JP2004285600A - Connection method of side ditch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection method of a side ditch capable of accurately carrying out work for making a joint in a gap between side ditches at a curved place. <P>SOLUTION: The side ditch 1 providing a slit 1a having a narrow width on the upper part is installed by butting the end face 1b, and the gap S formed between the tow end faces 1b of the side ditch 1 is filled with a joint filler 4 having fluidity to execute the joint. A bag body 6 expanded by pressure of fluid 9 is made to forcibly enter the inside from the slit 1a of the side ditch 1, and the joint filler 4 is filled in a state to close the inside of the gap S with the expanded bag body 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to a technical field related to a connection method for joining joints in gaps between side grooves provided with narrow slits on an upper portion.
[0002]
2. Description of the Related Art Generally, in the case of a gutter manufactured at a factory instead of a site, it is necessary to construct a joint at a construction site in a gap formed between the gutters which are installed with their end faces abutting each other. As a concrete construction, a construction method of filling a gap with a joint material having fluidity such as mortar is employed.
[0003]
Recently, due to demands for safety measures, reduction of manufacturing cost, and the like, as shown in FIGS. 7 and 8, a side groove 1 provided with a narrow slit 1a in a length direction without greatly opening an upper portion has been provided. ing. The slit 1a is provided with a lid made of metal, synthetic resin, or the like having a water passage hole as necessary.
[0004]
In this type of gutter 1, joints are constructed as shown in FIG. That is, as shown in FIG. 8 (A), after the cobblestones 2 and the concrete 3 are cast on the construction surface, the gutter 1 is installed with the joint material 4 interposed below the butted end face 1b. Subsequently, as shown in FIG. 8B, a joint material 4 is filled into the gap S (excluding the lower portion) formed between the end surfaces 1 b of the installed side grooves 1 from outside the side grooves 1.
[0005]
At this time, since the upper part of the gutter 1 is closed except for the slit 1a, the construction worker cannot insert his / her fingers into the gutter 1 or visually check the inside of the gutter 1; We have to rely on our experience to build joints. Therefore, as shown in FIG. 8 (B), it is difficult to construct an accurate joint along the end face 1b of the gutter 1 and the sealing property of the joint is inadequate, or the joint has an end face 1b of the gutter 1. It is in the present situation which is causing the poor construction that it protrudes to the inside beyond that and impedes the water permeability of the gutter 1. This poor construction is particularly remarkable in a curved portion where the straight side groove 1 designed to have a length of about 2 m is bent and arranged so that the gap S expands in a fan shape.
[0006]
For this reason, there is a demand for the development of a technique for accurately joining joints in the gap S between the side grooves 1 provided with a narrow slit at the top.
[0007]
2. Description of the Related Art Conventionally, for example, the following technology is known as a technology related to joint construction.
[Patent Document 1] JP-A-7-127119.
Patent Literature 1 describes a method of connecting side grooves in which a locking groove is provided on an end face of a side groove and a band-shaped water-swellable water-stopping material is interposed when the end faces of the side grooves are abutted.
[0008]
The gutter connection method according to Patent Literature 1 is to expand the water-swellable water-stopping material by watering after abutment of the gutters or by test water passing after the installation of the gutters, and the gutter is expanded by the expanded water-swellable water-stopper Fill the gap to complete the joint.
[0009]
In the gutter connection method according to Patent Literature 1, when the gap is expanded in a fan shape as shown in FIG. There is a problem that the joints cannot be accurately constructed in the gaps between the side grooves because they are easily spread.
[0010]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a gutter connection method capable of accurately applying joints to gaps between gutters at a curved portion.
[0011]
Means for Solving the Problems In order to solve the above-mentioned problems, a method for connecting a side groove according to the present invention employs the following means.
[0012]
That is, in claim 1, a side groove provided with a narrow slit at an upper portion is installed with the end faces abutting each other, and a gap formed between the end faces of the side grooves is filled with a flowable joint material to fill the joint. In the connection method of the gutter for constructing the joint, injecting the bag body that expands by the pressure of the fluid into the inside from the slit of the gutter, filling the joint material with the expanded bag body closing the inside of the gap. Features.
[0013]
In this means, since the inflated bag closes the inside of the gap, the filled joint material is prevented from protruding inward beyond the end face from outside the side groove.
[0014]
According to a second aspect of the present invention, in the method of connecting the side grooves according to the first aspect, the bag is connected to a hose through which fluid is supplied and discharged.
[0015]
In this means, the bag body is expanded and contracted by the supply and discharge of the fluid by the connected hose.
[0016]
According to a third aspect of the present invention, in the method of connecting a gutter according to the first or second aspect, the bag body is contracted after the joint is constructed and pulled out from the slit of the gutter.
[0017]
In this means, the bag is recovered from the gutter after use and reused.
[0018]
According to a fourth aspect of the present invention, in the method of connecting a gutter according to the first or second aspect, the bag body is formed of a water-soluble material, and is left inside the gutter after construction of the joint.
[0019]
With this means, the bag is left in the gutter after use and is thrown away.
[0020]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a gutter connecting method according to the present invention; FIG.
[0021]
1 to 3 show an embodiment (1) of a gutter connection method according to the present invention.
[0022]
This embodiment is configured based on the method shown in FIG.
[0023]
That is, as shown in FIG. 1 (A), after setting a paving stone 2 and a rubble concrete 3 on a construction surface, a joint material 4 is interposed at a lower portion of an abutted end surface 1b to narrow the upper portion in a longitudinal direction. A side groove 1 provided with a slit 1a having a width is installed.
[0024]
Subsequently, as shown in FIG. 1 (B), the bag 6 to which the hose 5 is connected enters the inside through the slit 1a (near the gap S) of the side groove 1. As shown in FIG. 2A, a valve 7 and a fluid supply source 8 are connected to the hose 5. The valve 7 comprises a three-way switching valve. The fluid supply source 8 is selected to supply a fluid 9 such as an air pump, a water pump, and an engine (exhaust gas) of a construction vehicle. The hose 5 facilitates intrusion of the side groove 1 of the bag body 6 from the slit 1a and operations described later, and also ensures supply and recovery of the fluid 9 to and from the bag body 6. The bag 6 is made of a rubber material or the like that expands under the pressure of a fluid 9 such as gas (air, exhaust gas) and liquid (water).
[0025]
Subsequently, as shown in FIG. 2B, the fluid 9 is supplied from the fluid supply source 8 to the bag body 6 via the hose 5 and the valve 7. As a result, as shown in FIG. 1C, the bag body 6 expands and sticks to the inner wall surface of the side groove 1. Therefore, the inflated bag 6 closes the inside of the gap S.
[0026]
Subsequently, as shown in FIG. 1 (D), a joint material 4 is filled into the gap S (excluding the lower part) formed between the end surfaces 1 b of the installed side grooves 1 from outside the side grooves 1. At this time, since the inflated bag body 6 closes the inside of the gap S, the joint material 4 covers the end face 1b even if the filling is performed very forcibly to avoid the formation of an unfilled portion such as a void. It does not protrude to the inside of the side groove 1 beyond. Therefore, the joint can be accurately constructed in the gap S between the side grooves 1. This operation and effect are the same even when the side groove 1 is installed at a curved portion where the gap S is expanded in a fan shape. In addition, when filling the joint material 4, if the supply of the fluid 9 from the fluid supply source 8 is stopped and the valve 7 is switched to prevent the discharge of the fluid 9, the expansion of the bag body 6 is maintained. can do.
[0027]
Thereafter, the joint material 4 is cured while maintaining the expansion of the bag 6.
[0028]
Then, as shown in FIG. 2C, the fluid 9 is discharged from the bag body 6 via the hose 5 and the valve 7 (natural discharge). As a result, the bag 6 contracts as shown in FIG. The contracted bag body 6 is pulled out of the slit 1a of the side groove 1 by the hose 5, as shown in FIG. This bag 6 is reused in another gap S to reduce the construction cost.
[0029]
FIG. 4 shows an embodiment (2) of a gutter connection method according to the present invention.
[0030]
In this embodiment, the valve 7 of the above-described embodiment (1) is provided with a function of adjusting the applied pressure and the negative pressure, and supplies the fluid 9 from the fluid supply source 8 to the valve 7 when the fluid 9 is discharged from the bag body 6. It is configured as follows.
[0031]
According to this embodiment, since the fluid 9 discharged from the bag 6 is pressurized and accelerated by the fluid 9 supplied from the fluid supply source 8, the bag 6 can be rapidly contracted. Further, it is effective for forcibly contracting the bag body 6 when the bag body 6 has reduced the contraction function due to long-term inflation.
[0032]
FIG. 5 shows an embodiment (3) of a gutter connection method according to the present invention.
[0033]
In this embodiment, the bag 6 of the above-described embodiments (1) and (2) is formed of a water-soluble (not dissolved by the moisture of the joint material 4) material, and after the joint is applied, the inside of the gutter 1 is formed. Is configured to be left behind.
[0034]
According to this embodiment, the bag 6 as it is inflated is torn off from the hose 5 by the slit 1a of the side groove 1, and the work of collecting the bag 6 can be omitted. Note that the bag body 6 left inside the side groove 1 is dissolved and disappears when the test water is passed.
[0035]
FIG. 6 shows an embodiment (4) of the gutter connection method according to the present invention.
[0036]
In this embodiment, a capsule 10 for generating a fluid 9 is built in the bag 6. An operation string 11 is connected to the capsule 10. The bag 6 is connected to a hanging string 12 for pulling down and raising the side groove 1 from the slit 1a.
[0037]
As the capsule 10, a cylinder that compresses and stores a fluid 9 made of gas, a capsule that mixes different chemicals to generate a gas, and the like are selected. The operation cord 11 is used to operate a cock of a cylinder or a destruction of a mixing / blocking wall of chemicals.
[0038]
According to this embodiment, a large-scale facility for supplying and recovering the fluid 9 becomes unnecessary.
[0039]
As described above, in the gutter connection method according to the present invention, the expanded bag closes the inside of the gap and projects from the outside of the gutter to the inside beyond the end face of the filled joint material. Is prevented, so that there is an effect that the joint can be accurately constructed in the gap between the side grooves at the curved portion.
[0040]
Furthermore, the bag is expanded and contracted by the supply and discharge of the fluid by the connected hose, so that the operation of the bag is facilitated and the supply and recovery of the fluid to and from the bag are ensured. effective.
[0041]
Furthermore, since the bag is recovered from the side gutter after use and reused, the construction cost is advantageously reduced.
[0042]
Furthermore, since the bag is left in the side groove after use and is thrown away, there is an effect that the labor for collecting the bag is not required.
[Brief description of the drawings]
FIG. 1 is a sectional view of a step of an embodiment (1) of a gutter connection method according to the present invention, in which the order of steps is shown in the order of (A) to (E).
FIG. 2 is a circuit diagram of a device configuration connected to FIG. 1, wherein (A) shows a basic configuration, and (B) and (C) show switching to a different operation.
FIG. 3 is a sectional view of a step following FIG. 1 (E).
FIG. 4 is a circuit diagram of an apparatus configuration for carrying out an embodiment (2) of a gutter connection method according to the present invention.
FIG. 5 is a sectional view of a final step showing an embodiment (3) of a gutter connection method according to the present invention.
FIG. 6 is a front view of a main part showing an embodiment (4) of a gutter connection method according to the present invention.
FIG. 7 is a plan view showing an example of installation at a curved portion of a gutter of a general factory manufacturing type.
8 is a cross-sectional view of the construction of the general joint of FIG. 7, in which the construction order is shown in the order of (A) and (B).
[Explanation of symbols]
Reference Signs List 1 side groove 1a slit 1b end face 4 joint material 6 bag body 9 fluid S slit

Claims (4)

Gutters provided with narrow slits at the top are installed with their end faces abutting each other, and in a gutter connection method of filling joints having fluidity into gaps formed between the end faces of the gutters and constructing the joints. A joint method for connecting the side grooves, wherein a bag body which is inflated by the pressure of the fluid is made to enter into the inside from the slit of the side groove, and the joint material is filled with the inflated bag body closing the inside of the gap. 2. The side groove connecting method according to claim 1, wherein the bag is connected to a hose through which fluid is supplied and discharged. 3. The method of connecting gutters according to claim 1, wherein the bag body is contracted after the joint is applied and pulled out from the slit of the gutter. 3. The gutter connection method according to claim 1, wherein the bag body is formed of a water-soluble material, and is left inside the gutter after construction of the joint.

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