JPH11181713A - Work execution structure of road boundary part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide constructive structure of a road boundary part boundary blocks of which do not slip sideways even when a vehicle travels on an apron part of the boundary blocks of a road. SOLUTION: A landscaping layer 3 is formed to a drilled ground on a boundary part of a roadway (a) and another road surface (b), and concrete made foundation blocks 2 are roughly continuously laid along the roadway (a) on an upper surface of the landscaping layer 3. Thereafter, boundary blocks 1 having apron parts 10 overhanging to the side of the roadway (a) and coping parts 11 projected to upper parts facing the other road surface (b) are continuously laid on upper surfaces of the foundation blocks 2, and sideway slippage preventive members 4 having rigidity in a state to pass through overlapped parts of the boundary blocks 1 and the foundation blocks 2 are provided in a burying state at two points along the longitudinal direction of the boundary blocks 1 on the overlapped foundation blocks 2 and the boundary blocks 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction at a road boundary which is a boundary between a road and a sidewalk, a median strip, and other road surfaces on a road.

[0002]

2. Description of the Related Art A conventional construction structure at a boundary between a road and a sidewalk will be described with reference to FIG. FIG. 4 is a partially enlarged sectional view showing a construction structure of a conventional road boundary. The boundary between the road a and the other road surface such as the sidewalk b is excavated in a groove shape over a required width, and the ground of the excavated portion forms a ground preparation layer 3 of a required width which is hardened by laying a layer of crushed stone or gravel. I do. On the upper surface of the terrain layer 3, square base blocks 2 are continuously laid along the side of the road a, and on the upper surface of the base block 2, a boundary block 1 is continuously provided via a mortar layer 20. Will be laid down.

The boundary block 1 is composed of an apron section 10 whose front side projects toward the road a, and a coping section 11 protruding upward along the back side of the apron section 10 facing the sidewalk b. ing. Basic block 2
The boundary block 1 is a concrete molded product, and if necessary, a reinforcing bar (not shown) is arranged inside. The mortar layer 20 is an empty mortar layer in which cement and sand are mixed at an appropriate ratio. When the bottom surface of the boundary block 1 is uneven (having irregularities),
It is laid in order to absorb the unevenness and improve the setting of the boundary block 1. After laying the boundary block 1 as described above, gravel and earth and sand are buried in the excavation part on the side of the road a and the excavation part on the side of the sidewalk b around the foundation block 2 and the boundary block 1, and the upper surface thereof is covered with asphalt layer. By finishing, the upper surface of the apron part 10 of the boundary block 1 and the road surface of the road a are made continuous, and the sidewalk b is formed on the back side of the coping part 11.

[0004]

When the road is narrow, the vehicle often runs on the apron portion 10 of the boundary block 1 on the road a side of the road boundary, or when the vehicle is running as described above. A large force may act on the boundary block 1 in the direction of the sidewalk b due to, for example, the wheels of the vehicle contacting the front side of the coping unit 11.
As described above, when a large force is occasionally applied to the boundary block 1 from the side of the road a to the sidewalk b, the boundary block 1 shifts laterally, and the coping portion 11 of the boundary block 1 floats. The portion 11 may have a step. When a large force is occasionally applied to the boundary block 1 from the side of the road a in the direction of the sidewalk b, the boundary block 1 slightly shifts to the side of the sidewalk b in opposition to the embankment of the sidewalk b, and the lateral shift over time. In some cases, the boundary blocks 1 continuously laid are slightly deformed in a zigzag manner, or the road surface of the sidewalk b is partially raised and destroyed.

[0005] It is an object of the present invention to provide a vehicle in which a vehicle travels on an apron section of a continuously laid boundary block.
It is an object of the present invention to provide a construction structure of a road boundary portion that can prevent lateral displacement of the boundary block.

[0006]

According to the present invention, a construction for constructing a road boundary portion according to the present invention is configured as follows to achieve the above object. That is, in the construction structure of the road boundary portion according to claim 1, a leveling layer 3 is formed on the excavated ground at a boundary portion between the road a and the other road surface b, and an upper surface of the leveling layer 3 A substantially concrete base block 2 is continuously laid along the roadway a. On the upper surface of the base block 2, an apron portion 10 whose front side projects toward the roadway a side, and an apron portion 10 of the apron portion 10 A concrete boundary block 1 having a coping portion 11 protruding upward along the rear side facing another road surface b is continuously laid and laid, and the base block 2 and the boundary block 1 that overlap each other have the same structure. At least two embedded portions 4 separated along the length direction of the boundary block 1
5A, a lateral displacement prevention member 4 having rigidity is provided in an embedded state so as to penetrate an overlapping portion between the boundary block 1 and the base block 2.

According to a construction of a road boundary portion according to a second aspect, in the construction structure of a road boundary portion according to the first aspect, the embedding portion 4a of the base block 2 and the lateral slip prevention member 4 overlapping the boundary block 1 is different from each other. The boundary blocks 1 are located near both ends in the longitudinal direction of the ebron section 10.

According to a third aspect of the present invention, there is provided a road boundary construction structure, comprising:
A through hole 40 is formed in the boundary block 1 at a position corresponding to the buried portion 4a in a substantially vertical direction, and at a position corresponding to the buried portion 4a of the basic block 2,
An insertion hole 41 that is linearly continuous with the through hole 40 is formed, and a lateral displacement prevention member 4 made of a single steel rod or iron rod is inserted and fixed in the through hole 40 and the insertion hole 41 in an embedded manner. It is characterized by having.

According to a fourth aspect of the present invention, there is provided a road boundary construction structure according to the third aspect.
At least a gap between the inner peripheral surface of the through hole 40 and the insertion hole 41 and the peripheral surface of the lateral displacement prevention member 4 is filled with an epoxy resin-based or other resin-based adhesive 42. .

According to a construction of a road boundary portion according to a fifth aspect, a leveling layer 3 is formed on an excavated ground at a boundary portion between a road a and another road surface b. An apron section 10 is provided on the upper surface of the basic block 2, in which an apron portion 10 whose front side is protruding toward the roadway a is laid on the base block 2.
And a concrete boundary block 1 having a coping portion 11 protruding upward along a rear surface side of the apron portion 10 facing the other road surface b. In the front part facing the road a side of the boundary block 1, at least two places separated along the length direction of each boundary block 1 intersect with the overlapping part of the basic block 2 and the boundary block 1. In this state, the lateral displacement prevention members 4 having rigidity are brought into contact with each other, and each of the lateral displacement prevention members 4 is fixed to at least a front portion of the boundary block 1.

According to a sixth aspect of the present invention, in the construction of a road boundary portion according to the fifth aspect, each of the lateral displacement preventing members 4 is made of a steel plate or an iron plate. The boundary block 1 is fixed to the front portion of the apron portion 10 by screwing a bolt 45 to a cap nut 44 provided in the front portion of the apron portion 10 embedded therein.

According to a seventh aspect of the present invention, there is provided a road boundary construction structure according to any one of the first to sixth aspects, wherein the adjacent boundary blocks 1 and / or the adjacent basic blocks 2 are arranged. Mutually, they are connected to each other.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a road boundary construction structure according to the present invention will be described with reference to FIGS. First Embodiment FIG. 1 is a partial perspective view showing a construction structure of a road boundary portion of a first embodiment according to the present invention, and FIG. 2 is a partially enlarged sectional view of the construction structure of FIG.

The construction structure at the road boundary described below relates to the construction at the boundary between the pedestrian crossing and the sidewalk b on the road a. However, the construction at the other road boundary is almost the same. is there. The boundary of the sidewalk b of the road a is excavated in the form of a groove over a required area, and a ground leveling layer 3 of a required width is formed by laying a layer of crushed stone or gravel on the inner bottom of the excavated portion.
Is formed.

On the top surface of the terrain layer 3, the foundation blocks 2 are laid closely. Each base block 2 is a concrete molded product having the same shape and the same dimensions,
Is formed in a flat plate shape having a width substantially equal to the width of the road boundary block 1 and a reinforcing bar (not shown) arranged therein as necessary. At both ends on the front side and the back side of each base block 2, a connecting concave portion 5 a is formed, and the cap nut 5 b is provided in the concave portion 5 a in an embedded manner. When arranging the blocks 2 continuously, the connecting plate 5 is guided into the connecting recesses 5a of the adjacent basic blocks 2 and 2, and the bolts 50 are screwed to the cap nuts 5b so that the adjacent basic blocks 2 , 2 are interconnected. When laying the foundation block 2 on the upper surface of the terrain layer 3, if the foundation block 2 rattles due to unevenness (unevenness) between the upper surface of the terrain layer 3 and the bottom surface of the foundation block 2, An empty mortar (a mortar in which sand and cement are mixed at a predetermined ratio) is thinly spread on the upper surface, and the base block 2 is densely spread thereon. With this construction, the unevenness is absorbed by the empty mortar layer, and the installation of the base block 2 is stabilized. The empty mortar layer absorbs moisture or moisture and solidifies over time after construction.

On the upper surface of the foundation block 4 laid as described above, the boundary blocks 1 are laid continuously. Since there is usually some unevenness on the bottom surface of the boundary block 1, in order to absorb the unevenness and stabilize the setting of the boundary block 1, a mortar layer 20 made of an empty mortar is provided between the base block 2 and the boundary block 1. Intervene. The mortar layer 20 solidifies by absorbing moisture or moisture after construction. Each boundary block 1 is a concrete molded product having the same shape and the same size, and has an apron portion 10 on the front side that protrudes toward the road a, and
And a coping portion 11 integrally formed so as to protrude upward along the back side located on the side of the sidewalk b, and a reinforcing bar is arranged inside as necessary. At both ends of the front part and the back part of the boundary block 1, a connecting recess 5 a similar to the base block 2 is formed, and a metal or high-density polyethylene cap nut is formed in the inner bottom of the recess 5 a. 5b is embedded. Each boundary block 1
A notch portion 12 for joints is formed so as to be continuous with the upper edge portion of one end portion, and a substantially vertical penetrating portion which forms an embedding portion 4a described later is provided at a position near both ends in the length direction of the apron portion 10. Holes 40, 40 are formed in advance.

When the boundary block 1 is laid, the concave portions 5a, 5 for connecting the ends of the adjacent boundary blocks 1, 1 are connected to each other.
The connecting plate 5 is guided to a, and the bolt 50 is screwed to the cap nut 5b to connect the adjacent boundary blocks 1 and 1 to each other. Between the upper edges of the adjacent boundary blocks 1, 1, the joint cutout 12 is filled with an elastic foaming resin or a joint material 13 made of empty mortar or raw mortar.

In the overlapping basic block 2 and boundary block 1, at least two embedding portions 4a separated along the length direction of the boundary block 1, as shown in FIG. A lateral displacement prevention member 4 having rigidity is provided in a buried state so as to penetrate the overlapped portion with. In this embodiment, the embedding portions 4a, 4a are located near both ends in the length direction of the apron portion 10 in each boundary block 1 superimposed on the basic block 2, and the apron portion 1
Through holes 40, 40 are formed in advance at positions corresponding to the embedded portions 4a, 4a. Basic block 2
A drill (not shown) is inserted from the through-hole 40 of each boundary block 1 overlapping with the above, and a straight line continuous with the through-hole 40 at a position corresponding to the embedding portion 4a of the base block 2 thereunder. An insertion hole 41 is formed.
In the through hole 40 and the insertion hole 41, a lateral displacement prevention member 4 made of one steel rod or iron rod is inserted and fixed in an embedded manner.

In this embodiment, each of the through holes 40
And the insertion hole 41 have an inner diameter of about 43 mm, and the lateral displacement prevention member 4 made of a steel rod inserted therein has an outer diameter of about 32 mm. The gap between the inner peripheral surface of the through hole 40 and the insertion hole 41 continuous with the through hole and the peripheral surface of the lateral displacement prevention member 4 is filled with an epoxy resin-based or other resin-based adhesive 42. The raw mortar 43 is filled in the space above the upper end of the lateral displacement prevention member 4 in 40. The embedded length of the lateral displacement prevention member 4 in the boundary block 1 is 100 to 150 mm, and the embedded length in the base block 2 is 40 to 70 mm.

As described above, when the laying of the boundary block 1 has been completed and the embedding of the lateral slip prevention member 4 has been completed so as to be continuous with the boundary block 1 and the base block 2 therebelow, the excavation on the road a side is performed. Crushed stones and gravel are buried in the excavated part on the side of the sidewalk and the sidewalk b, the upper surface is finished with asphalt layer, and the upper surface of the apron part 10 and the surface of the roadway a are connected. Construction and leveling of the construction area. With the completion of this leveling,
Construction of the road boundary is completed.

The construction structure of the road boundary part of the first embodiment is as follows.
The following effects are obtained. First, the overlapping of the basic block 2 and the basic block 2 is overlapped with the basic block 2 and the basic block 2 at at least two embedding portions 4a separated along the length direction of the basic block 2. A rigid lateral displacement prevention member 4 is provided in a buried state so as to penetrate the portion, and the boundary block 1
Is strongly linked to the foundation block 2 below it,
When a large force is applied to the boundary block 1 in the sidewalk direction, the lateral displacement in the sidewalk b direction is prevented. Boundary block 1
Is received by the base block 2 below it, but does not shift laterally because the base block 2 is buried in the ground. Secondly, since the overlapping portions 4a of the base block 2 and the embedded portion 4a of the lateral displacement prevention member 4 in the boundary block 1 are located near both ends in the longitudinal direction of the eblon portion 10 of each of the boundary blocks 1, Compared with the case where the embedding portion 4a is located in the coping portion 11, the action of preventing the lateral displacement is large, and the embedding operation of the lateral displacement preventing member 4 is easy. Third, a through hole 40 is formed in a position substantially corresponding to the buried portion 4a of the boundary block 1 in a substantially vertical direction, and a position corresponding to the buried portion 4a of the basic block 2 is linearly formed with the through hole 40. A continuous insertion hole 41 is formed,
In the through hole 40 and the insertion hole 41, the lateral displacement prevention member 4 made of one steel rod or iron bar is inserted and fixed in a buried state, so that the lateral displacement prevention member 4 prevents lateral displacement to the boundary block 1. The force is easier to work. Fifth, since the gap between the inner peripheral surface of the through hole 40 and the insertion hole 41 and the peripheral surface of the lateral displacement prevention member 4 is filled with an epoxy resin-based or other resin-based adhesive 42, the lateral displacement is prevented. The prevention member is more strongly fixed in the through hole 40 and the insertion hole 41, and the lateral displacement prevention member 4 is fixed in the through hole 40 and the insertion hole 41 in a shorter time.

Second Embodiment FIG. 3 is a partial sectional view showing the construction of a road boundary according to a second embodiment of the present invention. In the construction structure of this embodiment, the base block 2 and the boundary block 1
A lateral displacement prevention member 4 having rigidity in a state of intersecting with an overlapping portion between the base block 2 and the boundary block 1 at a position near both ends of the front portion facing the roadway a side, The prevention member 4 is provided on the boundary block 1.
It is fixed to the front part of. The side slip prevention member 4 is made of a steel plate or an iron plate. The side slip prevention member 4 is formed by screwing a bolt 45 to a cap nut 44 provided in the front surface of the apron portion 10 of the boundary block 1 so as to be embedded. It is fixed to the front part of the part 10.

According to the construction structure of the road boundary portion of the second embodiment, the upper end of the lateral slip preventing member 4 is fixed to the front portion of the apron portion 10 of the boundary block 1, and the lower end of the lateral slip preventing member 4 is Since the gravel or the earth and sand buried in the excavation part on the side a strongly presses against the front part of the foundation block 2, even if a large force is applied to the boundary block 1 in the direction of the sidewalk b, the lateral displacement is prevented. You. Second
According to the construction structure of the embodiment, the lateral displacement prevention member 4 made of a steel plate or an iron plate is screwed with a bolt 45 to a cap nut 44 provided in an embedded manner in the front portion of the apron portion 10 of the boundary block 1. Since it is fixed to the front part of the apron part 10, the attachment of the lateral displacement prevention member 4 is easier. Other configurations, operations, and effects of the construction structure of the second embodiment are substantially the same as those of the construction structure of the first embodiment, and thus description thereof will be omitted.

Other Embodiments In the construction structure of the first embodiment, the embedding portion 4a is positioned at the coping portion 11 of each boundary block 1, and the lateral displacement prevention member 4 is moved from the coping portion 11 to the base block 2 therebelow. The present invention can be implemented even if it is provided so as to be embedded. In the construction structure of the second embodiment, the lower part of the lateral displacement prevention member 4 may be fixed to the front part of the base block 2. In this case, it is possible to fix the upper end portion of the lateral displacement prevention member 4 and the apron portion 10 of the boundary block 1 in the same manner.

[0025]

According to the construction of the road boundary according to the first aspect of the present invention, the base block 2 and the boundary block 1 that overlap each other are separated from each other along the length direction of the boundary block 1. In at least two embedding portions 4a, rigid lateral displacement prevention members 4 are provided in a buried state so as to penetrate the overlapping portion between the boundary block 1 and the basic block 2, and the boundary block 1 is provided below the basic block 2 Because it is strongly linked to
Even when a large force is applied in the sidewalk direction, the lateral displacement can be prevented. The lateral displacement force acting on the boundary block 1 is received by the base block 2 below the boundary block 1. However, since the basic block 2 is buried in the ground, it does not move in the lateral direction.

According to the construction of the road boundary portion according to the second aspect of the present invention, the embedding portion 4a of the lateral displacement preventing member 4 in the overlapping basic block 2 and the boundary block 1 is formed by the ebron portion of each of the boundary blocks 1. 10 is located near both ends in the length direction, so that the embedding portion 4a has a greater effect of preventing lateral displacement as compared with the case where the embedding portion 4a is located at the coping portion 11, and the embedding work of the lateral displacement preventing member 4 is easy. It is.

According to the construction of the road boundary portion according to the third aspect of the present invention, a through hole 40 is formed substantially vertically at a position corresponding to the embedding portion 4a of the boundary block 1, and An insertion hole 41 linearly continuous with the through hole 40 is formed at a position corresponding to the embedding portion 4a, and a lateral shift made of one steel rod or iron rod is formed in the through hole 40 and the insertion hole 41. Since the prevention member 4 is inserted and fixed in a buried state, the force of preventing the lateral displacement to the boundary block 1 by the lateral displacement prevention member 4 is more likely to act.

According to the construction of the road boundary portion according to the fourth aspect of the present invention, the gap between the inner peripheral surfaces of the through hole 40 and the insertion hole 41 and the peripheral surface of the lateral slip prevention member 4 is provided with epoxy. Since the resin-based or other resin-based adhesive 42 is filled, the lateral displacement prevention member is more strongly fixed in the through hole 40 and the insertion hole 41, and the lateral displacement prevention member 4 is connected to the through hole 40 and the insertion hole. It is fixed within 41 in a shorter time.

According to the construction of the road boundary portion according to the fifth aspect of the present invention, the upper end of the lateral displacement prevention member 4 is fixed to the front portion of the apron portion 10 of the boundary block 1,
Since the lower end of the lateral displacement prevention member 4 is strongly pressed against the front part of the foundation block 2 by gravel or earth and sand buried in the excavation part on the side of the road a, a large force is applied to the boundary block 1 in the direction of the sidewalk b. , The lateral displacement can be prevented.

According to the construction of the road boundary portion according to the invention as set forth in claim 6, the lateral displacement prevention member 4 made of a steel plate or an iron plate is embedded in the front portion of the apron portion 10 of the boundary block 1. By fixing the bolt 45 to the cap nut 44 by screwing it to the front part of the apron part 10, the attachment of the lateral displacement prevention member 4 is easier.

According to the construction structure of the road boundary portion according to the present invention, the adjacent boundary blocks 1 and / or the adjacent base blocks 2 are connected to each other, so that these are laid. While being connected, the movement of the already laid blocks is suppressed, so that the construction can be carried out more smoothly.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing a construction structure of a road boundary portion according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view of a construction structure at a road boundary part in FIG. 1;

FIG. 3 is a partial sectional view showing a construction structure of a road boundary portion according to a second embodiment of the present invention.

FIG. 4 is a partially enlarged sectional view showing a conventional construction structure at a road boundary.

[Explanation of symbols]

 a Roadway b Other road surface (sidewalk) 1 Boundary block 10 Apron section 11 Coping section 12 Notch section 13 Joint material 2 Basic block 20 Mortar layer 3 Leveling layer 4 Lateral slip prevention material 4a Embedding section 40 Through hole 41 Insert hole 42 Adhesive material 43 Raw mortar 5 Connecting plate 50 Bolt 5a Recess 5b Cap nut

Claims (7)

[Claims] 1. At the boundary between a road a and another road surface b, a leveling layer 3 is formed on the excavated ground, and a substantially concrete foundation is formed on the upper surface of the leveling layer 3 along the road a. The blocks 2 are continuously laid side by side. On the upper surface of the base block 2, an apron portion 10 whose front side projects toward the road a, and a rear side of the apron portion 10 facing the other road surface b. A concrete boundary block 1 having a coping portion 11 protruding upward is laid continuously in a row. The overlapping basic block 2 and the boundary block 1 are separated from each other along the length direction of the boundary block 1. In at least two buried portions 4a, rigid lateral displacement prevention members 4 are provided in a buried state so as to penetrate the overlapping portion between the boundary block 1 and the base block 2. The construction structure at the road boundary, characterized in that: 2. An embedding portion 4a of a lateral displacement prevention member 4 in the overlapping basic block 2 and boundary block 1.
The road construction structure according to claim 1, wherein each of the boundary blocks (1) is located near both ends in the longitudinal direction of the ebron portion (10) of each of the boundary blocks (1). 3. The embedding section 4 of the boundary block 1.
a through hole 40 is formed in a substantially vertical direction at a position corresponding to the insertion hole 4a, and an insertion hole 41 linearly continuous with the through hole 40 is formed at a position corresponding to the embedding portion 4a of the basic block 2.
The lateral slippage prevention member 4 made of one steel rod or an iron rod is inserted and fixed in the through hole 40 and the insertion hole 41 in an embedded manner. The construction structure of the road boundary described in 1. 4. A gap between at least the inner peripheral surface of the through hole 40 and the insertion hole 41 and the peripheral surface of the lateral displacement prevention member 4 is filled with an epoxy resin or other resin adhesive 42. The construction structure for a road boundary part according to claim 3, characterized in that: 5. A leveling layer 3 is formed on the excavated ground at the boundary between the road a and the other road surface b, and a substantially concrete foundation is formed on the upper surface of the leveling layer 3 along the road a. The blocks 2 are continuously laid side by side. On the upper surface of the base block 2, an apron portion 10 whose front side projects toward the road a, and a rear side of the apron portion 10 facing the other road surface b. Boundary blocks 1 made of concrete having a coping portion 11 protruding upward are laid continuously in a row. Each of the overlapping basic blocks 2 and a front portion of the boundary block 1 facing the roadway a side have respective boundaries. At least two places separated along the length direction of the block 1, a rigid lateral displacement prevention member 4 is brought into contact with the base block 2 and the boundary block 1 so as to intersect with an overlapping portion thereof. Each of the lateral displacement prevention members 4 is fixed to at least a front portion of the boundary block 1. 6. Each side slip prevention member 4 is made of a steel plate or an iron plate. The side slip prevention member 4 is provided with a bolt 45 to a cap nut 44 provided to be embedded in a front portion of the apron portion 10 of the boundary block 1. The construction structure of a road boundary part according to claim 5, wherein the apron part (10) is fixed to a front part of the apron part (10) by screwing. 7. The construction structure for a road boundary according to claim 1, wherein adjacent boundary blocks 1 and / or adjacent base blocks 2 are connected to each other. .