JP2005054519A - Earth retaining wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earth retaining wall structured to attain the complete utilization of a discarded bar body. <P>SOLUTION: The earth retaining wall disposed along the slope face of the ground is provided with an earth retaining wall body with a plurality of discarded concrete bar bodies lined up vertically, a foundation part, coping concrete, and a backfilling member. At least one of the discarded concrete bar bodies is cut in a prescribed length, and an excess discarded bar body fragment formed in cutting is included in the backfilling member. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a retaining wall, and more particularly to a retaining wall used for reinforcing a ground such as a rock.

  Recently, from the viewpoint of saving resources and energy, there has been proposed a retaining wall that employs a concrete waste rod-like body such as a concrete waste telephone pole or a concrete sleeper after the removal of the retaining wall body of the retaining wall ( For example, see Patent Document 1 below).

Japanese Patent No. 3200031

  The retaining wall of Patent Document 1 is provided along the slope 2 of the ground 1 as shown in FIG. 1 attached to the present case, and is a concrete waste rod shape cut to a predetermined length as necessary. The retaining wall body is composed of a body 6 and a backfilling member 3 provided between the retaining wall body and the slope 2. However, the conventional retaining wall of the prior art still has a problem that the waste rod-like body is not completely used.

  Then, the subject of this invention is providing the earth retaining wall which achieves the full utilization of a disposal rod-shaped object in view of the said problem.

  As a result of intensive investigations to achieve the above-mentioned problems, the present inventor has found that the waste rod-like fragments that have been discarded in the conventional method, that is, the extra waste rod-like shapes produced when cutting the concrete waste rod-like bodies into a predetermined length. It has been found that the above problem can be achieved by using a body fragment as a backfilling member, and the present invention has been completed based on this finding.

That is, this invention provides the earth retaining wall arrange | positioned along the slope of a ground. The retaining wall of the present invention is a retaining wall body formed by juxtaposing a plurality of concrete waste rods in the vertical direction,
A concrete long member formed so as to form a concave groove along the longitudinal direction is embedded in the ground, and the lower end of the waste rod-like body is accommodated in the concave groove, and raw concrete is poured into the lower end. A base formed to secure the part;
Caps concrete in which the upper ends of the waste rods are connected to each other by placing concrete without using a mold,
A backfill member provided between the waste rod-like body and the slope, and
At least one of the concrete waste rod-like bodies is cut to a predetermined length, and an extra waste rod-like piece generated during the cutting is included in the backfilling member. .

  According to the present invention, there is a technical effect that the waste rod-like body can be almost completely reused by using the above-mentioned requirements, particularly the waste rod-like piece piece that has been discarded so far, as a back-filling member. be able to.

  Next, the present invention will be described in more detail by describing embodiments of the present invention with reference to the attached drawings.

As shown in FIGS. 3 to 6, the retaining wall 15 of the present invention is disposed along the slope 2 of the ground 1, and the retaining wall main body 16, the foundation 18, the cap concrete 13, and backfilling And a member 3.
The retaining wall body 16 The retaining wall body 16 is formed by arranging a plurality of concrete waste rod-like bodies 6 side by side in the vertical direction.
As the rod-shaped body 6 used in the present invention, it is possible to use a discarded utility pole, a discarded sleeper, etc., and use it as it is in the discarded state or the shape, dimension, etc. of the ground to be protected It can be used after being cut into a predetermined length so as to match. The cut waste rod-like piece can be used as a back-filling member. In this specification, the term “longitudinal direction” usually includes a vertical direction as shown in FIG. 3 and a direction with a maximum inclination angle of 6% from the vertical line to the ground side, preferably 3-5% inclination. Means the direction of the angle.
Further, the rod-like bodies 6 may be arranged side by side in a state where their outer peripheral surfaces are in contact with each other or in a non-contact state.
Further, the rod-shaped body 6 forms a row substantially parallel to the base portion of the slope 2, and this row may be singular or in contact with each other in the direction intersecting the base line 22. Alternatively, a plurality can be arranged in a non-contact state. In the present specification, the term “row” refers to a state in which the rod-like bodies 6 are arranged substantially parallel to the base portion of the slope 2.

Foundation part and concrete long member foundation part 18 is composed of a concrete long member 11 and hardened concrete 14, and is a concrete long part formed so as to form a ditch in the longitudinal direction. The member 11 is embedded in the ground, and the lower end portion of the waste rod-like body 6 in the vertical direction is accommodated in the concave groove, and the lower end portion is fixed by pouring ready-mixed concrete.
The concrete long member 11 is embedded in the ground in a state in which the lower end portion of the disposal rod-like body 6 arranged in parallel in the vertical direction is accommodated.
For example, as shown in FIG. 2, the concrete long member 11 can have two openings 12 at both ends thereof and two side walls 17 in the longitudinal direction. As the long concrete member 11 shown in FIG. 2, a commercially available product [Long U] that is generally used as a drainage channel in mountainous areas or rice fields can be used. Also, custom-made products can be adopted according to the shape and dimensions of the ground. Of course, a long concrete member 11 with both ends closed can also be used in the present invention.
The concrete long member 11 is installed so that the base of the slope 2 and the longitudinal direction of the long member are substantially parallel (see, for example, FIGS. 3 to 5), or It can be installed so that the base of the slope 2 and the longitudinal direction of the long member intersect (for example, substantially orthogonal) [for example, FIG. 6], in either case, the concrete long member 11 A plurality of the long concrete members 11 can be used while the side portions [for example, the side wall 17 of FIG.

The cap concrete 13 is formed by driving concrete without using the form 4 (see FIG. 1) as used in the prior art, and the upper end of the rod-shaped body 6 arranged in parallel in the vertical direction. It has a function to connect the parts to each other. Due to such concrete pouring, the ready-mixed concrete flows into at least a part of the gap between the rod-shaped bodies 6, and the rod-shaped bodies can be connected to each other by hardening thereof. Also, when the rod-shaped bodies are electric poles, Hardened concrete is filled in the inner hollow portion, and thereby the strength of the retaining wall main body can be increased. The gap between the rod-like bodies 6 is not completely filled with hardened concrete, but the gap between the rod-like bodies 6 that are not filled with the hardened concrete serves as a water passage.

The back-filling member and the concrete waste rod-like body piece back-filling member 3 are arranged between the waste rod-like body 6 juxtaposed in the vertical direction and the slope 2, and fill the space between them. It has a function. Usually, back-filled crushed stone is used as the material for forming the back-filling member 2, and waste materials such as reinforcing bars can also be used.
As described above, at least one of the concrete waste rod-like bodies 6 is cut to a predetermined length, and the waste rod-like body fragments generated during the cutting are included in the backfill member 3. Yes. Preferably, the waterproof concrete 19 is laid on the foundation portion of the backfilling member 3.

Next, the embodiment shown in each figure will be described. FIG. 3 shows the first embodiment, FIG. 4 shows the second embodiment, FIG. 5 shows the third embodiment, and FIG. 6 shows the fourth embodiment.
First Embodiment As shown in FIG. 3, the retaining wall 15 of the first embodiment can be manufactured as follows.
First, a slope 2 is formed on the ground 1 requiring reinforcement by embedding or cutting if necessary. Next, the ground located in front of the ground 1 is excavated, and a plate-like base 5 in which a mortar is laminated on a basic crushed stone is laid.

  Next, the concrete long member 11 shown in FIG. 2 is installed on the base 5. The long concrete member 11 is placed so that the base of the slope 2 and the longitudinal direction of the long concrete member 11 are substantially parallel, and the entire length thereof is embedded in the ground. To do.

  Next, in the embedded concrete long member 11, a plurality of concrete waste power poles 6 are vertically oriented, the lower ends thereof are inserted into the concrete long member 11, and the outer peripheral surfaces thereof are mutually connected. They are arranged side by side so as to form a row that is in contact with the base of the slope 2 and substantially parallel to the base. Two rows are arranged side by side. Therefore, the rod-shaped bodies abut each other in a direction substantially parallel to the slope 2 base, and also abut each other in a direction intersecting (for example, substantially orthogonal) with the slope 2 base. Yes.

Next, while holding the retaining wall main body 16 composed of the concrete vertical waste power pole 6 in the above-described state, each mold is placed on the base 5 on the two openings 12 of the concrete long member 6. Set each frame material 7, fill concrete into the concrete long member 6, and after hardening the ready-mixed concrete, remove the two mold materials 7 and fix the lower end of the retaining wall main body 16 [See FIG. 1 (B), which is a plan view of the mold 4 for producing the retaining wall].
Thus, in the present invention, only two mold materials 7 are used. On the other hand, in the conventional retaining wall retaining wall [see (a) in FIG. 1], as shown in (b) in FIG. 1, it is necessary to install / remove four formwork members 7. Therefore, the construction period of the installation / removal process of the formwork of the present invention is only half that of the prior art, and as a result, it can have a technical effect that the entire construction period can be shortened. In addition, if the long concrete member 11 having both ends in the longitudinal direction is closed without having the opening 12, the formwork material is completely unnecessary, and the construction period can be further shortened. it can.
As described above, the base portion 18 can be formed.

Next, the backfill member 3 can be formed by filling the space between each rod-like body 6 and the slope 2 of the ground 1 with backfill crushed stone.
Finally, the cap concrete 13 can be formed from above the retaining wall main body 16 by driving a predetermined amount of concrete without using a formwork. In this first embodiment, since the waste electric pole is used as the concrete waste rod-like body, as described above, the hollow portion in the waste electric pole is filled with the hardened concrete, thereby increasing the strength of the retaining wall main body. Can be made. Further, as described above, the gap between the waste power poles is not completely filled with the hardened concrete, but the gap between the waste power poles that are not filled with the hardened concrete serves as a water passage.

  Thus, in the present invention, the mold is not used for fixing the upper end of the waste rod-like body, and therefore, this processing step is compared with the conventional technique in which the installation / removal of the mold is necessary. Therefore, the technical effect that the entire construction period can be shortened can be obtained.

  In the retaining wall of the first embodiment manufactured as described above, that is, the retaining wall 15 arranged along the slope 2 of the ground 1, the base portion of the slope 2 and the longitudinal direction of the long member 11 are Are disposed in parallel in the vertical direction, and two rows of the disposal rod-like bodies 6 are arranged in parallel with their outer peripheral surfaces in contact with each other.

Second Embodiment Next, the retaining wall 15 of the second embodiment will be described with reference to FIG.
This second embodiment can be manufactured by the same method as the first embodiment described above. However, instead of the waste rod-like body 6 as the waste power pole in contact with the first embodiment, the waste rod-like body 6 as the waste power pole according to the second embodiment is made of concrete in a non-contact state with each other. It is inserted into the long member 11 (see (b) of FIG. 4). Further, after the formation of the base portion 18 (that is, fixing the lower end portion of the vertical waste power pole 6), another waste rod-like body, for example, the waste power pole 6 'is directed in the lateral direction (horizontal direction) and the back-filling member Stack between 3) and the vertical waste rod 6. After arranging one horizontal waste power pole 6 ′, backfilled crushed stone is filled between the horizontal waste power pole 6 ′ and the slope 2. By repeating this process, it is possible to stack the lateral waste utility poles 6 ′ in a desired number of stages and to form the backfill member 3. Instead of the horizontal waste power pole 6 ′, a horizontal waste sleeper 6 ′ can be used. Therefore, in the second embodiment, the retaining wall main body 16 is composed of the vertical waste bar 6 and the horizontal waste bar 6 ′.

In the second embodiment, when the horizontal waste rod-shaped body 6 ′ stacked in the horizontal direction is a utility pole, the utility pole is a hollow body and can therefore function as a buffer material against impact. On the other hand, when the transverse waste rod-shaped body 6 ′ is a sleeper, the sleeper has a compressive strength higher than that of the utility pole, so the compressive strength of the retaining wall increases.
Furthermore, since the vertical waste power pole 6 is in a stable state in contact with the side wall 17 of the concrete long member 11 (see FIG. 4), the four directions required when using the formwork 4a by the conventional method As a result, it is possible to omit a part of the scaffolding, thereby omitting the steps necessary for the installation / removal of the scaffolding, and as a result, it is possible to produce a technical effect that the entire construction period can be shortened.

  In the second embodiment, the horizontal waste rod-like body 6 ′ is used as it is in the discarded state or the ground to be protected, like the vertical waste rod-like body 6. It can be used by cutting to a predetermined length so as to match the shape, dimensions, etc. Note that the cut waste rod-like body piece can be used for the backfilling member 3.

  In the retaining wall 15 of the second embodiment formed in this way, the waste bar-like bodies 6 arranged in parallel in the vertical direction have their outer peripheral surfaces in a non-contact state with each other. Between the waste bar-like bodies 6 arranged side by side and the backfilling member 3, another concrete waste bar-like body 6 'is stacked in the lateral direction.

Third Embodiment The retaining wall 15 of the third embodiment includes the same components as those of the first embodiment. However, in the retaining wall 15 of the third embodiment, instead of the plurality of rows of the longitudinal bars 6 in the first embodiment, the longitudinal bars 6 as sleepers are used in a single row [FIG. ,reference〕.

  The retaining wall of the third embodiment is used as a relatively small retaining wall. As described above, since the sleepers have a higher compressive strength than the utility poles, the compressive strength of the retaining wall does not become a problem even when arranged in a single row.

Fourth Embodiment Next, an earth retaining wall 15 according to a fourth embodiment will be described with reference to FIG.
As shown in FIG. 6, the retaining wall 15 of the fourth embodiment includes the retaining wall main body 16, the foundation portion 18, the cap concrete 13, and the backfill member 3, as in the first embodiment. I have.
However, the retaining wall 15 of the fourth embodiment is different from the first embodiment in the following points. That is, in the first embodiment, the concrete long member 11 is arranged so that the longitudinal direction of the concrete long member 11 and the base portion of the slope 2 are substantially parallel, In the fourth embodiment, the concrete long member 11 is arranged so that the longitudinal direction of the concrete long member 11 and the base portion of the slope 2 intersect each other. Furthermore, in the fourth embodiment, the vertical waste rod-like bodies 6 as the waste power poles form rows that are substantially parallel to the base 2 of the slope 2 with their outer peripheral surfaces abutting each other. Three rows are arranged in parallel in the direction intersecting the plane 2 base, and another concrete waste rod-shaped body 6 ″ is placed in this gap in parallel with the plane 2 base. It is stacked in the direction.
That is, in the fourth embodiment, three rows of vertical waste power poles 6 are arranged in parallel, and in the meantime, in the order from the ground side, a horizontal waste rod-like body 6 ″ as a waste power pole, and then a horizontal waste pole shape as a waste sleeper The body 6 '' is stacked. Therefore, in this 4th Embodiment, the retaining wall main body 16 is comprised from the vertical direction waste rod-shaped body 6 as a utility pole, and the horizontal direction waste rod-shaped body 6 '' as a utility pole and a sleeper. In addition, this 4th Embodiment can show the compressive strength which a sleeper has, and the impact strength which a hollow utility pole has. Further, in the fourth embodiment, three concrete long members having the same dimensions are used, but any size and any number of concrete long members 11 can be used.

  In the fourth embodiment, the horizontal waste rod-like body 6 '' is used as it is in the discarded state or the ground to be protected, like the vertical waste rod-like body 6 described above. It can be used by cutting it into a predetermined length so as to match the shape, size, etc. It should be noted that the cut waste rod-like piece can be used for the back-filling member 3.

  The retaining wall 15 of the fourth embodiment can be manufactured by the same method as that of the first embodiment. However, after three rows of the vertical bars 6 are arranged and the lower ends thereof are fixed, the horizontal bars 6 '' are stacked in the gaps between the vertical bars 6 in the horizontal direction.

  The retaining wall of the present invention can be used in various applications such as a river revetment retaining wall, a general retaining wall for roads, a retaining wall for preventing falling rocks, and a retaining wall for preventing debris flow.

(A) is a side view of the retaining wall, and (b) is a plan view of a formwork used for manufacturing the retaining wall of (a). The perspective view which shows the concrete long member used for manufacture of the earth retaining wall of this invention. 1A and 1B show a first embodiment of a retaining wall according to the present invention, in which FIG. 1A is a side view including a partial cross section, and FIG. The 2nd Embodiment of the earth retaining wall of this invention is shown, (A) is a side view including a partial cross section, (B) is a front view. The side view which shows 3rd Embodiment of the retaining wall of this invention containing a partial cross section. The 4th Embodiment of the earth retaining wall of this invention is shown, (A) is a side view including a partial cross section, (B) is a cross-sectional view taken along the line AA of (A).

Explanation of symbols

  1: Ground, 2: Slope, 3: Back-filling member, 6: Longitudinal rod made of concrete, 11: Long member made of concrete, 13: Shaded concrete, 14: Hardened concrete, 15: Retaining wall, 16 : Retaining wall body, 18: foundation

Claims (5)

A retaining wall located along the slope of the ground,
A retaining wall main body in which a plurality of waste rods made of concrete are arranged in parallel in the vertical direction;
A concrete long member formed so as to form a concave groove along the longitudinal direction is embedded in the ground, and the lower end of the waste rod-like body is accommodated in the concave groove, and raw concrete is poured into the lower end. A base formed to secure the part;
Caps concrete in which the upper ends of the waste rods are connected to each other by placing concrete without using a mold,
A backfill member provided between the waste rod-like body and the slope, and
At least one of the concrete waste rod-like bodies is cut to a predetermined length, and an extra waste rod-like piece generated during the cutting is included in the backfilling member. The retaining wall. 2. The retaining wall according to claim 1, wherein a base portion of the slope and a longitudinal direction of the long member are substantially parallel. 3. The retaining wall according to claim 1, wherein the waste rod-like bodies arranged in parallel in the vertical direction are arranged in parallel with their outer peripheral surfaces in contact with each other. The waste rods arranged side by side in the vertical direction have their outer peripheral surfaces in non-contact state with each other,
3. The waste rod-like bodies arranged side by side in the vertical direction and another concrete waste rod-like body stacked in a lateral direction between the backfilling member and claim 1 or 2. Retaining wall. A base line that is a boundary line between the base portion of the slope and the ground on which the retaining wall is installed, and a longitudinal direction of the long member intersect,
The waste rod-like bodies arranged side by side in the vertical direction have their outer peripheral surfaces in contact with each other to form a row substantially parallel to the base line, and the row intersects the base line, The earth retaining retainer according to claim 1, wherein a plurality of concrete waste rod-like bodies are stacked side by side in the lateral direction in parallel with the base line. wall.