JP4767191B2 - Mountain retaining member, road surface lining structure including the same, and road surface lining method - Google Patents

Description

  The present invention relates to a mountain retaining member, a road surface covering structure and a road surface covering method including the same, and in particular, used for road surface covering work in burial work where a sewer pipe is buried by excavating a groove in a road or the like. The present invention relates to a mountain retaining member, a road surface covering structure provided with the same, and a road surface covering method.

Conventionally, in construction where new sewer pipes, etc. are buried in the road or on the ground, or in which existing sewer pipes are repaired, excavation grooves are excavated in the road surface and excavation work is performed after excavation work. A road surface lining method is known in which the opening of a groove is covered with a lining plate (see, for example, Patent Document 1).
Hereinafter, a conventional road surface lining method will be described with reference to FIGS. 10 and 11.

In this road surface covering method, the pavement layer A and the soil layer B are first excavated to form the excavation groove C, and the back surface of the vertical wall 113 is formed on the vertical groove wall formed facing the width direction of the excavation groove C. The mountain retaining members 101 having an L-shaped cross section are arranged so as to contact each other. Next, the receiving girder 103 is installed so that both ends abut against the inner surface of the vertical wall 113 of the opposing mountain retaining member 101. In this state, the excavation groove C is further excavated, and sheet piles 107 are embedded on both side walls, and installation work such as piping is performed.
At night, when construction is not performed, a lining plate 105 is placed on the receiving girder 103 to cover the excavation groove C so that pedestrians, vehicles, and the like can pass.

  In this manner, the vertical groove wall of the excavation groove C abuts the vertical wall 113 of the retaining member 101, and the receiving girder 103 is horizontally supported between the opposing retaining members 101, so that the receiving girder 103 is supported. It functions as a work, and it is possible to support the load due to the earth pressure from the ground or the passage of a vehicle or the like by the mountain retaining member 101 and the receiving girder 103. For this reason, it is possible to efficiently prevent the vertical groove wall from collapsing due to the flow of rainwater or the passage of a vehicle or the like with a simple configuration. In this way, since the vertical groove wall is unlikely to collapse, the installed lining plate 105 is unlikely to move or shift, and the lining plates 105 can be arranged densely. As a result, it is difficult for traffic obstacles or the like due to the displacement of the lining plates 105 or the gaps between the lining plates 105 to occur, and it is possible for pedestrians, vehicles, etc. to pass safely over the lining plates 105. Become.

Japanese Patent No. 3120150 (Claim 1, Claim 2, Paragraphs 0006 to 0014, FIGS. 1 to 3)

In this road surface lining method, since the earth pressure and the load applied to the receiving girder 103 differ depending on the width of the lining and the strength of the ground, the receiving girder 103 of a size having sufficient strength to support this is provided. It is necessary to select and use.
For example, when the lining width is 4.5 m, the receiving girder 103 having a lateral width of 4.5 m and a height of 350 mm is used. However, when the lining width is 6.0 m, the receiving girder is received more than when the lining width is 4.5 m. Since the earth pressure and the load applied to the girder 103 are large, it is necessary to use a larger girder 103, specifically, a girder 103 having a width of 6.0 m and a height of 400 mm.
Since the lining plate 105 has a constant thickness (for example, a thickness of 200 mm) regardless of the lining width, the depth of the excavation groove C depends on the height of the receiving beam 103 and the lining plate 105. It is the total of the height.

  In this manner, the size of the receiving girder 103 is determined according to conditions such as the lining width, and the height of the vertical groove wall of the excavation groove C (height d in FIG. 11) according to the height of the receiving girder 103. Is determined. And according to the depth of this excavation groove C, the height of the retaining member 101 used is determined.

  Further, the excavation accuracy is poor when the excavation groove C is formed, and the height of the vertical groove wall of the excavation groove C (height d in FIG. 11) is equal to the height of the mountain retaining member 101 (height h in the figure). May be different. However, since the height h of the vertical wall of the conventional mountain retaining member 101 is constant, the top end surface of the vertical wall 113 coincides with the road surface when the height d of the vertical groove wall is different from the height h of the vertical wall. There was an inconvenience.

For example, when the height h of the vertical wall is smaller than the height d of the vertical groove wall, the top end surface of the vertical wall 113 is located below the road surface, so that the vertical wall is between the pavement layer A and the lining plate 105. A gap corresponding to the thickness of the wall 113 is generated. For this reason, in the part located above the top end surface of the vertical wall 113 among the vertical groove walls, there is an inconvenience that the vehicle or the like easily collapses as it passes through the road surface.
On the other hand, when the height h of the vertical wall is larger than the height d of the vertical groove wall, the top end portion of the vertical wall 113 protrudes upward from the road surface, which obstructs the passage of pedestrians and the like passing on the road surface. Become.

Thus, in the road surface covering work, the height of the vertical groove wall of the excavation groove C is not necessarily constant, and may vary depending on the covering width and excavation accuracy.
In order to deal with such vertical groove walls having different heights, conventionally, it has been necessary to prepare the retaining members 101 of different sizes in advance according to the height of the vertical groove wall of the excavation groove C.
However, in order to manufacture a plurality of types of mountain retaining members having different vertical wall heights, it is much more expensive to manufacture than one type of mountain retaining members, and a plurality of types of mountain retaining members are stored. Management space is also increased due to the space required. For this reason, there has been a disadvantage that the cost required for road surface lining increases.

  An object of the present invention is not to prepare a plurality of types of mountain retaining members having different heights in advance, and a mountain retaining member capable of accommodating excavation grooves having different depths with a single mountain retaining member and a road surface including the same. The object is to provide a lining structure and a road surface lining method.

  According to the mountain retaining member of claim 1, the problem is a mountain retaining member used for road surface lining work of construction performed by forming excavation grooves on the road surface, the horizontal wall extending in the horizontal direction and one end of the horizontal wall. An L-shaped member having a vertical wall extending vertically or substantially vertically from the upper end surface of the L-shaped member is located above the top end of the vertical wall, and the height of the upper end surface along the height direction of the vertical wall. This is solved by providing a movable member whose position can be changed and a movement preventing member for preventing the movable member from moving downward.

  Thus, in the mountain retaining member of the present invention, the upper end surface of the movable member is positioned above the top end of the vertical wall, and the height position of the upper end surface is changed and the movable member is moved downward. Since it is blocked, the upper end surface of the movable member can be adjusted to a different height position. For this reason, it becomes possible to adjust the height position of the movable member in accordance with the height of the vertical groove wall of the excavation groove (that is, the depth of the excavation groove) and install the mountain retaining member in the excavation groove.

  The movement blocking member includes a protrusion protruding from one of the vertical wall and the movable member, and is formed along the height direction of the other of the vertical wall and the movable member. And it is preferable that the guide hole which can penetrate the said projection part is formed.

  Thus, one of the L-shaped member and the movable member is formed with a guide hole along its height direction. For this reason, the height position of the upper end surface of the movable member can be adjusted by moving the protruding portion protruding from the other member up and down along the guide hole in the height direction. Further, since the protrusion is inserted through the guide hole, the movable member is unlikely to fall off the L-shaped member when the side surface of the protrusion is caught by the inner wall surface of the guide hole.

  In this case, it is preferable that the guide hole is a long hole penetrating the longitudinal direction along the vertical direction.

With this configuration, the protrusion can be inserted into the elongated hole and moved along the longitudinal direction, and the upper end surface of the movable member can be arbitrarily fixed by fixing the protrusion at an arbitrary height position. It can be the height position.
For this reason, there is no restriction | limiting in the height position which can be changed if it is in the height width in which the long hole was formed, For this reason, the height position of the upper end surface of a movable member can be set finely.

  Alternatively, it is preferable that the guide hole is a plurality of through holes provided so that the lower end portions are at different height positions.

  In this case, the height of the upper end surface of the movable member is set to the height of the lower end of the through hole by inserting the protrusion into one of the plurality of through holes and placing the protrusion on the lower end surface of the through hole. The height position can correspond to the height position. Furthermore, since the protrusion is placed on the lower end of the through hole, the movable member is unlikely to sink downward. Therefore, a gap is hardly generated between the vertical groove wall of the excavation groove and the mountain retaining member, and the road surface is not easily collapsed.

  Furthermore, the guide hole is formed continuously with the long hole portion extending in the longitudinal direction along the vertical direction and the long hole portion in a direction crossing the longitudinal direction of the long hole portion. It is preferable that the plurality of short hole portions are configured such that the lower end portions of the plurality of short hole portions are at different height positions.

  With this configuration, the protrusion can be inserted into the elongated hole and moved along the longitudinal direction, and the upper end surface of the movable member can be arbitrarily fixed by fixing the protrusion at an arbitrary height position. It can be the height position. In addition, the movable member is unlikely to sink downward by placing the protrusion on the lower end of the short hole. Therefore, a gap is hardly generated between the vertical groove wall of the excavation groove and the mountain retaining member, and the road surface is not easily collapsed.

  In addition, it is preferable that the protrusion is configured by a bolt having a thread groove formed therein, and the movable member is held at a narrow pressure between a nut that is screwed to the bolt and the vertical wall.

Since it is comprised in this way, a movable member can be fixed to a vertical wall by a simple operation | work by screwing a nut on a volt | bolt using a wrench. Further, by weakening the tightening force of the nut, it is possible to release the fixed state of the movable member by a simple operation and to make it movable.
Furthermore, since the nut is screwed onto the bolt, even if the movable member tries to drop off from the L-shaped member, it comes into contact with the nut and is prevented from falling off. Therefore, it is possible to reduce the labor required for the road surface covering work and to efficiently prevent the movable member from falling off.

  The movable member further includes a covering member provided on the upper end surface side and having an end protruding substantially horizontally toward the side opposite to the extending direction of the lateral wall, and the lower surface of the covering member is It is preferable that the mountain retaining member abuts on the road surface when installed in the excavation groove.

  Thus, by providing the covering member, when the mountain retaining member is installed in the excavation groove, the upper part of the gap between the vertical groove wall and the wall surface on the back side of the mountain retaining member is covered, and the gap is exposed to the outside. It will not be exposed. Furthermore, since the lower surface of the covering member abuts on the road surface, even if the movable member attempts to sink, the covering member and the road surface interfere with each other to prevent the movable member from sinking. Accordingly, the appearance of the road surface can be made beautiful, and a gap between the excavation groove and the mountain retaining member due to the sinking of the movable member is hardly generated, and the road surface is not easily collapsed.

  Moreover, it is preferable that the said covering member has a taper surface so that it may become thin as it goes to the said edge part.

  By providing the taper surface in this way, a steep step is hardly generated between the road surface and the upper end portion of the covering member. Therefore, traffic obstacles such as pedestrians passing on the road surface are unlikely to occur, and safe traffic can be ensured.

  In addition, a vertical surface formed in a direction perpendicular to the lateral wall is formed on the side of the covering member on which the lateral wall extends, and the vertical surface includes the longitudinal wall of the L-shaped member and the movable member. It is preferable that the flat surface constituting the member is on the same plane as the flat surface located on the outermost side in the extending direction of the lateral wall.

  In this way, a vertical surface is formed on the covering member, and this vertical surface is a plane located on the outermost side in the extending direction of the horizontal wall among the vertical walls of the L-shaped member or the movable member (i.e. The end face of the receiving beam abuts the surface). For this reason, when the lining plate is installed, the side surface and the vertical surface of the lining plate come into contact with each other, and no gap is generated between them. Therefore, the inconvenience that articles etc. fall into this gap is less likely to occur.

  The above-described problem is a road surface covering structure having any one of the above-described mountain retaining members, wherein the height position of the movable member is adjusted according to the height of the vertical groove wall of the excavation groove, and the excavation groove A pair of mountain retaining members installed so that the back surfaces thereof are in contact with the opposing vertical groove walls, and end surfaces on one end side and the other end side are in contact with inner surfaces of the pair of mountain retaining members, respectively. This is solved by providing a receiving girder placed on the upper surface of the horizontal wall and a lining plate installed on the receiving girder so that the upper surface is substantially flush with the road surface.

  Thus, since the height position of the movable member can be adjusted according to the height of the vertical groove wall of the excavation groove, road surface lining is performed using a single mountain retaining member regardless of the height of the vertical groove wall. be able to. In addition, it is difficult to cause a road surface collapse or a traffic obstacle due to a gap between the mountain retaining member and the longitudinal groove wall or a part of the mountain retaining member protruding from the road surface. Therefore, safe traffic for pedestrians and the like can be ensured.

  Moreover, the said subject is the road surface covering method performed using one of the said mountain retaining members, Comprising: The excavation process which forms the said excavation groove which has a vertical groove wall and a horizontal groove wall in the said road surface, The said vertical groove wall The height position of the movable member of the mountain retaining member is adjusted according to the height of the mountain retaining member, and the pair of mountain retaining members are installed so that the wall surface on the back side contacts the vertical groove wall facing the excavation groove A mountain retaining member installation step, a receiving beam installation step of placing a beam support on the upper surface of the lateral wall so that both end surfaces abut against the inner wall surface of each of the pair of mountain retaining members, and the upper surface is the road surface. This is solved by performing a lining plate installation step of installing a lining plate on the receiving girder so as to be substantially flush.

  Thus, since the height position of the movable member can be adjusted according to the height of the vertical groove wall of the excavation groove, road surface lining is performed using a single mountain retaining member regardless of the height of the vertical groove wall. be able to. In addition, it is difficult to cause a road surface collapse or a traffic obstacle due to a gap between the mountain retaining member and the longitudinal groove wall or a part of the mountain retaining member protruding from the road surface. Therefore, safe traffic for pedestrians and the like can be ensured.

Since the mountain retaining member of the present invention can adjust the height position of the movable member in accordance with the depth of the excavation groove, even a single mountain retaining member can have different depths. It becomes possible to respond.
For this reason, it is not necessary to prepare a plurality of types of mountain retaining members having different heights as in the conventional construction method, and the costs for manufacturing, storage, transportation, etc. can be eliminated, and the road surface covering is compared with the conventional construction method. Costs and labor required for the work can be greatly reduced.
Moreover, since the height of the upper end surface of the movable member can be made to coincide with the height of the road surface, there is no gap on the road surface, and the mountain retaining member does not protrude above the road surface. For this reason, it is difficult to cause a failure of a groove wall due to a gap or a traffic obstacle due to a mountain retaining member protruding from the road surface, and a road surface lining that has a good road surface and can be safely passed on the road surface. It can be realized.

  Below, the mountain retaining member of this invention, the road surface covering structure, and the road surface covering method are demonstrated. It should be noted that the materials, instruments, conditions, and the like described below do not limit the present invention, and various modifications can be made within the spirit of the present invention.

FIGS. 1-9 is a figure explaining the mountain retaining member and road surface covering member which concern on one Embodiment of this invention, FIG. 1 is a perspective view of the mountain retaining member which concerns on 1st Embodiment, FIG. 2 is a mountain The perspective view which isolate | separates and shows the main elements which comprise a retaining member, FIG. 3 is the perspective view which looked down at the road after road surface covering from diagonally upward, FIG. 4 is sectional drawing which shows the longitudinal cross-section of the road after road surface covering FIG. 5 is an enlarged view of a region surrounded by a dotted circle in FIG. 4, and FIG. 6 is a cross-sectional view showing a state in which a mountain retaining member is installed on a vertical groove wall having a different height.
7 is an enlarged front view of an L-shaped member constituting a mountain retaining member according to another embodiment, FIG. 8 is a perspective view of the mountain retaining member according to another embodiment, and FIG. 9 is a mountain retaining according to another embodiment. It is sectional drawing which shows the longitudinal cross-section of the road which went to the road surface covering with the member.

  As shown in FIG. 1, the mountain retaining member 1 includes an L-shaped member 11 and a movable member 20 as main components. In the mountain retaining member 1 of the present invention, the position of the upper end surface 24a of the movable member 20 is located above the top end 13a of the vertical wall 13 constituting the L-shaped member 11, and the position of the upper end surface 24a is different. The feature is that it can be changed to the height position.

The L-shaped member 11 includes a flat horizontal wall 12 and a flat vertical wall 13 extending perpendicularly to the lateral direction of the horizontal wall 12 from a side end of the horizontal wall 12 and has a vertical cross-sectional shape. It is an L-shaped member.
Both the horizontal wall 12 and the vertical wall 13 of this embodiment are formed of a rigid iron plate. The L-shaped member 11 has a vertical wall such that one plate surface of the vertical walls 13 (a surface facing the X direction in FIG. 1, hereinafter referred to as a rear surface) is flush with a side end surface in the longitudinal direction of the horizontal wall 12. It is manufactured by joining the lower end surface of 13 to the end side of the plate surface of the lateral wall 12 (the surface facing the Z direction in FIG. 1; hereinafter referred to as the upper surface) and welding them together.
In addition, a plate surface opposite to the upper surface of the horizontal wall 12 (a surface facing the direction opposite to the Z direction in FIG. 1, in a position not visible in this figure) is a bottom surface, and a plate of the vertical wall 13 opposite to the back surface. The surface (the surface facing the direction opposite to the X direction in FIG. 1) is referred to as the inner surface.

Note that the material of the L-shaped member 11 is not limited to iron, and may be other metal materials such as steel, reinforced plastic, ceramics, and the like.
In addition, the L-shaped member 11 is not limited to the one in which the two members are joined as described above, and may be formed by integrally forming the horizontal wall 12 and the vertical wall 13. By doing in this way, since the fracture | rupture of the junction which may arise when both are joined and manufactured by welding etc. does not generate | occur | produce, it is preferable.

  Two long holes 13b are formed in the vertical wall 13 along the height direction. The long hole 13b of the present embodiment is provided at a position where the vertical wall 13 is roughly divided into three equal parts in the longitudinal direction. The long hole 13b is provided so that the longitudinal direction thereof is parallel to the height direction of the vertical wall 13, and the bolt 22 can be inserted therethrough. In the present embodiment, the long hole 13b is a vertically long hole whose upper end and lower end are both semicircular and whose lateral width in the short direction is substantially constant. The long hole 13b corresponds to the guide hole of the present invention, and has a role of guiding when the movable member 20 is moved up and down.

  In addition, although the long hole 13b of this embodiment is provided so that the longitudinal direction may become parallel to the height direction of the vertical wall 13, you may incline a little with respect to the height direction. In this case, when the movable member 20 is moved up and down, the movable member 20 can be slid obliquely along the inner wall of the long hole 13b. Can be reduced.

  Reinforcing plates 14 are joined to a total of three locations near the center in the longitudinal direction of the L-shaped member 11 and the ends thereof, respectively. The reinforcing plate 14 is a member that supports the vertical wall 13 from the inner surface side and supports the earth pressure that the vertical wall 13 receives from the natural ground. The reinforcing plate 14 of the present embodiment is a trapezoidal member having a right-angled portion formed of a rigid material such as an iron plate, and the end surface on one side constituting the right-angled portion is the upper surface of the horizontal wall 12 and the end surface on the other side. Is in contact with the inner surface of the vertical wall 13 and fixed by welding or the like.

The two reinforcing plates 14 provided on both ends of the L-shaped member 11 in the longitudinal direction of the reinforcing plate 14 are perforated. The drilling is used to hook a hanging wire of the crane when the mountain retaining member 1 is installed in the excavation groove using a crane or the like.
The number and positions of the reinforcing plates 14 are not limited to the above-described embodiment, and can be changed as appropriate in consideration of the earth pressure applied to the mountain retaining member 1.

  Connection plates 15 are joined to both ends of the L-shaped member 11 in the longitudinal direction. The connection plate 15 is a member for connecting adjacent mountain retaining members 1. The connection plate 15 of the present embodiment is a trapezoidal member having a right-angled portion formed of a rigid material such as an iron plate, like the reinforcing plate 14 described above, and an end surface on one side constituting the right-angled portion is an L-shaped member. 11 is fixed to the upper surface of the horizontal wall 12 by bringing the end face on the other side into contact with the inner surface of the vertical wall 13. For this reason, the connection plate 15 also has a function as a reinforcing member that supports earth pressure.

  A plurality of connecting holes are formed in the connecting plate 15. The connection hole can be inserted with a bolt (not shown), and is used for connecting adjacent mountain retaining members 1 using a nut (not shown).

  Fence fixing brackets 16 are joined to two locations on the inner surface of the vertical wall 13. The fence fixing bracket 16 is a member for installing a safety fence 6 described later. The fence fixing bracket 16 has an angle with a V-shaped cross section, and is fixed to the vertical wall 13 by fixing both V-shaped leg sides to the inner surface of the vertical wall 13 by welding or the like. Triangular cylindrical openings are formed above and below the fence fixing bracket 16 fixed to the vertical wall 13, and the safety fence 6 can be installed by inserting the vertical struts of the safety fence 6 into the cylindrical openings.

  The long hole 13b, the reinforcing plate 14, the connecting plate 15, and the fence fixing bracket 16 are provided at positions in the vertical wall 13 that do not overlap each other.

Next, the movable member 20 will be described. The movable member 20 includes a flat movable plate 21, a bolt 22 projecting on one plane of the movable plate 21, and a covering member 24 attached to the upper end surface of the movable plate 21 as main components. I have.
The movable plate 21 has a rigid flat plate shape, and is a member that is movable in the vertical direction while being in contact with the back side of the vertical wall 13. The movable plate 21 serves to support the earth pressure by directly contacting the vertical groove wall of the excavation groove.

  As shown in FIG. 2, bolts 22 are provided in two positions on the movable plate 21 on the plate surface facing the back surface of the vertical wall 13 in a vertical direction. The bolts 22 are respectively provided at positions corresponding to the long holes 13 b when the movable plate 21 is brought into contact with the back surface of the vertical wall 13. The bolt 22 is of a size that can be inserted into the long hole 13b of the vertical wall 13 and that does not catch on the inner wall surface of the long hole 13b even if it is moved up and down along the longitudinal direction of the long hole 13b. A screw groove is formed on the surface of the bolt 22 so that the nut 23 can be screwed. The bolt 22 and the nut 23 correspond to the movement preventing member of the present invention. In particular, the bolt 22 corresponds to the protrusion of the present invention.

In the present embodiment, a known hexagon bolt having a hexagonal screw head is used as the bolt 22. An attachment recess for attaching a screw head of a hexagon bolt is formed on the inner surface of the movable plate 21. The mounting recess of the present embodiment has a rectangular shape in plan view having a lateral width substantially equal to the opposite side dimension of the hexagonal shape of the screw head and a longitudinal width substantially equal to the diagonal dimension. Then, one of the diagonal lines of the screw head is directed in the vertical direction, the screw head is fitted into the mounting recess, and a gap between the inner wall surface of the mounting recess and the screw head is welded, whereby the bolt 22 is attached to the movable plate 21. Is fixed.
Thus, since the screw head of the hexagon bolt is surrounded by the inner side wall of the mounting recess, the bolt 22 is not easily dropped from the mounting recess and is firmly fixed to the movable plate 21.

  The movable plate 21 is fixed to the vertical wall 13 of the L-shaped member 11 by inserting a bolt 22 into the long hole 13 b and screwing it with a nut 23. The nut 23 of this embodiment uses a hexagonal nut whose top view shape is hexagonal. The movable plate 21 has nuts 23 in a state where bolts 22 provided at two locations are respectively inserted into the corresponding long holes 13b of the vertical wall 13 and the inner surface of the movable plate 21 is in contact with the back surface of the vertical wall 13. Is attached to the L-shaped member 11 by being screwed onto the bolt 22. By firmly tightening the nut 23, the movable plate 21 is pressed against the vertical wall 13, and the movable plate 21 does not sink downward or fall off the vertical wall 13. Conversely, by loosening the nut 23, the movable plate 21 can move in the vertical direction along the height direction of the vertical wall 13.

  As shown in FIG. 1, a covering member 24 is attached to the upper end surface of the movable plate 21. The covering member 24 has a role of concealing a gap generated between the vertical groove wall and the covering plate 5 when the mountain retaining member 1, the receiving girder 3 and the covering plate 5 are installed in the excavation groove. Furthermore, the covering member 24 also has a role of preventing the movable plate 21 from sinking downward by being caught on the road surface.

  The covering member 24 of the present embodiment is a member having an L-shaped longitudinal cross-section, and is formed by processing an angle formed of steel or the like into a predetermined shape. The upper end surface 24 a of the covering member 24 constitutes the upper end surface 24 a of the entire movable member 20. The upper end surface 24 a is located above the top end 13 a of the vertical wall 13. The material of the covering member 24 may be another metal material such as aluminum, or a flexible material such as rubber or sponge.

The back side of the movable plate 21 of the covering member 24 protrudes in the horizontal direction (the direction parallel to the short direction of the lateral wall 12) toward the side opposite to the direction in which the lateral wall 12 extends. The protruding portion is formed with a tapered surface 24b so as to become thinner toward the tip. Note that the direction in which the covering member 24 protrudes does not necessarily have to be a horizontal direction, and may be a substantially horizontal direction.
On the other hand, the inner surface side of the movable plate 21 of the covering member 24 protrudes in the horizontal direction toward the direction in which the lateral wall 12 extends, and further, the tip end portion is bent vertically downward to form a vertical surface 24c. . The vertical surface 24 c is located on the same plane as the inner surface of the vertical wall 13.

Next, a road surface covering structure and a road surface covering method using the mountain retaining member 1 of the present invention will be described.
As shown in FIGS. 3 to 6, the road surface covering structure is formed on the inner surface of the vertical retaining wall 1 of the mountain retaining member 1 disposed so as to face the width direction of the excavation groove C and the facing mountain retaining member 1. The receiving girder 3 is provided with both end portions in contact with each other, and the lining plate 5 is placed on the receiving girder 3.
Hereinafter, a road surface covering method for constructing this road surface covering structure will be described.

  As shown in FIG. 3, the ground on which the road surface lining work is performed includes a pavement layer A made of asphalt and the like, and a soil layer B below the pavement layer A. In the road surface lining method, first, the excavation groove C is formed on the road surface. The excavation groove C is a rectangular groove formed by excavating the pavement layer A and the soil layer B, and is partitioned by the vertical groove wall (side surface) and the lateral groove wall (bottom surface). After excavation, the transverse groove wall is compacted by compacting it with a known compactor such as a tamping rammer or a vibrating roller so that it does not sink easily even if a large load is applied to the upper part.

  Next, the mountain retaining members 1 are respectively installed in the excavation grooves C. As shown in FIG. 4, the back surface of the movable plate 21 is brought into contact with the vertical groove wall of the excavation groove C, and the mountain retaining member 1 is placed on the horizontal groove wall of the excavation groove C. And the mountain retaining member 1 is contact | abutted to each of the vertical groove wall facing toward the width direction of the excavation groove C, and it arrange | positions so that a pair of mountain retention member 1 may oppose on both sides of the excavation groove C. In addition, in the figure, in order to explain the gap between the vertical groove wall and the retaining member 1 described later, the gap is shown with a slight gap.

In installing the mountain retaining member 1, the mountain retaining member 1 is first placed on the horizontal groove wall of the excavation groove C, and then the height position of the upper end surface 24a of the movable member 20 is adjusted according to the height of the vertical groove wall d. Do it.
Specifically, as shown in FIGS. 6A to 6C, as the height of the longitudinal groove wall increases as d1, d2, and d3 (where d1 <d2 <d3), the movable member 20 is moved. The upper end surface 24a is slid upward along the elongated hole 13b of the vertical wall 13 so that the height position of the upper end surface 24a is substantially horizontal with the road surface.

The movable member 20 can be slid by loosening the nut 23 and allowing the movable member 20 to move up and down along the height direction of the vertical wall 13. After adjusting the height of the movable member 20 to a desired position, the nut 23 is firmly screwed to the bolt 22, whereby the movable member 20 is narrowed between the vertical wall 13 and the nut 23, and the height thereof is increased. The position is maintained.
In the present embodiment, the height position of the movable member 20 is positioned so that the upper end surface of the movable plate 21 and the road surface are located on the same plane. At this time, the upper end surface 24 a of the covering member 24 is positioned above the road surface by the thickness of the covering member 24.

After adjusting the height position of the movable member 20, the mountain retaining member 1 is pushed into the longitudinal groove wall side, and the back side thereof is brought into contact with the longitudinal groove wall. In this state, as shown in an enlarged view in FIG. 5, the gap between the vertical groove wall of the excavation groove C and the back surface of the movable plate 21 is covered with the covering member 24. Further, since the lower end surface of the protruding end portion side of the covering member 24 abuts on the road surface, a part of the covering member 24 is caught on the road surface and the movable member 20 is prevented from sinking downward. Moreover, since the taper surface 24 b is formed at the protruding end portion, there is no abrupt step between the road surface and the upper end portion of the covering member 24. For this reason, it is difficult for traffic obstacles and the like due to such a steep step to occur, and pedestrians and the like can safely pass on the road surface.
Note that the height position of the movable member 20 may be adjusted after the mountain retaining member 1 is installed in the excavation groove C, but after the height position is adjusted and fixed in advance before installation in the excavation groove C. The mountain retaining member 1 may be installed in the excavation groove C.

Next, as shown in FIG. 3, the receiving girder 3 is disposed between the pair of facing members 1 facing each other. The receiving girder 3 has a role as a support for supporting earth pressure and a load applied to the mountain retaining member 1 from the ground, and also has a role as a base for placing a lining plate 5 described later. Yes.
In the present embodiment, an H-section steel whose cross-sectional shape in the short direction is an H-shape is used as the girder 3. However, the present invention is not limited to this. Further, a plate-shaped steel material may be assembled in a box shape.

The receiving girder 3 has a pair of mountain retaining members 1 disposed facing each other in the groove width direction of the excavation groove C, and both end surfaces in the longitudinal direction of the vertical retaining wall 13 of each mountain retaining member 1. It arrange | positions so that it may be in the state contact | abutted to the inner surface. By being arranged in this way, the receiving girder 3 is orthogonal to the two mountain retaining members 1, so that the support force against the earth pressure applied to the mountain retaining member 1 is maximized.
In the present embodiment, the receiving girders 3 are installed adjacent to the connecting plate 15 at two positions from the longitudinal center of the mountain retaining member 1 rather than the connecting plate 15, but the installation position and the like are limited to this. Not.

Next, the lining plate 5 is placed on the upper surface of the receiving beam 3. The lining board 5 is a member for covering the upper surface of the excavation groove C and allowing pedestrians, vehicles, etc. to pass therethrough for safety and convenience of passage during construction stoppages such as at night. Although the lining board 5 of this embodiment is formed in plate shape with the steel plate which has rigidity, it is not limited to this.
The lining plate 5 is placed on each of the two receiving beams 3 arranged in parallel with one end side and the other end side in the longitudinal direction.

  During construction such as daytime, the lining plate 5 is removed and a safety fence 6 is attached instead. The safety fence 6 has a role of preventing the passersby from falling into the excavation groove C while the excavation groove C is exposed on the road surface. The safety fence 6 is formed in a lattice shape by combining vertical struts and horizontal struts, and the vertical struts are installed through the fence fixing bracket 16 of the mountain retaining member 1.

  As shown in FIG. 4, the upper surface of the lining plate 5 is flush with the upper end surface 24 a of the covering member 24. For this reason, the upper surface of the covering member 24 is lower than the upper end surface 24 a of the covering member 24, or conversely, the covering member 24 protrudes upward from the covering plate 5. There is no occurrence, and it becomes possible for a pedestrian or the like to pass safely over the lining board 5.

  Further, since the vertical surface 24c of the covering member 24 is located on the same plane as the inner surface of the vertical wall 13, the side surface of the covering plate 5 and the vertical surface 24c are in contact with each other when the covering plate 5 is disposed. It touches, or approaches to the state which almost contact | abutted. For this reason, there is no gap between the vertical surface 24 c of the covering member 24 and the side surface of the lining plate 5. Therefore, the inconvenience that articles etc. fall into the gap is less likely to occur.

When construction is performed in the daytime or the like, the lining plate 5 is removed and the excavation groove C is exposed on the road surface. For example, when the buried pipe 8 is installed, first, the lateral groove wall of the excavation groove C is excavated to form a cloth excavation groove. Subsequently, the sheet pile 7 is driven along the side walls on both sides of the cloth digging groove to secure a working space. Between the facing sheet piles 7, a beam (not shown) or the like is horizontally mounted as a supporting work. Next, a buried pipe foundation (not shown) is placed on the bottom surface of the cloth digging groove, and the buried pipe 8 is disposed thereon.
After the buried pipe 8 and the repair work are completed, the sheet pile 7, the girder 3, and the retaining member 1 are sequentially removed while the cloth digging groove and the digging groove C are backfilled.

Next, a mountain retaining member according to another embodiment will be described. FIG. 7 is a front view of an L-shaped member of a mountain retaining member according to another embodiment, and is an enlarged view of a peripheral region of the guide hole.
The guide hole of the mountain retaining member 1 is not limited to the long hole 13b as in the first embodiment, and may have other shapes.
For example, as shown in FIG. 7A, a plurality of through holes 13 c-1 to 13 c-4 may be formed along the height direction of the vertical wall 13. In the present embodiment, four through holes 13c-1 to 13c-4 are formed. Since the lower end portions of the through holes 13c-1 to 13c-4 are at different height positions along the height direction of the vertical wall 13, according to the height of the vertical groove wall of the excavation groove C. By inserting the bolt 22 into any of the through holes 13c-1 to 13c-4, the height position of the movable member 20 can be adjusted. In the present embodiment, four different height positions can be set.

In the present embodiment, the lower outer peripheral surface of the bolt 22 is in contact with the lower end surfaces of the through holes 13c-1 to 13c-4, so that the movable member 20 sinks as in the case of the long hole 13b described above. Hateful. For this reason, it is difficult for the vertical groove wall to collapse due to the movable member 20 sinking, and a stable road surface lining operation can be realized.
The number of through holes 13c-1 to 13c-4 is not limited to the four described above, and can be increased or decreased as appropriate. Further, the shape of the through holes 13c-1 to 13c-4 is not limited to a circular shape, and may be other shapes such as an ellipse, a triangle, a quadrangle, and a polygon.

Further, as shown in FIGS. 7B and 7C, the guide hole has a long hole portion 13d whose longitudinal direction extends along the height direction of the vertical wall 13, and the longitudinal direction of the long hole portion 13d. The shape may have a plurality of short hole portions 13e-1 to 13e-4 that are formed in a direction intersecting with each other and formed continuously with the long hole portion 13d.
In FIG. 7B, each of the plurality of short hole portions 13e-1 to 13e-4 extends in a direction perpendicular to the longitudinal direction of the long hole portion 13d, and each lower end surface has a height position different from each other. It has become.
By providing such a shape, the bolt 22 is inserted into the long hole portion 13d to move the movable member 20 up and down to adjust its height position, and the short hole portion 13e-1 positioned at a desired height. By moving the bolt 22 to 13e-4, the movable member 20 can be set to a different height position, and its sinking can be prevented.

  FIG. 7C shows an example in which the direction in which the longitudinal direction of the short hole portions 13e-1 to 13e-4 intersects the longitudinal direction of the long hole portion 13d is not perpendicular but inclined (45 degrees in this example). It is. In the example of FIG. 7B, when the movable member 20 is displaced laterally, the bolt 22 may be displaced from the short hole and fall to the lower end side of the long hole portion 13d. However, as shown in FIG. Since the longitudinal direction of the short hole portions 13e-1 to 13e-4 is inclined, the bolt 22 is caught on the wall surface of the short hole portions 13e-1 to 13e-4 even if the movable member 20 moves in the lateral direction. It is difficult to drop off at the lower end of the long hole portion 13d.

  7A to 7C, the side end surface of the bolt 22 is engaged with the lower end surfaces of the through holes 13c-1 to 13c-4 and the short hole portions 13e-1 to 13e-4. Therefore, it is not always necessary to screw using the nut 23 as in the first embodiment. However, since it is possible to firmly fix the movable member 20 to the vertical wall 13 of the L-shaped member 11 by screwing using the nut 23, it goes without saying that it is more preferable.

In each embodiment described above, the guide hole is provided in the L-shaped member 11 of the mountain retaining member 1 and the bolt 22 is provided in the movable member 20, but conversely, the bolt is provided in the L-shaped member and the guide hole is provided in the movable member. Forms are also possible.
Below, the mountain retaining member of this embodiment is demonstrated.

As shown in FIG. 8, the mountain retaining member 30 of this embodiment includes an L-shaped member 31 and a movable member 40 as main components, similarly to the mountain retaining member 1 of the first embodiment.
The L-shaped member 31 includes a horizontal wall 32 and a vertical wall 33. The L-shaped member 31 of the present embodiment is composed of the same member as the L-shaped member 11 of the first embodiment, but the guide hole is not formed, and a bolt 34 as a protruding portion is projected. Is different.
On the other hand, the movable member 40 is composed of a flat movable plate 41 and a covering member 44 as in the case of the movable member 20 of the first embodiment, but is not provided with a protrusion, and serves as a guide hole. The difference is that a long hole 41a is formed.
The movable member 40 is in contact with the inner surface of the vertical wall 33 of the L-shaped member 31 (the plate surface on the side where the horizontal wall 32 extends), and the bolt 34 protruding from the vertical wall 33 is inserted into the elongated hole 41 a of the movable member 40. In this state, the nut 35 is fixed to the L-shaped member 31 by screwing. The upper end surface 44 a of the movable member 40 is located above the top end 33 a of the vertical wall 33.

  A covering member 44 is crowned on the upper end surface of the movable plate 41. As shown in FIG. 9, the covering member 44 of the present embodiment is configured by a flat plate-like member protruding to the back side of the movable plate 41, and a tapered surface 44 b is formed on the end side thereof. Further, the inner surface side of the movable plate 41 of the covering member 44 is a vertical surface 44 c and is flush with the inner surface of the movable plate 41. For this reason, when the receiving girder 3 and the lining plate 5 are disposed, the vertical surface 44c of the covering member 44 and the side surface of the lining plate 5 are in contact with each other, and there is almost no gap between them. Inconvenience that articles etc. fall into the gap is less likely to occur.

  In the above-described embodiment, the long hole 41a is used as the guide hole, but it may have another shape as shown in FIG.

It is a perspective view of the mountain retaining member which concerns on 1st Embodiment. It is a perspective view which isolate | separates and shows the main elements which comprise a mountain retaining member. It is the perspective view which looked down at the road after road surface lining from diagonally upward. It is sectional drawing which shows the longitudinal cross-section of the road after a road surface covering. It is an enlarged view of the area | region enclosed with the dotted line circle of FIG. It is sectional drawing which shows the state which installed the mountain retaining member in the vertical groove wall of different height. It is a front view of the L-shaped member which constitutes the mountain retaining member concerning other embodiments. It is a perspective view of the mountain retaining member of other embodiment. It is sectional drawing which shows the longitudinal cross-section of the road which went to the road surface covering with the mountain retaining member of other embodiment. It is sectional drawing which shows the longitudinal cross-section of the road which performed the road surface covering using the conventional mountain retaining member. It is sectional drawing which decomposes | disassembles and shows the road surface covering structure using the conventional mountain retaining member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Yamadome member 3 Girder 5 Covering board 6 Safety fence 7 Sheet pile 8 Embedded pipe 11 L-shaped member 12 Horizontal wall 13 Vertical wall 13a Top end 13b Long hole (guide hole)
13c-1 to 13c-4 Through hole (guide hole)
13d Long hole (guide hole)
13e-1 to 13e-4 Short hole (guide hole)
14 Reinforcing plate 15 Connecting plate 16 Fence fixing bracket 20 Movable member 21 Movable plate 22 Bolt (movement blocking member; protrusion)
23 Nut (movement blocking member)
24 Cover member 24a Upper end surface 24b Tapered surface 24c Vertical surface 30 Yamadome member 31 L-shaped member 32 Horizontal wall 33 Vertical wall 33a Top end 34 Bolt (movement-preventing member; protrusion)
35 Nut (movement blocking member)
40 Movable member 41 Movable plate 41a Long hole (guide hole)
44 Cover member 44a Upper end surface 44b Tapered surface 44c Vertical surface 101 Yamadome member 103 Girder 105 Covering plate 107 Sheet pile 112 Horizontal wall 113 Vertical wall A Pavement layer B Soil layer C Excavation groove

Claims (11)

It is a mountain retaining member used for road surface lining work of construction performed by forming excavation grooves on the road surface,
An L-shaped member having a horizontal wall extending in the horizontal direction and a vertical wall extending vertically or substantially vertically from one end of the horizontal wall;
A movable member whose upper end surface is located above the top end of the vertical wall and capable of changing the height position of the upper end surface along the height direction of the vertical wall;
And a movement preventing member for preventing the movable member from moving downward. The movement prevention member includes a protrusion protruding from one of the vertical wall and the movable member,
2. The mountain stop according to claim 1, wherein a guide hole is formed in the other of the vertical wall and the movable member along the height direction thereof and through which the protrusion can be inserted. Element.   The mountain guide member according to claim 2, wherein the guide hole is a long hole penetrating the longitudinal direction along the vertical direction.   The mountain guide member according to claim 2, wherein the guide hole is a plurality of through holes provided such that the lower end portions thereof have different height positions. The guide hole has a long hole portion penetrating the longitudinal direction along a vertical direction, and a plurality of short holes formed continuously with the long hole portion in a direction intersecting the longitudinal direction of the long hole portion. A hole, and
The mountain retaining member according to claim 2, wherein lower end portions of the plurality of short hole portions are at different height positions. The protrusion is composed of a bolt with a thread groove formed therein,
The mountain retaining member according to any one of claims 1 to 5, wherein the movable member is held at a narrow pressure between a nut that is screwed to the bolt and the vertical wall. The movable member further includes a covering member that is provided on the upper end surface side and that protrudes substantially horizontally toward the side opposite to the direction in which the lateral wall extends,
The lower surface of the said covering member contacts the said road surface when the said mountain retaining member is installed in the said excavation groove, The mountain retaining member of any one of Claims 1-6 characterized by the above-mentioned.   The said covering member has a taper surface so that it may become thin as it goes to the said edge part, The mountain retaining member of Claim 7 characterized by the above-mentioned. A vertical surface formed in a direction perpendicular to the lateral wall is formed on the side of the covering member where the lateral wall extends,
The vertical plane is on the same plane as a plane located on the outermost side in the extending direction of the lateral wall among the planes constituting the vertical wall and the movable member of the L-shaped member. The mountain retaining member according to claim 7 or 8. A road surface lining structure having the mountain retaining member according to any one of claims 1 to 9,
The height position of the movable member is adjusted in accordance with the height of the vertical groove wall of the excavation groove, and a pair of the above-described ones are installed so that the back surface comes into contact with the vertical groove wall facing the excavation groove Yamadome member,
A receiving girder placed on the upper surface of the lateral wall so that the end surfaces on one end side and the other end side abut on the inner surfaces of the pair of mountain retaining members,
A road surface lining structure comprising: a lining plate installed on the receiving girder so that an upper surface is substantially flush with the road surface. It is a road surface covering method performed using the mountain retaining member according to any one of claims 1 to 9,
An excavation step of forming the excavation groove having a longitudinal groove wall and a lateral groove wall on the road surface;
The height position of the movable member of the mountain retaining member is adjusted in accordance with the height of the vertical groove wall, and a pair of the peaks are arranged so that the back wall faces the vertical groove wall facing the excavation groove. A mountain retaining member installation process for installing a retaining member;
A girder installation step of placing a girder on the upper surface of the lateral wall so that both end surfaces abut against the inner wall surface of each of the pair of mountain retaining members;
A road surface lining method comprising: performing a lining plate installation step of installing a lining plate on the receiving girder so that an upper surface is substantially flush with the road surface.

Images