JP2772618B2 - Rigid protective fence capable of storing electric cables and the like, and its construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rigid protective fence for a median strip or a roadside of an automobile road.

[0002]

2. Description of the Related Art Conventionally, rigid protective fences for a median strip of a road for automobiles and rigid protective fences for a roadside have been used to allow an automobile to enter an opposing lane due to an unexpected driving error and contact an oncoming vehicle. Alternatively, it is provided to prevent a collision or jumping from the road side to cause an accident, and to enable safe driving. For this reason, rigid guard fences, especially for the median strip, should be rigid enough not to be destroyed by contact or collision with the car, and should not be moved by the impact force of the car, so that an erroneously driven car will be in the opposite lane. The primary focus is to prevent intrusion.

[0003] Trees are planted in the median strip so as to provide a driver with peace of mind when driving.

To meet such a demand, for example, Japanese Utility Model Laid-Open Publication No. Sho 63-130507 shown in FIG. 6 has a groove-shaped opening at an intermediate portion, and the groove is used for tree planting. The invention discloses a rigid protective fence for a median strip which is made of a block and is fixed to a road surface with a fixing device such as an anchor bolt so that the block does not move.

Since roads connect cities between long distances, electric wires, gas pipes, water and sewage systems, and various other things have been buried and used. But,
In recent years, in addition to the laying of electric cables, the concept of the information highway has emerged greatly, and the expansion of the information and communications network using optical fibers and the like has been called for in the 21st century. It is being used. However, it has the original purpose of a rigid protective fence that is rigid, resistant to impact, hard to move, and secure as a median strip for roads and a rigid protective fence for the roadside, and it meets the needs of the information highway concept described above. At present, satisfactory barriers for road dividers and roadsides have not been proposed.

[0006]

The problem to be solved by the present invention is that the above-mentioned rigidity is strong against impact as a central divider of a motorway or a rigid protective fence for a roadside, and is hard to move and is safe. It can meet the original purpose of the protective fence, can be installed without obstructing the communication cable laid on the median strip or the roadside, and can provide a place for laying electric cables etc. inside the rigid protective fence, Another object of the present invention is to provide a rigid protective fence which is easy to construct and its construction method.

[0007]

Means of the present invention for solving the above-mentioned problems are as follows. A first aspect of the present invention is a two-sided rectangular shape comprising a ground fence and an underground buried leg and standing upright and facing each other. And two protective fence plates having an upper end slightly lower than the upper end of the protective fence plate and facing the ground fence part slightly above the side edge of the protective fence plate and separated from each other, and A connecting plate for standing and connecting the inner walls of the protective fence plate slightly downwards and a seal concrete plate fitted between the upper ends of the protective fence plate horizontally and flush with the upper end of the protective fence plate; The width of the sealed concrete plate is the same as the width between the upper ends of the two protective fence plates, and a gap is provided between the lower surface of the sealed concrete plate and the upper end of the connection plate for passing electric cables and the like. Rigid protective fence that can store cables etc.

According to a second aspect of the present invention, the protective fence plate has a maximum thickness at a connection portion between the ground fence and the underground leg, and the underground leg of the two facing fence plates facing each other. A rigid protective fence capable of accommodating a precast concrete electric cable or the like, characterized in that the lower end of the inner wall is provided with a maximum separation at a lower end to serve as an accommodation section for an underground object such as a communication cable. According to a third aspect of the present invention, there is provided a rigid protection capable of accommodating a precast concrete electric cable or the like, wherein a side end of the protective fence plate has a fitting structure with a side end of another adjacent rigid protective fence to be butt-joined. It is a fence.

According to a fourth aspect of the present invention, the underground leg of the rigid protective fence capable of storing electric cables or the like is buried deep under the road pavement surface, and the adjacent rigid protective fence capable of storing electric cables or the like is provided. The side fences of the protective fences are fitted with the mating structure of the side fences, and concrete is poured into the space surrounded by the side fences and the connection fences to reinforce the concrete.
A space adjacent to the space filled with lied to put the medium to sediment in a space surrounded by the explosion Mamorusaku plate and the connecting plate of rigid guard fence, a top surface of the upper end and seal the concrete plate of fences plate in the flush This is a method for constructing a rigid protective fence capable of storing a precast concrete electric cable or the like, characterized by sealing a sealed concrete plate between the protective fence plates.

According to a fifth aspect of the present invention, in the underground embedding of an underground leg under a road pavement surface, the underground leg is straddled by an underground object such as a communication cable to be under a road pavement surface. This is a method for constructing a rigid protective fence capable of storing pre-cast concrete electric cables and the like, characterized by being embedded in the ground.

According to a sixth aspect of the present invention, in the sealing between the protective fence plates of the sealed concrete plate, an electric cable is laid in a gap formed by the upper end of the connection plate and the sealed concrete plate prior to the sealing. This is a construction method of a rigid protective fence that can store electric cables made of precast concrete.

[0012]

The rigid protective fence of the present invention capable of storing electric cables and the like has two protective fences facing each other by a connecting plate having an upper end slightly lower than the upper end of the protective fence plate. A gap in the place where the electric cable or the like is laid can be formed on the upper end of the connection plate. In addition, the two rigid protective fences facing each other are separated from each other, and the space between the inner walls of the protective fence plates is set up slightly downward, so that the width of the seal concrete plate is the same as the width between the upper ends of the two protective fence plates. Therefore, when the sealing concrete plate is fitted between the upper ends of the protective fence plate, the sealing concrete plate does not fall down and is level with the upper end of the protective fence plate.

[0013] Further, since the inner walls of the underground legs of the two facing fence plates facing each other are separated from each other by a maximum distance at the lower end, there is ample room for accommodating an underground object such as a communication cable. And since the underground leg is buried deep in the ground, it will not be moved even if the vehicle collides.
The side edge of the guard fence plate has a mating structure with the side end of the other adjacent rigid guard fence that is butt-joined, so that not only can it be securely joined, but also the adjacent rigid guard fences act on each other to strengthen the structure. I have to. Furthermore, concrete is cast in place in a space surrounded by the protective fence plate and the connecting plate on the side end side of the adjacent rigid protective fence, so that the structure is more solid. Also, the protective fence plate has a maximum thickness at the connecting portion between the ground wall and the underground buried leg, and the connecting plate has a maximum thickness at the lower end, and is provided between the two facing protective fence plates. The rigid fence is thick, heavy, and solid because the soil is buried in it. Since the present invention is a rigid protective fence made of precast concrete, it is only necessary to embed the underground buried legs in the ground and perform the above-mentioned concrete casting on site, so that there is no need for a fixing device as in the conventional case, The number of processes is small, and construction can be performed in a short time and at low cost.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a part of a rigid protective fence which can be accommodated such as an electric cable of the present invention and is installed on a road surface in a connected state. FIG. 2 is a front view of a rigid protective fence capable of storing electric cables and the like according to the present invention. FIG. 3 is a side view of a rigid protective fence capable of storing electric cables and the like according to the present invention. FIG. 4 is a plan view of a rigid protective fence capable of storing electric cables and the like according to the present invention. FIG. 5 is an explanatory front view of a rigid protective fence capable of storing an electric cable and the like of the present invention in which a communication cable and an electric cable are installed.

The rigid protective fence 1 of the present invention capable of storing electric cables and the like is made of precast concrete, and as shown in FIG.
As shown in FIG. 1, a sealing concrete plate 8 is horizontally fitted to the upper end 6 of the protective fence plate 2 to form a lid.

In this embodiment, as shown in FIG. 3, the protective fence plate 2 has a size of 1990 mm in width and 1500 mm in height, an upper ground fence 3 of 1000 mm in length and an underground leg of 500 mm in length below. Part 4 At the right side end 7 of the ground fence 3, a ridge 11 having a thickness of 75 mm protrudes to the right by 80 mm. At the left side end 7 of the ground fence 3, a concave strip 12 having a thickness of 75 mm is indented from the left side by 80 mm. That is, as shown in FIG. 4, the protruding strip 11 has a thickness of 75 mm on the right end inner wall side of the facing ground fence 3 facing and projects 80 mm to the right, and the concave strip 12 has a thickness of 75 mm on the left end inner wall side of the facing fence 3 facing the ground. It is indented 80mm from left to right. Then, as shown in FIG. 1, the left concave ridge 12 and the right convex ridge 11 of the adjacent rigid protective fence 1 are joined to each other by a fitting structure 10.

The thickness of the above-ground fence 3 and the underground leg 4 is the thinnest at the upper end of the above-ground fence 3 and the lower end of the underground leg 4 and 150 mm. The vicinity of the boundary of the portion 4 is 250 mm thickest. The two facing fence plates 2 facing each other are joined at the ground fence 3 by two connecting plates 5 with the upper end inner surface being separated by 500 mm. These two
The connecting plates 5 are arranged at a distance of 1310 mm between the inner walls of the upper ends. The height of the connection plate 5 is 850 mm, and its upper end is located 50 mm below the upper end of the rigid protective fence 1.
The thickness of the upper end portion of the connection plate 5 is 150 mm, the thickness increases toward the lower end, and the thickness of the lower end is 200 mm.

As described above, the rigid protective fence capable of storing electric cables and the like according to the present invention is integrally formed in a factory as precast concrete and has the above-mentioned dimensions. 48 tons.

The method of installing the rigid protective fence capable of storing electric cables and the like on an automobile road according to the present invention will be described. As shown in FIG. 5, a communication cable 17 is previously laid in the center soil of the median strip. On a road where the rigid protective fence 1 straddles the communication cable 17, the two underground buried legs 4 facing the rigid protective fence 1 are completely buried deep underground. Further, the underground leg portions 4 of the rigid protective fence 1 that are fitted and joined by the fitting structure 10 adjacent to each other are buried in the same manner as described above, and the rigid protective fences 1 are sequentially joined and arranged in the same manner. Even if the rigid protective fence 1 of the present invention is buried in this way, the two underground buried legs 4 facing the rigid protective fence 1 are separated from each other, so that it is difficult to lay the communication cable 17 and the like. It will not be.

Subsequently, as shown in FIG. 1, concrete 14 is cast on site to the height of the upper end 9 of the connection plate in a space surrounded by the connection plate 5 of the adjacent rigid protection fence 1 and the ground fence 3 of the adjacent rigid protection fence 1. Then, the adjacent rigid protective fence 1 is firmly connected. Space adjacent to the space filled with concrete
Then, the earth and sand 15 filled in the space surrounded by the connection plate 5 and the ground fence 3 are sufficiently packed to the height of the upper end 9 of the connection plate. By filling the concrete 14 and the infill soil 15 up to the height of the upper end 9 of the connecting plate in this way, even if the sealing concrete plate 8 is placed above them, the upper end 9 of the connecting plate, the filled concrete 14 and the infill A sufficient space is provided between the earth and sand 15 and the sealing concrete plate 8 for laying the communication cable 17 and the like. Then, after laying the electric cable 16 etc. in the space as needed, the sealing concrete plate 8 is fitted between the two ground fences 3 facing the rigid protective fence 1 and a lid is provided.

As described above, the pavement 13 is provided around the rigid protective fence 1 installed in the median road median strip, and the construction of the rigid protective fence 1 is completed.

[0022]

As described above, the rigid protective fence of the present invention is made of precast concrete and requires only the continuous installation of the rigid protective fence. It can be done safely, at low cost and with less. The underground leg of the rigid protective fence is buried deep in the ground, and the weight of one rigid protective fence is 3.48.
Because of the heavy weight, the rigid guard fence is less likely to be moved by an impact even if the vehicle collides, and the rigid guard fence is sufficiently thick to be easily broken. Therefore, it is possible to sufficiently prevent the vehicle from erroneously driving into the opposing lane.

Further, the installation of the rigid protective fence of the present invention does not impede the communication cables and the like buried underground, and provides room for laying electric cables and the like. Having.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a part of a rigid protective fence which can be accommodated such as an electric cable of the present invention and is installed on a road surface in a connected state.

FIG. 2 is a front view of a rigid protective fence capable of storing electric cables and the like according to the present invention.

FIG. 3 is a side view of a rigid protective fence capable of storing electric cables and the like according to the present invention.

FIG. 4 is a plan view of a rigid protective fence capable of storing electric cables and the like according to the present invention.

FIG. 5 is an explanatory front view of a rigid protective fence capable of storing an electric cable and the like of the present invention in which a communication cable and an electric cable are installed.

FIG. 6 is a view showing a conventional protective fence of a median strip.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rigid protective fence 2 Protective fence plate 3 Above-ground fence part 4 Underground buried leg part 5 Connection plate 6 Upper end 7 Side end 8 Sealed concrete plate 9 Upper end of connection plate 10 Fitting structure 11 Right convex strip 12 Left concave strip 13 Pavement 14 Concrete 15 Consolidated earth 16 Electric cable 17 Communication cable

Claims (6)

(57) [Claims] 1. A horizontally elongated rectangular fence comprising a ground fence and a buried underground leg, two standing fences facing each other, and an upper end slightly lower than the upper end of the protection fence. A connecting plate for connecting the two guard fences facing each other at the above-ground fence part slightly above the side end of the guard fence plate, and slightly lowering the gap between the inner walls of the protection fence plate and connecting them; A sealing concrete plate fitted between the upper ends of the protective fence plates horizontally flush with the upper ends of the protective fence plates, and the width of the sealing concrete plate is the same as the width between the upper ends of the two protective fence plates; A rigid protection fence capable of storing pre-cast concrete electric cables and the like, characterized by having a gap between the lower surface of the concrete plate and the upper end of the connection plate for passing electric cables and the like. 2. The protective fence plate has a maximum thickness at the connecting portion between the ground fence and the underground buried leg, and a lower end between the inner walls of the two underground buried legs of the facing fence plate. 2. A rigid protective fence capable of accommodating an electric cable or the like made of precast concrete according to claim 1, wherein the accommodating portion is provided with a maximum separation to accommodate an underground object such as a communication cable. 3. The precast concrete according to claim 1, wherein a side end of the protective fence plate has a fitting structure with a side end of another adjacent rigid protective fence to be butt-joined. Rigid protective fence that can store electric cables. 4. An underground buried leg portion of a rigid protective fence capable of storing electric cables and the like is buried deep under the road pavement surface, and an adjacent rigid protective fence plate of a rigid protective fence capable of storing electric cables and the like is provided. The mating structures at the side ends were butt-fitted together, concrete was reinforced in place in the space surrounded by the protective fence plate and the connecting plate on the side end, and the concrete was filled.
A space adjacent to the space to put the medium to sediment in a space surrounded by the connection plate and proof Mamorusaku plate rigid guard fence, the upper surface of the upper end and seal the concrete plate of fences plate in the flush sealing concrete plate A method for constructing a rigid protective fence capable of storing electric cables made of precast concrete, characterized by sealing between the protective fence plates. 5. In the underground embedding of an underground leg under a road pavement surface, the underground leg is straddled by an underground object such as a communication cable and embedded under the road pavement surface. The construction method of a rigid protective fence capable of storing an electric cable or the like made of precast concrete according to claim 4. 6. The sealing between the protective fence plates of the sealed concrete plate, prior to the sealing, an electric cable is laid in a gap formed by the upper end of the connection plate and the sealed concrete plate. Item 5
The construction method of the rigid protective fence that can store electric cables made of precast concrete as described in.