JP3108918B2 - Retaining wall structure using wood and its constituent materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall structure made of wood or the like, and more particularly to a retaining wall structure constructed by stacking a plurality of logs or the like and a constituent material thereof.

[0002]

2. Description of the Related Art Conventionally, retaining walls in civil engineering work are usually constructed by stacking stones or concrete blocks, but they are heavy and difficult to handle, and depending on the construction site, may deteriorate the aesthetics and landscape. There is a disadvantage, and in order to solve this, use of a wood block in which wooden logs are assembled in a cross-girder shape and the logs are projected from a central portion thereof as a substitute is proposed (Japanese Patent Publication No. 2-3858). reference)
However, this also had the disadvantage that many bolts had to be tightened at the time of assembling, and the assembling was troublesome and the cost was high. In addition, the present invention has proposed a retaining wall structure in which a plurality of stages are stacked, and a cutout concave portion is provided at each crossing portion of the stacked wood or the like so as to be non-rotatably fitted, so that it can be assembled without using bolts. Japanese Patent Application No. 9-30938
This is the retaining wall of No. 5.

[0003]

However, such a retaining wall structure has a problem that it is troublesome to crush the soil and the like backed up during construction. If the soil on the depth side of the retaining wall slopes after the construction, the depth side of the vertical member also descends to generate a rotational moment about the horizontal member, and the fitting with the horizontal member occurs. There is a problem that it is necessary to work extremely carefully in the construction so that it may not be possible to do so.
The inventor of the present invention has found that, while continuing his intensive research, it is possible in terms of strength to replace two or more rows of cross members on the same stage into one row, and has reached the present invention. . The present invention has been made in view of such circumstances, and an object of the present invention is to require a retaining wall structure that can easily suppress the backfilled earth and sand during construction, and require a high degree of attention during construction. It is to provide an unretained retaining wall structure and its components.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve such an object, and the present invention is configured as follows. A: A plurality of columns of columnar wooden crosspieces arranged laterally on the slope of the retaining wall itself and vertical wooden crosspieces arranged in the depth direction of the retaining wall crossing the horizontal struts are alternately stacked. A retaining wall structure to be constructed, wherein the cross member is a round bar member having a circular cross section, and the vertical member is a natural log member not subjected to a cutting process on an outer peripheral portion, and a vertical member. Two or more vertical members per horizontal member are arranged at predetermined intervals in each stage where the wooden members are to be arranged, and each of the upper and lower horizontal members is disposed at a portion near one end of the vertical member. The cross-section, in which the outer peripheral portion of the horizontal member can be rotatably fitted at the crossing portion, is provided with an arc-shaped notch recess so as to fit each other, and furthermore, in the space surrounded by each vertical member and the horizontal member, a chestnut stone, a cobblestone, A retaining wall structure using wood that is formed by filling one or more types of filler such as crushed stones, earth and sand, and other fillers. B. A plurality of columnar wooden crosspieces arranged laterally on the slope of the retaining wall itself and vertical wooden crosspieces arranged in the depth direction of the retaining wall intersecting with the horizontal struts are alternately stacked in a plurality of stages. In a retaining wall structure to be constructed, the cross member is a round bar member whose cross section is processed into a circular shape, the vertical member is a wooden bar member, and each step where the vertical member is to be arranged. Is that two or more vertical members are arranged at a predetermined interval per one horizontal member, and each vertical member is arranged so that a diagonal line on a cross section thereof is directed in the vertical direction. An arc-shaped cut-out recess is provided at the intersection of the side member and the cross member on the lower side so that the outer peripheral portion of the cross member can be rotatably fitted. Filled space is filled with one or more of stones, such as stones, cobble stones, crushed stones, earth and sand, and other fillers to form a retaining wall Retaining wall structure using polished wood. C In the retaining wall structure using wood according to the above A or B, the notch recesses to be provided on the upper side and the lower side of the vertical members themselves in all or some of the steps where the vertical members are to be arranged are formed. A retaining wall structure made of wood in which the distances from the ends are different from each other, and the length of the longitudinal members is made longer or shorter, or the profile of the retaining wall cross section can be changed without changing the length. D In the retaining wall structure using wood according to any one of the above items A to C, the vertical member has a circular or elliptical cross section at a part or all of an outer peripheral portion instead of a natural log or a square member. Use a wooden bar formed into a shape such as a polygon, a substantially circular shape, a substantially elliptical shape, a substantially polygonal shape, and simultaneously or alone, the crosspiece has an elliptical, polygonal, or substantially circular cross section. Retaining wall structure using wood that uses bars processed into a substantially elliptical shape, a substantially polygonal shape, and the like. E In the retaining wall structure using wood according to any one of the above items A to D, the uppermost horizontal member or the vertical member can be fastened to the lower vertical member or the horizontal member by a screw bolt or a bolt. Retaining wall structure using wood. F. A retaining wall structure using wood as described in any one of the above items A to E, wherein the horizontal member and the vertical member are subjected to a preservative treatment. G In the retaining wall structure using the wood according to any one of the above items A to F, wood in which grass and trees are planted between the upper horizontal member and the lower horizontal member. Retaining wall structure using. H using the wood according to any one of the above items A to G
In the retaining wall structure, the cross section contour formed in the vertical member is an arc
U-shaped cross-section instead of the notch-shaped recess, and a substantially circular arc
Shape, approximately U-shape, square groove shape, approximately square groove shape
Retaining wall structure using wood . I. The horizontal member and the vertical member according to any one of the above items A to H
A component of a retaining wall structure consisting of:

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings illustrating embodiments of the present invention. In FIG. 1, reference numeral 10 denotes a horizontal member, and 12 denotes a vertical member. These are alternately stacked in a plurality of stages, and a retaining wall is constructed by filling a space inside thereof with a stone such as a cobblestone 14, a cobble stone, a crushed stone and the like, earth and sand, and the like. You. The horizontal member 10 and the vertical member 12 are preservative-treated and have durability. As shown in FIG. 2 (a), the cross member 10 is a round bar made of wood and has a circular cross section, and is arranged in the lateral direction on the surface of the retaining wall, that is, on the slope. Vertical member 12
Is a so-called natural log (log), which is shorter than the cross member 10 but is not subjected to a forming process such as cutting at the outer periphery as shown in FIG. As shown in the figure, two notch recesses 16 each having an arc-shaped cross section are arranged vertically in the vertical direction, that is, in the depth direction of the retaining wall, and near the leading end where the cross member 10 crosses. It is provided so that the cross member 10 can be rotatably fitted.
Note that the notch recess 16 is formed in the horizontal member 10 as shown in FIG.
It is desirable that a slight gap be generated between them. That is, it is desirable to make the radius of curvature of the notch recess 16 larger than the radius of the cross member 10. The reason will be described later. A plurality of vertical members 12 are arranged per one horizontal member 10, and serve as a holding member for the horizontal member 10. If the vertical members 12 are arranged with the base opening side, that is, the side (thick side) near the base facing the depth side of the retaining wall, the vertical members 12 are less likely to come off, which is convenient. Although it is possible to use a natural log material with a skin for the vertical member 12, it is preferable to use a natural log material whose skin is peeled from the viewpoint of durability and antiseptic treatment. As the cross member 10 and the vertical member 12, the diameter is usually 10 to 28.
Since the material of about cm is used, the thinned wood can be effectively used. Here, the length of the cross member 10 is about 2 to 4 m,
The length of the vertical member 12 is about 0.7 to 2 m, but can be appropriately adjusted.

[0006] The height of the retaining wall is such that the horizontal members 10 and the vertical members 1 are stacked.
By changing the number of steps 2, the length of the retaining wall in the horizontal direction can be adjusted by adjusting the number of the horizontal members 10 connected in the horizontal direction. The strength of the retaining wall is vertical 12 and horizontal 10
Can be adjusted depending on the size, length, and arrangement density (number per unit width). The uppermost horizontal member 10 is fixed to the lower vertical member 12 by a screw bolt 18. However, when the vertical member 12 is the uppermost row, the lower horizontal member 1
Fixed to 0. Further, the lower horizontal member or the vertical member may be fastened by a bolt, a U bolt or the like.

According to the above embodiment, the horizontal member 10 and the vertical member 12 are used.
It is only necessary to stack them alternately in each step and fit them into the cutout recesses 16, and it is not necessary to use bolts or the like, so that the construction is easy. Also, since only one row of cross members is provided on the slope of the retaining wall at each step, there is no obstacle on the depth side of the retaining wall when embankment, backfilling, and crushing backfilled earth and sand Therefore, embankment or backfilling with a power shovel or the like and crushing with a crushing machine are easy. Furthermore, even if the vertical member 12 sinks after construction, the vertical member 12 can move around the horizontal member 10 within the notch recess 16 so as to rotate within a certain range, so that the retaining wall structure may be disturbed. The impact can be avoided and construction can be performed with confidence. Although the vertical member 12 can freely rotate with respect to one horizontal member 10, in reality, the notch recesses 16 on both the upper and lower sides formed in one vertical member 12.
And the two horizontal members 10 are in contact with each other, and the vertical members 12 are hard to rotate freely. However, as shown in FIG.
Since a slight gap is provided between the side edge of the horizontal member 10 and the horizontal member 10, the vertical member 12 can rotate within a certain range. Further, since a natural log is used for the vertical member 12, the cost can be reduced as compared with a case where a processed material is used.

FIG. 3 shows an example in which the sectional profile of the retaining wall slope is changed. In the embodiment shown in FIG. 1, the cross-sectional contour is straight, but in the case of FIG. 3, it has a curved shape, and is excellent in strength, beauty, and taste. In the case where no change is required, the same reference numeral is assigned and detailed description is omitted (the same applies hereinafter). Each of the vertical members 20, 22, 24, 26, and 28 has a smaller inclination angle toward the upper side, is substantially horizontal at the uppermost level, and has a longer length toward the upper level. But,
The cross member 10 has the same diameter at each step as in the case of FIG. Although it is possible for the vertical members to have the same length at each step, it is desirable that the vertical members have an appropriate length depending on the soil characteristics and topography in consideration of the strength of the retaining wall, since the vertical members act as a retaining member.

FIG. 4 shows an example in which the sectional profile of the retaining wall slope is further changed. The cross-sectional contour is curved so that the upper portion projects outward from the case shown in FIG. 3, and has a different aesthetic or hobby from the retaining wall of FIG. 3. The horizontal member and the vertical member are different from those in FIG. 3 in that the uppermost horizontal member 36, the next horizontal member 34 and the uppermost vertical member 32, and the next horizontal member 30 are different from those in FIG.
The longitudinal members are the same as in FIG. That is, the cross member 34,
36 have the same diameter but are thicker than the horizontal member 10, and the vertical members 30 and 32 have the same diameter and the same length but are longer than the lower vertical member 28, and FIGS. As shown in ()), the upper cut-out recesses 38, 42 and the lower cut-out recesses 40, 44 are provided so as to be shifted from each other at positions different from the ends. And the notch recess 38 of the vertical member 30
The notch 40 is made large so that the cross member 34 can be fitted, but the cutout recess 40 is made small so that it can be fitted to the cross member 10. By increasing the diameter of the horizontal members 34, 36 on the upper side,
The reason for increasing the diameter and increasing the length of 32 is to consider safety in strength.

When the notch recesses to be provided on the upper side and the lower side of each vertical member are shifted so as to have different distances from the ends, as shown in FIGS. Lumber 4
Even if 6, ..., 48, ... are arranged horizontally, the contour of the retaining wall slope can be curved or inclined.

In each of the above-mentioned embodiments, a wooden round bar having a circular cross section may be used in place of the natural log. There is an advantage that various sizes can be standardized and mass-produced, and that there is no trouble of preparing logs having the same diameter. In addition, the cross-section is elliptical, substantially elliptical, polygonal, substantially polygonal, square-shaped with a circular bulge on both sides,
It is also possible to use an ellipse processed into a shape in which both sides are deleted flat.

FIG. 7 shows another embodiment of the present invention. In each of the above embodiments, a wooden bar is used instead of a natural log or a molded round bar as a vertical bar. The vertical member 50, which is a square member, is arranged so that the diagonal line on the cross-section faces up and down as shown in the figure, and as shown in FIG. A concave portion 52 is provided so that the outer peripheral portion of the cross member 10 can be rotatably fitted. Vertical member 5
Numeral 0 denotes a formed square bar, which can be mass-produced in various sizes, and has an advantage that there is no trouble of preparing logs having the same diameter as in the case of a processed round bar.

A grass or tree may be planted between each horizontal member. The covering of the surface of the retaining wall by the rooting, foliage, etc. prevents the loss of earth and sand, increases the strength of the retaining wall, and improves the beauty. In particular, the durability and strength of the retaining wall are increased due to the rooting as the years pass after construction. Green trees (for example,
Planting azaleas, satsuki, etc.) and flowers will help to further enhance the beauty. Seeds such as weeds may be sowed or planted. Helps reduce costs.

In each of the above-described embodiments, the joints of the cross members appear on the same line in the vertical direction of each step, for example, as shown in FIG. 1 (a). The cross members of each stage may be arranged so as to be in a state. Further, the vertical members may also be displaced one by one. Rather, when considering strength, it is better to shift. Further, in the above-described embodiment, the cut-out concave portion has an arc-shaped cross-sectional profile, but has a U-shaped, substantially arc-shaped, substantially U-shaped, square groove-shaped, substantially square groove-shaped, or other similar cross-sectional profile. In some cases, for example, when there is no problem in strength, the shape may be square. Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

[0015]

As described above, the present invention has the following advantages. The use of wooden rods, square timbers, and natural logs as horizontal and vertical timbers and stacking them at regular intervals to construct a retaining wall has the advantage of excellent aesthetics and taste. is there. In addition, a notch recess in which a horizontal member can be fitted is provided above and below one end of the vertical member, but the distance between the two notch recesses from the end of the vertical member is shifted from each other, so that the cross section of the retaining wall is reduced. It can be easily tilted, curved, or overhanged, and the beauty and taste can be further improved. further,
Just by stacking horizontal round bars and vertical natural logs, processed round bars, and square bars alternately in each stage, the skeleton of the retaining wall without the need for bolting work like conventional wood blocks It is easy to construct the retaining wall because the inside space can be filled with earth and stones. In particular, construction is much easier than block retaining walls and conventional wood blocks, so the construction period can be significantly reduced. Furthermore, since the horizontal members arranged in the same step are only provided in a row on the slope of the retaining wall, it will be an obstacle on the depth side of the retaining wall when performing the work of crushing the earth and stones backfilled during construction. Since there is nothing, it is easy to put backfilled debris with a power shovel or the like and to suppress the pressure with a rolling machine, thereby improving work efficiency. Also, even if the vertical member sinks after construction, the vertical member is designed to be rotatably fitted to the horizontal member in the notch recess in a certain range, and the vertical member rotates around the horizontal member as an axis. Since it can move, the moment due to the rotation of the vertical member is not transmitted to the horizontal member, so that it is possible to avoid the effect of causing an excessive force in the fitting portion between the vertical member and the horizontal member, and it is possible to perform the construction with ease. Further, if a round bar or a square bar which is formed and processed is used as a constituent material, it is easy to have many of the same size. Furthermore, the structure is stabilized if the uppermost horizontal member or vertical member can be fastened to the lower vertical member or horizontal member using a screw bolt or the like. The life of the retaining wall structure is improved by applying the preservative treatment to the cross members and the vertical members. Furthermore, planting grass and trees between the horizontal and vertical timbers can artificially maintain the natural environment, and even if the timber rots in the future, the walls will be cut by the grass and tree roots. Has a stable structure and comes closer to nature.

[Brief description of the drawings]

FIGS. 1A, 1B, and 1C are a front view, a cross-sectional view, and a partially enlarged cross-sectional view showing one embodiment of a retaining wall of the present invention.

FIGS. 2 (a) and 2 (b) are a side view and a front view, respectively, of components of the embodiment of the retaining wall.

FIG. 3 is a sectional view showing another embodiment of the retaining wall of the present invention.

FIG. 4 is a sectional view showing still another embodiment of the retaining wall of the present invention.

FIGS. 5 (a) and 5 (b) are a side view and a front view, respectively, of components of the embodiment of the retaining wall.

FIGS. 6A and 6B are explanatory views showing different modifications of the embodiment.

FIGS. 7A and 7B are a front view and a sectional view showing still another embodiment of the retaining wall of the present invention.

FIG. 8 is a side view and a front view of one component of the embodiment.

[Explanation of symbols]

 Reference Signs List 10 horizontal member 12 vertical member 16 notch concave portion 18 screw bolt 20 vertical member 24 vertical member 26 vertical member 28 vertical member 30 vertical member 32 vertical member 34 horizontal member 36 horizontal member 38 notch concave portion 40 notch concave portion 42 notch concave portion 44 notch concave portion 46 vertical Material 48 Vertical material 50 Vertical material 52 Notch recess

Claims (9)

(57) [Claims] 1. A crosspiece of a columnar tree arranged laterally on a slope of a retaining wall itself and a vertical member of a tree arranged in the depth direction of the retaining wall so as to intersect with the lateral member. A retaining wall structure that is constructed by stacking a plurality of stages, wherein the cross member is a round bar member having a circular cross section, and the vertical member is a natural log member not subjected to a cutting process on an outer peripheral portion. There are two or more vertical members per horizontal member at a predetermined interval in each stage where the vertical members are to be arranged, and the upper and lower horizontal members are located at a portion near one end of the vertical member. The cross-sectional contour, which can be rotatably fitted to the outer periphery of the cross member, is provided at each intersection with the cross member so as to fit by providing an arc-shaped notch concave portion. Retaining made of wood that is made up of a retaining wall by filling one or more of rocks, cobbles, crushed stones, etc., earth and sand, and other fillers Wall structure. 2. A columnar wooden cross member arranged in the lateral direction on the slope of the retaining wall itself and a vertical wooden member arranged in the depth direction of the retaining wall intersecting with the horizontal member. A retaining wall structure configured to be constructed by stacking a plurality of stages, wherein the cross member is a round bar member having a circular cross section, the vertical member is a wooden bar, and the vertical member is arranged. At each stage, two or more vertical members are arranged at a predetermined interval per horizontal member, and each vertical member is arranged such that a diagonal line on the cross section is directed vertically.
Further, a cross-sectional contour that allows the outer peripheral portion of the horizontal member to be rotatably fitted to each crossing portion between the upper and lower horizontal members is provided in a portion near the one end portion of the vertical member so as to be fitted with an arc-shaped notched concave portion. West,
Moreover, in the space surrounded by each vertical and horizontal material, chestnut stone, cobblestone,
A retaining wall structure using wood that is formed by filling one or more types of filler such as crushed stones, earth and sand, and other fillers. 3. The retaining wall structure using wood according to claim 1 or 2, wherein all or some of the steps where the longitudinal members are to be arranged should be provided above and below the longitudinal members themselves. A wood-based holding system in which the cutout recesses are at different distances from the ends of the longitudinal members and the length of the longitudinal members is made longer or shorter, or the profile of the retaining wall cross section can be changed without changing the length Wall structure. 4. The retaining wall structure using wood according to any one of claims 1 to 3, wherein the vertical member is a cross section of a part or all of an outer peripheral portion instead of a natural log member or a square member. Is a circular, elliptical, polygonal, substantially circular, substantially elliptical, using a wooden processing rod material formed into a shape such as a substantially polygonal shape, and at the same time or alone, the cross member is elliptical in cross section, A retaining wall structure made of wood that uses bars processed into polygonal, substantially circular, substantially elliptical, and substantially polygonal shapes. 5. The retaining wall structure using wood according to any one of claims 1 to 4, wherein a top horizontal member or a vertical member is a screw bolt with respect to a lower vertical member or a horizontal member. Or a retaining wall structure using wood that can be fastened with bolts. 6. A retaining wall structure using wood according to any one of claims 1 to 5, wherein the horizontal member and the vertical member are preserved. . 7. A retaining wall structure using wood according to any one of claims 1 to 6, wherein grass and trees are planted between an upper cross member and a lower cross member. Retaining wall structure made of lumber made to do. 8. The method according to claim 1, wherein:
In the retaining wall structure using the wood of the above, it is formed in the vertical member
The cross-sectional contour is U instead of the arc-shaped notch recess.
U-shape, U-shape, square groove, square groove
Retaining wall structure made of wood . 9. The method according to claim 1, wherein:
The component of the retaining wall structure which consists of the horizontal member and the vertical member .