KR960004916B1 - Overlay method for height adjustable manhole - Google Patents

Abstract

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Description

Cutting overlay method

1 to 6 are cross-sectional views illustrating the process sequence of the cutting overlay method according to an embodiment of the present invention.

1 is a state after removal of the cutting packaging plate and the manhole frame.

2 is a state after pouring the packaging material around the support cover.

3 is a state after performing a cutting overlay.

4 is a state after removing the cutting packaging plate and the support cover.

5 is the state after installing the manhole frame.

Figure 6 shows the state after pouring the packaging material around the manhole frame, respectively.

* Explanation of symbols for main parts of the drawings

1: manhole frame 2: pavement layer

3: manhole foundation wall 4: cutting packaging plate

6: support cover 7: packing material

8: cutting surface 9: overlay layer

10: cutting packaging layer 11: fixed foundation

12: packaging material 13: lid

14: space part

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting overlay process, and more particularly to a cutting overlay process in packaging containing manhole frames.

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, when the pavement surface has many cracks or breakages or when the pavement thickness is insufficient due to traffic, cutting and overlay of a predetermined thickness are applied to the pavement surface.

However, in the conventional cutting overlay method, the manhole frame often protrudes partially or entirely from the surface of the pavement at the location where the manhole frame is placed in the pavement. It was easy to cause plate damage on both sides, and it was necessary to construct a cutting envelope while bypassing a manhole frame, and there existed a problem of the workability of a cutting overlay falling remarkably.

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 a cutting overlay method.

The object of the present invention is to provide a cutting overlay method that can be used to construct a cutting overlay on the pavement surface including the manhole frame unlike the prior art.

The cutting overlay method of the present invention for achieving the above object is a process in which the pavement around the manhole frame is cut into a cylindrical shape and at the same time the cutting packaging plate and the manhole frame is removed, and the fixing foundation of the manhole frame on the manhole base wall The construction of the manhole frame on the fixed base and the step of placing the packaging material in the space around the manhole frame, and through the opening of the manhole frame, a known manhole frame peeler passes through the cutting packaging plate and In the overlay pavement method including the process of removing the manhole frame, a process of installing a support cover on the base wall of the manhole and placing a packaging material on the space around the support cover and cutting the pavement surface at the same time The overlay layer is formed on the surface, and the pavement around the installation area of the manhole frame is cut into a tubular shape from above the overlay layer. At the same time, the cutting packaging plate and the support cover is to be removed.

Therefore, the cutting overlay method of the present invention made of the above process, because the overlay on the pavement surface including the manhole frame without the manhole frame, there is an effect capable of constructing the cutting overlay with good workability.

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

1 to 6 are cross-sectional views showing the process of the cutting overlay method according to the present invention.

In FIG. 1, the pavement layer 2 around the manhole frame 1 is cut cylindrically to the depth of the upper surface of the manhole base wall 3 by a known road circular cutter (not shown).

The cutting packaging plate 4 and the manhole frame 1 are demolished upwards by the known manhole peeling machine 5.

In FIG. 2, a circular iron plate (not shown) is formed on the manhole base wall 3 and a cylindrical support cover 6 protruding from the lower surface thereof, and at the same time, the packaging material 7 is provided in the space around the support cover 6. ) Is poured to the height of the paving layer 2 already installed in a predetermined configuration.

In order to facilitate reuse of the support cover 6, a peeling material other than a no ring may be previously printed on the surface of the support cover 6.

3, the surface of the pavement layer 2 is cut to a predetermined thickness and an overlay layer 9 of a predetermined thickness is formed on the cutting surface 8, while the overlay layer in asphalt mixing with the pavement layer 2 of cement component ( 9) In order to bond, it is constructed by inserting a tack coat (not shown) which scatters a small amount of bitumen material on the surface of the lower layer.

In FIG. 4, the pavement layer 2 around the part to be installed in the manhole frame 1 is cut from the overlay layer 9 to the depth of the upper surface of the manhole base wall 3 in a cylindrical shape by the road circular cutter. At the same time, the cutting packaging plate 10 and the support cover 6 are dismantled integrally or sequentially through an anchor bolt or the like, and the cutting packaging plate 10 is broken by a breaker or the like as necessary.

Next, in FIG. 5, the coarse adjustment material which consists of precast concrete, for example, which can be largely adjusted on the manhole base wall 3, and a comparatively fine adjustment, for example A fixed base 11 composed of a combination of a thin thickness microadjustment material composed of epoxy resin concrete, which is a kind of thermosetting resin, is constructed at a predetermined height. The manhole frame 1 is installed on the fixing base 11.

6, the preliminary process is completed by placing the packaging material 12 up to the height of the overlay layer 9 in the space around the manhole frame 1.

In the process of FIG. 1, the conventional packaging method for cutting the pavement around the manhole frame 1 into a quadrangle, or disclosed in Japanese Unexamined Patent Application No. 61-25844 or 61-33938. As described above, according to the shearing process in the improved packaging method for cutting the package around the manhole frame into a circular shape, the cylindrical shape of the package around the manhole frame and the cutting packaging plate and the manhole frame Removal is done.

In the process of FIG. 2, the space around the support cover 6 opened by the removal of the cutting packaging plate 10 and the manhole frame 1 is filled with the packaging material 7, and is temporarily recovered and supported. The lid 6 closes the manhole base wall 3 and simultaneously supports the recovery packaging material.

In the process of FIG. 3, the pavement surface is cut off without a manhole frame, and then the overlay layer 9 is constructed on the cutting surface.

In the process of FIG. 4, the packaging around the predetermined installation range of the manhole frame 1 is cut into a cylindrical shape from the overlay layer 9 by the same means as the process of FIG. The support cover 6 is removed.

Finally, in the fifth and sixth steps, the fixing foundation of the manhole frame on the manhole base wall 3 is followed by the step of the rear end in the packaging method around the manhole frame 1. 11), the installation of the manhole frame 1 on the fixing base 11, and the placing of the packaging material 12 in the space around the manhole frame are completed. In Fig. 6, reference numeral 13 denotes a manhole cover and 14 denotes a space part.

During the process, as the manhole frame 1 to be installed, one which has already been removed may be used, but a separate one that has been pre-treated in advance so that it can be used immediately is used.

The area around the manhole frame 1 is a cylindrical bit as disclosed in, for example, Japanese Unexamined Patent Application Publication No. 61-52283 when cutting into a cylindrical shape at the time of cutting the pavement around the installation area around the manhole frame. A road surface circular cutter having a shape may be suitably used, and in order to specify a cutting center from the overlay layer 9, a known metal detector or the like may be used to explore the position of the support cover 6 therein.

Although the cutting packaging board 4 around the manhole frame may be removed by crushing using a breaker, it is disclosed in Japanese Unexamined Patent Application Publication No. 61-33938 from the standpoint of improving workability and preventing noise and vibration. Similarly, it is preferable that it is demolished while attached to the manhole frame 1.

In order to integrally remove the cutting packaging plate 4 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, If necessary, a manhole lifter or a manhole frame peeler for inserting a radially expanding wedge or an arm between the manhole frame 1 and the manhole base wall 3 can be used. Can be.

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

Cutting overlay method of the present invention can be systemized in a single process by serializing the process to the circular cutting, demolition, restoration, 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 cutting overlay method of this invention, the 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 occurs, but in the cutting overlay method of the present invention, the largest noise is generated during the process. In the cutting 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 time of road cutting of the cutting overlay method of the present invention was `` less than 74dB (A) of 7m four-way energy average on the machine side. ''

In addition, the cutting 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 does not require temporary repair or temporary suspension due to the manhole construction required by the conventional method, and enables construction by confirming the manhole position with a detector after the entire paving is completed.

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 safety can be secured and low pollution can be achieved.

As described above, since the overlay method according to the present invention performs the overlay without the manhole frame on the pavement surface including the manhole frame, there is an effect that the cutting overlay can be constructed with good workability.

Claims (1)

In the overlay method of overlaying the periphery of the manhole frame, a first known process in which the pavement layer 2 around the manhole frame 1 is cut to a depth of the upper surface of the manhole base wall 3 in a cylindrical shape, and a cutting packaging plate (4) and the second well-known process of dismantling the manhole frame (1) at once, and the support cover (6) is temporarily installed on the manhole base wall (3) and at the same time in the space around the support cover (6). A third step in which the packaging material 7 is poured up to the height of the installed packing layer 2, a fourth step in which the packaging surface is cut and a overlay layer 9 having a predetermined thickness is formed on the cutting surface 8; A fifth step in which the pavement around the area where the manhole frame 1 is to be installed is cut into a cylindrical shape from above the overlay layer 9 and the cutting packaging plate 10 and the support cover 6 are removed; On the wall 3, a fixed foundation 11 composed of a combination of coarse and fine adjustment materials is constructed at a predetermined height. And a sixth known process in which the manhole frame 1 is installed on the fixing base 11 and the packaging material 12 is poured into the space around the manhole frame 1. The cutting overlay method characterized by the above-mentioned.