JPH08120700A - Opening device for manhole or hand-hole and construction method for manhole or hand-hole in paving surface making use thereof - Google Patents

Abstract

PURPOSE: To make it possible to apply sufficient pressure to asphalt in the peripheral part of an opening device when a manhole or a hand-hole is constructed on a paving surface, prevent the occurrence of hollows or uneven steps in a road in the vicinity of the opening device, prevent water-leakage and, at the same time, to enable cars, etc., to move safely. CONSTITUTION: A sill member 1 is mounted on an opening section of a concrete riser 5. A temporary cover member is mounted to a receiver 12 of the sill member 1 with bolts. Granular crushed stone 6 is spread all over to cast asphalt 7. The surface of the asphalt is solidified with a roller and is finished in specific height. A temporary hole 71 is bored in the asphalt 7, the sill member 1 and temporary cover member are exposed, and the temporary cover member is removed. Bolts 41 are screwed in screw holes 13 of the receiver 12 of the sill member 1 to erect. A frame main body 31 of a head member 3 is loaded to the upper part of the bolt 41, the height of the frame main body 31 is adjusted with nuts 43, and the upper surface of the frame main body 31 is flush with a road 72 of the asphalt 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole or handhole opening device and a method for constructing a manhole or handhole on a paved surface using the same.

[0002]

2. Description of the Related Art When constructing a manhole or a handhole on an asphalt road, first, an opening device is attached to an upper portion of a concrete standing pipe which is a base pipe. At this time, the upper surface of the opening device (the upper surface of the opening lid) is set to the same height as the road surface height of the asphalt after construction. Next, crushed grain stones are laid to a certain thickness, leveled, and then asphalt is driven. The asphalt is driven slightly higher than the height of the finished surface and pressure is applied by a roller to finish it to a predetermined road surface height so that it is flush with the upper surface of the opening device.

[0003]

However, the conventional manhole and handhole construction methods described above have the following problems. That is, since the height of the opening device is already fixed to the asphalt around the opening device, it is difficult to apply pressure by the pressure roller to the obstacle. If there is not enough pressure,
The asphalt in the surrounding area is of the same thickness, but lacks the density compared to the other areas under sufficient pressure.
For this reason, after construction, the road surface of the surrounding part gradually dents due to the load of the car, etc., and the tire of the running car hits the step with the opening device generated by this, generating a loud noise, and further the steering wheel is removed. There was a risk of flat tires. Further, the road surface is cracked due to the distortion of the recesses, and water leakage easily occurs in the manhole and the handhole.

Therefore, generally, the asphalt in the peripheral portion of the opening device is further raised and the pressure is sufficiently applied by the pressure roller. But in this case too,
It was difficult to adjust the amount of asphalt to build up, and in many cases the surrounding area became too high and the upper surface of the opening device was recessed from the asphalt road surface. In this case, rainwater collects in the recessed portion when it rains, which not only causes water to leak inside the manhole and handhole, but also makes it difficult to open the lid during work.

Further, the manhole and the handhole may be provided not only on a horizontal road surface but also on an inclined road surface. However, since the concrete vertical pipe is usually installed vertically, the upper surface of the opening device attached to the upper part of the concrete vertical pipe is horizontal. That is, in such a case, a concave portion or a step is formed between the upper surface of the horizontal opening device and the inclined road surface, which causes the same problem as described above.

[0006]

The object of the present invention is to solve the above problems.
When constructing a manhole or handhole on the pavement surface, it is possible to apply sufficient pressure to the asphalt around the opening device, preventing the formation of dents and steps on the road surface near the opening device, Prevent water leakage and allow cars to travel safely. Another object of the present invention is to make it possible to finish the upper surface of the opening device flush with the pavement surface even when the pavement surface on which the manhole or handhole is constructed is inclined.

[0007]

[Means for Achieving the Object] The means of the present invention for achieving the above object are as follows. The first means is an opening device used when constructing a manhole or a handhole on a pavement surface such as an asphalt road, and the device is attached to the opening of a buried base pipe. A lower frame member, a detachable temporary lid member that closes the opening of the lower frame member, an open / close lid, and an upper frame member that is attached to the lower frame member, and a height of the upper frame member. A manhole or handhole opening device comprising: adjusting means for adjusting.

The second means is the manhole or handhole opening device according to the first means, which has a tilt fixing means for tilting and fixing the upper frame member.

The third means is a method of constructing a manhole or a handhole on a pavement surface such as an asphalt road, in which a lower frame member is attached to an opening of a buried base pipe. And closing the opening of the lower frame member with the temporary lid member, and driving the asphalt to fill the base pipe, the lower frame member and the temporary lid member, and apply a rolling pressure to the surface to a predetermined height. A step of removing the asphalt to expose the lower frame member and the temporary lid member to form a temporary hole, removing the temporary lid member from the lower frame member, and removing the temporary frame member from the lower frame member. Attaching the frame member, adjusting the upper frame member so that the upper surface of the upper frame member is substantially flush with the road surface, the gap between the temporary hole and the upper frame member, and the lower frame member and the upper frame Injecting filler into the gap between members Comprising the steps of closing Te, a, a method of constructing a manhole or hand hole in the pavement.

[0010]

When the compaction is applied to the surface of the asphalt, the opening device is not exposed on the surface and there is no obstacle so that it can be sufficiently solidified. In other words, there is no need for troublesome work such as paying attention to the amount of asphalt that heaps up around the opening device, or finely manipulating the compaction roller so as not to destroy the opening device, as in the past. Can be done quickly.

The work of finishing the upper surface of the opening device and the road surface flush with each other is easy because the upper frame member of the opening device is adjusted to the road surface after the road surface is finished by rolling to make the upper surface flush. It can be finished beautifully. In addition, since the road surface around the opening device is sufficiently hardened, a dent or a step is unlikely to occur after the construction. Therefore, it is possible to prevent water leakage into the base pipe, and it is possible to prevent a risk that a tire of a moving vehicle hits the tire and generates a large noise, a steering wheel is taken off, or the tire is punctured.

When the filling material hardens, the filling portion has a sufficient shielding effect, and the upper frame member is supported by the strength of the filling material even when, for example, each member constituting the height adjusting means and the tilt fixing means is corroded. be able to.

In the device provided with the inclination fixing means, even when the road surface of the construction portion is inclined and the base pipe is standing upright, the upper surface of the opening device, that is, the upper surface of the upper frame member is It becomes possible to incline and make it substantially flush with the road surface. Therefore, since it is possible to eliminate the recesses and steps that occur because the upper frame member is horizontal as in the conventional case, it is possible to prevent water leakage into the base pipe and generate a large amount of noise by hitting the tires of a running vehicle. You can prevent dangers such as, the steering wheel being taken off, and the tire being flat.

[0014]

The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a cross-sectional view of essential parts showing a construction state of an opening device according to the present invention. Reference numeral A is an opening device for a handhole, which includes a lower frame member 1 and a temporary lid member 2 (shown in FIG. 2).
And an upper frame member 3 and a height adjuster 4. Since the temporary lid member 2 is removed during construction, it is not shown in FIG. 1, which is a completed construction drawing.

The lower frame member 1 has a substantially flat cylindrical shape. The mounting flange 1 is provided on one end side which is a lower part of the lower frame member 1.
1 is provided all around. On the other end side which is the upper portion of the lower frame member 1, a receiving portion 12 formed in a thick wall is provided over the entire circumference. The upper surface of the receiving portion 12 is formed flat. The receiving portion 12 has six screw holes 1 at equal intervals in the circumferential direction.
3, 13, ... Are provided. Also, the flange 1
Square fitting pieces 1 at three locations on the inner surface of one part at equal intervals
4 and 14 are provided so as to project downward.

The height adjusting tool 4 which is a height adjusting means,
It consists of a bolt 41 of a required length and two nuts 42 and 43. The bolt 41 does not have a bolt head, is substantially a screw portion, and is erected by being screwed into each of the screw holes 13.
Further, as described above, the temporary lid member 2 is in the process of being constructed.
Is used. The temporary lid member 2 is disc-shaped and is formed to have a diameter substantially the same as the outer diameter of the receiving portion 12 of the lower frame member 1. Temporary lid member 2
Insertion holes 21, 21 ... Corresponding to each screw hole 13
Is pierced through. The temporary lid member 2 is fixed by a bolt 44 (see FIG. 2) different from the height adjusting tool 4.

The upper frame member 3 is attached to the upper part of the height adjuster 4. The upper frame member 3 has an annular frame body 31. A central portion of the frame body 31 is a lid hole 32 which is a circular opening. The inner side surface of the lid hole 32 is formed by narrowing the lower side so that the circular opening / closing lid 33 to be mounted does not fall. When the opening / closing lid 33 is fitted into the lid hole 32, the upper surface of the opening / closing lid 33 is flush with the opening edge of the lid hole 32.

Grooves 34, 34 are provided on the upper and lower surfaces of the frame body 31 over the entire circumference. .. penetrate through the recessed groove 34 at six positions in the circumferential direction at equal intervals. Each insertion hole 35 corresponds to each screw hole 13, and its inner diameter is slightly larger than the diameter of the bolt 41 and is formed loosely. The insertion holes 35 together with the height adjusters 4 form tilt fixing means. Then, the frame main body 31 is attached to the bolt 41 such that the insertion holes 35 are sandwiched by the nuts 42 and 43.

(Operation) FIGS. 2 to 4 are explanatory views showing a construction method. FIG. 2 is a cross-sectional view of an essential part showing a state in which the lower frame member is covered with a temporary lid member and the asphalt is rolled and finished.
FIG. 3 is a cross-sectional view of an essential part showing a state in which asphalt is removed to provide a temporary hole and a temporary lid member is removed, and FIG. 4 is a cross-sectional view of an essential part showing a state in which a height adjusting bolt is attached to a lower frame member. The construction method and operation of this embodiment will be described with reference to the drawings.

A concrete standing pipe 5, which is a base pipe, is vertically embedded in the portion where the handhole is constructed. The concrete standpipe 5 projects to the road surface before construction. Each fitting piece 14 is provided on the inner surface of the opening of the concrete standpipe 5.
Is inscribed and the lower frame member 1 is mounted. Then, the temporary lid member 2 is attached to the receiving portion 12 of the lower frame member 1 with the bolt 44.
The temporary lid member 2 may be attached to the lower frame member 1 in advance.

Granulated crushed stones 6 are spread to a required thickness and asphalt 7 is driven in to fill the concrete standing pipe 5, the lower frame member 1 and the temporary lid member 2. Then, pressure is applied by a pressure roller (not shown) to finish the surface to a predetermined height (see FIG. 2). When applying rolling pressure to the surface, nothing is exposed on the surface of the construction part, so it can be sufficiently hardened. In other words, there is no need for troublesome work such as paying attention to the amount of asphalt that heaps up around the opening device, or finely manipulating the compaction roller so as not to destroy the opening device, as in the past. Can be done quickly. Since the surface of the opening device A which is the peripheral portion is sufficiently hardened, a dent or a step is unlikely to occur. Therefore, after the construction, it is possible to prevent water leakage into the concrete vertical pipe 5, and to prevent the risk that the tires of a moving vehicle may hit the tires and generate a loud noise, the steering wheel may be taken away, or the tires may be flat. it can.

A circular temporary hole 71 is opened in the asphalt 7 with a cutter (not shown), the asphalt 7 and the grain-crushed stone 6 are removed, and the lower frame member 1 and the temporary lid member 2 are exposed. Next, the temporary lid member 2 is removed (see FIG. 3).

Each screw hole 13 of the receiving portion 12 of the lower frame member 1
The bolt 41 of the height adjuster 4 is screwed on and set up. A nut 43 on the lower side is screwed and attached to the upper portion of each bolt 41 (see FIG. 4).

At the top of each bolt 41, each insertion hole 35
Then, the frame body 31 of the upper frame member 3 is placed. Each nut 43 is turned to adjust the height of the frame body 31 so that the upper surface of the frame body 31 is flush with the road surface 72 of the asphalt 7 which is substantially horizontal. And each bolt 4
The nut 42 on the upper side is screwed into the screw 1, the frame body 31 is tightened and fixed, and the portion of the bolt 41 protruding from the nut 42 to the upper part is cut. It should be noted that the nut 42 is provided in the upper groove 34.
, So that it does not protrude from the upper surface of the frame body 31. In this way, in the work of finishing the upper surface of the upper frame member 1 and the road surface 72 to be flush with each other, the height of the upper frame member 1 is adjusted to make the upper surface flush with each other after the road surface 72 is finished by sufficiently rolling. It can be finished easily and beautifully.

The gap 8 between the temporary hole 71 and the upper frame member 3 and the gap between the lower frame member 1 and the upper frame member 3 are filled with the filling material 8.
As the filler 8, for example, a resin mortar kneaded into clay is used. When the filler 8 is hardened, the shielding effect of the filled portion is sufficient, and even if the height adjuster 4 is corroded, the strength of the filler 8 can support the upper frame member 3. An opening / closing lid 33 is provided in the lid hole 32 of the frame body 31.
(See Fig. 1).

FIG. 5 is a sectional view showing another construction of the opening device according to the present invention. In this construction, the bolts 41 are loosely fitted into the insertion holes 35, so that the bolts 41 are obliquely penetrated and the frame body 31 of the upper frame member 32 is fitted to the inclined road surface 72. It is fixed by inclining it. As a result, the upper frame member 3 as in the conventional case
Since it is possible to eliminate recesses and steps from the sloped road surface caused by the horizontal surface, it is possible to prevent water leakage into the concrete stand pipe 5 and generate a large amount of noise by hitting the tires of a running vehicle. You can prevent dangers such as, the steering wheel being taken off, and the tire being flat. It should be noted that the present invention is not limited to the illustrated embodiment,
Various modifications are possible within the scope of the claims.

[0027]

The present invention having the above-mentioned structure has the following effects. (A) According to the present invention, when a rolling compaction is applied to the asphalt surface, since the opening device is not exposed on the surface and there is no obstacle, it is possible to sufficiently compact the compaction by rolling. In other words, there is no need for troublesome work such as paying attention to the amount of asphalt that heaps up around the opening device, or finely manipulating the compaction roller so as not to destroy the opening device, as in the past. Can be done quickly.

(B) To finish the upper surface of the opening device and the road surface flush with each other, after the road surface is finished by rolling sufficiently,
Since the upper frame member of the opening device is adjusted to be flush with the road surface so that the upper surface is flush with the road surface, the finish can be easily and beautifully made.
Since the road surface around the opening device is sufficiently hardened, a dent or a step is unlikely to occur. Therefore, it is possible to prevent water leakage into the base pipe, and it is possible to prevent a risk that a tire of a moving vehicle hits the tire and generates a large noise, a steering wheel is taken off, or the tire is punctured.

(C) In the device provided with the inclination fixing means, even if the road surface of the construction portion is inclined and the base pipe is standing upright, the upper surface of the opening device, that is, the upper frame member. It is possible to incline the upper surface of the vehicle so as to be substantially flush with the road surface. Therefore, it is possible to eliminate the recesses and steps on the road surface caused by the upper frame member being horizontal as in the conventional case, so that it is possible to prevent water leakage and the danger of a running vehicle.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts showing a construction state of an opening device according to the present invention.

FIG. 2 is a cross-sectional view of essential parts showing a state in which a lower frame member is covered with a temporary lid member and asphalt is compacted by rolling.

FIG. 3 is a cross-sectional view of essential parts showing a state in which asphalt is removed, a temporary hole is provided, and a temporary lid member is removed.

FIG. 4 is a cross-sectional view of essential parts showing a state where height adjusting bolts are attached to the lower frame member.

FIG. 5 is a cross-sectional view showing another construction state of the opening device according to the present invention.

[Explanation of Codes] A Opening Device 1 Lower Frame Member 13 Screw Hole 2 Temporary Lid Member 3 Upper Frame Member 31 Frame Main Body 32 Lid Hole 33 Open / Close Lid 35 Insertion Hole 4 Height Adjusting Tool 41 Bolt 42, 43 Nut

Claims (3)

[Claims] 1. An opening device used when constructing a manhole or a handhole on a pavement surface such as an asphalt road, the device being a lower frame member attached to an opening of a buried base pipe. A detachable temporary lid member for closing the opening of the lower frame member; an upper frame member having an opening / closing lid and attached to the lower frame member; and an adjusting means for adjusting the height of the upper frame member. An opening device for a manhole or a handhole, which comprises: 2. The manhole or handhole opening device according to claim 1, further comprising a tilt fixing means capable of tilting and fixing the upper frame member. 3. A method for constructing a manhole or a handhole on a pavement surface such as an asphalt road, the method comprising the steps of mounting a lower frame member in an opening of a buried base pipe, and a lower frame member. A step of mounting and closing a temporary lid member in the opening of the, a step of driving in asphalt to fill the base pipe, the lower frame member and the temporary lid member, and applying a rolling pressure to finish the surface to a predetermined height, Removing the asphalt so that the lower frame member and the temporary lid member are exposed to form a temporary hole; removing the temporary lid member from the lower frame member; attaching the upper frame member to the lower frame member; Adjusting the upper frame member so that the upper surface of the member is substantially flush with the road surface; filling material in the gap between the temporary hole and the upper frame member and the gap between the lower frame member and the upper frame member. Injecting and closing , Including, construction method of a manhole or hand hole in the pavement.