JPS5939574B2 - Slope construction method using step-up type units - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, as construction methods used as means for artificially protecting slopes, there have been known block wall construction methods, slope construction methods, mortar spray construction methods, metal mesh construction methods, and others.

It can be said that the first two methods are mainly concerned with structural protection, and the latter two are mainly concerned with superficial protection.

The block-like wall construction method constructs a strong masonry block-like wall, and although it has sufficient structural strength, it is time-consuming to construct.

The frame construction method involves embedding lattice-like units on a slope, and although it is much easier to construct than the block-like wall construction method, its structural strength is low, and it can only be used on gentle slopes. could not.

The mortar spraying method and the metal mesh construction method are mainly effective for superficial protection such as preventing rockfall, and no structural strength can be expected, and they can be used in limited cases such as when the wall itself is made of solid rock. used for limited purposes.

An object of the present invention is to provide a slope construction method that is easy to construct, has high structural strength, and can be used satisfactorily even on steep slopes.

As a result of research, the inventor of the present invention has developed a special new legal framework unit and uses this to achieve the above purpose.
In other words, we succeeded in taking advantage of the advantages of the masonry block wall construction method while also taking advantage of the advantages of the vertical frame construction method.

This special new frame unit is basically a columnar body with a parallelogram bottom and has steps for fitting and connecting.

A new three-dimensional slope is constructed by successively fitting and joining these steps and stepping up.

In other words, in the construction method of the present invention, as a new unit, the middle bottom surface 1
is a parallelogram columnar body, and (1i) the upper part of the columnar body is cut at an angle of 2 with respect to the bottom surface so as to create a height difference on the side surface 3.3' that stands on the short side of the base parallelogram. (11p From the base parallelogram to the higher side 3
A plane 4 perpendicular to the bottom surface 1 from which an isosceles triangle is cut out, with the short side of the side as the base and one of the long sides forming an acute angle with the short side as one of the equilateral sides, and this vertical part 4 and the slope 2. A horizontal step step in the form of an isosceles triangle is formed by notching a space that is divided by a horizontal plane 5 whose height is lower than the lowest point on the intersection line and includes the apex of the slope 20, and (IV ) said higher side 3 and lower side 3'
A unit is used in which a groove 6,6' extending in the height direction is provided in the center of the unit.

The construction method of the present invention consists of: (A) preparing a plurality of each of two types of units x and y that are mirror images of each other; (B) units X and y being alternately arranged on their sides 3 or 3' Place the comrades face-to-face in close contact with each other in parallel to form a first-stage unit layer, and construct a second-stage layer on the first-stage layer in the same manner as in (0 above B). 2 at the close contact part of the side 3 comrades
The lower part of the close contact portion of the side surfaces 3' of the second layer shall be fitted into the rhombus-shaped horizontal step recess formed by the two types of equilateral triangular horizontal step steps. Fill the hole formed by the grooves 6.6' and 6.6' on the opposing side surface with adhesive reinforcing material, and (2) repeat the steps (B), (C), and CD) as many times as necessary, and fill in any suitable The required amount of earth and sand is backfilled between each layer in stages.

Such a step-up unit (=SU
The slope construction method using the SU type unit will be explained below with reference to the drawings.

FIG. 1 shows a perspective view of an example of an SU type unit.

In this example, the bottom surface 1 is horizontal, the side surfaces 3.3', 7.degree. 7' are perpendicular to the bottom surface 1, and the slope 2 is perpendicular to the side surface 7.7'.

FIG. 2 is a perspective view of a portion of the SU type unit shown in FIG. 1, stepped up from the first layer to the fourth layer.

The groove 6.6' is not shown in this figure.

FIG. 3 shows a plan view of FIG.

The holes formed by the grooves 6, 6' are filled with mortar and steel rods as bond reinforcing materials.

Figure 4 is a perspective view showing an example of actually constructing a legal framework using the SU type unit shown in Figure 1, and Figure 5 is a perspective view of the A
-A sectional view.

The construction procedure for this example is as follows.

(1) SU type unit in Figure 1) , a round steel bar of an appropriate length with a diameter of 19 mm, and mortar are prepared.

(2) On the excavated and leveled foundation surface, SU type units (x+y) are alternately placed in close contact with each other with their sides 3 or 3' facing each other to form the first stage unit layer.

(3) A round steel rod is passed through the hole formed by the grooves 6', 6' on the facing sides 3', 3', and a portion of the rod is driven into the ground.

Then fill it with mortar and secure it in place.

(4) Filling with local earth and sand.

The surface that connects the facing parts of the side surfaces 3 will be sloped along the slope 2, and the area beyond this surface will be finished horizontally.

(5) Fit the close contact portion of the side surfaces 3' of the second layer into the diamond-shaped horizontal step recess formed by two types of isosceles triangular horizontal step steps in the close contact portion of the side surfaces 3 of the first layer. , a similar second tier is constructed on top of the first tier.

(6) A round steel rod is passed through the hole formed by the grooves 6.6' and 6.6' on the opposite sides of the four units thus fitted and connected, and a portion of the rod is driven into the ground.

Then fill it with mortar and secure it in place. (7) Perform the same filling as in (4) above.

(8) Repeat the above steps (5×6×7) four more times to obtain a slope protection slope of the required height.

The slope tS of the entire slope is 1/1.2, but the slope tr of the soil exposed surface is 172 at maximum.

(9) Appropriately plant vegetation on exposed soil surfaces to create greenery.

The slope frame work obtained in this way can be obtained using the step-up method with the same amount of construction time as normal slope frame work, while the fitting connection in the diamond-shaped horizontal step recess,
Thanks to the adhesive reinforcing material filled in the holes that pass through the joint, it has a structural strength comparable to that of block wall construction.

Although the slope of the exposed earth and sand surface can be determined appropriately, the maximum slope is the slope 2 of the unit, which is much gentler than the slope of the entire slope, and is highly stable.

Further, a part of the exposed earth surface can be made horizontal (see the above embodiment), which is very advantageous especially in terms of workability during construction and vegetation.

In other words, the entire slope, which is steep, can be protected using the slope frame construction method, which is strong, stable, and easy to construct.

Visually and aesthetically, the slope construction obtained by the construction method of the present invention gives a regular three-dimensional effect rich in shadows, and in combination with the vegetation, it has an excellent effect.

The SU type unit of the construction method of the present invention can be modified in various ways within the scope of the claims, and the present invention also includes methods using such units.

The slope 2 of the SU type unit can have a horizontal portion in one part.

For example, as shown in FIG. 6, when the slope 2 is perpendicular to the side surface 7.7', either the step side of the slope 2 or the side surface 3' side or Horizontal portion 8 at the edge of the step step side and side 3' side
, 8/.

Further, as shown in FIG. 7, a triangular horizontal portion 9 congruent with the isosceles triangle of the step height may be provided at the end of the side surface 3'.

These horizontal portions on the slopes 2 further improve workability.

Therefore, the "slope 2" referred to in this specification only needs to be a slope that can provide a desired slope, and does not need to be a single plane with a constant slope.

The same can be said about the bottom surface 1.

The bottom surface 1 must have a portion that fits into the step recess, but other portions may be cut out as appropriate.

FIG. 8 shows an SU type unit in which the bottom surface 1 is cut away on a plane parallel to the slope 2, leaving the fitting portion 10.

This unit is particularly advantageous in that it is lightweight and in terms of workability when shaping exposed soil surfaces to a constant slope.

Therefore, "bottom surface 1" as used herein also includes the case where it means unit orthogonal projection.

[Brief explanation of drawings]

Fig. 1 is a perspective view of one example of the SU type unit, Fig. 2 is a perspective view showing a part of the SU type unit of Fig. 1 in a stepped-up state, and Fig. 3 is a perspective view of a part of the SU type unit of Fig. 2. FIG. Figure 4 is a perspective view showing an example of actually constructing a legal framework using the SU type unit shown in Figure 1, and Figure 5 is a perspective view of the A
-A sectional view. 6 to 8 are perspective views of several other examples of SU type units.

Claims (1)

[Scope of Claims] 1(A) Unit: (i) A columnar body whose bottom surface 1 is a parallelogram, (1
[) The upper part of the columnar body is cut by an inclined slope 2 with respect to the base 1 so as to create a height difference between the sides 3 and 3' standing on the short side of the base parallelogram, and (lli) the base parallelogram A plane 4 perpendicular to the base 1 is cut out from the shape, with the short base on the higher side 3 side and one of the equilateral sides being a part of the long side that forms an acute angle with the short side. A space that is divided by a horizontal plane 5 whose height is lower than the lowest point on the intersection line of the vertical plane 4 and the slope 2, and includes the apex of the slope 2,
The notch forms a horizontal step in the shape of an isosceles triangle, and the high side surface 3 and the low side surface 3' have a groove 6°6 extending in the height direction in the center thereof. ' are provided respectively. Two types of units with shapes that are mirror images of each other x
, y, prepare several units of each, (B) Units x and y alternately, each side 3
Alternatively, the comrades 3' are directly facing each other in close contact with each other in parallel to form the first stage unit layer, and (0) the second stage layer is constructed on the first stage layer in the same manner as B above, and here the first stage unit layer is D) In this way, the lower part of the side surface 3' of the second layer is fitted into the diamond-shaped horizontal step recess formed by the two types of isosceles triangular horizontal step steps in the close contact portion of the side surface 3 of the second layer. Fill the holes formed by the grooves 6.6' and 6.6' on the opposite sides of the four units that have been fitted together with an adhesive reinforcing material, and repeat the steps B, C, and D as many times as necessary. A method of construction using a step-up type unit, which is characterized by backfilling the necessary amount of earth and sand between each stage at any appropriate stage. 2. The method according to item 1 above, in which a unit is used in which the slope 2 is perpendicular to the side surfaces 7, 7' standing on the long sides of the parallelogram of the base 1. 3. As a unit, use one in which the slope 2 has horizontal portions 8, 8' at either one end of the step step side or the side surface 3' side, or at both ends of the step step side and the side surface 3' side. The method described in 2. 4. The method according to item 1 above, in which the slope 2 has a triangular horizontal portion 9 congruent with the isosceles triangle of the step at the end of the side surface 3' as the unit. 5. The method according to any one of items 1 to 4 above, wherein the lower part of the columnar body is a notch, leaving at least the part 10 where it fits into the step recess.