JPH06341121A - Structure of guard fence and execution method of said guard fence - Google Patents

Abstract

PURPOSE:To shorten the term of work by installing a concrete block, in which a cable is housed, on an excavated ground surface in a road and mounting a guard fence onto the block. CONSTITUTION:A road 11 is excavated and levelled concrete 12 is installed, and a gutter 13 made of precast concrete is mounted onto the level led concrete 12. A catchment inlet 15 is set up to the connecting section of mutual gutters 13 and the gutters 13 are connected, and a guard fence 14 is installed onto the gutters 13. The position of a catchment opening 14A formed to the guard fence 14 is adjusted so as to be positioned at the place of the catchment inlet 15, and a cover 17 is fixed to the guard fence 14 and the peripheries of the gutters 13 and the catchment inlet 15 are buried with soil. Accordingly, the gutters, etc., are mounted under the guard fence, thus increasing the effective width of the road.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a guard fence installed in a median strip of a road or an end portion of a road, and more specifically, to a concrete concrete of the guard fence and a water groove, a drain groove, a cable passage groove. The present invention relates to a structure of a guard fence which is also used as a concrete structure constituting the above and a construction method of the gart fence.

[0002]

2. Description of the Related Art A guard fence is installed at a median strip or an end portion of a road in order to ensure the safety of vehicle traffic.
The guard fence is classified into a type in which a metal strip is stretched and a type in which a concrete wall is installed. Normally, the guard fence made of this concrete wall body is formed by placing reinforcing bars at the site and placing it in concrete, but in some cases, a guard fence block of precast product manufactured in advance at the factory is installed at the site. In some cases.

An example of the above-mentioned conventionally known concrete guard fence will be explained with reference to FIG. First, the road 1 is excavated to a predetermined depth. Then, the leveling concrete 2 for placing a straight line or a horizontal surface is placed on the surface of the excavated portion. Next, the foundation concrete 3 is poured on the leveling concrete 2. When the foundation concrete 3 is poured, it is installed and placed in advance so that the reinforcing bars 4 project upward from the foundation concrete 3. A form (not shown) is installed so as to surround the reinforcing bars 4 installed on the basic concrete 3, and concrete is poured into the form by a device (not shown) to form the guard fence 5
To form.

The side portion of the road 1 on which the guard fence 5 is installed is also excavated, and the leveling concrete 6 is installed on the surface thereof. Then, the gutter 7 is embedded on the leveling concrete 6. The gutter 7 collects and discharges rainwater, dust, and the like on the road 1, is continuously installed along the road 1, and a collecting basin (not shown) is installed on the way to discharge it as sewage. . As the gutter 7, a precast concrete block manufactured in advance in a factory is often used in recent years, but the gutter 7 may be formed by pouring concrete on site.

As described above, the guard fence 5 and the side groove 7 may be precast concrete blocks or cast-in-place concrete formed by pouring concrete on site. In addition, the basic concrete 3 is actually formed by pouring concrete on site.

Incidentally, in the above-mentioned known guard fence, the side groove 7 is installed only on one side of the guard fence 5, but when the guard fence 5 is installed as a median strip, it is located on both sides of the guard fence 5. The gutter 7 may be installed in some cases.

[0007] Further, there are cases in which communication cables are buried along the guard fence on highways. Usually, this cable is arranged in a concrete block having a through groove or a pipe made of a metal pipe, and the concrete block or the pipe is buried in the ground. Such a concrete block for burying a cable also has the same structure or construction method as the side groove 7 as shown in FIG.

[0008]

The conventionally known guard fence as described above has the following problems. First, in the construction process, the number of steps is increased by the amount that the basic concrete 3 must be cast, and the construction period is increased by the amount of the step of placing the basic concrete 3 and the curing period of the basic concrete 3. . Further, the work cost and the material cost based on the placing process of the basic concrete are expensive and the cost becomes high.

Further, since the side wall of the guard fence is provided with a gutter or the like, the effective width of the road is reduced by that amount and the width of the vehicle lane is narrowed.

Therefore, the object of the present invention is to improve the above-mentioned drawbacks and to shorten the construction period and cost by using gutters and the like as basic concrete, while at the same time constructing and constructing a guard fence with a wide effective road. There is a way to provide.

[0011]

The features of the present invention are as follows. First, a structure of a guard fence, which comprises a gutter buried in the ground, a guard fence installed on the gutter, and a water collecting opening formed in the guard fence.

[0012] Next, a structure of a guard fence, which comprises a concrete block for burying a cable buried in the ground and a guard fence installed on the concrete block.

Further, a road is excavated, a ditch is installed on the excavated ground, a guard fence having a water collecting opening is installed on the ditch, and soil is buried around the ditch. How to install guard fence.

Furthermore, a road is excavated, a concrete block containing a cable is installed on the excavated ground, a guard fence is installed on the concrete block, and soil is buried around the concrete block. The construction method of the characteristic guard fence.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. 1 is a front view showing the structure of a guard fence according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a sectional view taken along the line BB of FIG. 1, and FIG. It is CC sectional drawing.

First, referring to FIGS. 1 to 4, the structure of a guard fence according to an embodiment of the present invention will be described. A leveling concrete 12 is installed on a road 11 and a gutter is placed on the leveling concrete 12. Install 13. Then, the guard fence 14 is installed on the side groove 13. The gutters 13 are precast products in this embodiment, but may be made of cast-in-place reinforced concrete. A water collecting basin 15 is provided at a connecting portion of the gutter 13, rainwater on the road 11 directly flows into the water collecting basin 15, and further, rainwater on the road 11 once flows into the ditch 13 and then It flows in through the water passage groove 13A of the side groove 13 and flows in. In order to allow rainwater on the road 11 to flow directly into the catchment basin 15, guard fence 1
A water collecting opening 14A is formed at the base end portion of No. 4. The installation position of the water collecting opening 14A is the same as the installation position of the water collecting basin 15. Furthermore, the rainwater on the road 13 is drained by the gutter 13.
A water collecting opening 14B is formed at the base end portion of the guard fence 14 so that the water can flow into the water passage 13A formed in the above. The installation position of the water collecting opening 14B is an intermediate portion of the water collecting opening 14A of the guard fence 14, and one or a plurality of water collecting openings 14B are formed with respect to the guard fence 14 formed of one block. Water passage groove 13 of the side groove 13
The rainwater flowing into A flows into the collecting basin 15 and directly collects into the collecting basin 1.
It is drained as sewage through the drainage opening 15A together with the rainwater that has flowed into the tank 5. A lid member 16 having a slit through which rainwater passes is covered on the water passage 13A of the side groove 13. A cover 17 that covers the water collecting opening 14A is fixed to the guard fence 14.

A method for constructing the guard fence of the present invention having the above-described structure will be described below. First, the road 11 is excavated, and the leveling concrete 12 is installed on the road 11 so that a straight line and a horizontal plane are formed. Next, a gutter 13 is installed on the leveling concrete 12. In this example, the gutter 13 is a precast concrete product. Then, the water collecting basin 1 is provided at the connecting portion between the gutters 13.
5 is installed and the gutters 13 are connected to each other. Then, the guard fence 14 is installed on the side groove 13. in this case,
The position of the water collecting opening 14A formed in the guard fence 14 is adjusted to the position of the water collecting basin 15. And
The side groove 13 and the guard fence 14 are connected by a fastener 18 (a bolt in this embodiment). Then cover 1
7 is fixed to the guard fence 14, and the surroundings of the gutter 13 and the water collecting basin 15 are filled with soil.

In the guard fence 14 with the gutters 13 of the present invention, rainwater on the road 11 is, on the one hand, a collection opening 14
It directly flows into the water collecting basin 15 through A, and on the other hand, once flows into the water collecting groove 13A of the side groove 13 through the water collecting opening 14B, which flows through the water flowing groove 13A and flows into the water collecting basin 15. It is discharged as sewage.

The structure of the guard fence and the construction method thereof described above are only one embodiment of the present invention, and the present invention is not limited to the above embodiment. For example, the guard fence and gutters may be formed in-situ by concrete pouring.

Further, the lid member having the slit is not always necessary and can be omitted. Further, as the lid member, a lid member without a slit may be provided in a portion other than the portion where the rainwater flows in, and a lid member having a slit may be provided in the portion where the rainwater flows in, or the lid member may not be provided. it can. Further, the shape of the water passage is not limited to the U shape, and may be circular. Further, the water collecting basin is not always necessary and can be omitted. In this case, the rainwater directly flows into the water passage of the side groove from the water collecting opening 14B and is discharged to the outside of the water passage 13A at an appropriate position. Furthermore, the water collecting openings may be opened on both sides of the guard fence so that rainwater can flow in from both sides of the guard fence. This structure is effective when the guard fence is installed as a median strip and roads are formed on both sides of the guard fence.

In addition to the above embodiments, the present invention includes embodiments having the following structures. That is, FIG. 5 is a cross-sectional view showing a structure of a guard fence according to another embodiment of the present invention. In this embodiment, concrete having through grooves for cables or the like instead of the side grooves in FIGS. 1 to 4 is used. It is a block. That is, the guard fence 23 is arranged on the groove-shaped concrete block 22 on which the cable 21 is arranged. In this case,
Since no water is collected into the channel-shaped concrete block 22, no water collecting opening is formed in the guard fence 23.

When installing the concrete block 22 on which the cable 21 is installed, maintenance of the cable 21 may be required in some cases. Therefore, as shown in FIGS. 6 and 7, an attachment / detachment wall member 24 for maintenance is installed. That is, a space is provided between the adjacent guard fences 23, and a wall member 24 made of a metal plate having substantially the same shape as the guard fence 23 is attached to the space between the guard fences 23 with a bolt 25 so as to be detachably installed. Further, a gap is provided also between the adjacent concrete blocks 22, and a work basin 26 is installed in the gap portion. When the maintenance of the cable 21 is required, the bolt 25 is removed and the wall member 24 is removed, so that the worker can enter the work rod 26 to perform the maintenance work.

FIG. 8 is a sectional view showing another embodiment of the present invention. In this embodiment, the side groove is a circular water channel 31, and the rainwater inflow slit 32 formed on the upper surface thereof is covered. Instead, the guard fence 33 is installed close to one side.

Since the construction steps of the embodiment shown in FIGS. 5 and 8 are substantially the same as the construction steps of the embodiment shown in FIGS. 1 to 4, the description thereof will be omitted.

[0025]

As described above, the following effects are provided by the present invention. First, since the basic concrete is omitted in the construction process, the process is simplified accordingly, and the construction process of the basic concrete and the curing period of the basic concrete are eliminated, and the construction period is shortened.
Further, the work cost and the material cost are reduced by the amount of the step of placing the basic concrete, and the low cost can be obtained.

Further, since a gutter or the like is installed under the guard fence, the effective width of the road is increased and the width of the vehicle lane is widened accordingly.

According to the guard fence structure for burying a cable in which a wall member that can be attached and detached is installed between adjacent guard fences, the cable can be easily maintained.

[Brief description of drawings]

FIG. 1 is a front view showing a structure of a guard fence according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4 is a sectional view taken along line CC of FIG.

FIG. 5 is a cross-sectional view showing another embodiment of the present invention.

FIG. 6 is a sectional view showing an embodiment in which a maintenance mechanism is provided in the embodiment of FIG.

7 is a cross-sectional view taken along line DD of FIG.

FIG. 8 is a sectional view showing another embodiment of the present invention.

FIG. 9 is a cross-sectional view for explaining a structure and a construction method of a known gart fence.

[Explanation of symbols]

 11 Road 12 Leveling Concrete 13 Gutter 14 Guard Fence 14A Water Collection Opening 14B Water Collection Opening 15 Water Collection Mouth 16 Lid Member 17 Cover 18 Stopper

Claims (12)

[Claims] 1. A structure of a guard fence, comprising a gutter embedded in the ground, a guard fence installed on the gutter, and a water collecting opening formed in the guard fence. 2. A structure of a guard fence, comprising a concrete block for burying a cable buried in the ground and a guard fence installed on the concrete block. 3. A guard according to claim 1 or 2, wherein one of the concrete block and the guard fence of the gutter or cable is a precast concrete product, and the other is cast-in-place concrete. Fuence structure. 4. The guard fence structure according to claim 1 or 2, wherein both the gutter or cable containing concrete block and the guard fence are precast concrete products. 5. The guard fence structure according to claim 1 or 2, wherein both the gutter or cable-containing concrete block and the guard fence are cast concrete. 6. Attaching to a gap between adjacent guard fences,
The guard fence structure according to claim 2, wherein a wall member having substantially the same shape as that of the guard fence block is provided so as to be removable. 7. A method of excavating a road, installing a gutter on the excavated ground, installing a guard fence having a water collecting opening on the gutter, and burying soil around the gutter. How to install guard fence. 8. A method of excavating a road, installing a cable-containing concrete block on the excavated ground, installing a guard fence on the concrete block, and burying soil around the concrete block. How to construct the guard fence. 9. The guard according to claim 6 or 7, wherein one of the concrete block and the guard fence of the gutter or cable is a precast concrete product, and the other is cast-in-place concrete. Fence construction method. 10. A method of constructing a guard fence according to claim 6 or 7, wherein both the gutter or cable containing concrete block and the guard fence are precast concrete products. 11. The method of constructing a guard fence according to claim 6 or 7, wherein both the concrete block for housing the gutter or the cable and the guard fence are cast concrete. 12. A wall member having substantially the same shape as that of the guard fence is attached to the guard fence by a fastening means so as to cover a gap between adjacent guard fences and is detachably provided. The wall member can be detached for maintenance of a cable. The method for constructing a guard fence according to claim 7, [0001]