JP2772886B2 - Construction method of concrete dam with masonry pattern - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a concrete dam with a masonry pattern.

[0002]

2. Description of the Related Art A conventional concrete dam construction method is as follows.
As shown in FIG. 12, a plurality of single form panels 1 are arranged in a vertical direction and a horizontal direction to form a large form form 2, and the large form form 2 is fixed on the back side with a thick material 3. After forming the lowermost concrete skeleton 4 of the concrete dam with the frame 2, the lower part of the large-frame formwork 2 is pressed against the upper part of the concrete skeleton 4 and set, and the concrete 5 is poured on the upper side of the concrete 4; The concrete dam is constructed by forming the concrete skeleton while sequentially turning the large formwork 2 upward from below and diverting it.

By the way, recently, in order to make use of the natural scenery,
It has been required to stop leaving the surface of the dam exposed to concrete and apply various patterns.

Conventionally, a method of forming a concrete frame while moving a formwork apparatus in the vertical direction in order to form a pattern on a vertical surface of concrete has been disclosed in Japanese Patent Laid-Open No. Hei 1-2.
No. 14,662 and Japanese Patent Publication No. 60-3592 have been proposed.

However, Japanese Patent Application Laid-Open No. 1-214662 discloses a method of forming a patterned concrete frame by extending a patterned sheet long and downward on a formwork apparatus, or separately forming a pattern for a joint. There is a trouble of having to prepare the attached sheet and the support material, and the workability is poor. Japanese Patent Publication No. 60-3592 discloses concrete having corrugated ridges in a certain direction, so that a concrete surface having a complicated pattern cannot be formed.

Therefore, these conventional techniques cannot be used in the above-described method of constructing a concrete dam. At present, a large formwork 2 is lifted and a pattern forming plate is attached to a single formwork panel 1 every time it is converted. I was For this reason, workability is poor,
Construction efficiency was low.

[0007]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a concrete dam can be constructed without raising a pattern forming plate every time the large assembly form is lifted up from the bottom to the upper side of the diversion, and the masonry is formed on the surface of the dam. It is an object of the present invention to provide a method of constructing a concrete dam with a masonry pattern in which a pattern is formed.

[0008]

According to the present invention, there is provided a method for constructing a concrete dam with a masonry pattern, in which a plurality of single form panels are vertically and horizontally arranged to form a large formwork. A method of constructing a concrete dam by fixing a large formwork on the back side with thick ends, forming the concrete frame while sequentially turning up the large formwork from below to diverting, and constructing a concrete dam. Attach the masonry pattern forming plate to each form panel of this form, and form the lowermost concrete frame of the concrete dam with this large formwork. Then, at the bottom of the bottom formwork panel of this large formwork, It is characterized by building a concrete dam with a masonry pattern by attaching a single formwork panel with a frame to the part, raising this large formwork from bottom to top sequentially and diverting it to form a concrete frame. It is intended to.

[0009]

As described above, according to the method of constructing a concrete dam with a masonry pattern of the present invention, a masonry pattern forming plate is attached to each form panel of a large formwork. After the frame is formed, a single form panel with a frame on the outer periphery of the inner surface is attached to the lower part of the bottom form panel of the large formwork, and the large formwork is lifted up from the bottom in order and converted. Since the concrete skeleton is formed, the large braided formwork can be set without matching the masonry pattern at the upper end of the lower concrete skeleton, and workability is good. Can be set up. Therefore, a concrete dam with a stonework pattern can be efficiently constructed by sequentially extending the concrete skeleton with a stonework pattern upward while preventing spillage.

Further, as described above, a single form panel having a frame on the outer peripheral portion of the inner surface is attached to the lower portion of the lowermost form panel of the large formwork, and the upper end of the previously formed concrete frame is attached. Since it is not necessary to match the masonry pattern, the masonry pattern forming plate to be attached to each form panel of the large formwork is not specified, and various masonry pattern forming plates can be attached, and accordingly, the concrete dam to be constructed Stone patterns of different patterns can be formed on the surface.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the method for constructing a concrete dam with a masonry pattern according to the present invention will be described. First, an example of a formwork apparatus for carrying out this construction method will be described with reference to the drawings. In FIGS.
0mm) Form panel 11 and short length (width 300mm, length 75)
0 mm) formwork panel 12, two formwork panels 11 longer than the upper side in the horizontal direction, and then three shorter formwork panels 12, longer formwork panels 11, and three shorter formwork panels 12. This is a large group formwork in which five sheets are alternately arranged in the vertical direction.
Is fixedly supported by a thick end member 14 via a hook bolt 13 on the back surface. A masonry pattern forming plate is attached to the long form panel 11 and the short form panel 12 of the large form frame 10. That is, FIG.
The grooved frame 17 is fixed around the face plate 16 with bolts and nuts as shown in FIG.
Inside, a masonry pattern forming plate 20 having a flange 18 around it and having three uneven patterns 19 in the longitudinal direction is attached. As shown in FIG. 4, the short form panel 12 has a groove type frame 23 formed by bolts and nuts on opposite long sides and one short side of the face plate 22. A concave and convex pattern surface 25 fixed to the groove type frame 23 and having a flange 24 at a long side and one short side of the side edge, and cut in half in the longitudinal direction, and one concave and convex pattern surface 26, an end closing member 29 is inserted into the back side of the cut end 28 of the masonry pattern forming plate 27 so that the cut end 28 is supported and the back side is closed, and the groove is formed. The frame 23 is fixed to the side surface of the opening end.

Next, a method of constructing a concrete dam with a masonry pattern according to the present invention using the formwork apparatus configured as described above will be described. First, as shown in FIG. 5, in order to form the lowermost concrete frame on the foundation C, the large braided formwork 10 of the formwork apparatus was removed from the upper part of the thickened material 14 and assembled and fixed to the lower part, and then fixed. 14 and the anchor 32 set on the foundation C are connected, a nut 34 is fastened to the seabolt 33, and a tie rod 37
It is set at a predetermined angle by the cutting beam 38. Then, the concrete 36 is poured into the inside of the large set formwork 10 to the level indicated by the dashed line to form the lowermost concrete skeleton 30. When the concrete frame 30 is solidified, the formwork device is removed, the large-form formwork 10 is removed from the lower portion of the end thickened material 14 and re-assembled as shown in FIG. In the lower part of the form panel 11 of FIG.
As shown in the figure, a single form panel 11 having only the grooved frames 17 and 23 on the inner peripheral edge and having no masonry pattern forming plate,
12 is mounted as shown in FIG. This formwork device is connected to the lowermost concrete frame 30 as shown in FIGS.
The grooved frames 17 and 23 of the lowermost unit form panels 11 and 12 abut on the periphery of the stonework pattern at the upper end portion of the concrete frame 30 inside the grooved frames 17 and 23. Then, seam bolts 33 are connected to anchors 32 buried in the concrete frame 30 at the middle and high portions of the thick members 14 of the large-frame formwork 10, and buried in the upper portion where concrete is to be poured. A dummy bolt 33 'is connected to the anchor 32' arranged so as to be inserted therein, and a nut 34 is fastened to the sea bolt 33 and the dummy bolt 33 'to support the large assembled form 10 on the upper end of the concrete frame 30; In the lower part, the jack bolt 35 is brought into contact with the lower end of the concrete frame 30 to make the entire end thicker member 14 parallel to the inclined surface 31 of the concrete frame 30. In this state, when the concrete 36 is poured on the upper side of the concrete frame 30 as shown by the solid line, the sloping surface 3 of the masonry pattern can be formed while preventing the nodding from leaking.
1 can be extended upward.

[0013] As shown in FIG. 10, the lowermost single mold of the large-frame formwork 10 is formed around the masonry pattern at the upper end of the inclined surface 31 of the concrete skeleton 30 formed by concrete casting. The grooved frames 17, 23 of the frame panels 11, 12 are brought into contact with each other, and the grooved frames 1
By releasing the masonry pattern at the upper end of the inclined surface 31 of the concrete skeleton 30 inside the large frame 7 and 23, the large frame 10 is set, so that the large frame is lifted and converted as in the related art. There is no need to attach a pattern forming plate to the formwork panels 11 and 12, and the lower concrete
It is not necessary to match the pattern forming plate with the masonry pattern at the upper end of the inclined surface 31 of the above, so that the work is improved, and the concrete 36 can be immediately poured on the upper side of the concrete frame 30 as shown by the solid line. Therefore, the concrete dam with a masonry pattern can be efficiently constructed by successively extending the concrete frame 30 upward by repeating this.

Although the masonry pattern of the masonry is formed on the inclined surface of the concrete dam in the above embodiment, it is different if the uneven pattern surfaces 19, 25, 26 of the masonry pattern forming plates 20, 27 are changed. The masonry pattern of the pattern can be formed on the inclined surface of the concrete dam. Further, in the above embodiment, the grooved frame 1 is provided on each of the form panels 11 and 12 of the large formwork 10.
Although the masonry pattern forming plates 20 and 27 are attached via the members 7 and 23, as shown in FIG. 11, the masonry pattern forming plates 20 and 27 made of rubber, synthetic resin or the like are directly attached to the form panels 11 and 12, respectively. ', 27' may be bonded with an adhesive. Further, each of the formwork panels 11 and 12 is a metal foam, but may be a plywood.

[0015]

As described above, the method for constructing a concrete dam with a masonry pattern according to the present invention comprises attaching a masonry pattern forming plate to each form panel of a large formwork, and using this large formwork to form the lowermost step of the concrete dam. After forming the concrete frame, a single form panel having a frame on the outer peripheral edge of the inner surface is attached to the lower part of the lowermost form panel of this large formwork, and the large formwork is sequentially moved upward from below. When forming a concrete skeleton while diverting it, it is possible to set a large formwork without aligning the formwork panel with the masonry pattern at the upper end of the inclined surface of the lower concrete skeleton, and workability is good, and immediately Concrete can be cast on the upper side of the concrete frame. Accordingly, a concrete dam with a masonry pattern can be efficiently constructed by sequentially extending the concrete frame with a masonry pattern upward while preventing spillage. In addition, after the lowermost concrete frame is formed, when the large formwork is sequentially lifted and diverted, it is not caught by the masonry pattern at the upper end of the inclined surface of the lower concrete frame. The masonry pattern forming plate to be attached to each formwork panel of the assembled formwork is not specified, and a variety of masonry pattern forming plates can be mounted, thus forming a different pattern of masonry pattern on the surface of the concrete dam to be constructed. be able to.

[Brief description of the drawings]

FIG. 1 is a side view of a formwork apparatus used in a method of constructing a concrete dam with a masonry pattern according to the present invention.

FIG. 2 is a rear view as viewed in the direction of arrow A in FIG. 1;

FIG. 3 is a perspective view showing a long form panel to which a masonry pattern forming plate is attached in the form apparatus of FIG. 2;

FIG. 4 is a perspective view showing a short form panel to which a masonry pattern forming plate is attached in the form apparatus of FIG. 2;

FIG. 5 is a side view showing a method of forming a lowermost concrete skeleton of a concrete dam by the construction method of the present invention.

FIG. 6 is a perspective view showing a form panel attached to a lower part of a lowermost form panel of the form apparatus of FIG. 1;

7 is a view showing a state in which the form panel of FIG. 6 is attached to a lower portion of a lowermost form panel of the form panel of FIG. 1;

FIG. 8 is a side view showing a state where a concrete skeleton of a concrete dam is formed by the construction method of the present invention.

FIG. 9 is a rear view as viewed in the direction of arrow B in FIG. 8;

10 is a view showing a state in which concrete is cast on the upper side of the concrete skeleton of FIG. 8 and the concrete skeleton is extended upward.

FIG. 11 is a perspective view showing another example of each form panel in the large assembled form of the form apparatus.

FIG. 12 is a diagram showing a conventional concrete dam construction method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Large assembled formwork 11, 12 Formwork panel 17, 23 Groove type frame 20, 27 Masonry pattern forming board 30 Concrete frame

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E02B 7/00 E04G 9/10 101 E04G 11/22

Claims (1)

(57) [Claims] 1. A large form frame is formed by arranging a plurality of single form panels in a vertical direction and a horizontal direction, and fixing the large form form on the back side with thick ends. In the method of constructing a concrete dam by forming a concrete skeleton while sequentially diverting to form a concrete dam, a masonry pattern forming plate is attached to each form panel of the large formwork, and the bottom of the concrete dam is After forming the concrete frame, a single form panel having a frame on the inner peripheral edge is attached to the lower part of the lowermost form panel of this large formwork, and the large formwork is moved upward from below. A method for constructing a concrete dam with a masonry pattern, comprising forming a concrete frame while sequentially lifting and diverting the concrete dam to construct a concrete dam with a masonry pattern.