JP2004068539A - Paving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure the confirmation of the position of a paved manhole before subsequent processes are performed. <P>SOLUTION: Distances are premeasured from the center of a manhole to three roadside reference points. The manhole opening is closed with a temporary cover 3 marked in the center, and the road including the temporary cover is paved uniformly. After the paving, a manhole center is determined from the reference points, and the pavement in the center is cut away by a core drill to expose the center of the temporary cover 3 so that the center is confirmed. A center fixing device 5 holed in the bottom is placed in the center, and the center is reconfirmed before a start of cutting. A shaft of a cylindrical cutter is set on the center fixing device to cut a circle around the manhole, and a manhole cover receiving frame is installed. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pavement method such as new pavement or replacement of an existing pavement on a road including a manhole.
[0002]
[Prior art]
For the pavement of the road where the manhole is installed, the cast iron manhole cover frame buried in the pavement breaks the continuity of the pavement work, so the construction efficiency is reduced, and the rolling machine such as a road roller rolls near the manhole. It could not be pressed, and had to be rolled with a hand-held rolling machine, resulting in insufficient rolling. In addition, since the manhole cover receiving frame is installed before the pavement is constructed, it is difficult to match the manhole cover receiving frame with the vertical gradient and the transverse gradient of the road, and a step may be generated.
Therefore, as shown in Japanese Patent No. 2623490 and the like, a construction method has been developed in which paving including a manhole portion is performed prior to installation of a manhole receiving frame, and then a manhole cover receiving frame is installed.
[0003]
In these construction methods, as shown in FIG. 6, the opening of the manhole is closed with a temporary cover 3 or the like, and the opening is continuously paved in the same manner as other road portions. The manhole cover 11 is removed so as to expose the upper part of the manhole sloping wall 11 according to the shape, and the manhole cover receiving frame 10 is installed so as to conform to the longitudinal gradient and the transverse gradient of the road surface. After completion of the pavement work, the manhole cover receiving frame 10 is installed according to the road surface, and the installation procedure of the manhole cover receiving frame is reversed from the conventional construction method. Therefore, the pavement can be continuously constructed as if the manhole does not exist on the road surface, and the efficiency of the construction can be improved, and the insufficient rolling pressure around the manhole can be solved.
[0004]
In this method, when removing the overlay pavement and the pavement on the upper part of the manhole of the newly-built pavement, the manhole is cut into a square by a breaker, a circular cutter is cut, or the hydraulic pressure is removed as disclosed in Japanese Utility Model Registration No. 3010469. The manhole cover receiving frame and the pavement are peeled off integrally by a jack, or the circumference of the manhole is circularly cut by a cylindrical cutting machine as disclosed in JP-B-61-25844 and JP-B-61-33838. can do.
Further, when the pavement is asphalt pavement, a method of softening and removing the asphalt pavement by heating has been proposed.
[0005]
[Problems to be solved by the invention]
In this method, since the pavement is uniformly paved on the manhole similarly to the surrounding area, the position of the manhole cannot be visually confirmed after the pavement is completed. In order to accurately determine the position of the manhole, the distances (L1, L2, L3) from the three base points (A to C) on the road side edge to the center of the manhole are measured in advance as shown in FIG. After completion of the pavement, the center position is determined based on the distance from the three base points and marked on the pavement surface, and the pavement of the manhole portion is removed by various means such as cutting, heating, or stripping to expose the manhole.
[0006]
To determine the center, theoretically accurate surveying from three points will not mistake the center of the manhole, but unpredictable accidents such as the movement of the base point will occur, and the manhole will be located in the center of the road. If the distance from the side of the road was too long, measurement errors could occur. Until the pavement was removed and checked, construction workers were worried that the center position would be wrong.
An object of the present invention is to confirm the center position of the manhole before entering the next step in order to eliminate such anxiety.
[0007]
[Means for Solving the Problems]
The temporary lid for closing the manhole opening or the pavement constructed on the manhole lid was removed to confirm the position of the manhole.
In addition, a mark indicating the center was provided on the temporary lid or the manhole cover for closing the manhole opening, and the pavement was constructed, and the pavement at the center position was removed so that the center position could be confirmed.
Since the confirmation of the center of the manhole has been performed, the installation process of the manhole cover receiving frame can be performed without anxiety, and there is no need to start over.
[0008]
【Example】
New pavement construction (paving replacement work)
As shown in FIG. 1A, when paving a road on which the manhole 1 is installed, a temporary lid 3 is installed at the opening of the manhole sloping wall 11 to close the manhole opening. The temporary lid 3 has a projection 31 for preventing slippage on the lower surface, and a hole 30 is provided at the center. This hole 30 is closed with a tape or the like to prevent the pavement material laid on the temporary lid 3 from falling into the manhole and to be a mark for confirming the center position of the temporary lid 3. In the case of a new pavement, since the manhole cover receiving frame is not installed at the upper end of the manhole slope 11, the base layer and the surface layer are paved on the entire pavement road surface including the temporary cover 3 by a normal method. Since the new pavement 4 constructed on the temporary lid 3 is to be removed when the manhole cover receiving frame 10 is installed, the temporary pavement material is temporarily attached to the surface of the temporary lid 3 so that the pavement material does not adhere to the surface. A release agent is applied to the upper surface of the lid 3 or a release paper is pasted on the lid 3 to facilitate cleaning and facilitate reuse of the temporary lid 3. Alternatively, a temporary lid made of a material having heat resistance and to which asphalt does not easily adhere is used, and after use, the asphalt adhered is removed by heating.
[0009]
As shown in FIG. 1B, when a new pavement is constructed, the temporary lid 3 is uniformly paved on the temporary cover 3 similarly to the other parts, so that the position of the manhole is covered with the pavement 4 and cannot be seen. As shown in, the distances from a plurality of base points (A, B, C) on the side of the road to the center of the manhole are measured and recorded. Draw the center position and the shape of the manhole opening as marks using chalk.
After the completion of the new pavement, the position of the center mark drawn on the pavement surface is cut off and removed from the pavement 4 to the temporary lid 3 with a φ100 mm core drill, and it is confirmed that the pavement 4 is at the center position of the manhole. If the center mark cannot be confirmed, there is a possibility that the center position has been deviated due to a survey error or the like.
[0010]
After confirming the center position, the center fixing device 5 of the cylindrical cutting machine having the hole 52 at the center of the substrate 51 shown in FIG. 5 is installed on the road surface from which the core has been removed. Therefore, the center of the manhole is reconfirmed through the hole 52 at the bottom of the center fixing device 5, and a center shaft indicated by a dotted line of a cylindrical cutting machine (not shown) is set in the center fixing device 5, and the periphery of the manhole is set. The pavement is cut into a circle and the pavement is removed as shown in FIG. 1 (c) to expose the manhole.
[0011]
As shown in FIG. 1 (d), an adjusting ring 12 made of concrete or synthetic resin for adjusting the height of the manhole cover receiving frame 10 is installed on the manhole sloping wall 11, and the manhole cover is finely adjusted with an adjusting mortar. The receiving frame 10 is installed in accordance with the vertical gradient and the cross gradient of the pavement surface.
[0012]
A pavement repair material 41 such as resin concrete is poured and filled around the manhole cover receiving frame 10 and is rolled by a rolling machine having an arc-shaped rolling plate so as to be integrated with the surrounding pavement 4. As needed, the pavement repair material 41 cast and filled is cured by heating.
In the pavement replacement work, the manhole cover receiving frame is removed by an appropriate method to remove the existing pavement, and the manhole opening is closed with a temporary cover. Subsequent procedures are the same as for new pavement construction.
[0013]
As shown in FIG. 2A, the cover of the manhole provided on the road is removed, the pavement around the manhole is cut, and the manhole cover receiving frame 10 is removed. In the case where the manhole cover receiving frame 10 is not fixed to the manhole inclined wall with bolts, the manhole cover receiving frame 10 is removed together with the surrounding pavement by a manhole cover receiving frame peeling device as shown in Utility Model Registration No. 3010469. Remove it.
The opening of the manhole is closed with a temporary lid 3 and crushed stone is thrown into it and temporarily paved to the same level as the existing pavement 40. The surface of the existing pavement 40 and the surface of the temporary pavement on the manhole are cut off.
[0014]
As shown in FIG. 2B, the overlay 43 is paved on the cut surface of the existing pavement 40. Since the manhole is covered with the overlay 43 and its position cannot be determined, the distances from the plurality of base points on the road side end to the center of the manhole are measured, and the mark of the position of the manhole is drawn on the surface of the overlay 43 after overlay paving is completed. Keep it. Here, it is possible to open the traffic once.
[0015]
As shown in FIGS. 2 (b) and 2 (c), similarly to the new pavement construction work, the center of the manhole is confirmed by removing the pavement at the mark position using a core drill, and the pavement around the manhole is removed. An adjusting ring 12 for adjusting the height of the manhole cover receiving frame is installed on the manhole sloping wall 11 and further finely adjusted with an adjusting mortar so that the manhole cover receiving frame 10 is at the same level as the surface of the overlay 43.
[0016]
As shown in FIG. 2 (d), a repair material 41 such as resin concrete is poured and filled around the manhole cover receiving frame 10 and is rolled by a rolling machine having an arc-shaped rolling plate so as to be integrated with the surrounding pavement. To
[0017]
As shown in FIG. 3 (a), a release agent is applied to the surface of the manhole cover 2 so that the asphalt pavement material does not adhere thereto, or a circular release sheet is attached, and the manhole is placed on the existing pavement 40. The overlay 43 including the lid 2 is paved. Since the manhole is covered by the overlay 43, a mark is drawn on the surface of the overlay 43 with paint or the like so that the position can be recognized. Since the overlay 43 is completed including the upper surface of the manhole, the traffic can be opened at this point.
[0018]
As shown in FIG. 3 (b), the overlay 43 on the manhole cover 2 is removed with a breaker or the like, the position of the manhole is confirmed, the pavement around the manhole is cut and removed, and the manhole cover receiving frame 10 is removed.
As shown in FIG. 3 (c), a concrete adjustment ring 12 for adjusting the height of the manhole cover receiving frame 10 is installed on the manhole sloping wall 11, and the height is finely adjusted with an adjusting mortar to make the manhole cover receiving frame fine. 10 is at the same level as the surface of the overlay 43.
As shown in FIG. 3 (d), a repair material 41 such as resin concrete is cast around the manhole cover receiving frame 10, and is rolled by a rolling machine having an arc-shaped rolling plate to be integrated with the surrounding pavement.
[0019]
【The invention's effect】
According to the pavement method of the present invention, since the center position of the manhole covered with the pavement is visually confirmed, the pavement can be removed for the manhole cover receiving frame installation work with ease.
In addition, by using the perforated center fixing device, the center position can be reconfirmed immediately before cutting, and the pavement at the manhole position can be reliably removed.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a process of a new pavement construction work.
FIG. 2 is a process explanatory view of a cutting overlay work.
FIG. 3 is an explanatory view of a process of an overlay construction.
FIG. 4 is an explanatory diagram of how to find the center of a manhole.
FIG. 5 is a perspective view of a center fixing device having a hole.
FIG. 6 is an explanatory view of a conventional pavement method process.
[Explanation of symbols]
Reference Signs List 10 Manhole cover receiving frame 11 Bevel wall 12 Adjustment ring 2 Manhole cover 3 Temporary cover 4 Pavement 40 Existing pavement 43 Overlay 5 Center fixing device

Claims (7)

On the pavement of the road where the manhole exists, close the manhole opening with the temporary lid and paving including the manhole part, remove the pavement on the temporary lid, confirm the position of the temporary lid, and install the manhole cover receiving frame. Paving method to be performed. For cutting overlay pavement on the road where manholes exist, remove the existing manhole cover frame, close the manhole opening with temporary lid, fill the manhole part with pavement material, cut the existing pavement and overlay paving, temporary lid A pavement method that removes the upper pavement, checks the position of the temporary lid, and installs the manhole cover receiving frame. A pavement method for overlaying pavement on the road where manholes exist, including overlaying the manhole cover, removing the pavement above the cover, checking the position of the cover, and installing the manhole cover receiving frame. On the replacement pavement of the road where the manhole exists, remove the existing manhole cover frame, close the manhole opening with the temporary cover, pave it including the manhole part, remove the pavement on the temporary cover, and remove the temporary cover. A pavement method that checks the position and installs the manhole cover frame. The pavement method according to claim 1, wherein the pavement at the center of the temporary lid is removed and the center position of the temporary lid is confirmed. The pavement method according to claim 5, wherein a mark is provided at a center position of the temporary lid. A center fixing device for a cylindrical cutting machine having a center shaft having a substrate and a shaft receiving portion, wherein a hole is provided in the center of the substrate.

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