JP6100733B2 - Method and apparatus for removing temporary lid in paving work including manhole - Google Patents

Description

The present invention is a removal process for removing a temporary lid embedded in a pavement layer in a pavement using a temporary lid such as a new pavement work including a manhole, a replacement pavement work, and a cutting overlay pavement work. The present invention relates to a method and an apparatus for carrying out the above.

Regarding the pavement construction of roads including manholes, the present applicant has proposed “post-installation method” (trademark registration No. 4217698) and has been well received.

According to the Applicant's “retrofitting method”, in the case of new paving work, a temporary lid installation step of closing the opening of a manhole installed on the road surface with a temporary lid with a center support hole, and above the temporary lid Including a pavement step for paving the road surface, a through hole forming step for forming a through hole from the pavement surface to the central support hole in the pavement layer on the temporary lid, and the pavement layer around the manhole by a cutting machine from the pavement surface. A cutting step for cutting the substrate into a circle, a removal step for removing the cut cutting pavement and the temporary lid by connecting a lift device to the center support hole through at least the through hole, and paving the lid receiving frame. A lid receiving frame installing step for installing in a manhole so as to coincide with the surface, and a filling step for filling the periphery of the lid receiving frame with a pavement repair material and integrating with the surrounding pavement are performed.

Also, in the case of replacement pavement work, an existing manhole cover receiving frame installed on the road and an existing object removal process for removing the pavement, and a temporary lid installation process for closing the manhole opening with a temporary cover with a central support hole, A paving step for paving the road surface including the upper part of the temporary lid, a through hole forming step for forming a through hole from the pavement surface to the central support hole in the pavement layer on the temporary lid, and a cutting machine from the pavement surface. A cutting step of cutting the pavement layer around the manhole into a circle, and removing the cut cut pavement and the temporary lid by connecting a lift device to the center support hole through at least the through hole A step, a lid receiving frame installing step for installing the lid receiving frame in the manhole so as to coincide with the pavement surface, and a filling step for filling the periphery of the lid receiving frame with a pavement repair material to be integrated with the surrounding pavement.

In the case of cutting overlay pavement construction, the existing object removal process that cuts the pavement around the existing manhole installed on the road and removes the lid receiving frame, and the temporary lid that closes the manhole opening with a temporary lid with a central support hole An installation step, a temporary pavement step where the upper portion of the temporary lid is temporarily paved to the same level as the existing pavement, a cutting step of cutting the surface layer of the existing pavement and the surface of the temporary pavement with a cutting machine, and the cutting An overlay process for paving an overlay on the surface, a through hole forming process for forming a through hole from the paved surface to the central support hole in the paved layer on the temporary lid, and the manipulator around the manhole by a cutting machine from the paved surface. A cutting step for cutting the pavement layer into a circle; a removal step for removing the cut cut pavement and the temporary lid by connecting a lift device to the center support hole through at least the through hole; and a lid receiving frame. A lid receiving frame installation step of installing the manhole to match the pavement surface, the filling process of integrating the pavement surrounding filled with surrounding paving repair material of the lid receiving frame is performed.

Japanese Patent No. 2623491 Japanese Patent No. 2623492

The “retrofitting method” proposed by the present applicant is that the manhole opening is closed with a temporary lid with a central support hole, and after pavement including the upper part of the temporary lid, the cutting surface is used to wrap around the manhole. A step of cutting the pavement layer into a circle and removing the temporary lid together with the cut pavement portion cut is performed.

The removal step can be carried out by using various lifting devices, but it is preferable that the temporary lid and the cut pavement are pulled up and removed at least by pulling up the temporary lid.

For this reason, as described above, a center support hole is provided in the temporary lid, and prior to removal, a through hole extending from the pavement surface to the central support hole is formed in the pavement layer on the temporary cover, and the through hole is formed. A lift device is connected to the center support hole through the lifter, and the cut pavement portion that has been circularly cut is removed by pulling up the temporary lid.

By the way, the said through-hole formation process generally uses a core drill, and drills this pavement layer toward the center support hole of the temporary cover embedded under the pavement layer from the surface of the pavement layer. Has been done.

Therefore, the worker is forced to perform work with time and labor in order to form the through hole, and there is a problem to be improved in terms of work efficiency.

Moreover, since the temporary lid is usually made of iron, there is a problem that the drill blade is damaged when the core drill that has entered from the surface of the pavement layer contacts the temporary lid. For this reason, drilling with a core drill toward a temporary lid that cannot be seen from the surface of the pavement layer requires skilled skills, and there is also a problem to be improved in this respect.

For example, the above-described cutting overlay pavement work will be described with reference to the drawings. As shown in FIG. 8A, the road before the pavement work has a cylindrical manhole 2 embedded in the roadbed 1, and the manhole 2 A lid receiving frame 4 is installed on the support means 3 on the upper side, and an opening / closing lid 5 is mounted on the lid receiving frame 4. The roadbed 1 is provided with an existing pavement 6, and the support means 3 and the lid receiving frame 4 are embedded in the pavement 6. Although not shown, the pavement 6 is usually formed of a plurality of layers such as a base layer and a surface layer.

First, the pavement 6 around the manhole 2 is cut from the road surface, and the cut pavement portion and the cover receiving frame 4 are removed (existing object removing step). As shown in FIG. 7 is formed.

Next, as shown in FIG. 8C, the opening of the manhole 2 is closed with the temporary lid 8 (temporary lid installation step), and the upper portion of the temporary lid 8 is temporarily paved (temporary paving step). At this time, the temporary pavement 9 is filled in the concave portion 7 so as to be at the same level as the existing pavement 6. Thereafter, the surface layer of the existing pavement 6 and the surface of the temporary pavement 9 are cut by a cutting machine corresponding to a predetermined thickness T (cutting process), and the overlay 10 is paved on the cutting surface (overlay process). . In this state, the road can be temporarily opened for traffic.

In order to restore the manhole, the temporary lid 8 is provided with a center support hole 8a. Therefore, as shown in FIG. 8D, the core drill 11 forms a through hole 12 from the pavement surface to the central support hole 8a in the pavement layer (temporary pavement 9) on the temporary lid 3 (through). Hole formation step).

Thereafter, as shown in FIG. 8 (E), the pavement layer around the manhole is cut into a circular shape from the pavement surface with a cutting machine (cutting process), and the cut pavement portion and the temporary lid 8 cut are removed (removal). Process). For removal, various devices can be used, but a lift device (in the example shown, lift-up bar 13) is connected to the center support hole 8a through at least the through hole 12. The temporary lid 8 is pulled up.

Finally, as shown in FIG. 8 (F), the lid receiving frame 4 is installed on the manhole 2 so as to coincide with the pavement surface via the support means 14 whose height can be adjusted (lid receiving frame installation process). By filling the pavement repair material 15 around the lid receiving frame 4, the pavement repair material 15 is integrated with the surrounding pavement (filling process). By installing the opening / closing lid 5 on the lid receiving frame 4, the construction is completed and the traffic is released. There are various specific configurations of the support means 14 in addition to the illustrated examples.

As described above, the through hole 12 that allows the temporary lid 8 to be removed is formed by using the core drill 11 so that the central support hole 8a of the temporary lid 8 embedded in the lower side of the pavement layer from the surface of the pavement layer. The pavement layer is formed by drilling toward the surface. At this time, since the temporary lid 8 is made of iron, there is a problem that the drill blade is damaged when the core drill 11 comes into contact with the temporary lid 8. For this reason, skills skilled in work are required. Further, the work of drilling a thick pavement layer made of asphalt or the like with the hand-held electric core drill 11 involves labor and has a problem in terms of working conditions.

It is an object of the present invention to provide a method and an apparatus that do not require the use of a core drill and can easily and easily form a through hole with a hand-held jig or the like for removing the temporary lid. .

Therefore, when the method of the present invention is configured as a means, in the new pavement construction, replacement pavement construction, cutting overlay pavement construction as described above, the temporary lid installation step is formed by the pavement step or the temporary pavement step. Including a through hole preparation step of standing a columnar body having a height reaching the vicinity of the surface of the paving or temporary paving on the center support hole of the temporary lid, wherein the through hole forming step includes the paving step or the temporary paving. It is in the point which forms a through-hole by collapsing or pulling out the columnar body of the state embedded in the said pavement layer by the process from the pavement surface.

In the embodiment related to the cutting overlay pavement construction, the columnar body is formed of a material that can be cut by the cutting machine, and when standing on the temporary lid, the upper end of the columnar body is formed in the temporary paving step. It is installed in a state separated from the surface of the pavement by a depth D.

And the place which the apparatus of this invention comprised as a 1st means is an apparatus used for the removal method of the temporary cover in the said pavement construction, The said columnar body surrounds a center support hole on a temporary cover. The cylinder has a heat-resistant and pressure-resistant shape that is erected, and a collapsible filler that is filled in the cylinder, and the cylinder is formed by collapsing the pavement surface in the through hole forming step. The upper end of the body is exposed and the through hole is formed through the internal space of the cylinder by scraping the filler from the upper end opening of the cylinder.

At this time, it is preferable that the cylindrical body is made of a paper tube and the filler is made of a foamed resin.

Further, the apparatus of the present invention is configured as a second means for use in a method for removing the temporary lid in the paving work, and the columnar body surrounds a central support hole on the temporary lid. It consists of a cylindrical body having heat-resistant shape and pressure-resistant shape that is erected and a removable cap member that closes the upper opening of the cylindrical body, and in the through hole forming step, by collapsing the pavement surface The cap is exposed, and the cap is removed to form the through hole through the internal space of the cylinder.

Furthermore, the apparatus of the present invention is configured as a third means, which is an apparatus used for a method for removing a temporary lid in the paving work, and the columnar body has a heat-resistant shape retention property and a pressure-resistant shape retention property. It comprises a cylindrical member, and in the through hole forming step, the upper end of the cylindrical member is exposed by collapsing the pavement surface, and the through hole is formed by pulling out the cylindrical member. In the point.

According to the present invention, since the columnar body 24 is erected on the central support hole 23a of the temporary lid 23 in advance in the temporary lid installation process, the pavement 25 (new paving work and In the case of sublimation work) or in the case of temporary pavement 35 formed by a temporary pavement process (in the case of cutting overlay pavement work), the columnar body 24 reaches the center support hole 23a from the surface layer of the pavement 25 or temporary pavement 35. Will be buried.

Therefore, in the through hole forming step, it is not necessary to use a core drill as in the prior art, and the upper end portion of the columnar body 24 is formed by collapsing the pavement surface of the pavement 25 or the temporary pavement 35 with a simple jig. By exposing and collapsing or pulling out the columnar body 24 from the pavement surface, there is an excellent effect that the through hole 26 can be easily formed.

It is sectional drawing which shows one Embodiment of this invention method implemented to new paving construction in order of a process. It is sectional drawing which shows one Embodiment of the method of this invention implemented in the replacement | paving pavement work order. It is sectional drawing which shows one Embodiment of the method of this invention implemented to cutting overlay pavement work order. 1 shows a first embodiment of the device of the present invention, (A) is a perspective view of a columnar body, (B) is a cross-sectional view showing a temporary lid installation process, (C) is a cross-sectional view showing a paving process, (D) These are sectional drawings which show a through-hole formation process. The 2nd Embodiment of this invention apparatus is shown, (A) is a perspective view of a columnar body, (B) is sectional drawing which shows a temporary lid installation process, (C) is sectional drawing which shows a paving process, (D) These are sectional drawings which show a through-hole formation process. 3A and 3B show a third embodiment of the device of the present invention, in which (A) is a perspective view of a columnar body, (B) is a sectional view showing a temporary lid installation step, (C) is a sectional view showing a pavement step, and (D). These are sectional drawings which show a through-hole formation process. 4 shows a fourth embodiment of the device of the present invention, (A) is a perspective view of a columnar body, (B) is a sectional view showing a temporary lid installation step, (C) is a sectional view showing a paving step, (D). These are sectional drawings which show a through-hole formation process. It is sectional drawing which shows the cutting overlay pavement construction regarding a prior art in order of a process.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

<New paving work>
FIG. 1 shows a new pavement construction in which the method of the present invention is implemented by using the device of the present invention in the order of steps.

(Before paving work)
As shown in FIG. 1A, a road before pavement has a tubular manhole 22 embedded in a roadbed 21 and an upper portion of the manhole 22 is opened.

(Temporary lid installation process)
As shown in FIG. 1B, the opening of the manhole 22 is closed by a temporary lid 23 made of metal or other metal (temporary lid installation step). The temporary lid 23 is provided with a central support hole 23a used for later removal.

(Through hole preparation process)
In the temporary lid installation step, the columnar body 24 having a height reaching the vicinity of the surface of the pavement 25 (see FIG. 1C) formed in the pavement step, which will be described later, is formed in order to form a through hole later. 23, a through hole preparation step of standing on the center support hole 23a. A specific configuration of the columnar body 24 will be described later.

(Pavement process)
As shown in FIG. 1C, a road surface is paved on the roadbed 21 including the upper portion of the temporary lid 23 (paving step). The pavement 25 stratified by asphalt or the like is usually formed by a plurality of layers such as a base layer and a surface layer, and the columnar body 24 is embedded together with the temporary lid 23. In this state, the paved road can be temporarily opened to traffic, and the columnar body 24 is preferably embedded so as not to protrude from the paved surface.

(Through hole formation process)
As shown in FIG. 1 (D), in order to remove the temporary lid 23, a through hole 26 extending from the pavement surface to the center support hole 23a of the temporary lid 23 is formed (through hole forming step). The through hole 26 is easily and easily formed by collapsing or extracting the columnar body 24 embedded in the pavement 25 from the pavement surface. Therefore, a core drill is not used.

(Cutting process and removal process)
The pavement layer 25 around the manhole is cut into a circular shape from the pavement surface with a cutting machine (cutting step), and then lifted to the center support hole 23a through at least the through hole 26 as shown in FIG. By connecting the device 27, the cut pavement portion P and the temporary lid 23 that have been cut are removed (removal step). Although various devices can be used for removal, a lift device 27 (a lift-up bar in the illustrated example) is connected to the center support hole 23a through at least the through hole 26, and the temporary lid 23 is connected. It is done by pulling up.

(Cover receiving frame installation process and filling process)
Finally, as shown in FIG. 1 (F), the lid receiving frame 29 is installed on the manhole 2 through the support means 28 capable of adjusting the height so as to coincide with the pavement surface (lid receiving frame installation step). A pavement repair material 30 is filled around the lid receiving frame 29 and integrated with the surrounding pavement (filling process). By installing an open / close lid 31 on the lid receiving frame 29, the construction is completed and traffic is released. Since the configuration of the support means 14 is not the object of the present invention, details are omitted in the drawings, but it should be understood that various configurations can be adopted.

<Conversion pavement construction>
FIG. 2 shows the replacement pavement work in which the method of the present invention is implemented by using the device of the present invention in the order of steps.

(Before paving work)
As shown in FIG. 2 (A), the road before the paving work has a tubular manhole 22 embedded in the roadbed 21, and a lid receiving frame 29 is installed on the manhole 22 via a support means 32. An opening / closing lid 31 is mounted on the lid receiving frame 29. The roadbed 21 is provided with an existing pavement 33, and the support means 32 and the lid receiving frame 29 are embedded in the pavement 33.

(Existing material removal process)
For the replacement pavement, the existing pavement 33 is removed so that the roadbed 21 is exposed, leaving the manhole 22, and the cover receiving frame 29 including the support means 32 is removed (existing matter removal step).

(Temporary lid installation process)
As shown in FIG. 2B, the opening of the manhole 22 is closed by a temporary lid 23 made of iron or other metal (temporary lid installation step). The temporary lid 23 is provided with a central support hole 23a used for later removal.

(Through hole preparation process)
In the temporary lid installation step, the columnar body 24 having a height reaching the vicinity of the surface of the pavement 25 (see FIG. 2C) formed in the pavement step, which will be described later, is formed in order to form a through hole later. 23, a through hole preparation step of standing on the center support hole 23a. A specific configuration of the columnar body 24 will be described later.

(Pavement process)
As shown in FIG. 2C, a road surface is paved on the roadbed 21 including the upper portion of the temporary lid 23 (paving step). The pavement 25 stratified by asphalt or the like is usually formed by a plurality of layers such as a base layer and a surface layer, and the columnar body 24 is embedded together with the temporary lid 23. In this state, the paved road can be temporarily opened, and the columnar body 24 is preferably embedded so as not to protrude from the paved surface.

(Through hole formation process)
As shown in FIG. 2 (D), in order to remove the temporary lid 23, a through hole 26 extending from the pavement surface to the center support hole 23a of the temporary lid 23 is formed (through hole forming step). The through hole 26 is easily and easily formed by collapsing or extracting the columnar body 24 embedded in the pavement 25 from the pavement surface. Therefore, a core drill is not used.

(Cutting process and removal process)
The pavement layer 25 around the manhole is circularly cut from the pavement surface with a cutting machine (cutting step), and then lifted to the center support hole 23a through at least the through hole 26 as shown in FIG. By connecting the device 27, the cut pavement portion P and the temporary lid 23 that have been cut are removed (removal step). Although various devices can be used for removal, a lift device 27 (a lift-up bar in the illustrated example) is connected to the center support hole 23a through at least the through hole 26, and the temporary lid 23 is connected. It is done by pulling up.

(Cover receiving frame installation process and filling process)
Finally, as shown in FIG. 2 (F), the lid receiving frame 29 is installed on the manhole 22 through the support means 28 capable of adjusting the height so as to coincide with the pavement surface (lid receiving frame installing step). The pavement repair material 30 is filled around the lid receiving frame 29 and integrated with the surrounding pavement (filling process). By installing the opening / closing lid 31 on the lid receiving frame 29, the construction is completed and traffic is released. The lid receiving frame 29 and the opening / closing lid 31 are preferably reused after the existing one shown in FIG. 2A is removed, but new ones may be used. Since the configuration of the support means 14 is not the object of the present invention, details are omitted in the drawings, but it should be understood that various configurations can be adopted.

<Cutting overlay pavement>
FIG. 3 shows the cutting overlay pavement construction in which the method of the present invention is implemented by using the device of the present invention in the order of steps.

(Before paving work)
As shown in FIG. 3 (A), the road before the paving work has a cylindrical manhole 22 embedded in the roadbed 21, and a lid receiving frame 29 is installed on the manhole 22 via a support means 32. An opening / closing lid 31 is mounted on the lid receiving frame 29. The roadbed 21 is provided with an existing pavement 33, and the support means 32 and the lid receiving frame 29 are embedded in the pavement 33.

(Existing material removal process)
The pavement 33 around the manhole 22 is cut from the road surface, and the lid receiving frame 29 is removed including the cut pavement portion and the support means 32 (existing material removing step). Therefore, a recess 34 as shown in FIG. 3B is formed above the manhole 22.

(Temporary lid installation process)
As shown in FIG. 3B, the opening of the manhole 22 is closed by a temporary lid 23 made of metal or other metal (temporary lid installation step). The temporary lid 23 is provided with a central support hole 23a used for later removal.

(Through hole preparation process)
In the temporary lid installation step, the columnar body 24 having a height that reaches the vicinity of the surface of the temporary pavement 35 (see FIG. 3C) formed in the temporary pavement step described later is formed in order to form a through hole later. It includes a through hole preparation step of standing on the center support hole 23a of the temporary lid 23. A specific configuration of the columnar body 24 will be described later.

(Temporary paving process)
As shown in FIG. 3C, the upper side of the temporary lid 23 is temporarily paved (temporary paving process). The temporary pavement 35 is filled in the concave portion 34 so as to be at the same level as the existing pavement 33. At that time, the columnar body 24 is preferably embedded so as not to protrude from the surface of the temporary pavement 35.

(Cutting process and overlay process)
Thereafter, the surface layer of the existing pavement 33 and the surface of the temporary pavement 35 are cut by a cutting machine corresponding to a predetermined thickness T (cutting process), and the overlay 36 is paved on the cutting surface (overlay process). . Therefore, the road can be temporarily opened for traffic. The predetermined thickness T of the cutting is usually about 50 mm, and the surface of the overlay 36 paved thereon is set to be slightly higher than the existing GL (ground level) or the same height. There are three modes: slightly lowered.

(Through hole formation process)
As shown in FIG. 3D, in order to remove the temporary lid 23, a through hole 26 is formed from the pavement surface to the central support hole 23a of the temporary lid 23 (through hole forming step). The through-hole 26 is easily and easily formed by collapsing or pulling out the columnar body 24 embedded in the temporary pavement 35 and the overlay 36 from the pavement surface. Therefore, a core drill is not used.

(Cutting process and removal process)
The pavement layer around the manhole is cut into a circular shape from the pavement surface with a cutting machine (cutting step), and then, as shown in FIG. By connecting 27, the cut pavement part P and the temporary lid 23 that have been cut are removed (removal step). Although various devices can be used for removal, a lift device 27 (a lift-up bar in the illustrated example) is connected to the center support hole 23a through at least the through hole 26, and the temporary lid 23 is connected. It is done by pulling up.

(Cover receiving frame installation process and filling process)
Finally, as shown in FIG. 3 (F), the lid receiving frame 29 is installed on the manhole 22 through the support means 28 capable of adjusting the height so as to coincide with the pavement surface (lid receiving frame installing step). The pavement repair material 30 is filled around the lid receiving frame 29 and integrated with the surrounding pavement (filling process). By installing the opening / closing lid 31 on the lid receiving frame 29, the construction is completed and traffic is released. The lid receiving frame 29 and the opening / closing lid 31 are preferably reused after the existing one shown in FIG. 3A is removed, but new ones may be used. Since the configuration of the support means 14 is not the object of the present invention, details are omitted in the drawings, but it should be understood that various configurations can be adopted.

<Embodiment of Apparatus>
Hereinafter, regarding the embodiment of the columnar body 24, the first embodiment shown in FIG. 4, the second embodiment shown in FIG. 5, the third embodiment shown in FIG. 6, and the fourth embodiment shown in FIG. Each will be explained.

4 to 7 exemplify the cutting overlay work for each embodiment of the columnar body 24, the columnar body 24 can be similarly used for a new paving work and a replacement paving work. I want you to understand.

<First Embodiment>
In the first embodiment shown in FIG. 4, the columnar body 24 is composed of a cylindrical body 37 having heat-resistant shape retention, pressure-resistant shape retention, and ease of cutting, and a collapsible filler 38 filled in the cylindrical body 37. It is configured.

In this case, the above-mentioned “heat-resistant shape retention” means that when the temporary pavement 35 and the overlay 36 (pavement 25 in the case of new pavement work and replacement pavement work) are carried out with a high-temperature asphalt mixture, for example, PVC This means that it is not easily heat-deformed like a tube or the like, and it means the characteristics of a material that can withstand heat and maintain its shape retention.

In addition, the above-mentioned “pressure-retaining shape” means that buckling deformation easily occurs when rolling is performed on the temporary pavement 35 and the overlay 36 (pavement 25 in the case of new pavement work and replacement pavement work). This means that the material has characteristics that can withstand pressure and maintain shape retention.

The “cutability” means that when the surface of the temporary pavement 35 is cut by the cutting machine, even if the upper end of the cylinder 37 is in contact with the cutting blade of the cutting machine, the cutting machine uses the cylinder. This means that the body 37 is not pulled out from the embedded state, and means the characteristics of the material cut by the cutting machine while maintaining the embedded state.

Furthermore, the above-mentioned “collapseable” means the property of a material that can be easily collapsed and scraped off by a metal jig (for example, the tip of a bar).

In order to meet the above-mentioned conditions of heat-resistant shape retention, pressure-resistant shape retention, and ease of cutting, the cylindrical body 37 is formed of a paper tube 37a.

Therefore, as shown in FIG. 4 (A), a cylindrical body 37 having a predetermined length L is formed by cutting the paper tube 37a. At this time, as shown in FIG. 4B, the predetermined length L is such that when the cylindrical body 37 is erected on the temporary lid 23, the upper end of the cylindrical body 37 has a predetermined depth than the surface of the pavement 25. It is set to be a length located at the portion of the length D.

As shown in FIG. 4B, in the temporary lid installation step, the cylindrical body 37 made of the paper tube 37 a is erected so as to surround the central support hole 23 a of the temporary lid 23 and can be collapsed inside the cylindrical body 37. By filling the filler 38, a through hole preparation step is performed.

The filler 38 is preferably composed of a foamed resin 38a. For example, it is possible to use a spray-type foamed urethane that is commercially available as a heat insulating material for buildings, and a polydiphenylmethane diisocyanate-based prepolymer is used as a main agent. In the case of a spray can, foaming is suitably performed while expanding by stirring with a thin rod while spraying water with a spray or the like before and after spraying and during spraying. Of course, the filling material 38 of the present invention is not limited to such a foamed resin 38a. In short, as described later, it is manually disintegrated by a jig or the like without using an electric tool or the like. Any material that can be scraped may be used.

Thereafter, as shown in FIG. 4C, a temporary pavement 35 is performed (temporary pavement process), and the surface layer of the existing pavement 33 and the surface of the temporary pavement 35 are cut corresponding to a predetermined thickness T by a cutting machine. (Cutting process).

At the time of temporary paving, the cylindrical body 37 has a heat-resistant shape retaining system and a pressure-resistant shape retaining property as described above, and thus preferably retains the tubular shape.

At the time of cutting, the predetermined depth D of the upper end of the cylindrical body 37 is preferably set to satisfy D> T as shown in the figure, whereby the cutting blade of the cutting machine is placed at the upper end of the cylindrical body 37. There is no contact. Moreover, even when the cutting blade comes into contact with the upper end of the cylindrical body 37, the cylindrical body 37 is cut by the cutting blade because it has the ease of cutting as described above. That is, the cylindrical body 37 is not pulled out of the embedded state by the cutting blade, and the embedded state is maintained.

Thereafter, after the overlay 36 is paved, a through hole forming step is performed as shown in FIG. When forming the through hole 26, the operator peels the pavement layer including the thin overlay 36 on the cylinder body 37 by using a hand-held jig (for example, bar), and peels the upper end of the cylinder body 37. After the exposure, the filler 38 inside the cylindrical body 37 may be scraped off while being collapsed.

Thereby, the through-hole 26 from the pavement surface to the center support hole 23a of the temporary lid 23 is formed by the hollow portion inside the cylindrical body 37 from which the filler 38 is scraped.

Second Embodiment
In the second embodiment shown in FIG. 5, the columnar body 24 is composed of a cylindrical body 37 having heat-resistant shape retention, pressure-resistant shape retention and cutting ease, and a collapsible filler 38 filled in the cylindrical body 37. The cylindrical body 37 is formed of a paper tube 37a, and the filler 38 is formed of a foamed resin. These points are the same as in the first embodiment.

As shown in FIG. 5A, the cylindrical body 37 of the second embodiment is configured to be fragile by forming a circumferential groove 39 at a predetermined interval in the axial direction. The circumferential groove 39 is continuously formed with a close interval.

Therefore, in the case of the second embodiment, there is an advantage that the cylindrical body 37 having a predetermined length L can be easily formed by simply folding and cutting the long paper tube 37a at the site.

Moreover, as shown in FIG. 5C, when the surface layer of the existing pavement 33 and the surface of the temporary pavement 35 are cut by a cutting machine, even if the cutting blade contacts the upper end of the cylindrical body 37, the cylinder Since the body 37 is not only cut by the ease of cutting as described above, but is easily broken by the circumferential groove 37, the broken piece 39p is separated following the contacting blade. There is an advantage that the embedded state is reliably maintained without being pulled out from the embedded state.

<Third Embodiment>
In the second embodiment shown in FIG. 6, the columnar body 24 closes a cylindrical body 37 having a predetermined length L having heat-resistant shape retaining property, pressure-resistant shape retaining property and ease of cutting, and an upper opening of the cylindrical body 37. The cap member 40 is configured to be collapsible.

The cylindrical body 37 is preferably formed by a paper tube 37a. Moreover, it is preferable to form the cap member 40 with the paper material which has heat-resistant shape retention property, pressure-resistant shape retention property, and cutting ease other than the ease of collapse.

Therefore, in the case of the third embodiment, when the through hole 26 is formed in the through hole forming step shown in FIG. 6D, the operator uses a hand-held jig (for example, bar) on the columnar body 24. After the pavement layer including the thin overlay 36 is broken and peeled to expose the upper end of the cylindrical body 37, the cap member 40 may be collapsed. In the case of the illustrated example, the cap member 40 is broken, but the cap member 40 may be removed from the cylindrical body 37. Therefore, the “removable” includes both destruction and removal.

As a result, a through hole 26 extending from the paved surface to the center support hole 23 a of the temporary lid 23 is formed by the hollow portion inside the cylindrical body 37.

<Fourth embodiment>
In the fourth embodiment shown in FIG. 7, the columnar body 24 is constituted by a cylindrical member 41 having a predetermined length L having heat-resistant shape retention, pressure-resistant shape retention, and ease of cutting.

For example, the cylindrical member 41 can be formed of, for example, rubber having a predetermined elastic hardness. According to this, the cylindrical member 41 can be provided with heat retaining shape, pressure retaining property, and ease of cutting. In this case, the fitting protrusion 41a can be integrally formed on the bottom.

Therefore, as shown in FIG. 7B, in the temporary lid installation step, the cylindrical member 41 is erected on the temporary lid 23 by inserting the fitting protrusion 41a into the center support hole 23a, thereby preparing a through hole. A process is performed.

Thereafter, as shown in FIG. 7C, a temporary pavement 35 is performed (temporary pavement process), and the surface layer of the existing pavement 33 and the surface of the temporary pavement 35 are cut corresponding to a predetermined thickness T by a cutting machine. (Cutting process).

When temporarily paving, the cylindrical member 41 has a heat-resistant shape retaining system and a pressure-resistant shape retaining property as described above, and thus preferably retains the cylindrical shape.

At the time of cutting, even if the cutting blade of the cutting machine comes into contact with the upper end of the cylindrical member 41, the cylindrical member 41 made of rubber or the like is cut by the cutting blade, so that the cylindrical member 41 is removed from the embedded state by the cutting blade. It will not be pulled out, and will remain buried.

Then, after the overlay 36 is paved, a through hole forming step is performed as shown in FIG. When forming the through hole 26, the operator peels the pavement layer including the thin overlay 36 on the column member 41 with a hand-held jig (for example, a bar) while breaking the pavement layer, and the upper end of the column member 41 is removed. After the exposure, the cylindrical member 41 may be pulled out from the pavement layer.

Thereby, the through-hole 26 from the pavement surface to the center support hole 23a of the temporary lid 23 is formed by the hollow portion from which the columnar member 41 is drawn.

21 Subbase 22 Manhole 23 Temporary Lid 23a Center Support Hole 24 Columnar Body 25 Pavement 26 Through Hole 27 Lifting Device 28 Supporting Means 29 Lid Support Frame 30 Pave Repair Material 31 Opening and Closing Lid 32 Existing Supporting Means 33 Existing Pavement 34 Recess 35 Temporary Pavement 36 Overlay 37 Cylindrical body 37a Paper tube 38 Filling material 39 Circumferential groove 39p Broken piece 40 Cap member 41 Column member 41a Fitting protrusion

Claims (8)

A temporary lid installation step of closing an opening of a manhole installed on a road surface with a temporary lid (23) with a center support hole;
A paving step of paving a road surface including the upper part of the temporary lid;
A through hole forming step for forming a through hole (26) from the pavement surface to the central support hole (23a) in the pavement layer on the temporary lid;
A cutting step of cutting the pavement layer around the manhole into a circular shape from the pavement surface with a cutting machine;
A removal step of removing the cut pavement section and the temporary lid (23) cut by connecting a lift device (27) to the center support hole (23a) through at least the through hole (26);
A lid receiving frame installation process for installing the lid receiving frame in the manhole so as to match the pavement surface;
In the new pavement construction consisting of a filling process in which a pavement repair material is filled around the lid receiving frame and integrated with the surrounding pavement,
In the temporary lid installation step, a columnar body (24) having a height reaching the vicinity of the surface of the pavement formed in the pavement step is erected on a central support hole (23a) of the temporary lid (23). Including a hole preparation process,
The through hole forming step forms the through hole (26) by collapsing or pulling out the columnar body (24) embedded in the pavement layer by the pavement step from the pavement surface. How to remove the temporary lid in paving work including An existing object removal process to remove the cover frame and pavement of the existing manhole installed on the road;
A temporary lid installation step of closing the manhole opening with a temporary lid (23) with a central support hole;
A paving step of paving a road surface including the upper part of the temporary lid;
A through hole forming step for forming a through hole (26) from the pavement surface to the central support hole (23a) in the pavement layer on the temporary lid;
A cutting step of cutting the pavement layer around the manhole into a circular shape from the pavement surface with a cutting machine;
A removal step of removing the cut pavement section and the temporary lid (23) cut by connecting a lift device (27) to the center support hole (23a) through at least the through hole (26);
A lid receiving frame installation process for installing the lid receiving frame in the manhole so as to match the pavement surface;
In replaceable pavement construction comprising a filling step of filling a pavement repair material around the lid receiving frame and integrating with the surrounding pavement,
In the temporary lid installation step, a columnar body (24) having a height reaching the vicinity of the surface of the pavement formed in the pavement step is erected on a central support hole (23a) of the temporary lid (23). Including a hole preparation process,
The through-hole forming step is a pavement construction including a manhole characterized in that a through-hole is formed by collapsing or extracting the columnar body (24) embedded in the pavement layer by the pavement step from the pavement surface. To remove the temporary lid. An existing object removal step of cutting the pavement around an existing manhole installed on the road to remove the lid receiving frame;
A temporary lid installation step of closing the manhole opening with a temporary lid (23) with a central support hole;
Temporary paving process of temporarily paving the upper side of the temporary lid to the same level as existing pavement;
A cutting process of cutting the surface of the existing pavement and the surface of the temporary pavement with a cutting machine;
An overlay process for paving an overlay on the cutting surface;
A through hole forming step for forming a through hole (26) from the pavement surface to the central support hole (23a) in the pavement layer on the temporary lid;
A cutting step of cutting the pavement layer around the manhole into a circular shape from the pavement surface with a cutting machine;
A removal step of removing the cut pavement section and the temporary lid (23) cut by connecting a lift device (27) to the center support hole (23a) through at least the through hole (26);
A lid receiving frame installation process for installing the lid receiving frame in the manhole so as to match the pavement surface;
In the cutting overlay pavement construction comprising a filling step of filling a pavement repair material around the lid receiving frame and integrating with the surrounding pavement,
In the temporary lid installation step, a columnar body (24) having a height reaching the vicinity of the surface of the temporary pavement formed in the temporary pavement step is erected on the central support hole (23a) of the temporary lid (23). Including a through hole preparation step,
The through-hole forming step forms a through-hole by collapsing or extracting the columnar body (24) embedded in the pavement layer by the temporary paving step and the overlay step from the pavement surface. How to remove the temporary lid in paving work including In the cutting overlay pavement construction according to claim 3,
The columnar body (24) is formed of a material that can be cut by the cutting machine, and when the columnar body (24) is erected on the temporary lid (23), an upper end of the columnar body (24) is formed in the temporary paving step. A method for removing a temporary lid in pavement work including manholes, characterized in that it is installed with a depth (D) away from the surface of the pavement (35). It is an apparatus used for the method of removing the temporary lid in the paving work according to claim 1, 2, 3, or 4.
The columnar body (24) includes a cylindrical body (37) having a heat-resistant shape and a pressure-resistant shape that is erected on the temporary lid (23) so as to surround the center support hole (23a), and the cylindrical body Consisting of collapsible filler (38) filled into
In the through hole forming step, the upper end of the cylindrical body (37) is exposed by collapsing the pavement surface, and the cylindrical body (38) is scraped off from the upper end opening of the cylindrical body ( 37) An apparatus for removing a temporary lid in a paving work including a manhole, wherein the through hole (26) is formed through an internal space of 37). The pavement including a manhole according to claim 5, wherein the cylindrical body (37) is constituted by a paper tube (37a), and the filler (38) is constituted by a foamed resin (38a). Temporary lid removal device for construction. It is an apparatus used for the method of removing the temporary lid in the paving work according to claim 1, 2, 3, or 4.
The columnar body (24) includes a cylindrical body (37) having a heat-resistant shape and a pressure-resistant shape that is erected on the temporary lid (23) so as to surround the center support hole (23a), and the cylindrical body Consisting of a removable cap member (40) that closes the upper opening of the
In the through hole forming step, the cap (40) is exposed by collapsing the pavement surface, and the cap (40) is removed to remove the cap through the internal space of the cylindrical body (37). (26) A temporary lid removing device in pavement work including a manhole, characterized by being configured to form. It is an apparatus used for the method of removing the temporary lid in the paving work according to claim 1, 2, 3, or 4.
The columnar body (24) is composed of a cylindrical member (41) having heat-resistant shape retention and pressure-resistant shape retention,
In the through hole forming step, the upper end portion of the cylindrical member (41) is exposed by collapsing the pavement surface, and the through hole (26) is formed by pulling out the cylindrical member (41). An apparatus for removing a temporary lid in a pavement work including a manhole, characterized by being configured.

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