JP3377981B2 - Pavement structure around the upper part of the manhole - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pavement structure paved around the upper part of a manhole.

[0002]

2. Description of the Related Art As pavement work including installation of a lid receiving frame over the opening of a manhole, a temporary lid is attached on the opening of a manhole in an unpaved road surface to pave the road. Remove the lid and the pavement above it,
BACKGROUND ART There is known a construction in which after a lid receiving frame and a lid are attached to an open manhole, a pavement material is laid in a cavity around the lid receiving frame attached on an opening of the manhole to a height of a pavement surface.

On the pavement surface on which the manhole is installed, the pavement thickness becomes insufficient due to an increase in traffic due to road traffic and an increase in the size of automobiles, and the steps and cracks between the upper part of the manhole and the pavement surface are cracked. The deterioration of the manhole cover receiving frame itself, such as wear and corrosion, accelerates so-called aging around the manhole.The progress of these aging not only hinders road structure and traffic, but also causes vibration and vibrations associated with passing vehicles. It is a cause of noise.

As a repair work for the upper part of the manhole in such a state, after removing the pavement around the cover receiving frame of the manhole together with the cover receiving frame of the manhole, and attaching the cover receiving frame and the cover to the opened manhole, the cover is placed on the opening of the manhole. In general, construction is performed in which a paving material is laid in a cavity around the attached lid receiving frame up to the height of the paving surface. From the viewpoint of early traffic release on the road, it is desired that the above-mentioned construction be completed in a short time from the start to the traffic release.

The time from the start of this construction to the opening of traffic depends more on the strength of the pavement material to be paved in the hollow portion around the lid receiving frame after the lid receiving frame and the lid are attached to the opened manhole than the work itself. . That is, the strength of the paving material required at the time of opening the traffic is about 120 kg / cm ² , and the earlier the paving material reaches 120 kg / cm ² , the faster the opening of the traffic. Therefore, a pavement material that can quickly obtain a strong initial strength is required, and therefore it has been proposed to use a cement-based or epoxy-based pavement material that has an extremely early initial strength.

[0006]

As described above, when a pavement material having an initial strength of ultra-rapid early strength is used, the traffic can be opened quickly. However, as described above, this pavement material has an initial strength of ultra-rapid early strength. Therefore, the required strength is 600 to 700 kg more than the required strength.
Some reach up to / cm ² .

As a result, when repairing the upper part of the manhole,
Removal of the lid receiving frame is accompanied by removal of the pavement structure paved around it, at this time, when the pavement structure is composed of a pavement material of which the initial strength is super early strength It is extremely difficult to crush the pavement structure. For this reason, the removal of the lid receiving frame and the surrounding pavement structure will raise the whole as a unit, and the removal machine necessary for the removal requires a great force, which not only makes the work difficult, The raised pavement structure remains as a large nodule, and there is a problem that it is difficult to dispose of it.

It is an object of the present invention to provide a pavement structure paved around the upper part of the manhole so that the removal work can be easily performed in repairing the upper part of the manhole.

[0009]

In order to achieve the above object, the invention according to claim 1 is a ring-shaped pavement structure paved around the upper part of a manhole, wherein the pavement structure comprises: It is characterized in that the edging bodies are interposed in the longitudinal direction at appropriate intervals so as to be divided into small portions in the circumferential direction.

With such a structure, the pavement structure paved around the upper part of the manhole can be easily divided into small pieces by the edging body, which allows the pavement structure to have an extremely high strength when repairing the upper part of the manhole. Even if it consists of pavement material, it can be divided into small pieces and removed, there is no need for a powerful removal machine for that removal, the removal work can be done easily, and since it is removed as a small nodule, Disposal after removal is also easy.

A second aspect of the present invention is characterized in that the edging body according to the first aspect comprises a pavement structure and a plate body made of a material capable of being peeled off at an adhesive surface thereof.

By doing so, when a force is applied to the pavement structure, the adhesive surface between the pavement structure and the edging body is peeled off, whereby the pavement structure is easily subdivided.

A third aspect of the present invention is characterized in that the edging body according to the first aspect is made of a material having a lower breaking strength than the pavement structure.

By doing so, when a force is applied to the pavement structure, the edging body is broken, whereby the pavement structure is easily subdivided.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an example of an embodiment of a pavement structure paved around a manhole upper portion according to the present invention will be described in detail with reference to the drawings. 1 is a vertical cross-sectional view showing an example of a pavement structure paved around the upper part of a manhole, FIG.
[Fig. 3] is a cross-sectional view of a pavement structure.

In the figure, 1 is a manhole, 2 is a lid receiving frame which is attached to the upper part of the opening of the manhole 1 through an adjusting ring 3 for height adjustment, and 4 is the upper periphery of the manhole 1, that is, the lid receiving frame 2. The ring-shaped pavement structure is formed by paving a pavement material in a ring-shaped cavity formed between the periphery and the pavement base 5.

In the ring-shaped pavement structure 4, edging members 6 are vertically interposed at appropriate intervals so that the paving structure 4 can be subdivided in the circumferential direction. The interposition of the edging body 6 in the pavement structure 4 may be such that the edging body 6 intervening the paving structure body 4 can be easily divided, and the pavement structure body 4 is not necessarily completely separated by the edging body 6. It doesn't need to be in a state.

Rather, it may be preferable that a part of the pavement structure 4 on both sides of the edging body 6 is connected to the pavement structure 4 in order to maintain the integrity of the pavement structure 4. In this example, the edging body 6 is embedded inside the pavement structure 4, and the paving structure 4 is interposed so as to be in a continuous state around the outer periphery of the edging body 6.

Further, in this example, in order to maintain the integrity of the pavement structure 4, a through hole 7 is formed in the edging body 6, and the pavement structure 4 is in a continuous state through the through hole 7. However, when the pavement structure 4 is connected to the outer periphery of the edging body 6 or through the through hole 7,
It is necessary that it is not so difficult to make the small division by the edging body 6.

Further, the pavement structure 4 by the edging body 6
Although the number of divisions of 8 is 8 in this example, this is required due to the ease of removal work and post-removal processing, and is not particularly limited.

The shape and material of the edging body 6 are not particularly limited as long as the edging can be performed so that the pavement structure 4 can be divided. Edge cut body 6
As the material, for example, a material that can be peeled off from the pavement structure 4 and its adhesive surface, such as a plate formed of metal, synthetic resin, paper, wood, or a material having a lower breaking strength than the pavement structure 4,
For example, a gypsum board or the like may be used.

With this structure, when repairing the upper portion of the manhole 1, the pavement structure 4 together with the lid receiving frame 2 is repaired.
When removing the, the pavement structure 4 by the edging body 6,
This makes it possible to easily subdivide the manhole 1, and to repair the upper part of the manhole 1 by subdividing the pavement structure 4 even if the pavement structure 4 is made of super early strength pavement material. Since it is possible to remove it, there is no need for a powerful removal machine, the removal work can be done easily, and since it is removed as a small nodule, disposal after removal is also easy.

When the edging body 6 is composed of the pavement structure 4 and a plate made of a metal or a synthetic resin which can be peeled off at the adhesive surface thereof, when a force is applied to the pavement structure 4, the pavement structure 4 The adhesive surface between 4 and the edging body 6 is peeled off,
This allows the pavement structure 4 to be easily subdivided.

Further, the edging body 6 is the pavement structure 4
When the pavement structure 4 is made of a material having a lower breaking strength, a force is applied to the pavement structure 4 to break the edging body 6, whereby the pavement structure 4 can be easily subdivided.

In this example, the lid receiving frame 2 is mounted on the opening of the manhole 1 through the adjusting ring 3, but the adjusting ring 3 is divided into a plurality of concretes in the circumferential direction as shown in FIG. And the like. Each block 3a has a structure in which the blocks 3a are adhered and integrated by an adhesive 3b such as mortar or resin. By doing so, even when the adjustment ring 3 is removed when repairing the upper portion of the manhole 1, it is possible to easily divide the adjustment ring 3 into blocks 3a, which facilitates the removal work and processing.

[0026]

As described above, according to the pavement structure around the upper part of the manhole according to the present invention, the pavement structure has the edging bodies interposed at appropriate intervals in the longitudinal direction so that the pavement structure can be subdivided in the circumferential direction. Since it is configured, the pavement structure paved around the upper part of the manhole can be easily subdivided by the edging body, which allows the pavement structure to have an extremely early and strong pavement when repairing the upper part of the manhole. Even if it is made of wood, it can be divided into small pieces and removed, there is no need for a powerful removal machine for removal, and the removal work can be easily performed, and the pavement structure can be a small nodule. Since it is removed as, it is possible to easily perform the disposal work after the removal.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an example of an embodiment of a pavement structure around a manhole upper portion according to the present invention.

2 is a cross-sectional view of the pavement structure shown in FIG.

3 is a cross-sectional view of the adjustment ring shown in FIG.

[Explanation of symbols]

1 manhole 2 Lid receiving frame 3 adjustment ring 4 Pavement structure 5 paved roadbed 6 edging body 7 through holes

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroshi Saito 2-6-2 Otemachi, Chiyoda-ku, Tokyo Within Tokyo Sewer Service Co., Ltd. (72) Saburo Koiwa 562-32, Sezaki-cho, Soka-shi, Saitama ( 72) Inventor Yuji Imazaki 1-8-13 Ekoda, Nakano-ku, Tokyo (56) Reference JP-A-10-266120 (JP, A) JP-A-4-131407 (JP, A) JP-A-8-326008 ( JP, A) JP 64-83725 (JP, A) JP 6-158677 (JP, A) Actual Kaihei 7-10004 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E01C 9/00 E01C 23/00 E02D 29/12

Claims (3)

(57) [Claims] 1. A ring-shaped pavement structure paved around the upper portion of a manhole, wherein the pavement structure is provided with edging bodies interposed at appropriate intervals in the longitudinal direction so that the paving structure can be subdivided in the circumferential direction. The pavement structure around the upper part of the characteristic manhole. 2. The pavement structure around the upper part of the manhole according to claim 1, wherein the edging body is a pavement structure and a plate body made of a material that can be peeled off at an adhesive surface thereof. 3. The pavement structure around the upper portion of the manhole according to claim 1, wherein the edging body is formed of a material having a lower breaking strength than the pavement structure.