JP2012136930A - Road shoulder protecting block, road shoulder structure and cast-in-place concrete form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a road shoulder protecting block and a road shoulder structure, which are small, light, inexpensive, and excellent in workability, while allowing the use of a same-shape block in an area where the column of a guard rail is erected and the mounting of a slope protecting plate or a weed-proof sheet when required.SOLUTION: A hybrid structure consisting of the road shoulder protecting block 1a which is formed to enable man-power construction by reducing as much as possible the size and weight of a precast concrete block, and a cast-in-place concrete 9 placed inside thereof or the weed-proof sheet 16 provided outside thereof protects a road shoulder in a form depending on the conditions of each site. The road shoulder protecting block 1a and adjacent one are joined together at their longitudinal end faces when laid. The cast-in-place concrete 9 is placed while abutting on the inside face of the laid road shoulder protecting block 1a.

Description

  The present invention relates to a road shoulder protection block used for protecting and forming a road shoulder, a road shoulder structure using the block, and a formwork used when constructing the structure.

  Generally, roads are paved with asphalt, but roads with slopes or cliffs on the sides of the roads, such as roads on embankments, are precast concrete shoulder protection blocks. And is protected with cast-in-place concrete. A conventional road shoulder protection block is a flat block having a certain width dimension, for example, a width dimension of about 500 mm, but a base block called a root winding block for standing a guard rail column provided on the road shoulder is integrated. A block having a notch so as not to interfere with the root block or the root block is also required.

  In addition, as a road shoulder protection block provided on the road on the embankment, a road shoulder protection block integrally provided with a slope protection block for protecting the side slope of the road, and a slope protection block can be connected and integrated at the construction site. Such a shoulder protection block is also provided.

  Further, a road shoulder protection block provided with a jig for locking the upper edge of the weedproof sheet covering the slope in order to prevent weeds from growing on the slope is proposed.

  On the other hand, when protecting the road shoulder with cast-in-place concrete, a concrete panel is placed by placing a low-height panel as a mold on the outer edge of the road shoulder.

  As mentioned above, various kinds of road shoulder protection blocks have been proposed in the past. However, since these are blocks whose basic shape is a flat plate with a width of about 500 mm, they are large and heavy, and are manufactured and constructed. However, there was a problem of high costs. In addition, there are many types of forming molds because blocks with different shapes are necessary for the part where the guard rail columns are erected, or blocks with different width and thickness dimensions are required depending on the condition of the road shoulder. As a result, there is a problem that the cost is further increased, and the storage of the mold and the management of the number of moldings for different shapes become complicated.

  The present invention has been made to solve the problems of the conventional road shoulder protection block as described above, and is small and light, and because the formwork can be small, it is inexpensive and excellent in workability. A shoulder protection block that can use a block of the same shape for the part where the column is erected, and can be attached with a protection plate or a grass protection sheet to protect the slope if necessary, and a shoulder structure using the block It is an issue to provide.

  In order to solve the above-mentioned problems, the present invention has a structure in which the precast concrete block 1 (1a, 1b, 1c) is made as small and light as possible and can be manually constructed. Although only the road shoulder protection block 1 as described above is not sufficient to protect the road shoulder, each road construction block 1a, 1b and the cast-in-place concrete 9 placed on the inside thereof are used for each construction. The road shoulder can be protected with necessary and sufficient strength according to the site. In construction sites that do not require much strength, the road protection block 1c and a concrete plate, a fiber reinforced concrete plate, a synthetic resin plate, a steel plate, etc. for covering the road shoulder on the outside of the road protection plate 1 By the hybrid structure with the sheet material 16, a simple and inexpensive road shoulder protection structure can be obtained.

  The road shoulder structure of the present invention is a road shoulder structure that protects the shoulder of a paved road having a downward slope or cliff on the outer side of the road. A site provided between the roadside protection blocks 1a and 1b which are laid along the road shoulder and elongated in the extending direction of the road, and the inner side surface 3 of the block and the side edge of the road paving layer. It is provided with cast concrete 9. The road shoulder protection blocks 1a and 1b are laid with the inner side surface 3 facing the center of the road and the adjacent ones and the longitudinal end surfaces 11 connected to each other.

  At the place where the guard rail column is erected on the road shoulder, a base block 29 for erected the column is arranged at a position inside the laid road shoulder protection blocks 1a, 1b, and then the site where it is placed The base block 29 and the road shoulder protection blocks 1a and 1b are integrated with the cast concrete 9. As the base block 29, a conventional structure called a root winding block can be used as it is.

  The road shoulder protection blocks 1a and 1b of the present invention used in the road shoulder structure described above are long and thin precast concrete blocks, and have a flat bottom surface 2, an uneven inner surface 3, and an outer surface located on the opposite side of the inner surface. Side 4, flat or hook-shaped inner upper surfaces 5, 5 b, outer upper surface 6 inclined in a direction in which outer surface 4 is lowered, and outer formed at the boundary between inner upper surfaces 5, 5 b and outer upper surface 6. It is a concrete block with a solid cross section provided with a step 7 having a lower upper surface 6 side.

  On the outer upper surface 6 of the road shoulder protection blocks 1a and 1b, a slope protection plate material such as a concrete plate for protecting a slope or a cliff face on the side of the road, a sheet material 16 for grass protection, or the like is stopped. An embedded nut 10 for wearing can also be provided. The embedded nuts 10 are provided so as to be equally spaced between adjacent blocks.

  In the road shoulder structure using the road shoulder protection blocks 1a, 1b, and 1c provided with the embedded nut 10 on the outer upper surface 6 of the block, the upper edge portion is locked to the embedded nut 10 so that the ground on the side of the road. A protective plate or a weedproof sheet 16 covering the surface can be attached. The lower edge of the attached weedproof sheet 16 is fastened with concrete sleepers 18 provided on the ground surface and anchor pins 17 and 19 driven into the ground surface.

  On roads that do not require much strength, the cast-in-place concrete 9 provided between the shoulder protection block and the asphalt pavement 15 of the road is omitted, and the embedded nut 10 provided on the outer upper surface 6 of the road shoulder protection block 1 is placed above. By providing the protective plate and the weedproof sheet 16 that locks the edge and covers the ground surface on the side of the road including the road shoulder, a road shoulder protection structure that can be easily and inexpensively constructed can be obtained. The road shoulder protection block 1c is laid with its longitudinal end connected along the side edge of the road pavement layer, and then the side edge is defined by the inner surface 3 of the block to provide the asphalt pavement 15. . The protection plate or the grass prevention sheet 16 having the upper edge fixed to the road shoulder protection block 1 is developed on a horizontal road shoulder surface on the opposite side of the road shoulder protection block and a downward slope or cliff surface following the road shoulder.

  The road shoulder protection block 1c used in this case includes a flat bottom surface 2, an inner surface 3c joined to a side edge of the road asphalt pavement 15, an outer surface 4 positioned on the opposite side of the inner surface 3c, and a flat inner surface. It is preferable to use a block having an upper surface 5 and an outer upper surface 6c, and a step 7 formed by lowering the outer upper surface formed at the boundary between the inner upper surface 5 and the outer upper surface 6c. An embedded nut 10 for a bolt for fixing the upper edge of the weedproof sheet 16 is embedded. Preferably, a hook 44 for inserting the anchor pin 43 for fixing the block is provided at both longitudinal ends of the block.

  The road shoulder protection block 1 according to the present invention has a length of 800 to 1500 mm and a weight of 15 to 40 kg. Reinforcing bar connection for attaching bolts and studs for ensuring integration with the cast-in-place concrete 9 to the inner side surface 3 of the block 1a, 1b, in which the cast-in-place concrete 9 is provided between the asphalt pavement 15 The embedded nut 12 is preferably embedded.

  Depending on the situation of the road shoulder, there may be a situation in which the road shoulder protection block 1 is arranged at an interval or the road shoulder protection block 1 cannot be used in part. In such a case, construction can be facilitated by using a formwork 30 in which the cast-in-place concrete cast between the shoulder protection blocks 1 having a gap is molded into the same shape as the shoulder protection block 1. it can. That is, as a formwork for the cast-in-place concrete, a molding surface 31 for molding the outer surface 4, the outer upper surface 6 and the step 7 of the road shoulder protection block 1 used in the field, and the substrate 32 for placing the same on the roadbed. And the formwork 30 provided with the anchor pin insertion hole 38 is installed between the road shoulder protection blocks 1 arranged at intervals, and the cast-in-place concrete 40 is placed.

  By adopting the road shoulder structure of the present invention, the road shoulder protection block 1 of precast concrete can be reduced in size and weight, the formwork can be reduced in size, and the weight can be transported and laid by one person. Cost can be greatly reduced. And, when constructing the cast-in-place concrete 9 or asphalt pavement 15, the road shoulder protection block 1 can be used as a substitute for the formwork, so that construction with excellent appearance can be easily performed, and removal of the formwork is not required. Therefore, labor saving can be achieved.

  In addition, the road shoulder structure of the present invention frees the finished size of the road shoulder at the construction site by using on-site concrete, a protective plate or a protective sheet. In other words, the width, thickness, and material of the cast-in-place concrete, protective plate or protective sheet can be set freely according to the situation at the site, and the finished dimensions of the road shoulder can be optimized according to each construction site. .

  According to the road shoulder structure in which on-site concrete is constructed between the road shoulder protection block and the pavement layer, the guard rail struts and root windings can be obtained by making the road shoulder protection block of a narrow size and using the inside of the road protection concrete. There is no need to prepare a specially shaped block that takes into account the block, and the trouble of using multiple types of blocks in the field is eliminated.

  Attachment of the weed protection sheet covering the slope on the side of the road can be arbitrarily selected. Since the mounting jig is embedded in the road shoulder protection block in advance, the weedproof sheet can be easily mounted when necessary, and can be easily replaced when the sheet deteriorates. The attached weedproof sheet can be prevented from rolling up in strong winds by applying concrete sleepers to the lower edge and fixing it with anchor pins.

Front view of the shoulder protection block of the first embodiment Side view of the shoulder protection block of FIG. Plan view of the shoulder protection block of FIG. Sectional view of the road shoulder structure of the first embodiment with a weedproof sheet attached Sectional view of the road shoulder structure of the first embodiment of the portion where the guard rail post is erected Partial plan view of the shoulder structure of FIG. Front view of cast-in-place concrete formwork Plan view of the formwork of FIG. Sectional view of the shoulder structure of the part molded by the formwork of FIG. Front view of the shoulder protection block of the second embodiment Sectional view of the road shoulder structure of the second embodiment with a weedproof sheet attached Front view of the shoulder protection block of the third embodiment Plan view of the shoulder protection block of FIG. Sectional view of the shoulder structure of the third embodiment with a weedproof sheet attached Enlarged longitudinal sectional view of the connecting portion of the road shoulder protection block of the third embodiment

  Hereinafter, a road shoulder protection block according to the present invention and a road shoulder structure using the block will be described with reference to the drawings. FIGS. 1 to 9 show a first embodiment of the present invention, FIGS. 10 and 11 show a second embodiment, and FIGS. 12 to 15 show a third embodiment.

  The road shoulder protection block 1a according to the first embodiment has a flat bottom surface 2, an uneven inner surface 3, an outer surface 4 located on the opposite side, a flat inner upper surface 5, and a direction in which the outer surface 4 side is lowered. It is an elongate precast concrete product provided with the outer upper surface 6 inclined to the inner surface and the step 7 formed in the boundary between the inner upper surface 5 and the outer upper surface 6 in the direction in which the outer upper surface side becomes lower. In the example shown in the figure, the inner surface 3 is formed as an uneven surface by forming a longitudinal groove 8 on the inner surface.

  The preferred size of the block 1a is a width W of 100 to 150 mm, a length L of 800 to 1500 mm, and a height H that is the thickness (about 100 mm) of a general cast-in-place concrete 9 provided on the road shoulder. In the case of such a size, the weight of the block 1a is 30 kg or less, and is a weight that can be carried or laid by one operator.

  When the plurality of embedded nuts 10 are connected to the inclined outer upper surface 6 while adjoining the same shaped blocks and the longitudinal end surfaces 11 to each other, the intervals between the adjacent embedded nuts are equal. Buried. In the example of the figure in which the length dimension L is 1000 mm, a total of three embedded nuts 10 are embedded in the center of the length and at positions separated by a distance a of 333 mm on both sides thereof.

  Further, an embedded nut 12 for reinforcing bar connection is embedded in the bottom surface of the groove 8 on the inner side surface. The reinforcing bar connecting embedded nuts 12 are provided in accordance with the arrangement positions of the longitudinal ends of the block 1a and, if necessary, the reinforcing bars 23 provided on the cast-in-place concrete 9 shown in FIG.

  4 to 6 are views showing a road shoulder structure using the road shoulder protection block 1a shown in FIGS. 1 to 3, wherein 9 is a cast-in-place concrete, 15 is an asphalt pavement layer, 16 is a weedproof sheet, 17 is a U A character-shaped anchor pin, 18 is a concrete sleeper, and 19 is an anchor pin for fixing the concrete sleeper 18.

  Next, the construction procedure of the road shoulder structure of FIG. 4 will be described. After the necessary road foundation is formed on the embankment 20, the road shoulder protection block 1a described with reference to FIGS. In the road shoulder protection block 1a, it is preferable that a full screw (a rod-like screw having a full length threaded, stat) 22 is screwed into the reinforcing nut connecting embedded nut 12 in advance. Next, the cast-in-place concrete 9 is cast with a predetermined width, for example, a width of 500 mm. During this placement, the inner side surface 3 of the road shoulder protection block functions as a formwork for the cast-in-place concrete 9. Then, the asphalt pavement 15 of the part used as the center of a road is performed.

  All the screws 22 screwed into the embedded nuts 12 for reinforcing bar connection are in a state of being embedded in the cast-in-place concrete 9 and serve to ensure the connection between the cast-in-place concrete 9 and the road shoulder protection block 1a. If necessary, the core rebar 23 provided in the cast-in-place concrete 9 is welded to all the screws 22 screwed into the reinforcing bar connecting embedded nut 12.

  In the road shoulder structure in the figure, a weedproof sheet 16 is covered on a slope of a downward slope on the side of the road. The weedproof sheet 16 is attached by adhering the upper edge portion to the outer upper surface 6 of the road shoulder protection block with an adhesive, and fastening with a bolt 13 screwed into the embedded nut 10.

  On the slope, a long and narrow concrete sleeper 18 is arranged in the direction perpendicular to the paper surface of the drawing at the lower edge of the weedproof sheet 16. The concrete sleeper 18 is provided with a through hole for inserting the anchor pin 19. The lower edge of the weedproof sheet 16 with the upper edge fixed to the road shoulder protection block 1a is adhered to the concrete sleeper 18 with an adhesive, and is fixed to the slope together with the concrete sleeper 18 by the anchor pin 19. Further, in the example shown in the figure, the U-shaped anchor pin 17 is used to fix an appropriate portion of the weedproof sheet 16 to the slope 26 to prevent the weedproof sheet 16 from rolling up and fluttering.

  As shown in FIGS. 5 and 6, in the portion where the support 28 of the guard rail 27 is erected on the road shoulder, the root winding block 29 is placed at a position inside the road shoulder protection block 1 a before placing the cast-in-place concrete 9. After that, the cast-in-place concrete 9 is laid. The subsequent construction procedure is the same as the procedure described in FIG. The root winding block 29 is integrated with the road shoulder protection block 1a through the cast-in-place concrete 9.

  When the length of the section protecting the shoulder of the road is not an integral multiple of the length of the shoulder protection block 1a, or when the road is curved with a large curvature, the length of the road and the adjacent shoulder protection block The troublesome work of cutting the block according to the difference in the arrangement angle is required. This troublesome work can be eliminated by using the cast-in-place concrete form 30 shown in FIGS.

  The cast-in-place concrete mold 30 includes an outer surface molding portion 34, an outer upper surface molding portion 36, and a step molding portion 37 that respectively mold surfaces corresponding to the outer surface 4, the outer upper surface 6, and the step 7 of the road shoulder protection block 1a. A face plate 31 and a substrate 32 extending outward from the lower edge of the face plate are provided. The face plate 31 and the substrate 32 are formed by bending a single steel plate, and a reinforcing plate 33 for holding the bent shape is attached by welding. In the illustrated example, four reinforcing plates 33 provided at both ends are provided with bolt holes 35 for inserting bolts for connecting the long ends of the formwork to each other. Is provided.

  Further, the outer upper surface molding portion 36 is provided with a bolt insertion hole 39 for inserting a bolt 42 for fixing the embedded nut 10 at the time of molding. In the example shown in the figure, the length of the mold 30 is equal to the length of the road shoulder protection block 1 a, four reinforcing plates 33 are arranged at equal intervals, and embedded in the center between the two reinforcing plates 33. A bolt insertion hole 39 for fixing the nut is provided. However, depending on the construction situation, it is preferable to use a shorter length, for example, one-third of that shown in the figure.

  The formwork 30 having the above structure is usually used to fill a gap between the roadside shoulder protection blocks 1a arranged along the side edge of the road with the cast-in-place concrete 40. That is, when the road length of the portion protecting the road shoulder is not an integral multiple of the length of the road shoulder protection block 1a, or when the road shoulder protection block 1a is arranged with an angle difference between adjacent blocks, The road shoulder protection blocks are arranged at intervals, and the form plate 30 is installed such that the face plate 31 is in close contact with the step 7, the outer upper surface 6 and the outer surface 4 at the ends of both adjacent blocks, and anchor pin insertion holes The formwork 30 is fixed to the roadbed with the anchor pins 41 inserted through 38. Then, when placing the cast-in-place concrete 9 inside the road shoulder protection block 1a, the concrete is also placed in the gap between the blocks so that the gap between the blocks has the same shape as the outer surface of the block. It is filled with molded cast-in-place concrete 40.

  As described above, the formwork 30 shown in FIGS. 7 to 9 is used to form the cast-in-place concrete to be placed in the spaced-apart portion when the shoulder protection block 1a is installed at a distance. However, when the road shoulder protection block 1a cannot be used under some condition, the longitudinal ends of the plurality of molds 30 are connected to each other, and the road shoulder structure made of a cast-in-place concrete having the same appearance as the road shoulder structure of the present invention is provided. Can also be used to construct

  When the road shoulder protection blocks of Examples 1 and 2 are used integrally with the cast-in-place concrete, a strong road shoulder structure can be obtained with a small and light precast concrete. Further, in the road shoulder structure using the road shoulder protection block of the first and second embodiments, it is necessary to prepare a block having a different shape even when the root winding block and other structures for standing the guard rail column are provided on the road shoulder. Absent. In addition, when the width of the concrete portion of the road shoulder is desired to be wide or narrow, it is not necessary to prepare blocks having different width dimensions.

  And by using the road shoulder protection block of Examples 1 and 2, the edge of the road shoulder can be formed easily and with good appearance, and the road shoulder protection block 1a arranged at the edge of the road shoulder is a cast-in-place concrete mold. Since it plays the role of a frame, it is not necessary to remove the formwork and backfill after the cast-in-place concrete 9 is cast.

  Further, by using the road shoulder protection block of Examples 1 and 2, it is possible to easily cover the grass protection sheet on the side slope of the road.

  10 and 11 are views showing a road shoulder protection block 1b of the second embodiment and a road shoulder structure using the same. The road shoulder protection block 1b of the second embodiment is different from the road shoulder protection block 1a of the first embodiment only in that the inner upper surface 5b of the block has a hook shape, and other points and the road shoulder using the block 1b. Since the structure is the same as that of the first embodiment, only the drawings corresponding to FIGS. 1 and 4 for the first embodiment are shown, and the same reference numerals are given to the members or parts shown in FIGS. A description thereof will be omitted. The road shoulder protection block 1b shown in FIGS. 10 and 11 has a width W of 100 mm, a length L of 1000 mm, a basic part height H of 100 mm, a heel height G of 60 mm, and a weight of 38 kg. Degree.

  The bowl-shaped inner upper surface 5b protrudes higher than the surface (road surface) of the cast-in-place concrete 9 inside the block 1b, and prevents rainwater that has fallen on the road surface from flowing down to the slopes and cliffs on the road side. Rainwater collected on the road side of the inner upper surface 5b flows along the road side, and flows into drainage basins provided on the road side to be drained. Inside the block 1b, a root winding block can be arranged in the same structure as shown in FIGS. 5 and 6, and the cast-in-place concrete 40 shown in FIG. 9 is formed by the mold 30 shown in FIGS. After that, by disposing a publicly-known saddle block connected to the saddle-shaped inner upper surface 5b, the gap between the end faces of the adjacent blocks 1b can be filled by on-site construction.

  12 to 15 are views showing a third embodiment of the present invention. 12 and 13, the road shoulder protection block 1 c includes a flat bottom surface 2, an inner surface 3 c joined to a side edge of a road pavement, and an outer surface 4 located on the opposite side of the inner surface. And a flat inner long upper surface 5 and an outer upper surface 6c, and a solid cross-section elongated precast concrete product having a step 7 formed at the boundary between the inner upper surface 5 and the outer upper surface 6c and having a lower outer upper surface side. The block 1c shown in the figure has a width W of 120 mm, a length L of 1000 mm, a height H of 80 mm, and a weight of about 19 kg.

  When a plurality of embedded nuts 10 are connected to the flat outer upper surface 6c of the block 1c while adjoining the same block and the longitudinal end surface 11 with each other, the intervals between adjacent embedded nuts are equal. It is buried to become. In the example of the figure in which the length dimension L is 1000 mm, a total of three embedded nuts 10 are embedded in the center of the length and at positions separated by a distance a of 333 mm on both sides thereof. On both end surfaces 11 of the block 1c, a vertical recess 14 having a trapezoidal cross section is formed, and a hook 44 made of a steel bar bent in a U-shape is provided in the recess with both ends embedded in concrete. ing.

  Next, the construction procedure of the road shoulder structure of the third embodiment shown in FIG. 14 will be described. After the necessary road foundation is formed on the embankment 20, the shoulder protection block 1c of the third embodiment is arranged, for example, 500 mm inside from the shoulder, with the longitudinal end faces 11 connected to each other, as shown in FIG. The anchor pin 43 whose upper end is bent in an inverted U shape is inserted into the hook 44 of one adjacent block and the tip of the inverted U shape at the upper end is inserted into the hook 44 of the other block, and is driven into the foundation. The shoulder protection block 1c is fixed. Next, asphalt pavement 15 is performed at the center of the road. At this time, the inner side surface 3 of the road shoulder protection block 1c functions as a mold that defines the side edge of the asphalt pavement layer.

  Then, the weedproof sheet 16 is attached by attaching the upper edge portion thereof to the outer upper surface 6 of the road shoulder protection block 1c with an adhesive and fastening with the bolt 13 screwed into the embedded nut 10. The grass protection sheet 16 having the upper edge fixed to the road shoulder protection block 1c covers the road shoulder portion including the flat portion outside the block 1c, and the lower edge is adhered to the concrete sleeper 18 arranged on the slope 26 with an adhesive. The anchor pins 19 are fixed to the slope together with the concrete sleepers 18. Further, if necessary, an appropriate portion of the weedproof sheet 16 is fixed to the road shoulder surface and the slope 26 using the U-shaped anchor pin 17.

  The road shoulder protection block of the third embodiment is smaller and lighter than the blocks of the first and second embodiments, and is easier to construct. In addition, by using the block, a road shoulder portion and a slope or cliff on the side thereof can be obtained with a simple and good road shoulder protection structure covered with a protective plate or a grass protection sheet. And since the shoulder protection block 1c serves as a mold for defining the side edge of the asphalt pavement, it is not necessary to remove and backfill the mold after the on-site cast concrete 9 is placed.

1 (1a, 1b, 1c) Road shoulder protection block 2 Bottom surface 3, 3c Inner side surface 4 Outer side surface 5, 5b Inner upper surface 6 Outer upper surface 7 Step 9 Spot cast concrete 10 Embedded nut 12 Reinforcing bar connecting embedded nut 16 Weedproof sheet 29 Blocks 30 Formwork 31 Molding surface 32 Substrate 38 Anchor pin insertion hole 40 Cast-in-place concrete

Claims (7)

In the shoulder structure protecting the roadside of the paved road having a slope or cliff with a downward slope on the outside of the roadside,
A cast-in-place concrete provided between a road shoulder protection block elongated in the extending direction of the road laid with the longitudinal ends connected along the road shoulder, and an inner side surface of the block and a side edge of the pavement layer of the road A road shoulder structure with   A base block is provided on a portion of the road shoulder protection block on the inner side of the road, and a guard rail column is erected, and the base block and the road shoulder protection block are integrated via the cast-in-place concrete. A road shoulder structure according to Item 1.   The road shoulder protection block having an embedded nut on the upper surface, and a protective plate or protection for slope protection or grass protection developed on the slope or cliff surface with the upper edge fixed to the embedded nut. The road shoulder structure of the road of Claim 1 or 2 provided with the sheet | seat. In the shoulder structure protecting the roadside of the paved road having a slope or cliff with a downward slope on the outside of the roadside,
A road shoulder protection block which is elongated in the extending direction of the road and is provided with embedded nuts on the upper surface, which is laid by connecting longitudinal ends along the side edges of the road pavement layer, and an upper edge portion on the embedded nuts. A road surface on the opposite side of the road protection block and a protective plate or protective sheet for slope protection or grass protection developed on the slope or cliff. Road shoulder structure.   A road shoulder protection block for constructing a road shoulder structure according to claim 1, 2 or 3, comprising a flat bottom surface, an uneven inner surface joined to a side edge of a cast-in-place concrete, and an inner surface An outer surface located on the opposite side, a flat or bowl-shaped inner upper surface, an outer upper surface inclined in a direction in which the outer surface is lowered, and a step formed by lowering the outer upper surface formed at the boundary between the inner upper surface and the outer upper surface A road shoulder protection block having a solid cross section and a concrete block that is elongated in a direction perpendicular to the cross section, and in which an embedded nut for reinforcing bar connection is embedded in the inner surface.   A road shoulder protection block for constructing a road shoulder structure according to claim 4, comprising a flat bottom surface, an inner surface joined to a side edge of a road pavement, and an outer surface located on the opposite side of the inner surface. A solid block having a side surface, a flat inner upper surface and an outer upper surface, and a step having a lower outer upper surface formed at the boundary between the inner upper surface and the outer upper surface, and a concrete block elongated in a direction perpendicular to the cross section, An embedding nut for a bolt for fixing the upper edge of the protective plate or protective sheet is embedded on the outer upper surface, and a road shoulder protection having hooks for inserting anchor pins for fixing blocks at both longitudinal ends. block.   6. A molded face plate for molding the outer surface, outer upper surface and step of the road shoulder protection block according to claim 5, a substrate formed by bending the lower edge of the molded surface plate to the side opposite to the molded surface, and an anchor pin provided on the substrate A cast-in-place concrete form, comprising an insertion hole, and molding a cast-in-place concrete shoulder that is continuous with a longitudinal end of the road-shoulder protection block in the road-shoulder structure according to claim 1.

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