JP2020007823A - Road lining unit for changing road width - Google Patents

Abstract

To provide a road lining unit for changing road width which enables a road surface lining operation with a reduced burden on an operator in the road surface lining operation even in the case of forming an excavation groove having a bent portion in the width direction with respect to the road surface.SOLUTION: A road surface lining unit for changing road width 1 is used for a road surface lining work of a construction performed by forming an excavation groove having a bent portion in the width direction of the road surface with respect to the road surface. The road surface lining unit for changing road width 1 includes a plurality of earth retaining members 10 arranged so as to be arranged plurally along the extending direction of the excavation groove on both side portions in the width direction of the excavation groove. Further, a width changing member 50 for connecting the parts is provided which is arranged at the side portions of the bent portion of the excavation groove, extends along the width direction of the excavation groove, and couples ends of both a first earth retaining member 10a and a second earth retaining member 10b located at the position sandwiching the bent portion.SELECTED DRAWING: Figure 6A

Description

  The present invention relates to a width changing road surface lining unit, and in particular, to a width changing road surface lining unit used in a road surface lining work of a construction performed by forming an excavation groove having a bent portion in a width direction with respect to a road surface. About.

  Conventionally, as a method of road surface lining work for construction work by forming an excavation groove on a road surface, in order to prevent landslides and sinking from occurring in the width direction of the excavation groove, the width of the excavation groove is reduced. 2. Description of the Related Art A road surface lining method in which a substantially L-shaped mountain retaining member is installed on both side portions and an opening of an excavation groove is closed with a lining plate is widely known (for example, see Patent Documents 1 and 2).

The road surface lining method described in Patent Literature 1 is an invention related to a method of placing a lining plate along a traveling direction of a road surface, a so-called vertical lining plate method.
Specifically, a plurality of L-shaped mountain retaining members are respectively installed at both ends in the width direction of the excavation groove formed on the road surface, and L-shaped end portions are respectively provided at both ends in the extension direction of the excavation groove. This is a method in which the forming member is placed on the bottom wall of the retaining member, and then the lining plate is placed on a pedestal provided on the end forming member. And an H-shaped girder for supporting the lining plate is installed). With the above configuration, the lining plate can be installed while exhibiting the mountain retaining effect.
In the vertical lining board construction method, since the lining boards are arranged side by side along the traveling direction of the road, the number of boundaries between the lining boards in the traveling direction is relatively small, which is more suitable for the traveling of the vehicle. It can be said to be a construction method.

The road surface lining method described in Patent Literature 2 is an invention relating to a method of placing a lining plate in a direction orthogonal to a traveling direction of a road surface, that is, a so-called lining plate horizontal placing method.
Specifically, a plurality of L-shaped retaining members are respectively arranged at both ends in the width direction of the digging groove, and end plates are respectively provided at both ends in the extending direction of the digging groove, at the side end portions of the retaining member. And mounting the lining plate on an overhang provided on the mountain retaining member. Even in the above configuration, a mountain retaining effect can be exhibited.
In the lining board horizontal placing method, when lining boards are arranged in a direction orthogonal to the traveling direction of the road, for example, when placing the lining board, a receiving girder is not required in terms of strength, and the The space occupied by the receiving column can be used effectively.

JP-A-2006-11513 JP-A-2006-14297

By the way, in forming an excavation trench on a road surface, it is not necessarily along the road surface depending on the condition of the road surface (for example, a situation in which a utility pole is partially buried in a part of the road surface, a situation in which a manhole is formed, and the like). It may not be possible to form a straight, ie rectangular or square, trench.
In the above case, since the road surface covering method as in Patent Document 1 or Patent Document 2 cannot be directly used, for example, an excavation groove having a bent portion in the width direction with respect to the road surface (to increase the width or reduce the width). After the formation of the excavation groove), an operator responds by processing the H-shaped steel or the L-shaped steel at the site level and welding them in an appropriate combination.
Therefore, there has been a demand for a road lining unit capable of reducing a burden on an operator in the road lining work.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a road surface lining work even when an excavation groove having a bent portion in the width direction of the road surface is formed with respect to the road surface. It is another object of the present invention to provide a width changing road lining unit which enables a road lining operation with a reduced burden on an operator.
Another object of the present invention is to provide a width changing road surface lining unit capable of sufficiently exhibiting a mountain retaining effect in a road surface lining operation.

According to the width changing road surface lining unit of the present invention, the object is to form a digging groove having a bent portion in a width direction of the road surface with respect to the road surface, and the road surface lining used in the road surface lining work of the construction work. A machining unit, each of which is arranged along a direction in which the excavation groove extends in a lateral portion of the excavation groove in a width direction, and has a first mountain retaining member and a fourth retaining member which are located at positions sandwiching a bent portion of the excavation groove. A double retaining member, provided on a side portion of the bent portion of the excavation groove, extending along the width direction of the excavation groove, and connecting both ends of the first and second retaining members to each other And a width changing member.
With the above-described configuration, even when a digging groove having a bent portion in the width direction of the road surface is formed with respect to the road surface, while exerting a mountain retaining effect on the bent portion in the road surface lining work, it is more convenient for the operator than before. A road lining unit with a reduced load can be realized.

At this time, a plurality of retaining members including the first retaining member and the second retaining member are provided, and the plurality of retaining members extend along the extending direction of the excavation groove at both side portions in the width direction of the excavation groove. It is good to arrange so that a plurality may be arranged.
With the above configuration, it is possible to realize a road surface lining unit capable of sufficiently exhibiting a mountain retaining effect in a road surface lining operation even when an excavation groove having a bent portion in the width direction with respect to the road surface is formed.

At this time, the mountain retaining member is a member that is elongated in the direction in which the excavation groove extends, and a vertical wall that is disposed along a side portion of the excavation groove, and the lower wall portion of the vertical wall extends from the lower end portion of the vertical wall. A bottom wall extending toward the center in the width direction of the excavation groove; and a bottom wall provided at an end portion of the mountain retaining member in the extension direction and arranged at a position in contact with both the vertical wall and the bottom wall. It is preferable that the width changing member connects the outer side surfaces of the horizontal walls of both the first mountain retaining member and the second mountain retaining member.
With the above configuration, the road surface lining unit can be installed with a simple arrangement and shape, and the mountain retaining member and the width changing member can be installed at the bent portion of the excavation groove.

At this time, the width changing member has a main body plate portion arranged along a side portion of the bent portion of the excavation groove, and the main body plate portion includes the first mountain retaining member and the second mountain retaining member. It is good to arrange | position so that it may contact with both said vertical walls along an up-down direction.
With the above configuration, since the mountain retaining member and the width changing member are arranged without gaps at both side portions in the width direction of the excavation groove and side portions of the bent portion, landslides and depressions occur from the side in the width direction of the excavation groove. This can be further prevented (the retaining effect can be sufficiently exhibited).

At this time, the width changing member has an auxiliary plate portion extending from the main body plate portion so as to protrude toward the center in the width direction of the excavation groove. The auxiliary plate portion includes the main body plate portion. And the other end attached to either one of the first and second fastening members.
Also, when the first mountain retaining member is located outside the second mountain retaining member in the width direction of the excavation groove, the main body plate portion abuts on the outer surface of the lateral wall of the first mountain retaining member. And the other end of the auxiliary plate portion may be attached so as to contact an outer surface of the lateral wall of the second retaining member.
According to the above configuration, the worker can arrange the mountain retaining member and the width changing member without any gap with a simple configuration. Further, it becomes easier for the operator to attach the width changing member (including the auxiliary plate portion) to each of the first and second retaining members from the center of the excavation groove. Therefore, it becomes easy for the operator to visually confirm the mounting position, and it is easy to secure a mounting work space.

At this time, it is preferable that the main body plate portion is a connection plate, and the auxiliary plate portion is an auxiliary plate provided separately from the connection plate.
According to the above configuration, the degree of freedom in designing the width changing member is increased, and a simpler shape can be realized.

At this time, it is preferable that the width changing member is fastened to both ends of the first fastening member and the second fastening member by a fastening member.
According to the above configuration, the worker can more efficiently perform the work of attaching the width changing member to each of the first and second retaining members.

ADVANTAGE OF THE INVENTION According to this invention, even if it forms the digging groove which has a bending part in the width direction of a road surface with respect to a road surface, the road surface lining operation which reduced the burden of the operator in the road surface lining operation is attained. A width changing road lining unit can be provided.
Further, it is possible to provide a width changing road surface lining unit capable of sufficiently exhibiting a mountain retaining effect in the road surface lining operation.

It is a figure showing the road surface lining structure using the road surface lining unit of this embodiment. It is a figure which shows the construction image at the time of using a road surface lining unit by a vertical installation method. It is a perspective view which shows a mode that a pair of mountain retaining members are installed. It is a perspective view which shows a mode that the mountain retaining end member was assembled. It is a perspective view showing signs that a width change member was attached. It is a perspective view showing signs that a pair of mountain retaining members were assembled. It is a principal part enlarged view of FIG. 6A. It is a perspective view which shows the mode that the receiving girder was assembled. It is a perspective view which shows a mode that the lining board was assembled. It is a perspective view which shows a mode that the mountain retaining end member was assembled. It is a perspective view showing the state where assembling of the road surface lining unit was completed. It is a top view which shows an example of the road surface lining unit in a vertical installation method. It is a top view which shows an example of the road surface lining unit in a vertical installation method. It is a top view which shows an example of the road surface lining unit in a horizontal placing method. It is a top view which shows an example of the road surface lining unit in a horizontal placing method.

Hereinafter, a width changing road surface lining unit (hereinafter, referred to as a road surface lining unit) according to an embodiment of the present invention will be described with reference to FIGS. 1 to 12A and 12B.
This embodiment is a road surface lining unit used for a road surface lining operation of a construction performed by forming an excavation groove having a bent portion in the width direction of the road surface with respect to the road surface, and both side portions of the excavation groove in the width direction And a plurality of retaining members arranged so as to be arranged in a plurality along the extending direction of the excavation groove, and arranged on a side portion of the bent portion of the excavation groove, extending along the width direction of the excavation groove, and bending the bent portion. The present invention relates to a road surface lining unit, comprising: a width changing member that connects both ends of a first mountain retaining member and a second mountain retaining member that are interposed therebetween.

As shown in FIG. 1, the road surface lining unit 1 according to the present embodiment is a work performed by forming an excavation groove A having a bent portion with respect to a road surface, for example, a work of installing a buried pipe B underground (buried underground). Used for road lining in construction).
The excavation groove A is a substantially rectangular groove in a plan view formed by excavating the pavement layer A1 and the soil layer A2 constituting the ground.
More specifically, the excavation groove A has a bottom wall and four side walls that stand substantially vertically from the bottom wall and are located on four sides. Of the four side walls, a pair of side walls located on both sides in the width direction of the excavation groove A face each other and extend along the extending direction of the excavation groove A. The remaining side walls are located at one end and the other end of the excavation groove A in the extending direction, and extend along the width direction of the excavation groove A.
The excavation groove A has a bent portion and further has a side wall at the bent portion.

As shown in FIGS. 1 and 3, the road lining units 1 are arranged so as to face each other on both side walls in the width direction of the excavation groove A, and are installed so as to be arranged in a plurality along the extending direction of the excavation groove A. 1 and 4, and a mountain end member 20 which is disposed on both side walls in the extending direction of the excavation groove A and is installed on the pair of mountain members 10 as shown in FIGS. As shown in FIG. 7, a girder 30 which is disposed at an intermediate portion in the direction of extension of the excavation groove A and is installed on the pair of girder members 10, and a girder end portion as shown in FIGS. And a lining plate 40 provided on the member 20 and the receiving girder 30.
The road surface lining unit 1 is provided on the side wall of the bent portion of the excavation groove A as shown in FIGS. 1 and 5 to 6A and 6B, and the first mountain retaining member is disposed at a position sandwiching the bent portion. A width changing member 50 is provided for connecting both ends of the member 10 (10a) and the second mountain retaining member 10 (10b).
In addition, this embodiment is the road surface lining unit 1 in the lining board vertical placing method.

In the above configuration, in the road surface lining structure using the road surface lining unit 1, as shown in FIG. 1, the upper surface of the lining plate 40 is installed continuously with the road surface located therearound.
Therefore, when the opening of the excavation groove A is closed by the lining plate 40, a pedestrian or the like can walk well without tripping between the upper surface of the lining plate 40 and the road surface.
On the other hand, when the construction is performed, the lining plate 40 is removed, and the burying work of the buried pipe B is performed in a state where the opening of the excavation groove A is exposed. Specifically, the bottom wall of the excavation groove A is first excavated to form a cloth excavation groove. Subsequently, the sheet pile 2 is driven along both side walls of the cloth digging groove to secure a work space. Between the opposing sheet piles 2, a not-illustrated cutting beam or the like is supported as a support. Thereafter, a foundation for setting the buried pipe B is cast at the bottom of the cloth digging groove, and the buried pipe B is set on the foundation.
During the construction, the safety fence 3 is erected at the position of the excavation groove A so that a pedestrian or the like does not fall into the excavation groove A. The safety fence 3 is assembled to the retaining member 10.

As shown in FIG. 3, the mountain retaining member 10 is a member made of a substantially L-shaped steel material for exerting a mountain retaining effect on both side walls in the width direction of the excavation groove A, and the mountain retaining members 10 adjacent to each other are It is fastened by fastening members such as fastening bolts.
The mountain retaining member 10 is a member that is long in the direction in which the excavation groove A extends, and extends vertically and is disposed along the side wall in the width direction of the excavation groove A; A bottom wall 12 extending from the lower end portion of the excavation groove A toward the center in the width direction of the excavation groove A, and provided on the bottom wall 12 at an end of the mountain retaining member 10 in the extension direction, the vertical wall 11 and the bottom wall 12. And a lateral wall 13 arranged at a position in contact with both of them.

The vertical wall 11 is a substantially rectangular wall portion that exerts a retaining effect of the retaining member 10, and is disposed so as to face a side wall in the width direction of the excavation groove A.
The bottom wall 12 is a substantially rectangular wall that supports the mountain retaining end member 20 and the receiving girder 30 from below, and is mounted on the bottom wall of the excavation groove A.
The horizontal wall 13 is a substantially trapezoidal wall for connecting adjacent mountain retaining members 10 and also functions as a wall for reinforcing the vertical wall 11 and the bottom wall 12.
A plurality of fastening holes 13a are formed on the side surface of the lateral wall 13, and fastening bolts are fastened to the fastening holes 13a. By screwing a nut to the fastened fastening bolt, the lateral walls 13 are connected to each other, and the fastening members 10 are fastened to each other.
The mountain retaining member 10 is classified into a type having horizontal walls 13 at both ends in the longitudinal direction and a type having horizontal walls 13 only at one end in the longitudinal direction.
More specifically, the mountain retaining members 10 arranged at the starting end and the terminal end of the excavation groove A extend the lateral wall 13 only at the end on the side adjacent to the other mountain retaining member 10 among the longitudinal ends. Have. On the other hand, the mountain retaining members 10 arranged at other than both ends in the extending direction of the excavation groove A have lateral walls 13 at both ends in the longitudinal direction.

Further, as shown in FIG. 3, the mountain retaining member 10 is provided on the bottom wall 12 at a predetermined interval in the extending direction of the mountain retaining member 10, and is provided at a position in contact with both the vertical wall 11 and the bottom wall 12. It is provided on the front surface of the vertical wall 11 at a predetermined interval in the extending direction of the reinforcing member 14 and the retaining member 10 to be disposed, and projects from the vertical wall 11 toward the center in the width direction of the excavation groove A. And a fence fixing portion 15 arranged as described above.
The reinforcing portion 14 is a substantially trapezoidal wall portion that reinforces the vertical wall 11 for exhibiting the mountain retaining effect and the horizontal wall 13 for supporting the mountain retaining end member 20 and the receiving girder 30.
The fence fixing part 15 is a metal part having a substantially V-shaped cross section for installing the safety fence 3, and is fixed to the vertical wall 11 by fixing the V-shaped end portion to the inner surface of the vertical wall 11. Have been.
A cylindrical opening is formed in the fence fixing part 15, and the support fence 3 is inserted into the opening so that the safety fence 3 is assembled to the mountain retaining member 10.

As shown in FIG. 4, the mountain retaining end member 20 is a steel material that exhibits a mountain retaining effect on both side walls in the extending direction of the excavation groove A, and is disposed between the pair of mountain retaining members 10. Is mounted on the bottom wall 12.
The mountain retaining end member 20 is a member that is long in the width direction of the excavation groove A, extends vertically, and is arranged along the side wall in the extension direction of the excavation groove A; A bottom wall 22 extending from the lower end portion of the wall 21 toward the center in the direction in which the excavation groove A extends, and a bottom wall 22 provided on the bottom wall 22 at a predetermined interval in the direction in which the mountain retaining end member 20 extends. A reinforcing portion 23 disposed at a position in contact with both the vertical wall 21 and the bottom wall 22, a pedestal portion 24 formed on the reinforcing portion 23 and extending along the extension direction of the retaining member 20. have.

The vertical wall 21 is a substantially rectangular wall portion that exerts a retaining effect of the retaining end member 20, and is disposed to face a side wall of the excavation groove A in the extending direction.
Both end portions in the longitudinal direction of the vertical wall 21 are formed so as to partially protrude outward in the longitudinal direction from the bottom wall 22, the reinforcing portion 23, and the pedestal portion 24. It is arrange | positioned so that it may each contact the outer surface of the extension direction of the mountain retaining member 10.
The bottom wall 22 and the reinforcing portion 23 are walls that support the pedestal portion 24 from below. Both ends in the longitudinal direction of the bottom wall 22 are placed on the bottom wall 12 of the pair of mountain retaining members 10.
The outer surfaces of both ends in the extending direction of the bottom wall 22 are arranged so as to abut against the vertical wall 11 of the mountain retaining member 10, respectively. Further, out of the plurality of reinforcing portions 23, the outer surfaces of the pair of reinforcing portions 23 provided at both ends of the mountain retaining end member 20 are also arranged so as to abut on the vertical wall 11.
The pedestal portion 24 is a pedestal portion that supports the longitudinal end portion of the lining plate 40 from below, and the outer surfaces of both ends in the extending direction of the pedestal portion 24 respectively correspond to the vertical wall 11 of the mountain retaining member 10. It is arranged so that it may touch.

As shown in FIGS. 7 and 8, the receiving girder 30 is a member made of H-shaped steel that supports the longitudinal end portion of the lining plate 40 from below, and extends along the width direction of the excavation groove A. The two end portions are placed on the bottom wall 12 of the mountain retaining member 10, respectively.
Further, the girder 30 is disposed at a position sandwiched between the lateral walls 13 of the opposed mountain retaining members 10 in the extending direction of the excavation groove A, and the outer surfaces of both ends in the longitudinal direction of the girder 30 are provided. , And are arranged so as to abut against the vertical walls 11 of the opposed mountain retaining members 10 respectively.
When the end portion of the lining plate 40 is placed on the upper surface of the girder 30, the end portions of the lining plate 40 that are adjacent to each other in the direction in which the excavation groove A extends are placed on the upper surface of the girder 30. Is done.

As shown in FIG. 8, the lining plate 40 is a rectangular plate-shaped steel material, and is installed such that the upper surface thereof is a flat surface and is continuous with a road surface located therearound.
The lining boards 40 are arranged along the traveling direction of the road in the case of the vertical lining board construction method, and are arranged in the direction perpendicular to the traveling direction of the road in the case of the lining board horizontal construction method.
In the present embodiment, the road surface lining unit 1 in the vertical lining plate construction method is described. However, the present invention is not limited to this. Can be used.

As shown in FIGS. 5, 6A, and B, the width changing member 50 is a substantially rectangular plate-shaped steel plate that connects the ends of the mountain retaining member 10 at positions sandwiching the bent portion of the excavation groove A. Therefore, it extends so as to be long in the width direction of the excavation groove A.
The width changing member 50 has a main body plate portion 51 arranged along the side wall of the bent portion of the excavation groove A, and a portion protruding from the main body plate portion 51 toward the center in the width direction of the excavation groove A. And an auxiliary plate portion 52 that extends.

The main body plate portion 51 is a rectangular plate-like connecting plate, and extends along the width direction of the excavation groove A, as shown in FIGS. It is arrange | positioned so that it may contact the vertical wall 11 of both the mountain retaining member 10a and the 2nd mountain retaining member 10b along the up-down direction.
Further, a plurality of fastening holes 51a are formed at both end portions in the extending direction of the main body plate portion 51, respectively.
More specifically, as shown in FIGS. 6A and 6B, when the first retaining member 10a is located outside the second retaining member 10b in the width direction of the excavation groove A, the front surface of the main body plate portion 51 is the first retaining member. The outer surface of the main body plate portion 51 in the extending direction abuts on the rear surface of the vertical wall 11 of the second mountain retaining member 10b.
The front surface of the main body plate portion 51 abuts against the outer side surface of the lateral wall 13 of the first mountain retaining member 10a, and the abutted portion (the portion where the fastening hole 51a is formed) is connected by the fastening member 53.

The auxiliary plate portion 52 is a rectangular plate-shaped auxiliary plate provided separately from the main body plate portion 51, and has one end portion 52 a attached to the front surface of the main body plate portion 51 and the outer surface of the lateral wall 13 of the mountain retaining member 10. , And the other end 52b attached to the other end.
More specifically, as shown in FIGS. 6A and 6B, when the first retaining member 10 a is located outside the second retaining member 10 b in the width direction of the excavation groove A, one end 52 a of the main body plate portion 51 is closed. The other end portion 52b is fastened to the outer side surface of the side wall 13 of the second mountain fastening member 10b by the fastening member 53 at the end portion on the side of the double mountain fastening member 10b.

  With the above configuration, even when an excavation groove having a bent portion in the width direction with respect to the road surface is formed, a road surface covering having a simple configuration capable of sufficiently exhibiting a retaining effect in the road surface covering work. An engineering unit 1 can be provided.

<Procedure for road lining method>
Next, a road lining method using the road lining unit 1 will be described with reference to FIGS.
In the present embodiment, as shown in FIG. 2, there is shown a construction image of the road surface lining unit 1 when a total of five lining plates 40 are arranged in two rows along the traveling direction of the road surface by the vertical laying method. is there.
When the road surface lining unit 1 is installed, a step of forming an excavation groove on the road surface in advance is required. Specifically, a cut line is formed on the surface layer of the road surface, and the pavement layer A1 and the soil layer A2 thereunder are excavated along the cut line to form a desired excavation groove.

First, as shown in FIG. 3, at the start end of the excavation groove in the extending direction, the mountain retaining members 10 are installed so as to face each other at both ends in the width direction.
At this time, the pair of mountain retaining members 10 are installed such that the vertical wall 11 faces the side walls at both ends in the width direction of the excavation groove.
Further, the mountain retaining members 10 are installed such that one end of the pair of mountain retaining members 10 in the extending direction is aligned with the starting end of the excavation groove in the extending direction.
Also, the mountain retaining members 10 having different total lengths are installed so that the entire length of the mountain retaining member 10 on the side where the bent portion of the excavation groove is located is shorter than the entire length of the other mountain retaining member 10.

Next, as shown in FIG. 4, between the pair of installed mountain retaining members 10, the mountain end member 20 is installed on the bottom wall 12 of each of the mountain retaining members 10.
At this time, the retaining end member 20 is installed so that the vertical wall 21 faces the side wall at the start end of the excavation groove in the extending direction.
Further, the mountain retaining end member 20 is installed such that the front surface of the vertical wall 21 of the mountain retaining end member 20 is brought into contact with the outer side surface of the vertical wall 11 of the pair of mountain retaining members 10.

Next, as shown in FIG. 5, the width changing member 50 is installed such that the outer surface of the width changing member 50 abuts against the back surface of the one mountain retaining member 10.
At this time, the width changing member 50 is installed so that the main body plate portion 51 faces the side wall at the bent portion of the excavation groove.
Further, the main body plate portion 51 and the lateral wall 13 of the mountain retaining member 10 are connected by the auxiliary plate portion 52. When assembling the auxiliary plate portion 52, the fastening member 53 is fastened in a direction from the inside to the outside in the extending direction of the excavation groove.

Next, as shown in FIG. 6, a pair of mountain retaining members 10 are installed so as to be arranged along the extending direction of the excavation trench.
At this time, one mountain retaining member 10 is connected to the width changing member 50, and the other mountain retaining member 10 is connected to the adjacent mountain retaining member 10.
More specifically, the fastening member 53 is fastened in a state where the lateral wall 13 of the one mountain retaining member 10 and the front surface of the main body plate portion 51 are in contact with each other. Further, the fastening member 53 is fastened in a state where the lateral wall 13 of the other retaining member 10 and the lateral wall 13 of the adjacent retaining member 10 are in contact with each other.

Next, as shown in FIG. 7, the receiving girders 30 are placed on the bottom wall 12 of the long fastening member 10 having the full length in the first row and on the bottom wall 12 of the long fastening member 10 having the full length in the second row. I do.
At this time, in the extending direction of the excavation groove, the receiving girder 30 is sandwiched between the lateral wall 13 of the long-length retaining member 10 in the first row and the lateral wall 13 of the long-length retaining member 10 in the second row. Is placed.

Next, as shown in FIG. 8, two lining plates 40 are placed on the upper surfaces of the mountain retaining end member 20 and the receiving girder 30 so as to be arranged in the width direction of the excavation groove.
At this time, one end of the lining plate 40 is placed on the pedestal portion 24 of the mountain retaining end member 20, and the other end of the lining plate 40 is placed on the girder 30. In particular, when the lining plate 40 is placed on the receiving girder 30, the other end of the lining plate 40 is configured not to protrude beyond the center line of the receiving girder 30 in the lateral direction.

Next, as shown in FIG. 9, a mountain end member 20 is installed on the bottom wall 12 of each of the pair of mountain members 10 at the end of the excavation groove in the extension direction.
At this time, the mountain retaining end member 20 is installed so that the vertical wall 21 faces the side wall at the end of the excavation groove in the extending direction.

Finally, as shown in FIG. 10, three lining plates 40 are placed on the pedestal portion 24 of the mountain retaining end member 20 and on the upper surfaces of the receiving girders 30 installed immediately before.
After the lining plate 40 is placed, a gap is formed between the lining plate 40 and the width changing member 50, so that the gap is filled with earth and sand.

After the installation of the last lining plate 40 is completed, earth and sand or the like is filled in a gap between the side wall of the excavation groove and the mountain retaining end member 20 and a gap between the side wall of the excavation groove and the mountain retaining end member 20. Fill and fill each gap.
When the above steps are completed, all steps of the road lining work are completed.
That is, the mountain retaining member 10 is constructed from the start end to the end of the excavation groove in the extending direction, and the opening of the excavation groove is closed by the lining plate 40.

<Embodiment of road lining unit in vertical installation method>
By using the road surface lining unit 1 of the present embodiment, a road surface lining structure can be constructed even for an excavation groove having a complicated bent portion as shown in FIGS. 11A and 11B, for example.
Specifically, as shown in FIG. 11A, a total of six mountain retaining members 10 are installed on each side wall of the excavation groove so as to be arranged along the extending direction of the excavation groove on both side walls in the width direction of the excavation groove. A total of two mountain retaining end members 20 are provided, one each for the start and end side walls in the exit direction.
In addition, by installing a total of two receiving girders 30 at an intermediate position in the extension direction of the excavation groove, and installing a total of two width changing members 50 at the bent portion of the excavation groove, the lining plate 40 is mounted on the road surface. A road surface lining structure can be constructed by a vertical installation method in which a total of eight rows are arranged in three rows along the traveling direction.
Similarly, a road surface lining structure by a vertical installation method as shown in FIG. 11B can be constructed.

<Embodiment of road surface lining unit in horizontal placing method>
By using the road surface lining unit 100 of the second embodiment, for example, as shown in FIGS. 12A and 12B, it is possible to construct a road surface lining structure by a horizontal placing method.
In the case of the horizontal placing method, as shown in FIGS. 12A and 12B, the road surface lining unit 100 is a mountain retaining member arranged on both side walls in the width direction of the excavation groove so as to be arranged along the extending direction of the excavation groove. 110, a mountain retaining end plate 120 disposed on the start and end side walls in the extending direction of the excavation groove, and a lining plate 40 mounted on the overhanging portion 111 provided on the mountain retaining member 110. (For more details, see JP-A-2006-14297).
Further, the road surface lining unit 100 includes a width changing member 50 provided on a side wall of the bent portion of the excavation groove, and connecting the ends of the mountain retaining members 110 arranged at positions sandwiching the bent portion. I have.

In the above-described configuration, as shown in FIG. 12A, a total of six mountain retaining members 110 are installed three by three on both side walls in the width direction of the digging groove so as to be arranged along the extending direction of the digging groove, and the digging groove extends. A total of two mountain retaining end plates 120 are provided for the start and end side walls in the direction.
In addition, by installing a total of two width changing members 50 at the bent portion of the excavation groove, a total of nine lining plates 40 are arranged in nine rows along a direction orthogonal to the traveling direction of the road surface, and a total of nine lining plates are arranged. Road lining structure can be constructed.
Similarly, a road surface lining structure by a horizontal placing method as shown in FIG. 12B can be constructed.

<Other embodiments>
In the above embodiment, as shown in FIGS. 1 and 2, the width changing member 50 is used in a road surface lining structure by a lining plate vertical placing method, but is not particularly limited. As shown in (1), it can be commonly used in a road surface lining structure by a lining plate horizontal placing method.

  Further, in the above embodiment, as shown in FIG. 5, the width changing member 50 has the main body plate portion 51 and the auxiliary plate portion 52 as separate bodies, but is not particularly limited. The member 51 and the auxiliary plate portion 52 may be integrated.

  Further, in the above embodiment, as shown in FIG. 5, the width changing member 50 is fixed to the mountain retaining member 10 by being fastened with a fastening member, but is not particularly limited. For example, it may be fixed by known fixing means.

In the present embodiment, mainly, the road surface lining unit according to the present invention and the road surface lining method using the road surface lining unit have been described.
However, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the gist of the present invention, and the present invention naturally includes equivalents thereof.
In particular, the shape, arrangement, and configuration of the width changing member 50 described in the above embodiment are merely examples, and do not limit the present invention.

1,100 (for width change) Road lining unit 2 Sheet pile 3 Safety fence 10,110 Mountain retaining member 10a First mountain retaining member 10b Second mountain retaining member 11 Vertical wall 12 Bottom wall 13 Side wall 13a Fastening hole 14 Reinforcement part 15 Fence fixing part Reference Signs List 20 mountain retaining end member 21 vertical wall 22 bottom wall 23 reinforcing portion 24 pedestal portion 30 receiving beam 40 lining plate 50 width changing member 51 main body plate portion 51a fastening hole 52 auxiliary plate portion 52a one end portion 52b other end portion 53 fastening member 111 Overhang part 120 Mountain retaining end plate A Drilling groove A1 Pavement layer A2 Soil layer B Buried pipe

Claims (8)

A width changing road surface lining unit used for a road surface lining operation of a construction performed by forming an excavation groove having a bent portion in a width direction of the road surface with respect to the road surface,
A first mountain retaining member and a second mountain retaining member which are respectively arranged along the extending direction of the excavation groove in lateral portions of the excavation groove in the width direction, and are located at positions sandwiching a bent portion of the excavation groove,
A width changing member that is provided on a side portion of the bent portion of the excavation groove, extends along the width direction of the excavation groove, and connects both ends of the first mountain retaining member and the second mountain retaining member. Width changing road surface lining unit, comprising: A plurality of mountain retaining members including the first mountain retaining member and the second mountain retaining member,
2. The width changing device according to claim 1, wherein the plurality of retaining members are arranged such that a plurality of the retaining members are arranged along the extending direction of the excavation groove on both side portions in the width direction of the excavation groove. Road lining unit. The mountain retaining member is a member that is elongated in an extending direction of the excavation groove,
A vertical wall arranged along a side portion of the excavation trench,
A bottom wall extending from the lower end portion of the vertical wall toward the center in the width direction of the excavation groove,
A lateral wall provided at an end portion in the extension direction of the mountain retaining member, and disposed at a position in contact with both the vertical wall and the bottom wall,
The width changing road surface lining unit according to claim 2, wherein the width changing member connects outer side surfaces of the lateral walls of both the first mountain retaining member and the second mountain retaining member. The width changing member has a main body plate portion arranged along a side portion of the bent portion of the excavation groove,
The said main-body plate part is arrange | positioned so that it may contact | abut along the up-down direction with respect to the said vertical wall of both the said 1st fastening member and the said 2nd fastening member, The claim 3 characterized by the above-mentioned. Road lining unit for changing width. The width changing member has an auxiliary plate portion extending from the main body plate portion so as to project toward the center in the width direction of the excavation groove,
The auxiliary plate portion has one end portion attached to the main body plate portion, and another end portion attached to one of the first mountain retaining member and the second mountain retaining member. The road surface lining unit for width change according to claim 4. When the first mountain retaining member is located outside the second mountain retaining member in the width direction of the excavation groove,
The main body plate portion is attached so as to contact an outer surface of the lateral wall of the first mountain retaining member,
The width changing road surface lining unit according to claim 5, wherein the other end of the auxiliary plate portion is attached so as to abut on an outer surface of the lateral wall of the second mountain retaining member. The main body plate portion is a connection plate,
The width changing road surface lining unit according to claim 5 or 6, wherein the auxiliary plate portion is an auxiliary plate provided separately from the connection plate.   The width change member according to any one of claims 1 to 7, wherein the width change member is fastened to both ends of the first mountain stay member and the second mountain stay member by a fastening member. Road surface lining unit.

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