WO2020044641A1

WO2020044641A1 - Retaining wall structure with blocks comprising long axes and short axes and equiaxed blocks

Info

Publication number: WO2020044641A1
Application number: PCT/JP2019/013134
Authority: WO
Inventors: えり飯塚; 佐藤　光司
Original assignee: 株式会社トッコン
Priority date: 2018-08-30
Filing date: 2019-03-27
Publication date: 2020-03-05
Also published as: JP2020033761A; KR20210015961A

Abstract

[Problem] This invention addresses the problems of: preventing slippage of retaining wall blocks even during major earthquakes, and allowing a rigid retaining wall structure to be built; constructing, in a short time and at a low cost, a retaining wall structure for which earthquake resistance can be freely set according to the level of earthquake resistance required for the retaining wall structure; and constructing, in a short time and at a low cost, not only flat retaining walls but also retaining wall structures that have three-dimensional curved surfaces. [Solution] Provided is a flat or curved retaining wall structure that combines elongated retaining wall blocks, having lengthwise cross-sectional shapes with long X-axes and short Y-axes, and equiaxed retaining wall blocks, said retaining wall structure having a configuration in which at least some of the retaining wall blocks with long X-axes and short Y-axes are placed so that short Y-axes face in the lateral direction (horizontal direction) along the retaining wall slope and the long X-axes face in the direction toward the front of the retaining wall slope.

Description

Retaining wall structure with block with long axis and short axis and block with equal axis length

The present invention relates to retaining walls in road construction, for example, upright retaining walls, revetment retaining walls in river construction, for example, multi-stage embankment retaining walls and greening-type natural revetment retaining walls, soil retaining walls for residential land development construction, and seawall retaining walls for coastal embankments. For example, the present invention relates to a retaining wall structure used for constructing an embankment embankment retaining wall or a landscape retaining wall such as a castle wall or a stone wall.

As an example of such a retaining wall structure, there is a prior art relating to a structure constructed by stacking blocks 32 on a foundation portion provided on a foundation ground. (See Patent Document 1)
The stacking block 32 according to the prior art includes a front wall 33 and a rear wall 34, and a connecting body (left and right walls 35, 36) connecting the front and rear walls 33, 34, and is vertically opened. The rear wall 34 is set at a height of half or less of the front wall 33. In addition, a sliding resistor 40 is suspended between the upper portions of the left and right walls 35 and 36.

A sliding resistor 40 is arranged at the upper and lower boundary surfaces of the respective blocks formed by stacking the blocks so as to straddle the lower block side and the upper block side, and the lower block is the same as the front wall 33 of the lower block. The space formed between the sliding resistance body 40 and the side is filled with a constraining layer forming material (carrying material 31: crushed stone, chestnut stone, or the like) to form a lower front constraining layer. A constraining layer forming material (backing material 17) is provided in a space formed between the sliding resistor 40 on the lower block side and a rear wall of the lower block or a slope formed behind the structure. Filling is performed to form a lower rear constraining layer.

Further, the space formed between the front wall 33 of the upper block and the sliding resistor 40 on the upper block side is filled with a constraining layer forming material (carrying material 31: crushed stone, chestnut stone, or the like) to fill the upper layer. In addition to forming the front-side constraining layer on the side, the constraining layer forming material (packing material 31: Crushed stone, chestnut stone, etc.) to form a rear constrained layer on the upper side, and concatenate the upper and lower front constrained layers in the vertical direction at the upper and lower boundary surfaces of the respective steps, The rear constraining layer is vertically continuous with the front constraining layer continuous in the vertical direction and the rear constraining layer continuous in the vertical direction exerts a reaction force (passive force) via the sliding resistor 40. Of the retaining wall block which strengthened the sliding resistance of the block at the upper and lower boundary It has a retaining wall structure with a vertical boundary structure.

In the retaining wall structure of the invention disclosed in Patent Document 1, a front wall 33, a rear wall 34, a connecting body (left / right side walls 35, 36) connecting the front / rear walls 33, 34, and a left / right side The sliding resistor 40 disposed between the upper portions of the walls 35 and 36 is designed to prevent the retaining wall block from sliding. However, an active resistor is provided to prevent the retaining wall block from sliding. In the stage of constructing the retaining wall, it is necessary to prepare a special member of 40 and bury it in the stuffing material 31 inside the retaining wall. There has been a problem that, as the period becomes longer, the cost of building a retaining wall increases.

In addition to coping with such a problem, it is possible to freely construct a retaining wall structure having not only a planar retaining wall but also a three-dimensional curved surface. In order to prevent the sliding of the vehicle and to form a solid retaining wall structure in a short time at low cost, the retaining wall structure of the invention disclosed in Patent Document 2 employs the following retaining wall structure. ing.

That is, (1) a column-shaped retaining wall block having a rectangular cross section having a long axis X axis and a short axis Y axis, or (2) a rectangular cross section having a long axis X axis and a short axis Y axis. And a rectangular or curved retaining wall structure using a pillar-shaped retaining wall block having a cross-sectional shape obtained by rounding or chamfering a corner of the rectangular cross-sectional shape, A retaining wall block in which the major axis X-axis is oriented in the horizontal direction (horizontal direction) along the retaining wall slope and the minor axis Y-axis is oriented in the direction toward the front of the retaining wall slope (hereinafter referred to as “horizontal arrangement block”). ), A retaining wall block (hereinafter referred to as “vertical”) in which the short axis Y axis is oriented horizontally along the retaining wall slope and the long axis X axis is oriented forward of the retaining wall slope. The arrangement is called a “placement block”).

By adopting such a retaining wall structure, the effect of preventing the sliding of the retaining wall block by the anchor effect of the vertically arranged block and obtaining a solid retaining wall structure could be obtained. In order to have a retaining wall structure that can withstand recent massive earthquakes, a stronger retaining wall structure is required, and seismic strength can be set freely according to the required level of seismic resistance of the retaining wall structure There was a need to provide a retaining wall structure.

JP 2011-202499 A JP 2017-206832 A

The present invention has been made in view of the above technical background, and prevents the retaining wall block from sliding even in the event of a huge earthquake, and furthermore, it is possible to construct a strong retaining wall structure. It is an object of the present invention to construct a retaining wall structure capable of freely setting seismic strength according to the required level of seismic resistance of the retaining wall structure in a short period of time and at low cost. Another object is to construct a retaining wall structure having not only a planar retaining wall but also a three-dimensional curved surface in a short time at low cost.

The inventors conducted intensive studies on how to enhance the anchor effect of the above-described vertical arrangement block in order to build a stronger retaining wall structure, and as a result, installed the vertical arrangement block and the outer periphery of the vertical arrangement block It has been found that the size of the contact area with the filling material greatly affects the magnitude of the anchor effect of the vertically arranged blocks.

That is, the contact area between the vertically arranged block and the filling material installed on the outer periphery of the vertically arranged block, and the contact in a direction perpendicular to the direction in which the vertically arranged block slides (the direction toward the front of the retaining wall). It has been found that the anchor effect of the vertically arranged blocks increases as the area increases.

Therefore, in order to solve the above problem, in the invention according to the first aspect, a columnar retaining wall block having a rectangular cross-sectional shape having a major axis X axis and a minor axis Y axis, and a retaining wall having an equiaxial length are provided. A wall or a retaining wall structure in a combination of a flat surface and a curved surface, wherein at least a part of the retaining wall block having a major axis X axis and a minor axis Y axis is formed by using the minor axis Y axis as a retaining wall slope. Along the horizontal direction (horizontal direction), the retaining wall structure has a configuration in which the long axis X axis is arranged in a direction toward the front of the retaining wall slope.

Further, in the invention according to the second aspect, a rectangular cross-sectional shape having a major axis X axis and a minor axis Y axis is provided, and a corner of the rectangular sectional shape is rounded by an arc or chamfered. A flat or curved retaining wall structure combining a columnar retaining wall block having a shape and an equiaxial length retaining wall block, the retaining wall block having a major axis X axis and a minor axis Y axis. , At least a part of which is arranged with the short axis Y axis oriented in the lateral direction (horizontal direction) along the retaining wall slope and the long axis X axis oriented in the direction toward the front of the retaining wall slope. Structured.

In the invention according to a third aspect, in the retaining wall structure according to the invention according to the first or second aspect, a retaining wall block having a long axis X axis and a short axis Y axis, and a retaining wall block having an equiaxial length. Are alternately arranged in the horizontal direction (horizontal direction).

Further, in the invention according to the fourth aspect, in the retaining wall structure according to any of the inventions according to the first to third aspects, a retaining wall block having a major axis X axis and a minor axis Y axis is provided. The retaining wall structure has a configuration in which retaining wall blocks are alternately arranged in a horizontal direction (horizontal direction) and a plurality of stages are stacked in a vertical direction (vertical direction) of the retaining wall slope.

Further, in the invention according to the fifth aspect, in the retaining wall structure according to the invention according to the fourth aspect, the retaining wall structure includes at least two retaining wall surfaces, and at a corner portion of the retaining wall which is a connection portion between the two retaining wall surfaces. , A retaining wall block having a major axis X axis and a minor axis Y axis is disposed, and the length of the major axis X axis of the upper level vertical direction (vertical direction) of the retaining wall slope and the length of the lower level retaining wall block. The retaining wall structure was configured to be alternately stacked so as to intersect with the axis X.

In the invention according to the sixth aspect, in the retaining wall structure according to the invention of the fourth or fifth aspect, an upper-side retaining wall block in which a plurality of stages are stacked in a vertical direction (vertical direction) of the retaining wall slope. And the retaining wall blocks on the lower tier are arranged in a staggered manner with a predetermined distance between them.

Further, in the invention according to the seventh aspect, in the retaining wall structure according to any of the inventions according to the first to sixth aspects, a retaining wall block having a major axis X axis and a minor axis Y axis is provided. On the outer peripheral surface of each retaining wall block, a plurality of projections protruding outward in the outer peripheral direction are provided, and the projections of adjacent retaining wall blocks arranged in a horizontal plane are arranged so as to mesh with each other. The structure is a retaining wall structure.

発明 Further, in the invention according to the eighth aspect, in the retaining wall structure according to the invention according to the seventh aspect, the projecting portion is a retaining wall structure extending over the entire height of the retaining wall block.

Further, in the invention according to a ninth aspect, in the retaining wall structure according to any one of the first to eighth aspects, the major axis X axis of the retaining wall block having the major axis X axis and the minor axis Y axis is provided. The ratio of the length to the short axis Y axis is 2: 1. The length of the short axis Y axis of the retaining wall block having the long axis X axis and the short axis Y axis is the same as the length of the retaining wall block having the equal axis length. The retaining wall structure had a configuration in which the lengths in the X-axis and Y-axis directions were equal.

By adopting the retaining wall structure having the above-described configuration, the contact area between the vertically arranged blocks and the filling material installed on the outer periphery of the vertically arranged blocks, and the direction in which the vertically arranged blocks slide (the It is possible to increase the arrangement density of the vertically arranged blocks so that the contact area in the direction perpendicular to the frontward direction (direction toward the front) is increased, and it is possible to maximize the anchor effect of the vertically arranged blocks. Also, since the arrangement density of the vertically arranged blocks can be appropriately set, the anchor effect of the vertically arranged blocks can be arbitrarily set.

Therefore, even in the event of a large earthquake, the retaining wall block can be prevented from sliding, and a stronger retaining wall structure can be constructed than in the prior art. Therefore, it became possible to construct a retaining wall structure that can freely set the seismic strength in a short period of time and at low cost.

Also, a column-shaped retaining wall block having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis, and a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis are provided. By combining a pillar-shaped retaining wall block with a rounded or chamfered cross-sectional shape and a column-shaped retaining wall block, particularly an equiaxial-length retaining wall block having a cylindrical shape, compared to the conventional technology. Therefore, the direction of the long axis X axis of the vertical arrangement block can be set more arbitrarily in a horizontal plane, so that not only a planar retaining wall but also a retaining wall structure having a three-dimensional curved surface can be used for a short period of time. It became possible to construct at low cost.

FIG. 1 shows a pillar-shaped retaining wall block having a rectangular cross-sectional shape having a major axis X axis and a minor axis Y axis. FIG. 2 shows a columnar holder having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis, and having a cross-sectional shape obtained by rounding or chamfering a corner of the rectangular cross-sectional shape. It shows a wall block. FIG. 3 shows a retaining wall block having a cylindrical shape and an equiaxial length. FIG. 4 shows one step using a column-shaped retaining wall block having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis, and an equiaxial length retaining wall block having a square cross-sectional column shape. This shows a state in which a pile retaining wall structure is constructed. FIG. 5 shows a multi-stage stack using a columnar retaining wall block having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis and an equiaxial length retaining wall block having a square cross-sectional column shape. This shows a state in which a retaining wall structure has been constructed. FIG. 6 shows a columnar holder having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis, and having a cross-sectional shape obtained by rounding or chamfering a corner of the rectangular cross-sectional shape. 1 shows a state in which a single-layer retaining wall structure is constructed using a wall block and an equiaxial-length retaining wall block having a cylindrical shape. FIG. 7 shows a columnar support having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis, and having a cross-sectional shape obtained by rounding or chamfering a corner of the rectangular cross-sectional shape. FIG. 2 shows a state in which a multi-tiered retaining wall structure is constructed using a wall block and an equiaxial-length retaining wall block having a cylindrical shape. FIG. 8 shows a modified example of a columnar retaining wall block having a rectangular cross section having a major axis X axis and a minor axis Y axis. The outer peripheral surface of the retaining wall block has an outer peripheral direction. A plurality of projections having a semicircular arc shape are provided. FIG. 9 shows a columnar support having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis, and having a cross-sectional shape obtained by rounding or chamfering a corner of the rectangular cross-sectional shape. This is a modified example of the wall block, in which a plurality of projections having a semicircular arc-shaped cross section projecting outward in the outer peripheral direction are provided on the outer peripheral surface of the retaining wall block. FIG. 10 shows a modified example of an equiaxial retaining wall block having a cylindrical shape. The outer peripheral surface of the retaining wall block has a plurality of semicircular protrusions projecting outward in the outer peripheral direction. Are provided. FIG. 11 shows an example of a retaining wall structure using the retaining wall block shown in FIGS. 9 and 10. FIG. 12 shows another example of the retaining wall structure using the retaining wall block shown in FIGS. 9 and 10.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a columnar retaining wall block 10 having a rectangular cross section having a major axis X axis and a minor axis Y axis, and FIG. 2 shows a major axis X axis and a minor axis Y axis. This shows a pillar-shaped retaining wall block 20 having a rectangular cross-sectional shape and having a cross-sectional shape obtained by rounding or chamfering a corner of the rectangular cross-sectional shape. FIG. 3 shows a retaining wall block 30 having an equiaxial length, which has a cylindrical shape.

擁 The retaining wall block 10 shown in FIG. 1 has a columnar shape having a rectangular cross-sectional shape. Here, the longitudinal direction of the rectangular section is referred to as a major axis X axis, and the direction perpendicular to the major axis X axis is referred to as a minor axis Y axis. One or a plurality of hollow portions may be provided inside the retaining wall block 10 along the height (H) direction and the length (L) direction, and the width (W), the length (L), And the dimensions of the height (H) can be set arbitrarily.比 In order to simplify the arrangement of the retaining wall blocks 10 when constructing the retaining wall structure, the ratio of the width (W) dimension to the length (L) dimension may be set to 1: 2.

The retaining wall block 10 can be formed using concrete. The concrete used may be either permeable concrete or non-permeable concrete.
Further, the retaining wall block 10 is not limited to concrete, but may be made of a metal such as iron subjected to rust prevention treatment, a resin material having corrosion resistance, or a resin composite material.

擁 The retaining wall block 20 shown in FIG. 2 has a columnar shape with a rectangular cross-sectional shape, and the corners of the rectangular cross-section are rounded by an arc. In the case of the retaining wall block 20 shown in FIG. 2, the two corners of the rectangular cross section are rounded with one arc (in other words, the diameter of the arc is equal to the width (W) of the retaining wall block 20). However, the present invention is not limited to this, and the corners may be rounded with an arc smaller than the arc shown in FIG.

角 Alternatively, the corners of the rectangular cross section may be finished in a chamfered shape, instead of being rounded with an arc.大き The size of the chamfer in this case can be determined arbitrarily.

In the retaining wall block 20 shown in FIG. 2, similarly to the retaining wall block 10 shown in FIG. 1, the longitudinal direction of the cross-sectional shape obtained by rounding or chamfering a corner is called a major axis X axis, and the corner is The direction perpendicular to the major axis X-axis within the section rounded or chamfered by an arc is called the minor axis Y-axis. One or a plurality of hollow portions may be provided inside the retaining wall block 20 along the height (H) direction and the length (L) direction, and the width (W), the length (L), And the dimensions of the height (H) can be set arbitrarily. In order to simplify the arrangement of the retaining wall blocks 20 when constructing the retaining wall structure, the ratio of the width (W) dimension to the length (L) dimension may be set to 1: 2.

The retaining wall block 20 can be formed using concrete similarly to the retaining wall block 10. The concrete used may be either permeable concrete or non-permeable concrete.
Further, the retaining wall block 20 is not limited to concrete, but may be made of metal such as rust-proofed iron, a resin material having corrosion resistance, or a resin-based composite material.

FIG. 3 shows an equiaxial-length retaining wall block 30 having a cylindrical shape, which is a typical example of the equiaxial-length retaining wall block 30. The equiaxial length retaining wall block 30 having a cylindrical shape has a hollow cylindrical shape, and dimensions such as a diameter (D), a height (H), and a wall thickness (T) are not particularly limited. .
In this specification, the retaining wall block 30 having an equal axial length is defined as a columnar retaining wall block having the same length in the X-axis direction and the Y-axis direction shown in FIG.
Therefore, not only the retaining wall block having a cylindrical shape, but also a retaining wall block having a columnar shape having a square cross section, a retaining wall block having a columnar shape having a polygonal cross section, and the like are included in the retaining wall block 30 having an equiaxial length.
Further, in order to simplify the arrangement of the retaining wall blocks 30 when constructing the retaining wall structure, the X-axis direction length and the Y-axis direction length of the retaining wall blocks 30 having the same axial length are determined by the retaining wall blocks 10 and 20. And the height (H) of the equiaxial retaining wall block 30 is set to be the same as the height (H) of the retaining wall blocks 10 and 20. Is also good.

The retaining wall block 30 can be formed using concrete similarly to the retaining wall blocks 10 and 20. The concrete used may be either permeable concrete or non-permeable concrete.
The retaining wall block 30 is not limited to concrete, but may be made of a metal such as rust-proofed iron, a resin material having corrosion resistance, or a resin-based composite material.

FIG. 4 shows a retaining wall block 10 (a columnar retaining wall block having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis) and a retaining wall block 30 (an equiaxial length having a square cross section columnar shape). FIG. 2 is a perspective view showing a case where a single-layer retaining wall structure 100 is constructed by using the retaining wall blocks 100 in combination. In the retaining wall structure 100, the retaining wall structure 100 is constructed by arranging a plurality of retaining wall blocks 10 and retaining wall blocks 30 in combination. FIG. 4 shows an example of a method of arranging the retaining wall block. In the retaining wall structure 100 shown in FIG. 4, the short axis Y axis of the retaining wall block 10 extends in the lateral direction along the slope of the retaining wall ( (The horizontal direction), the major axis X axis is arranged in a direction toward the front of the slope of the retaining wall (this retaining wall block 10 is referred to as a “vertical arrangement block”), and between the retaining wall blocks 10. An equiaxial length retaining wall block 30 is arranged. In the retaining wall structure 100 shown in FIG. 4, the retaining wall blocks 10 and the retaining wall blocks 30 are regularly arranged alternately. However, it is not always necessary to arrange them alternately regularly, and the retaining wall blocks are arranged in any order. 10 and the retaining wall block 30 can be arranged.

FIG. 5 is a perspective view of a case where a multi-tiered retaining wall structure 100 is constructed using a combination of the retaining wall block 10 and the retaining wall block 30 (equiaxial retaining blocks having a columnar shape having a square cross section). It is shown. In this retaining wall structure 100, a retaining wall block 10 and a retaining wall block 30 (equiaxial retaining wall having a columnar shape with a square cross section) are further provided on the single-layer retaining wall structure 100 shown in FIG. 4. Block) in combination.

In the retaining wall structure 100 shown in FIG. 5, the retaining wall block 10 (or retaining wall block 30) on the upper side is separated from the retaining wall block 10 (or retaining wall block 30) on the lower side by a predetermined distance in the horizontal direction. , But is not limited to this.擁 The retaining wall structure 100 can also be constructed such that the arrangement of the retaining wall blocks 10 on the upper side and the arrangement of the retaining wall blocks 10 on the lower side do not have a specific regularity.

The hollow portion in the retaining wall block 10 and the retaining wall block 30 and the space between the retaining wall block 10 and the retaining wall block 30 and the slope 5 are filled with a filling material 6 made of crushed stone, chestnut stone, or the like. Alternatively, this may be compacted.

By using the retaining wall structure 100 described here, especially the outer peripheral side surface of the vertical arrangement block and the slope 5 side come into contact with the compacted filling material 6, and the vertical arrangement block is in front of the slope side. Resistance will be generated to prevent sliding to the side.効果 The effect of preventing the vertically arranged blocks from sliding toward the front of the slope will be referred to herein as the anchor effect of the vertically arranged blocks.

Therefore, by arranging the retaining wall blocks 30 between the retaining wall blocks 10, the arrangement density of the retaining wall blocks 10 (vertical arrangement blocks) can be increased, and at the same time as the compacted filling material 6 Since the outer peripheral surface of the retaining wall block 10 (vertical arrangement block) in contact with the sliding wall direction of the retaining wall block 10 can be maximized, the contact resistance is maximized, and the anchor effect of the vertical arrangement block is reduced. You will be able to get the most out of it.

In addition, the retaining wall structure 100 described here only needs to be arranged by combining the retaining wall block 10 and the retaining wall block 30, and there is no need to use a special machine or the like or to require a special on-site work. Thus, the solid retaining wall structure 100 can be constructed at a low cost in a short period of time.

FIG. 6 shows a retaining wall block 20 (having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis, and rounding or chamfering a corner of the rectangular cross section with an arc). A perspective view of a case where a single-stage retaining wall structure 100 is constructed by using a combination of a column-shaped retaining wall block provided) and a retaining wall block 30 (equiaxially-length retaining wall block having a cylindrical shape) is shown. Things. In the retaining wall structure 100, the retaining wall structure 100 is constructed by arranging a plurality of retaining wall blocks 20 and retaining wall blocks 30 (equiaxially-length retaining wall blocks having a cylindrical shape) in combination. FIG. 6 illustrates an example of a method of arranging the retaining wall block. In the retaining wall structure 100 illustrated in FIG. 6, the short axis Y axis of the retaining wall block 20 extends in the lateral direction along the retaining wall slope ( (The horizontal direction), the long axis X axis is arranged in a direction toward the front of the slope of the retaining wall (this retaining wall block 20 is called a “vertical arrangement block”), and between the retaining wall blocks 20. The retaining wall block 30 is arranged. In the retaining wall structure 100 shown in FIG. 6, the retaining wall blocks 20 and the retaining wall blocks 30 are regularly arranged alternately. However, it is not always necessary to arrange them alternately regularly, and the retaining wall blocks are arranged in any order. 20 and the retaining wall block 30 can be arranged.

FIG. 7 is a perspective view showing a case where a retaining wall structure 100 of a multi-stack structure is constructed by using a combination of the retaining wall block 20 and the retaining wall block 30 (retaining wall block having a cylindrical shape and an equiaxial length). It is. In this retaining wall structure 100, a retaining wall block 20 and a retaining wall block 30 (equiaxially-length retaining wall block having a cylindrical shape) are further provided on the single-layer retaining wall structure 100 shown in FIG. It is a combination of multiple stacks.
The features, effects, and the like of the retaining wall structure 100 shown in FIGS. 6 and 7 are similar to those of the retaining wall structure 100 described with reference to FIGS. Here, since an equiaxial retaining wall block having a cylindrical shape is used as the equiaxial retaining wall block, the degree of freedom of the orientation direction in the horizontal plane of the vertically arranged block is improved. Not only the retaining wall but also a retaining wall forming a slope having a three-dimensional curved surface can be freely constructed.

A retaining wall block 40 (a columnar retaining wall block having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis) shown in FIG. 8 is a modified example of the retaining wall block 10, and the retaining wall block 40. Are provided with a plurality of projections 41 having a semicircular cross section projecting outward in the outer peripheral direction. In the retaining wall block 40 shown in FIG. 8, the semicircular projection 41 extends over the entire height of the retaining wall block 40, but is not limited to such an embodiment. Alternatively, it may be provided only at the center in the height direction of the retaining wall block 40, or may be provided only at the upper end or the lower end of the retaining wall block 40. Also, the cross-sectional shape of the projection 41 is a semicircular arc shape, but is not limited to this, and the projection 41 may have a rectangular, triangular, or trapezoidal cross-sectional shape.

In addition, the retaining wall block 50 shown in FIG. 9 (having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis, and rounding or chamfering a corner of the rectangular cross-sectional shape with an arc). A pillar-shaped retaining wall block having a cross-sectional shape is a modified example of the retaining wall block 20. On the outer peripheral surface of the retaining wall block 50, a plurality of protrusions 51 having a semicircular arc-shaped cross section projecting outward in the outer peripheral direction. Are provided. In the retaining wall block 50 shown in FIG. 9, similarly to the retaining wall block 40 described above, the semicircular arc-shaped projection 51 extends over the entire height of the retaining wall block 50, but is not limited to such an aspect. Instead, the protrusion 51 may be provided only at the center in the height direction of the retaining wall block 50, or may be provided only at the upper end or the lower end of the retaining wall block 50. Also, the cross-sectional shape of the projection 51 is a semicircular arc shape, but is not limited to this, and the projection 51 may have a rectangular, triangular, or trapezoidal cross-sectional shape.

A retaining wall block 60 (equiaxial retaining wall block) shown in FIG. 10 is a modified example of the retaining wall block 30 (equiaxial retaining wall block having a cylindrical shape). The surface is provided with a plurality of projections 61 having a semicircular arc cross section projecting outward in the outer peripheral direction. In the retaining wall block 60 shown in FIG. 10, the semicircular projection 61 extends over the entire height of the retaining wall block 60, similarly to the retaining wall blocks 40 and 50 described above. It is not limited, and the protrusion 61 may be provided only at the center in the height direction of the retaining wall block 60, or may be provided only at the upper end or the lower end of the retaining wall block 60. . Further, the cross-sectional shape of the protrusion 61 is a semicircular arc shape, but is not limited thereto, and may be a protrusion 61 having a rectangular, triangular, or trapezoidal cross-sectional shape.
Note that an equiaxial length retaining wall block having a columnar shape with a square cross section and an equiaxial length retaining wall block having a columnar shape with a polygonal cross section can also be provided with the above-described protrusions.

擁 It is possible to construct a retaining wall structure similar to the retaining wall structure 100 described above by using the retaining wall blocks 40 and 60 described above or the retaining wall blocks 50 and 60 in combination. By using the retaining wall blocks 40 and 60 or the retaining wall blocks 50 and 60 in combination to construct a retaining wall structure similar to the retaining wall structure 100, the protrusion 41 of the retaining wall block 40 and the retaining wall block are formed. 60, or the projections 51 of the retaining wall block 50 and the projections 61 of the retaining wall block 60 can be arranged so as to mesh with each other. The effect of preventing the sliding of the wall block 50 and the retaining wall block 60 is enhanced, and a more rigid retaining wall structure can be constructed.

FIG. 11 shows a retaining wall block 50 (having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis, and rounding or chamfering a corner of the rectangular cross section with an arc). 1 shows an example of a retaining wall structure 100 constructed by using a combination of a columnar retaining wall block provided with a retaining wall block 60 and a retaining wall block 60 (equiaxial retaining wall block having a cylindrical shape).

In the retaining wall structure 100 shown in FIG. 11, the retaining wall block 50 is oriented with the short axis Y axis in the horizontal direction (horizontal direction) along the retaining wall slope, and the long axis X axis is directed forward of the retaining wall slope. In addition to being oriented in the direction (ie, used as a vertical arrangement block), the major axis X axis is oriented in the horizontal direction (horizontal direction) along the retaining wall slope, and the minor axis Y axis is defined as the retaining wall slope. (Horizontal arrangement block).擁 The retaining wall block 60 is disposed between the retaining wall blocks 50. As described above, by using the retaining wall block 50 and the retaining wall block 60 in combination and constructing the retaining wall structure 100, it is possible to construct a variety of various retaining wall structures 100.

In the retaining wall structure 100 shown in FIG. 12, another example of the retaining wall structure 100 constructed by using a combination of the retaining wall block 50 and the retaining wall block 60 (equiaxial retaining wall block having a cylindrical shape). It is shown. In the retaining wall structure 100 shown in FIG. 12, a retaining wall block 50 is disposed at a corner portion of a retaining wall, which is a connecting portion between two retaining wall surfaces, and the retaining wall block 50 on the upper side in the vertical direction (vertical direction) of the retaining wall slope. And the long axis X axis of the lower retaining wall block 50 are alternately stacked so as to intersect with each other. By employing such a retaining wall structure 100, the strength of the corners of the retaining wall structure 100 can be increased.

5 Slope 6 Filling material 10 Retaining wall block 20 Retaining wall block 30 Retaining wall block 40 Retaining wall block 41 Projection 50 Retaining wall block 51 Projection 60 Retaining wall block 61 Projection 100 Retaining wall structure

Claims

A column-shaped retaining wall block having a rectangular cross-sectional shape having a major axis X axis and a minor axis Y axis;
A flat or curved retaining wall structure combining an equiaxial length retaining wall block,
At least a part of the retaining wall block having the major axis X axis and the minor axis Y axis is oriented in the lateral direction (horizontal direction) with the minor axis Y axis along the retaining wall slope, and the major axis X axis is defined as the retaining wall method. Retaining wall structure characterized by being arranged in the direction toward the front of the surface.
A column-shaped retaining wall block having a rectangular cross-sectional shape having a long axis X axis and a short axis Y axis, and having a cross-sectional shape obtained by rounding or chamfering a corner of the rectangular cross-sectional shape; ,
A flat or curved retaining wall structure combining an equiaxial length retaining wall block,
At least a part of the retaining wall block having the major axis X axis and the minor axis Y axis is oriented in the lateral direction (horizontal direction) with the minor axis Y axis along the retaining wall slope, and the major axis X axis is defined as the retaining wall method. Retaining wall structure characterized by being arranged in the direction toward the front of the surface.
The retaining wall structure according to claim 1 or 2,
A retaining wall structure comprising: a retaining wall block having the major axis X axis and a minor axis Y axis; and the equiaxial length retaining wall blocks are alternately arranged in a horizontal direction.
The retaining wall structure according to any one of claims 1 to 3,
The retaining wall blocks having the major axis X axis and the minor axis Y axis and the retaining wall blocks having the same axial length are alternately arranged in the horizontal direction (horizontal direction), and the retaining wall blocks are arranged in the vertical direction (vertical direction). ), A retaining wall structure characterized by being stacked in multiple stages.
The retaining wall structure according to claim 4, wherein the retaining wall structure includes at least two retaining wall surfaces, and at a corner portion of the retaining wall that is a connecting portion between the two retaining wall surfaces,
A retaining wall block having the long axis X axis and the short axis Y axis is arranged, and the length of the long axis X axis and the length of the lower retaining wall block on the upper side in the vertical direction (vertical direction) of the retaining wall slope. A retaining wall structure, wherein the retaining wall structure is alternately stacked so that the axis X intersects.
In the retaining wall structure according to claim 4 or 5,
An upper retaining wall block and a lower retaining wall block, which are stacked in a plurality of stages in the vertical direction (vertical direction) of the retaining wall slope, are arranged in a staggered manner with a predetermined distance therebetween. Wall structure.
In the retaining wall structure according to any one of claims 1 to 6,
The retaining wall block having the major axis X axis and the minor axis Y axis, and a plurality of projections projecting outward in the outer peripheral direction are provided on the outer peripheral surface of each of the retaining wall blocks having the same axial length, and are arranged in a horizontal plane. A retaining wall structure, wherein the protrusions of adjacent retaining wall blocks are arranged so as to mesh with each other.
The retaining wall structure according to claim 7, wherein the protrusion extends over the entire height of the retaining wall block.
The retaining wall structure according to claim 1, wherein
A length ratio of the major axis X axis and the minor axis Y axis of the retaining wall block having the major axis X axis and the minor axis Y axis is 2: 1;
A retaining wall, wherein the length of the minor axis Y axis of the retaining wall block having the major axis X axis and the minor axis Y axis is equal to the length in the X axis and Y axis directions of the retaining wall block having an equal axis length. Construction.