KR960004915B1 - Overlay method for height adjustable manhole - Google Patents

Abstract

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Description

Overlay method

1 to 4 are cross-sectional views showing the process of the overlay method according to the present invention,

1 is the overlay completion state.

2 is a state in which the overlay of the upper part of the manhole is cut and the cutting pavement plate and the manhole frame are removed.

3 is the state after installing the manhole frame.

4 shows the state after pouring the packing material around the manhole frame, respectively.

* Explanation of symbols for main parts of the drawings

1: manhole frame 2: cover

3: release material 4: packing layer

5: Oberrey 6: manhole foundation wall

7: cutting fabric plate 8: manhole frame peeler

9: fixed foundation 10: packing material

20: open part 30: space part

The present invention relates to an overlay process, and more particularly, to an overlay process for a pavement comprising a manhole frame.

In general, in order to pave the road with a manhole in the construction section, construction is carried out in the following order.

1. Dig manhole around manhole with compressor and breaker.

2. Prior to paving, adjust the height of the already installed manhole and wrap it to eliminate the step with manhole for smooth transportation.

3. Remove the stepped packing site for overlay packaging. At this time, of course, the compressor and the breaker are mainly used.

4. Use the dump truck, asphalt finisher, road roller, tire roller, etc. to complete the construction by surface layering according to the paving height and manhole height.

In the road pavement including such a conventional manhole, the step where the pavement surface and the manhole cover abut easily occurs. This step reduces the quality of the pavement. This error also causes shock sound and vibration to occur at the start of traffic.

In the case of the pavement surface that has already been constructed, if the crack or damage is increased due to the passage of time and the pavement thickness is insufficient due to the passage of the vehicle, the pavement surface is overlaid with the thickness required for the pavement repair.

However, the conventional overlay method has a problem such that the workability of the overlay is remarkably deteriorated because the overlay where the manhole frame is placed in the paving section needs to be constructed while bypassing the manhole frame.

The present invention has been invented to solve this problem in view of the prior art, and its object is to overlay the surface of the pavement including the manhole frame, the workability of the overlay can be constructed very good It is to provide an overlay method.

In order to achieve the above object, the overlay method of the present invention includes a process of removing a cutting packaging plate and a manhole frame through a known manhole frame peeler through an open portion of the manhole frame, and the wrap around the manhole frame is the overlay layer. The pavement is cut into a tubular shape from above, and at the same time, the overlay layer is peeled off from the top of the cover, and the peeling material and the cover are removed to open the manhole frame, and the paving material is poured into the space around the manhole frame. In the overlay method, a step of covering the surface of the manhole frame and the cover with a release material and overlaying the surface of the packaging layer and the surface of the release material with the overlay layer, a coarse adjustment material having a thick thickness on the manhole base wall, and a relatively fine A fixed foundation consisting of a combination of thin adjustment microadjustable materials is constructed, and at the same time this fixed foundation The manhole frame is formed on the process.

In the overlay method of the present invention composed of the above process, the construction of the overlay layer and cutting the manhole frame part to lift the entire manhole frame, and then the fixed foundation and to place the packaging material in the space, the construction to be constructed Even if there is a manhole frame on the pavement surface of the section, workability is remarkably improved since it is constructed by bypassing it.

Hereinafter, the overlay method of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 are cross-sectional views showing the process of the overlay method according to the present invention.

In the figure, reference numeral 1 denotes a manhole frame, and 2 denotes a cover provided on an upper portion of the manhole frame 1. First, as shown in FIG. 1, on the surface of the cover 2 of the manhole frame 1, in order to prevent the mortar of concrete from being absorbed by the roadbed in a circular underlay paper (concrete paving). It is a paper covering the roadbed in order to reduce the roadbed frictional stress after hardening of concrete, and in general, a release layer 3 made of kraft paper, polyethylene film, taboring paper, and the like is adhered to the pavement layer ( The overlay layer 5 of the required thickness including the surface of the release material 3 on the surface of 4) is constructed without bypassing the manhole frame 1.

The release material 3 is later used to easily peel off the overlay layer 5 from the surface of the manhole frame 1, and may be replaced by various chemical agents such as a peeling treatment agent, for example, in addition to the old ring.

In this case, in order to bond the cement pavement layer 4 and the overlay layer 5, which is an asphalt mixture layer, it is preferable to apply a tack coat to the surface of the lower layer by spreading a small amount of bitumen material. .

This pre-overlay process is completely different from the conventional post overlay process. In other words, the overlay is constructed entirely including the cover 2 without avoiding the manhole frame 1. This improves workability because it is intended to simplify overlay construction.

Subsequently, as shown in FIG. 2, from above the overlay layer 5, the pavement layer 4 around the manhole frame 1 is circularly shaped by a road cutting machine (not shown). It is cut to the depth of the upper surface.

When cutting around the manhole frame 1, when cutting into a cylindrical shape, for example, a road surface circular cutter having a cylindrical bit as disclosed in Japanese Patent Application Laid-Open No. 61-52283 can be used. Can be.

In addition, in order to specify the cutting center from the overlay layer, a position of the cover of the inner manhole may be explored using a known metal detector or the like.

Subsequently, the overlay layer 5 is peeled off from the upper part of the cover 2, the peeling material 3 and the cover 2 are removed and opened, and the known manhole frame peeler 8 is opened through this open part 20. Passes through and the cutting packaging plate 7 and the manhole frame 1 are lifted upwards and removed, and at this time, the cutting packaging plate 7 is crushed.

This crushing may be removed using a breaker, but it is preferable to remove it with a manhole frame as disclosed in Japanese Patent Application No. 61-33933 from the standpoint of improving workability and preventing noise and vibration. .

That is, in order to integrally remove the cutting packaging plate 7 and the manhole frame 1, for example, as disclosed in Japanese Patent Application Laid-Open No. 59-156942 or Japanese Patent Application Laid-Open No. 59-193679. Similarly, a manhole lifter or a manhole frame peeler which inserts a wedge body or an arm with a radially enlarged diameter inside the manhole frame between the manhole frame and the manhole base wall can be selectively used as necessary.

Referring to FIG. 3, the manhole frame 1 is installed on the manhole base wall 6 at the same time as the fixed foundation 9 that allows height adjustment during construction is constructed at a predetermined height. .

The fixed base 9 is a thick coarse adjustment material composed of precast concrete, for example, which is largely adjustable, and an epoxy system, which is a kind of thermosetting resin, which is relatively fine-adjustable, for example. It is composed of a combination of thin and fine adjustment material composed of epoxy resin concrete.

The precast concrete is a concrete member that is moved or assembled into place after the concrete is hardened, that is, a concrete member that is transported and used on site as a concrete product manufactured in advance in a factory, and can greatly shorten the air and prevent construction pollution, This means that you can reduce the administrative costs.

Finally, as shown in FIG. 4, the conventional packaging material 10 is poured into the space 30 around the manhole frame 1 to the height of the overlay layer 5, thereby completing the entire process of the overlay process of the present invention. do.

The manhole frame 1 may be a previously dismantled one, but preferably a separate one pre-treated so as to be ready for use immediately.

Next, the effect of this invention is demonstrated in detail.

The overlay method of the present invention can be systemized in a single process by serializing the process up to circular cutting, demolition work, restoration work, traffic opening.

This system enables a single workbench to be constructed in one process, eliminating the need for temporary restoration of the site during construction, and continuing work without leaving the site.

In addition, the three overlay process system vehicles equipped with dedicated tools, machines, and materials, which can be referred to as the factories of the upper part of the manhole, will be greatly reduced in construction time.

Moreover, according to the overlay method of this invention, low noise of 74 dB (A) or less is achieved. That is, in the conventional method, since the periphery is cut into a square by a cutting process and a concrete breaker is used in the crushing process, a large noise or vibration is generated, but in the overlay method of the present invention, a cutting is generated that generates the largest noise during the process. In the process, the low noise circular cutting cutter cuts the required minimum area and cuts quickly with low noise and low vibration.

Even in the demolition process, the truck crane pulls out the manhole together with the surrounding asphalt mass, so that noise and vibration are hardly generated.

In addition, a low noise and low vibration circular voltage generator is used for the voltage to prevent noise and vibration.

It was confirmed that the construction noise generated at the cutting of the road surface of the overlay method of the present invention was `` less than 74dB (A) of 7m four-way energy average on the machine side. ''

In addition, the overlay method of the present invention is easy to repair.

Conventionally, maintenance of manholes due to road construction has caused various problems in pavement overlay construction, cutting overlay construction, pavement replacement construction, pavement construction, and the like.

For example, in the new paving construction, the hole in which the manhole is inserted remains convex, so the workability of a vehicle or heavy machinery, etc. is remarkably deteriorated, or the adjustment part is damaged, and it is necessary to correct the misalignment of repair or movement. there was.

However, the overlay method of the present invention enables construction by checking the manhole position with a detector after completion of the entire paving process without the need for temporary restoration or construction of the manhole construction required by the conventional construction method.

In addition, since the lid height adjustment or replacement work is carried out after the paving work, no step is generated, thereby ensuring the safety of traffic.

In addition, since the construction is performed in accordance with the inclination of the longitudinal and horizontal cross sections of the road pavement, the finish can realize flatness with the road surface.

And since the paving work can be carried out without worrying about the manhole, sufficient paving voltage is also possible, thereby satisfying the density of the paving.

As described above, according to the overlay method of the present invention, the overlay layer is first constructed and the manhole frame is cut to lift the whole manhole frame, and then the fixed foundation is constructed and the paving material is poured into the space. Even if there is a manhole frame on the pavement surface, the workability is remarkably improved since there is no need to construct the construction carefully, and the step noise is not formed, resulting in low construction noise and environment for local residents, pedestrians, traffic vehicles and construction workers in the construction zone. And safety can be secured and low pollution can be achieved.

In addition, since the fixed foundation of the present invention is a fixed foundation composed of a dual structure, that is, a combination of a thick crude adjustment material and a thin non-adjustment material that is relatively fine-adjustable, Compared with the point support, the height adjustment is more precise and the stability is achieved, and since the entire part is supported by the surface support, it maintains high flatness and greatly improves durability.

Claims (1)

In the overlay method of overlaying around the manhole frame, the release material 3 is coated on the surfaces of the manhole frame 1 and the cover 2 and the surface of the packaging layer 4 and the surface of the release material 3 are overlayed. A first process overlaid with the layer 5, a second process cut from the overlay layer 5 to a depth of the upper surface of the manhole base wall, and the overlay layer 5 is peeled off from the top of the lid 2, and the release material (3) and the known third step of removing the cutting packaging plate (7) and the manhole frame (1) after removing and opening the cover (2), the thickness adjustment on the manhole base wall (6) A fourth step of constructing a fixed foundation 9 composed of a combination of a fine adjustment material having a relatively fine thickness, and a fifth of the manhole frame 1 provided on the fixed foundation 9. Process and the usual packaging material 10 is poured into the space 30 around the manhole frame 1 to the height of the overlay layer 5. Overlay method, characterized in that a known comprising a sixth step.