 32 of the body 30 is welded to the exterior 32 of the body 30.

In other words, one side of the sleeve 40 made of steel pipe and the corrugated steel pipe of the outer appearance 32 are welded to secure the watertightness into the manhole.

In addition, a separate corrugated steel pipe may be further formed on the outer circumferential surface of the sleeve 40 to form a double structure.

In addition, as shown in Figure 4, the sleeve 40 is made of a steel pipe, but it is preferable to form a corrugated pipe of a constant pitch to further increase the durability and corrosion resistance.

Meanwhile, as illustrated in FIG. 3 or 4, the inner tube 31 of the body 30 made of fiber reinforced plastic is melt-bonded with the outer circumferential surface of the branch tube 50 made of a resin tube.

In other words, the inner tube 31 made of fiber-reinforced plastics and the branch tube 50 made of the same resin are melt-bonded to form the inner tube 31 and the branch tube 50 integrally, thereby providing watertightness into the manhole. It will be more secure.

According to the present invention configured as described above, the body 30 is coupled to the inner tube 31 made of fiber-reinforced plastic and the outer shell 32 made of corrugated steel pipe effectively distributes the side pressure or earth pressure, thereby increasing durability. Maintenance costs are low, and the manhole replacement time is also extended to reduce costs.

In addition, one side of the sleeve 40 and the exterior 32 is welded to ensure watertightness, and the outer circumferential surface of the branch pipe 50 and the inner tube 31 are integrally formed by melt bonding to further secure watertightness. Will be.

In addition, the welding coupling of the sleeve 40 and the exterior 32 and the melting coupling of the branch pipe 50 and the inner tube 31 may prevent the sewage from being exposed to the outside of the manhole by leaks made in the manhole. However, water pollution will be blocked in advance.

On the other hand, the manhole having a dual structure according to the present invention has been described with reference to the specific embodiments and the accompanying drawings as described above, which can be easily carried out self-invention having ordinary knowledge in the technical field to which the present invention belongs. It is intended to describe in detail as much as possible, and this does not mean that the technical spirit and scope of the present invention are limited, and it will be obvious that the deformation may be appropriately made according to the use purpose of the manhole having a dual structure. .

10: top plate 20: bottom plate
30: body 31: inner tube
32: appearance 40: sleeve
50: branch pipe

Claims

In the manhole consisting of a cylindrical body having a space formed therein, and a sleeve that is coupled to the outer surface of the body and the branch pipe is inserted into the body,
The body 30 is a manhole having a dual structure, characterized in that consisting of an inner tube (31) made of fiber-reinforced plastic on the inside, and an outer shell (32) consisting of a corrugated steel pipe on the outside of the inner tube (31).

The method of claim 1,
The sleeve 40 is made of a steel pipe,
Manhole having a dual structure, characterized in that the one side of the sleeve 40 is coupled to the body 30 is welded to the exterior 32 of the body (30).

The method of claim 2,
The sleeve 40 is a manhole having a dual structure, characterized in that formed by a corrugated pipe.

The method according to claim 1 or 2,
The branch pipe 50 is made of a resin pipe,
The outer circumferential surface of the branch pipe (50) is a manhole having a dual structure, characterized in that the melt coupling with the inner tube (31) of the body (30).