JP3780308B2 - Retaining wall concrete panel and retaining wall structure - Google Patents

Description

  The present invention relates to a retaining wall concrete panel used for a slope of a concrete retaining wall and a retaining wall structure using the same.

Concrete retaining walls such as earth retaining walls and revetment walls are generally constructed by exposing the concrete surface as it is, but in recent years, the retaining wall has a wall surface that is melted into the surrounding natural landscape. A structure has been proposed.
For example, there is a concrete retaining wall structure in which the wall member is a thinned log (see, for example, Patent Document 1).
In this case, the thinned log is formed on the formwork by on-site assembly with a large number of metal fittings, which increases the work cost.
In addition, there is a slope forming mold and a slope forming method (for example, see Patent Document 2) in which a wall surface member formed of thinned wood is provided on a slope of a bank embankment that is not a concrete retaining wall.
Since the wall members in this case are also formed by assembling thinned materials one by one on the site, the work cost increases.
Japanese Patent Laid-Open No. 8-246481 JP 2001-059222 A

  The present invention produces a concrete wall for a retaining wall of a required unit area with thinned wood without using many types of joint metal fittings, and provides this to form a retaining wall construction formwork on site. An object of the present invention is to achieve labor saving and to provide a retaining wall structure using the retaining wall concrete panel.

In order to solve the above problems, the retaining wall concrete panel of the present invention includes a large-diameter width portion obtained by halving the thinned wood, and a small-diameter width portion formed by cutting an arc portion parallel to the large-diameter width portion. Are formed on the two side surfaces in the vertical direction, and a projection is cut on one side surface of the remaining horizontal direction, and a thick plate is formed by cutting a groove into which the projection is inserted on the other side surface. A panel main body in which a required number of thick plates are stacked vertically in each groove and a reinforcing bar material in which the thinned material is divided in half on the back side of the panel main body are joined perpendicularly to the thick plate. Therefore, the engaging female part is a step that is lowered from the upper surface of the uppermost thick plate of the panel body, and the lower end of the panel main body is lowered from the lower surface of the thick plate so as to be fitted to the engaging female part. It joins so that the engaging male part used as the protrusion may be formed.
Further, a long and narrow groove portion is formed along the longitudinal direction in the large-diameter width portion of the thick plate.
The retaining wall structure of the present invention is such that the retaining wall concrete panel is left as a part of a formwork on the surface of a concrete wall through a joint fitting.

According to the retaining wall concrete panel of the present invention, it is provided as a wall plate having a required unit area firmly joined by a traditional wood joining technique in factory production. The effect of eliminating the outflow of ready-mixed concrete at the time of concrete placement is due to the overlapping of the plates.
In addition, concrete panels mainly made of South Sea wood have led to deterioration of the global environment. Therefore, if the concrete panels for retaining walls of the present invention using thinned cedar are widely used, it is very important to protect the global environment. It has a big effect on.
The retaining wall structure of the present invention blends into the natural landscape with the warmth of wood, and with the passage of time, moss and vegetation are rooted, creating a natural beauty that harmonizes with the natural environment, and after several years the remaining formwork has dropped out. Also, since the irregularities are formed on the concrete surface, the plants grow rooted and green.

An embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, an outline of a concrete panel a for retaining walls is required by connecting a thick plate 3 cut from thinned wood in the vertical direction. A panel body 1 formed in a unit area and a reinforcing bar 2 obtained by halving a thinned material are joined together, and the reinforcing bar 2 is nailed and fixed to the panel body 1 perpendicular to the longitudinal direction of the thick plate 3. At this time, as shown in FIG. 4, the upper end of the reinforcing bar 2 is lowered by a required amount from the panel body 1 to form an engaging female portion 14 that forms a step, and the lower end of the reinforcing bar 2 is connected to the engaging female. An engaging male part 15 is formed which is lowered from the lower edge of the panel body 1 so as to be engaged with the part 14 and becomes a protrusion.
As shown in FIG. 2, the reinforcing bar 2 is joined to the back side of the panel body 1 with nails 13 or screws at substantially equal intervals.
The retaining wall concrete panel has a short width dimension of 900 mm, a total length in the longitudinal direction of 1800 mm, the dimension of the engaging female part is 30 mm from the base of the protrusion, and the engaging male part is slightly shorter than this 30 mm. It is not always this size.
The retaining wall concrete panel is manufactured in a factory or the like, and is assembled and formed into a mold by fitting a predetermined number of engaging female portions 14 and engaging male portions 15 at a work site.
The use posture of the concrete panel for retaining walls is usually set to the longitudinal direction in the horizontal direction, but even if the short width direction is used in the lateral direction, it is not limited in strength as long as it is attached to the retaining wall.

Next, the manufacturing method of the panel body 1 will be described. As shown in FIG. 5, the large diameter width portion 4 of the diameter surface of the thinned material obtained by halving the thinned material, and the cross section half in parallel with the large diameter width portion 4 A thick plate body (so-called drumming material) 7 having two sides of a small-diameter width portion 6 obtained by cutting a circular arc portion 5 is cut, and a protrusion 8 having a rectangular cross section is cut on one side surface of the remaining lateral direction. On the other side, a groove 9 into which the protrusion 8 is inserted is cut.
The protrusions 8 and the grooves 9 include those that are discontinuous or continuous.
As shown in FIG. 4, the panel body 1 is configured such that the required number of thick plates 3 are aligned to the required dimensions at both ends in the longitudinal direction and the width direction is aligned. The protrusions 8 of the plate 3 are inserted and sequentially stacked to form a tongue and groove.
As shown in FIGS. 2 and 3, the reinforcing bar 2 is a semicircular divided surface 12 in which the thinned material is divided in half, and a nail 13, a screw or the like is formed on the formation surface of the small-diameter width portion 6 of the panel body 1. Be joined.

The retaining wall is constructed with an interval corresponding to the thickness of the concrete wall for which the retaining wall concrete panel a is planned, and the retaining wall concrete panels a adjacent to each other in the horizontal direction of the retaining wall concrete panel a. The end surfaces of the respective thick plates 3 are butted together, and if necessary, a lid plate (not shown) is hitting the butting surface vertically from the back side, and is built up in the vertical direction.
As shown in FIG. 6, the retaining wall concrete panel a is formed by inserting the engaging male part 15 of the upper reinforcing bar 2 into the engaging female part 14 of the lower reinforcing bar 2. A plate 16 is formed.
A back frame plate 17 made of plywood is disposed on the inner surface side of the mold U, and the front frame plate 16 is a frame made up of a vertical pipe 19 and a horizontal pipe 20 assembled with a joint bracket 18 and front and rear with a predetermined slope gradient. It is fixed to the body via a connecting fitting 21.

After the concrete 22 is placed in the retaining wall construction thus formed and cured and hardened, the connection fitting 21 is removed from the joint fitting 18, and the vertical pipe 19, the horizontal pipe 20 and the back frame plate 17 are removed and buried. On the surface side of the joint metal 18, the front frame plate 16 made of the retaining wall concrete panel a is joined to the concrete wall surface 23 by bolts (may be a nut depending on the specification of the joint metal receptacle). The retaining wall of the retaining wall structure A is left behind, and the retaining wall is completed by embankment after dismantling the formwork on the back side.
The retaining wall construction form U may be buried without being dismantled.

Next, another embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 7 to 9, an outline of the retaining wall concrete panel b is as follows. A panel body 1 formed in a required unit area by connecting a thick plate 3 formed with a thin plate and a reinforcing bar 2 obtained by halving a thinned material are joined to each other. As shown in FIG. 10, the upper end of the reinforcing bar 2 is lowered by a required amount from the panel main body 1 to form a step as shown in FIG. 14 is formed, and the lower end of the reinforcing bar 2 is lowered from the lower edge of the panel main body 1 so that the lower end of the reinforcing bar 2 is engaged with the engaging female portion 14 to form an engaging male portion 15 that becomes a protrusion.
As shown in FIGS. 8 and 9, the reinforcing bar 2 forms a female portion 10 for lateral connection at the right end of the panel body 1 so that the half of the reinforcing bar 2 protrudes so that the half part protrudes. The left end of the panel body 1 on the opposite side, which is joined with a screw or the like, is a flat portion that becomes a male portion 11 that fits into the female portion 10.

Next, the manufacturing method of the panel body 1 will be described. As shown in FIG. 11, the large diameter width portion 4 of the diameter surface of the thinned material obtained by halving the thinned material, and the cross section half in parallel with the large diameter width portion 4 A thick plate body (so-called drumming material) 7 having two sides of a small-diameter width portion 6 obtained by cutting off the circular arc portion 5 is formed, and further, one or two strips are formed along the longitudinal direction of the large-diameter width portion 4. An elongated groove portion 24 is formed, and a projection 8 having a rectangular cross section is cut on one side surface of the remaining lateral direction, and a groove 9 into which the projection 8 is fitted is cut on the other side surface.
The protrusions 8 and the grooves 9 include those that are discontinuous or continuous.
As shown in FIG. 10, the panel body 1 is configured such that the required number of thick plates 3 are aligned to the required dimensions at both ends in the longitudinal direction and aligned in the width direction, with the lower thickness in the groove 9 of the upper thick plate 3. The protrusions 8 of the plate 3 are inserted and sequentially stacked to form a tongue and groove.
As shown in FIGS. 8 and 9, the reinforcing bar 2 is a half-sectioned dividing surface 12 in which the thinned material is divided in half, and a nail 13 or a screw is used on the formation surface of the small-diameter width portion 6 of the panel body 1. Be joined.

As shown in FIG. 12, the retaining wall concrete panel b inserts the engaging male part 15 of the upper reinforcing bar 2 into the engaging female part 14 of the lower reinforcing bar 2 to form the front frame plate 16. .
After the concrete 22 is placed in the retaining wall construction thus formed and cured and hardened, the connection fitting 21 is removed from the joint fitting 18, and the vertical pipe 19, the horizontal pipe 20 and the back frame plate 17 are removed and buried. On the surface side of the joint metal 18, the front frame plate 16 made of the retaining wall concrete panel b is joined with bolts or nuts and left on the concrete wall surface 23 to construct the retaining wall of the retaining wall structure B. After the formwork on the side is demolished, the retaining wall is completed.
The retaining wall construction form U may be buried without being dismantled.
By providing the slot body 24 in the panel body 1 in this manner, even if the retaining wall concrete panel is weathered, the surface of the concrete is uneven, so that even if the remaining formwork falls off several years later, the plant will take root Greening is fostered.

In addition, instead of the elongated groove portion 24, a triangular gap between the thick plate 3 and the thick plate 3 is used with the small-diameter width portion 6 side of the panel body 1 as the front surface side and the large-diameter width portion 4 side as the back surface side. It is also possible to form triangular ridges on the concrete retaining wall.
The retaining wall structure of the present invention is also provided with a retaining wall concrete panel attached to both front and back surfaces of the retaining wall.
It can be used as a slope for embankment by embankment with a wide range of use, and can also be used as a wall for existing concrete water channels and as a fence for snow and wind protection.
When it is difficult to form a thick plate projection cut from thinned wood depending on the thickness of the selected thinned wood, a groove is dug on both sides and one groove is abruptly projected (not shown) In some cases, the thick plates are joined together as a spring.

It is a perspective view of the concrete panel a for retaining walls which concerns on this invention. It is a rear view of the concrete panel a for retaining walls which concerns on this invention. It is a top view of the concrete panel a for retaining walls which concerns on this invention. FIG. 3 is an enlarged sectional view taken along the line PP in FIG. 2. It is an expansion longitudinal cross-sectional view for shaping | molding description of a thick board. It is a longitudinal cross-sectional view for description of the retaining wall structure A according to the present invention. It is a perspective view of the concrete panel b for the other retaining wall which concerns on this invention. It is a rear view of the other concrete panel b for retaining walls which concerns on this invention. It is a top view of other concrete panels b for retaining walls concerning the present invention. FIG. 9 is an enlarged sectional view taken along the line PP in FIG. 8. It is an expansion longitudinal cross-sectional view for shaping | molding description of a thick board. It is a longitudinal cross-sectional view for description of the other retaining wall structure B which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Panel main body 2 Reinforcing bar 3 Thick plate 4 Large diameter width portion 5 Arc portion 6 Small diameter width portion 7 Thick plate main body 8 Projection 9 Groove 10 Female portion 11 Male portion 12 Dividing surface 13 Nail 14 Engaging female portion 15 Engaging male Part 16 Front frame plate 17 Back frame plate 18 Joining bracket 19 Vertical pipe 20 Horizontal pipe 21 Connecting bracket 22 Concrete 23 Wall surface a, b Retaining wall concrete panel A, B Retaining wall structure U Retaining wall construction formwork

Claims (3)

  A large-diameter width portion obtained by halving thinned wood and a small-diameter width portion formed by cutting an arc portion in parallel with the large-diameter width portion are used as two vertical side surfaces, and a protrusion is formed on one side surface of the remaining horizontal direction. Is formed, and a plate is formed by cutting a groove into which the protrusion is inserted on the other side surface, and each protrusion of the plate is inserted into each groove to stack a required number of thick plates in the vertical direction. The panel body and a step lowered from the upper surface of the uppermost thick plate of the panel body in joining the reinforcing bar obtained by halving the thinned material on the back side of the panel main body perpendicularly to the thick plate And an engagement male part that forms a protrusion lowered from the lower surface of the thick plate so as to be fitted to the engagement female part at the lowermost end of the panel body. Retaining wall concrete panel.   2. The concrete panel for retaining walls according to claim 1, wherein an elongated groove portion is formed along the longitudinal direction in the large-diameter width portion of the thick plate. A retaining wall structure, wherein the retaining wall concrete panel according to claim 1 or 2 is joined and left on a surface of a concrete wall as a part of a formwork via a joint fitting.

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