JP2000265438A - Stone-filled structural body for revetment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent erosion of the waterfront and collapse of a face of slope, etc., easily construct a structural body even if a grade of the face installed is changed, and suppress the amount of consumed lumber. SOLUTION: First crossbars 3 are mounted in nearly parallel at predetermined intervals. Second crossbars 4 are mounted on the first crossbar in nearly parallel in the state that their end parts are laid to overlap each other to nearly orthogonalize. By repeating these operations, the first crossbar and the second crossbar are piled to form a stone-filled space part 2 enclosed with the first crossbars and the second crossbars. Furthermore, mounting and connection of the first crossbars and the second crossbars are repeated so that the stone- filled space parts are continued in a lattice shape to construct a lattice frame 1, in which a net material 5 is stretched to a bottom of each stone-filled space part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention mainly relates to rivers,
This is related to rock-filled structures for revetment to be installed on slopes such as lakes and ponds.

[0002]

2. Description of the Related Art Various types of seawall protection methods have been developed and implemented to prevent erosion and collapse of river banks and the like. For example, it has been common practice to protect concrete slopes by stacking concrete blocks on the slopes from the waterside, or to protect concrete slopes by placing concrete directly on the slopes. However, if the slope is covered with concrete blocks, not only the exposed concrete will damage the landscape, but also reeds and other aquatic plants will not be able to grow on the waterside. Had collapsed. For this reason, in recent years, a method of protecting a slope by stacking stones packed in a basket made of steel wire (hereinafter referred to as a stone-filled basket) on a slope has been reviewed.

[0003] A concrete explanation of the seawall construction method using the stone-filled basket is to level the slope of the construction site to make a floor, and lay a suction-preventing material on this floor. Next, stone-filled baskets are sequentially installed on the floor on which the suction-preventing material is laid, and stones are packed into each stone-filled basket. At this time, in order to prevent the deformation of the stone-packing basket due to the rolling weight of the stone, a stone-packing operation is performed after separately attaching a support plate along the side surface inside the stone-packing basket. When various operations are completed in this way, finally, a net made of a steel material is hung on the upper surface of the stone-filled basket, or the lid made of the net material is closed to complete the entire process.

[0004]

As described above, seawalls using stone-filled baskets are suitable for protecting the natural environment due to the growth of aquatic plants and the like. In order to prevent the deformation, it is necessary to separately attach a support plate along the side surface portion, which increases the number of operation steps.

[0005] For this reason, wood has attracted attention as a material that does not deform when packing stones and can maintain the natural nature of the waterside, and there is a need for a seawall with a structure using wood. However, building a frame for packing stones with wood requires a large amount of wood, and in particular, a large number of woods must be arranged on the floor supporting the stones. As described above, the use of a large amount of wood is not preferable in nature protection, and it is desirable to reduce the number of wood used as much as possible.

Further, when covering a slope to be protected by connecting a frame made of wood, the connection structure in a portion where the slope of the slope changes is complicated, and the operation is troublesome. For example, in the case where wood frames are sequentially connected and installed from a horizontal plane to a plane where a predetermined gradient is formed, a connection structure of a portion that transitions from the horizontal plane to the gradient plane becomes complicated, and the operation becomes complicated. Further, as the connection structure becomes more complicated, more wood is used.

Therefore, the present invention prevents seawater erosion and collapse of slopes and the like, and can easily be constructed even when the slope of the installation surface changes, and can reduce the amount of wood used for embankment. It is intended to provide a structure.

[0008]

SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object. According to the first aspect of the present invention, the first timbers are placed substantially in parallel at predetermined intervals. While placing the second horizontal lumber almost parallel on the first horizontal lumber in a state where the ends are superimposed and almost orthogonal to each other,
This is repeated to form a stone-filled space surrounded by the stacked first and second horizontal timbers, and the first and second horizontal timbers are formed such that the stone-filled voids are continuous in a grid. It is a revetment stone stuffing structure in which a lattice frame is constructed by repeating the placement and connection of the above, a net material is stretched on the bottom surface of each stone stuffing space, and stones are stuffed in each stone stuffing space, At the longitudinal ends of the first and second lateral lumbers, connecting pieces each having a half thickness removed are formed, and the lateral lumbers adjacent to each other in the longitudinal direction overlap each other. And a shaft material is fixed to the overlapped portion by passing the shaft in the overlap direction.

According to a second aspect of the present invention, in the gradient change area in which the gradient of the surface on which the horizontal timber is placed changes, the overlapping surface of the connecting piece is set to the vertical direction, and the overlapping portion of the connecting piece is 2. The shaft member to be passed is set in a horizontal direction, and a connection angle between one side timber and the other side timber connected by the shaft member can be adjusted according to a gradient change in the gradient change region. The embankment for rock protection described in the above.

[0010] According to a third aspect of the present invention, there is provided the rock embankment structure for revetment according to the first or second aspect, wherein a net material is stretched on an upper surface of the lattice frame.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a seawall stuffing structure in which stones are stuffed in a part of the stone stuffing space 2 of the lattice frame 1, FIG. 2A is a plan view of the seawall stuffing structure, and FIG. ) Is a front view thereof, FIG. 3A is an enlarged side view of a portion from a slope to a horizontal plane, FIG. 3B is a side view of a seawall stuffing structure, and FIGS. 4A to 4D are lattices. FIGS. 3E to 3J are an end view and a side view of the horizontal timber, and FIGS. 3K and 3L are a side view and a plan view of a complementary material.

In the embankment embankment structure according to the present invention, the first horizontal lumber 3 is placed substantially in parallel at a predetermined interval, and the ends of the first horizontal lumber 3 are substantially orthogonal to each other. In this state, the second horizontal lumber 4 is placed almost in parallel, and this is repeated to form the stuffed vacant space 2 surrounded by the stacked first horizontal lumber 3 and the second horizontal lumber 4. The placement and connection of the first horizontal lumber 3 and the second horizontal lumber 4 are repeated so that the stuffing vacancies 2 are continuous in a lattice shape, thereby constructing a lattice frame 1. 5 is stretched in a state where it is fastened to the horizontal timber positioned below, and the stones are packed in each stone-filling space 2. The first and second horizontal lumbers 3 and 4 for constructing the lattice frame 1 are lumbers whose length, thickness and the like have been standardized in advance. The net material 5 can be made of a suitable material such as metal or plastic.

The first and second horizontal lumbers 3 and 4 are long lumbers having a substantially square cross section and mainly used for surfaces having a uniform gradient. In the present embodiment, the first and second horizontal lumbers 3 and 4 are shown in FIGS. As shown,
A chamfered square piece having a thickness of 100 mm and a length of about 2150 mm is used, and a lateral connecting piece 6 formed by cutting off a half of the thickness at both ends is formed. That is, at the end of the wood, a cut is made on the surface including the longitudinal center line, a half is cut off, and the remaining portion is used as the lateral connecting piece 6, and the cut surface of the lateral connecting piece 6 is It becomes a polymerized surface. Specifically, horizontal cuts are made at a thickness of 50 mm from both ends of the wood to a position 150 mm from both ends, respectively, and the upper half is cut off. Therefore, the first and second horizontal wood 3,
The lateral connection piece 6 at one end and the lateral connection piece 6 at the other end are located on the same side. Further, a vertical through hole 7 having a diameter of about 20 mm is formed in the lateral connecting piece 6 at a position 75 mm from the end.

The surface on which the lattice frame 1 is installed does not always have a uniform gradient, but changes in the middle. For this reason, in the gradient change region where the gradient changes, the angle-adjustable horizontal lumber 10 that can adjust the connection angle according to the change in the gradient is used. As shown in FIGS. 4 (e) to 4 (j), the angle-adjusting horizontal lumber 10 is a chamfered square lumber having the same thickness as the first and second horizontal lumbers 3 and 4 but a shorter length. At one end, a cut is made in the horizontal direction in the same manner as the first and second horizontal lumbers 3 and 4 to form a lateral connection piece 11 which is cut off in half, and at the other end, a vertical connection piece is formed. A vertical connecting piece 12 is formed by making a cut and cutting one half. That is, from one end of the wood
A 50 mm thick horizontal cut is made to a position of 50 mm, the lower half is cut off, and the remaining upper half is used as a lateral connection piece 11, and a vertical through hole 13 having a diameter of about 20 mm is placed at a position 75 mm from one end. Then, a vertical cut is made at a thickness of 50 mm in the right and left direction from the other end to a position 150 mm from the other end, one half is cut off, and the remaining part is made into a vertical connection piece 12. The end of this vertical connection piece 12 A horizontal through hole 14 having a diameter of about 20 mm is formed at a position 75 mm from the center. The end face of the vertical connecting piece 12 forms a tapered relief.

As shown in FIGS. 4 (k) and (l), the complementary material 15 is a plate-shaped wood of 100 mm × 150 mm × 50 mm (length × width × height), and is 75 mm from the longitudinal end. Is provided with a through hole 16 having a diameter of about 20 mm. When the lattice frame 1 described later is connected in series while the connecting pieces 6 of the horizontal timbers 3 and 4 are superimposed, there is a connecting piece 6 that does not polymerize with the other connecting pieces 6. It is a spacer that superimposes on the piece 6 to complement the cut portion and adjust the appearance.

Next, a procedure for assembling the above-mentioned horizontal lumbers 3, 4, and 10 to construct the lattice frame 1 and packing the stones will be described. In addition, the construction procedure of the lattice frame 1 may be connected in order from the lower part of the slope to the upper part, from the upper part to the lower part, or to the right and left of the slope, depending on the situation of the work site. The connection may be made sequentially from one side to the other, or a part of the lattice frames 1 may be assembled in advance near the installation location to form a plurality of stone-filled cavities 2 and then moved to the installation location. However, here, for convenience of explanation, a case where the slopes are sequentially connected from one side to the other side will be described.

In order to construct the lattice frame 1, as a pre-process, the slope of the construction site is leveled to make a floor, and a suction-preventing material 17 is laid on this floor. The suction-preventing member 17 is made of a synthetic fiber or a coconut fiber in a mat shape.

First, in a region where the gradient is maintained at a constant inclination angle, the first and second horizontal lumbers 3 and 4 are assembled to construct most of the lattice frame 1. For example, in order to construct the sloped first section S1 and the sloped second section S2 of the slope shown in FIG. 2 and FIG. The first horizontal lumber 3a is placed substantially in parallel on the suction-preventing member 17 in a direction along the inclination direction with an interval of 1900 mm (that is, at a pitch of 2000 mm) between the first horizontal lumbers 3a. The next first horizontal lumber 3b is connected to the lower horizontal connecting piece 6 with the superposed surface facing downward and the horizontal first connecting piece 6b facing upward, and the two first horizontal lumbers 3a, 3b are connected. Are arranged in a series along the inclination direction. In the embodiment shown in the drawings, the upper end portion of the first horizontal lumber 3a and the first horizontal lumber 3
Since both the lower end portion b and the lower end portion serve as a gradient changing region, the angle adjusting cross timber 10 is connected to both the lateral connecting pieces 6, which will be described later.

If the first horizontal lumber 3a, 3b is arranged in parallel at a predetermined interval, the first horizontal lumber 3a, 3b
On the upper side, the second horizontal lumber 4a, 4b, 4c is placed in a state where the lateral connecting pieces 6 at the end portions are overlapped with each other so as to be substantially orthogonal. In this case, each of the second horizontal lumbers 4 is superimposed on the first horizontal lumber 3 with the superposed surface facing upward with the lateral connection pieces 6 facing down. And
In the present embodiment, since the first lateral lumber 3 in the right side row in FIGS. 2 and 5 on the slope is the end of the revetment, it is complemented on the right lateral connecting piece 6 of the second lateral lumber 4 in the figure. The material 15 is overlapped and complemented, and on the left lateral connecting piece 6, the next lateral connecting piece 6 of the second horizontal lumber 4d, 4e, 4f is superposed with the superposed surface facing down.

By repeating such an operation, the first cross wood 3
When the second horizontal lumber 4 is stacked on the second horizontal lumber 4 and the first horizontal lumber 3 is further stacked on the second horizontal lumber 4, the first horizontal lumber 3 is formed into three layers,
The horizontal timber 4 is stacked in two layers, two stone-filled cavities 2 surrounded by the first horizontal timber 3 and the second horizontal timber 4 are formed, and the vertical penetration of the superposed horizontal connecting piece 6 is performed. When the nut 7 is tightened by inserting the shaft member 20 such as a bolt through the hole 7 and communicating the same, the first horizontal lumber 3 stacked in an orthogonal state is
And the second horizontal lumber 4 can be fixed in a state where the horizontal connecting pieces 6 are superimposed, and the first inclined section S1 and the second inclined section S2 of the lattice frame 1 are assembled.

Then, a mesh material 5 is provided on the bottom of each
In a state where the ends of the net member 5 are fastened to the lower horizontal lumbers 3 and 4 such as the first and second horizontal lumbers 3 and 4 by fasteners (not shown) such as hooks and pins. Set up, this stone stuffed space 2
Inside, stuff a stone about 10cm in diameter. The stone to be packed is
The size shall be such that it does not pass through the vertical gap of the laminated horizontal timber.

When the above operation is sequentially repeated from the right side to the left side of the slope, the third and fourth sections S3, S4, the fifth and sixth sections S5, S6,... Can be sequentially assembled. Since the first and second horizontal lumbers 3 and 4 assembled on the slope are connected through the shaft member 20 in the vertical through hole 7 formed in the horizontal connecting piece 6 in the vertical direction. By appropriately selecting the lengths of the first and second crosspieces 3 and 4 constituting the same inclined section, the connection direction of the adjacent inclined section connected to this inclined section can be changed.

Next, the construction in the gradient changing area where the gradient of the surface on which the horizontal timbers 3 and 4 are mounted changes will be described.
In this embodiment, the inclination angle changes to a substantially horizontal plane above the first inclined section S1, the inclined third section S3, and the like on the slope,
For example, the slope changes almost horizontally below the second slope section S2, the fourth slope section S4, etc., and becomes, for example, a waterside, so that the slope changes at the upper end of the slope. The construction of the area will be described as an example.

When assembling sections such as the above-described first inclined section S1 and third inclined section S3, as shown in FIG.
The horizontal connecting piece 11 of the angle-adjusting horizontal timber 10 is superimposed on the horizontal connecting piece 6 on the inclined upper end side of the first horizontal lumber 3 from above with the superposed surface facing downward. Therefore, the first horizontal lumber 3 and the angle-adjusting horizontal lumber 10 are connected in series, and the angle-adjusting horizontal lumber 10 protrudes from the first inclined section S1 at the slope angle of the slope. When the angle-adjusting horizontal timber 10 is connected to the inclined upper end of the first horizontal timber 3 in this manner, the shortest one of the angle-adjusting horizontal timbers 10 to be connected to the lowermost first horizontal timber 3 is changed to the first interrupted first. The angle-adjusting horizontal lumber 10 connected to the horizontal lumber 3 has an intermediate length, and the angle-adjusting horizontal lumber 10 connected to the uppermost first horizontal lumber 3 has the longest length. That is, assuming that the surface where the angle changes is a curved surface, the short angle-adjusting horizontal timber 10 is connected to the virtual center side of the surface where the gradient changes, and the long angle-adjusting horizontal timber 10 is connected as the distance from the virtual center increases. . Therefore, on the lower end side of the first horizontal lumber 3 where the change in the angle is reversed, that is, on the waterside side, a long angle adjusting horizontal lumber 10 is provided in the lower row, a medium length is provided for interruption, and a shortest is provided in the uppermost row. Connect. The length of each angle-adjusting horizontal lumber 10 passes through the inflection point where the inclination angle of the gradient changes, and the horizontal through-hole 14 of the vertical connecting piece 12 is formed on an imaginary straight line passing through the middle of the angles of both surfaces. It is desirable to set the length to be located.

When the angle-adjustable horizontal lumber 10 is connected to the upper end of the first horizontal lumber 3 in this manner, the same length as the angle-adjustable horizontal lumber 10 is connected to the vertical connecting piece 12 of each angle-adjustable horizontal lumber 10. The vertical connection pieces 12 of the horizontal timber 10 are overlapped from the horizontal direction, and a shaft member 21 such as a bolt is horizontally passed through both the horizontal through holes 14 to fasten and fix a nut. Horizontal wood 1 with angle adjusted by horizontal shaft 21
When the 0s are connected to each other, the connection angle of both the angle adjusting crosspieces 10 can be freely selected, and therefore, the connection angle can be appropriately adjusted according to the change in the gradient.

When assembling the upper first section U1 and the upper second section U2 on a horizontal plane extending horizontally from the inclined upper end of the slope, as shown in FIG.
The lowermost horizontal connecting piece 11 of the angle-adjusting horizontal wood 10 is superimposed on the horizontal connecting piece 6 of the horizontal wood 3 from above, and the horizontal connecting piece 6 of the second horizontal wood 4 is superimposed on this superposed portion. 1st horizontal timber 3
, And the horizontal connecting piece 6 of the first horizontal wooden piece 3 is placed on the horizontal connecting piece 6 of the second horizontal wooden piece 4. On the connecting piece 6, the horizontal connecting piece 11 of the middle angle adjusting horizontal wood 10 is superposed from above, and similarly, the second horizontal wood 4 and the first horizontal wood 3 are placed, and finally, the uppermost row. Angle adjustment horizontal wood piece 10 horizontal connection piece 11
Is polymerized on the lateral connecting piece 6 of the first horizontal lumber 3 at the top,
The shaft members 20 such as bolts are passed through the respective vertical through holes 7 to be fixed by tightening with nuts.

In the gradient changing region where the gradient changes in this manner, the angle-adjusting horizontal timber 1 having the vertical connecting piece 12 is provided.
By connecting 0, the grid frame 1 installed on the slope and the grid frame 1 installed on the horizontal surface can be connected while adjusting according to the gradient change. The first gradient change section UV1, the upper second gradient change section UV2, and the like can be sequentially constructed, and the stone-filled empty portions 2 are formed in a row. Then, the net material 5 is stretched and the stones are packed on the bottom surfaces of the stone-filled empty portions 2 in the same manner as described above. In addition, the net material 5 is stretched on the bottom surface of the stone stuffing space 2 formed by the first horizontal wood 3 and the second horizontal wood 4 installed on the horizontal surface, and the stone is stuffed.

Since the gradient also changes in the area extending from the lower end of the slope to the waterside, the angle-adjusting horizontal timber 1 is attached to the horizontal connecting piece 6 at the lower end of the first horizontal timber 3 installed on the slope.
0 to connect the first horizontal lumber 3 to the angle-adjusting horizontal lumber 10 extending in the horizontal direction so as to correspond to the change in the gradient.
The second horizontal timber 4 is crossed over the horizontal timber 3, and this is repeated to sequentially construct the lower first horizontal section D1, the lower second horizontal section D2, and the like, and the lower first gradient change section DV1, the lower second horizontal section D1. The gradient change section DV2 and the like are sequentially constructed. As described above, in the region extending from the slope to the waterside, the angle change is opposite to the upper surface of the bank, so that the angle-adjusting horizontal lumber 10 uses a shorter one on the upper side and a longer one on the lower side. .

Then, cobblestones having a size of 100 mm or more are packed in each stone-filling space 2 of the lattice frame 1 assembled according to the above-described procedure, and a stone-filling structure for revetment is constructed.
Finally, in order to prevent the stones packed in the stone packing space 2 from falling down, it is desirable to secure the net material 22 made of steel on the upper surface to ensure safety. In addition, the net material 22
Can be made of an appropriate material such as metal or plastic.

Further, as described above, the angle-adjustable side timber 1
A length of 0 varies depending on the degree of change in the gradient, and this is achieved by creating a connecting member having a required length on site. That is, the vertical connection piece 12 side is formed to be longer beforehand, and the vertical connection piece 12 side is cut to a required length at the site, and the horizontal through hole 14 is opened here.
In addition, in order to save the trouble of such processing, the horizontal through-hole 14 formed in the vertical connecting piece 12 may be a long hole elongated in the longitudinal direction of the angle-adjusting horizontal timber 10.

As described above, the horizontal connecting pieces 6 are formed at both ends of the horizontal lumbers 3 and 4, and the horizontal connecting pieces 6 are superimposed to form a series of horizontal members, which intersect with the horizontal members. Then, the upper horizontal members are assembled in a series in the same manner, and the horizontal connecting pieces 6 overlapping in the vertical direction of the horizontal members are fixed and integrated by the vertical shaft member 20, and the first and second horizontal members are orthogonal to each other. The square space surrounded by the timbers 3 and 4 is referred to as a stone-filled space 2, and the floor portion for supporting the cobblestone to be packed in the stone-filled space 2 is a net material 5 stretched on the lower surface. Can be extremely reduced. In other words, when wood is used for the floor,
This is because it is necessary to provide wood at a narrow interval smaller than the diameter of the boulder, and a large amount of wood must be used.

In the above-described embodiment, the stones are stuffed sequentially from inside the stuffing vacant space 2 of the assembled section. However, the procedure for stuffing the stones is not limited to this. For example, the entire lattice frame 1 is formed. The stones may be packed in each stone filling space 2 at a time.
In addition, although a long bolt is used as the shaft member 20 and the stacked horizontal members are fixed by tightening nuts, the shaft member 20 may be made longer to be driven into the ground as an anchor.

Further, the suction-preventing member 17 is laid all over the floor of the slope which has been leveled in advance.
However, the present invention is not limited to this. When the above-described net member 5 is fastened, the lower surface of the net member 5 is superimposed and integrated with a suction prevention member 17 having substantially the same outer shape, and the net integrated with the suction prevention member 17 is formed. The member 5 may be fixed to the lower horizontal member. Thus, the suction prevention material 1
By integrating the mesh member 7 and the net member 5 and fastening them to the horizontal timber, a work process of laying the suction prevention member 17 over the entire slope can be omitted, and the seawall construction method can be simplified.

The crosspieces 3, 4, and 10 are formed to have a substantially square cross section and are chamfered at the corners. However, the crosspiece in the present invention is not limited to this. For example, the thinned wood can be used without processing the cross-sectional shape or without forming it into a square.

[0035]

As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, the first horizontal lumber is placed substantially in parallel at a predetermined interval, and the second horizontal lumber is placed on the first horizontal lumber in a state where the end portions are overlapped with each other so as to be substantially orthogonal. The horizontal timber is placed almost in parallel, and this is repeated to form a stone-filled space surrounded by the first horizontal timber and the second horizontal timber that are stacked, and the stone-filled voids are connected in a grid pattern. The first horizontal timber and the second horizontal timber are repeatedly placed and connected to form a lattice frame, a net material is stretched on the bottom of each stone-filled space, and stones are packed in each stone-filled space, At the longitudinal ends of the first and second lateral lumbers, connecting pieces each having a half thickness removed are formed, and the lateral lumbers adjacent to each other in the longitudinal direction overlap each other. Along with
Since the shaft was passed through this polymerization part in the polymerization direction and fixed,
The strength required for revetment can be obtained sufficiently. In addition, since a portion serving as a support for the stone to be packed in the stone-filled space is made of a net material, the amount of wood used can be reduced.

Further, since the lattice frame is made of wood, there is no deformation due to the rolling weight of the stone packed in the lattice frame, and excellent durability can be expected. Since a slight change in the angle can be expected, it is easy to adapt to the ground by relieving unreasonable stress according to the change in the ground. In addition, the protection of living organisms such as rivers can be ensured, and it also fuses with the surrounding landscape. Further, since wood is lighter than concrete, it is possible to work even at a site where heavy equipment such as a crane cannot be put in, and the labor of an operator can be reduced as compared with the conventional case using concrete.

According to the second aspect of the present invention, in the gradient change area where the gradient of the surface on which the horizontal timber is placed changes, the overlapping surface of the connecting piece is made to be vertical and is passed through the overlapping portion of the connecting piece. The shaft is horizontal, and the connection angle between one cross wood and the other cross wood connected by this shaft can be adjusted in accordance with the gradient change in the gradient change area. Can be built. Therefore, it is possible to assemble the lattice frame regardless of the leveling shape of the slope, and to sufficiently secure the function as a seawall.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rock embankment structure according to the present invention.

FIG. 2 (a) is a plan view of a revetment stone-packed structure, and FIG.
Is a front view thereof.

FIG. 3A is an enlarged side view of a portion from a slope to a horizontal plane, and FIG. 3B is a side view of a seawall stuffing structure.

FIGS. 4 (a) to 4 (d) are end views and side views of the cross wood for assembling the lattice frame, and FIGS. 4 (e) to 4 (j) are end views and side views of the cross wood, (k) and (l). FIG. 4 is a side view and a plan view of a complementary material.

FIG. 5 is an explanatory diagram of a procedure for assembling a lattice frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lattice frame 2 Stone-filled empty part 3 1st horizontal lumber 4 2nd horizontal lumber 5 Netting 6 Horizontal connecting piece 7 Vertical through hole 10 Angle adjusting horizontal lumber 11 Angle adjusting horizontal lumber horizontal connecting piece 12 Angle adjusting horizontal Vertical connection piece of wood 13 Vertical through hole of angle adjusting horizontal wood 14 Horizontal through hole of angle adjusting horizontal wood 15 Complementary material 16 Through hole 17 Suction prevention material 20 Shaft (vertical direction) 21 Horizontal to connect angle adjusting horizontal wood Shaft material of direction 22 Net material

Claims (3)

[Claims] 1. A first cross piece of wood is placed substantially in parallel with a predetermined interval, and the second cross piece of wood is substantially superposed on the first cross piece of wood in a state where the end portions of the first cross piece are almost perpendicular to each other. It is placed in parallel, and this is repeated to form a stone-filled space surrounded by the first and second horizontal timbers, and the first horizontal timber is formed so that the stone-filled voids are continuous in a grid. The placement and connection of timber and the second horizontal timber are repeated to construct a lattice frame, mesh material is laid on the bottom of each stuffed space, and stones are buried in each stuffed space. In the structure, connecting pieces obtained by cutting off a half of the thickness are formed at the longitudinal ends of the first and second horizontal lumbers, respectively, so that the horizontal lumbers adjacent to each other in the longitudinal direction are separated from each other. Each connection piece is polymerized, and a shaft is passed through this polymerized part in the direction of polymerization and fixed. Zotai. 2. In a gradient change region in which the gradient of the surface on which the horizontal lumber is placed changes, the overlapping surface of the connecting piece is set in the vertical direction, and the shaft passing through the overlapping portion of the connecting piece is set in the horizontal direction. 2. The embankment for revetment according to claim 1, wherein a connection angle between one cross piece of wood and the other cross piece of wood connected by the shaft member can be adjusted according to a gradient change in the gradient change area. 3. Structure. 3. The embankment structure for embankment according to claim 1, wherein a net material is stretched on an upper surface of the lattice frame.