JP3259148B2 - Emptying method for concrete structure in slip form method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of forming a circular channel or an L-shaped gutter which is used as a side gutter of a road by a slip-form method. For the method of hollowing out.

[0002]

2. Description of the Related Art A circular waterway used as a road gutter,
For the construction of L-shaped gutters, rolled gutters, etc., a slip-form construction method that can be continuously and efficiently constructed on site is employed. The slip form method uses a self-propelled machine equipped with a compaction device and a shaping device consisting of a mold with an open front and rear in the moving direction, and moves the form while compacting and shaping concrete in the form, This is a method characterized by continuously constructing a concrete structure.

When a discontinuous portion such as a rainwater basin is formed in the middle of the construction of a concrete structure such as the above-mentioned circular waterway, it is conventionally required to construct the entire concrete structure and then discontinue the discontinuous portion. Cut the slab and place a basin in this notch, or stop the self-propelled machine once before the discontinuous part so that no concrete is poured in the basin, The construction had been resumed. In addition, as another method, a concrete structure is constructed after installing a measure in advance.

[0004]

As described above, in the prior art, a discontinuous portion is cut off, or a concrete structure in a basin portion is interrupted to be cast and constructed. There was a disadvantage that the efficiency was poor. In particular, in the slip form method, since the concrete is poured while moving, the adjustment of the consistency which affects the accuracy of the finished shape of the concrete is delicate. Therefore, when the self-propelled machine is once stopped, that is, suspended, as described above, there is a problem that a high-quality concrete structure cannot be obtained and the efficiency is reduced. In addition, functional defects such as distortion and distortion are liable to occur at both seam portions of the continuous molding portion and the interrupted portion, and furthermore, there is a defect that the appearance of the finished product is deteriorated.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to be able to continuously build a concrete structure and obtain a high-quality concrete structure. In addition, it is an object of the present invention to provide a method for emptying a concrete structure in a slip form method, which can easily and quickly form a discontinuous portion in the middle of a continuous concrete structure.

[0006]

According to the present invention, there is provided a method for emptying a concrete structure in a slip-form method, comprising a compacting device and a shaping device comprising a form having openings in front and rear directions of movement in a side portion of a self-propelled machine. Attach, supply concrete that has not yet set into the form, compact it with a compacting device, move the form while adjusting it to a desired shape with a shaping device, and continuously construct a concrete structure. Before and after a discontinuous part (such as a basin setting place) placed in the middle of a concrete structure, a partition plate through which the formwork of the concrete structure can pass is placed, and concrete is discharged onto the discontinuous part. After the members are installed and the concrete is continuously poured and shaped over the entire area, the concrete discharged to the discontinuous portion is transferred to the concrete discharge section. In which was set to remove together.

[0007]

With the construction described above, the formwork moves together with the self-propelled machine, that is, it is built by continuous construction without interruption of concrete supply including the hollow position of the concrete structure. As a result, a high-quality concrete structure can be obtained. The concrete poured into the hollow position can be easily and quickly removed by pulling out the concrete carrying member using a crane or the like.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; FIGS. 1 to 3 show an example in which a circular waterway is continuously constructed. The circular waterway 1 is composed of a base concrete 2, a reinforcing steel bar 3, and a concrete block 4 of a main body. Constructed continuously.

The reinforcing bar 3 comprises a vertical reinforcing bar 3a and a hoop reinforcing bar 3b having an open upper center, and is assembled at a factory or a site. The concrete block 4 has a water passage 4a having a circular cross section at the center of the inside, and a vertical slit 4b communicating with the water passage 4a at the upper portion. Also, this slit 4
b is formed so as to widen upward.

As shown in FIG. 3, the self-propelled machine 5 is provided on one side of a machine body 10 which can be moved by a crawler 11.
A formwork 12 for molding the concrete block 4 having front and rear and lower surfaces opened is detachably mounted. Also,
This formwork 12 has a compaction device 1 comprising a vibrator.
3 and a shaping device 14 is provided at the rear of the formwork 12. Then, the concrete supplied to the front portion of the formwork 12 via the conveyor 15, the hopper 16 and the like is first compacted by the compacting device 13, and then shaped into a desired shape by the shaping device 14.

As shown in FIG. 1B, the mold 12 has a box-shaped outer mold 12A and a columnar circular portion 1A.
A space corresponding to the concrete block 4 is formed by being integrated with an inner mold frame 12B including a slit 2a and a slit portion 12b.

In such a configuration, as shown in FIG. 2, a recess 20 is formed in a predetermined position of the base concrete 2 to form a basin installation part A, and a partition plate is provided before and after the basin installation part A in the construction direction. 21 are arranged. Further, the concrete carrying member 22
Place. As shown in FIG. 1, the partition plate 21 has a shape that allows the moving mold 12 to pass therethrough and does not allow the poured concrete to flow out to the basin installation portion A, that is, the outer mold 12
A with a slightly smaller outer shape than the circular portion 12a of the inner mold 12B.
A circular portion 21a and a slit portion 21b through which the slit portion 12b can pass are formed.

At the four corners of the partition plate 21, the reinforcing bar insertion holes 2 are provided.
3 is formed, and the vertical reinforcing bar 3a of the reinforcing bar 3 is
Is inserted, and the nut 24 is screwed into the screw portion at the tip to integrate the rebar 3 and the partition plate 21. Also, the partition plate 21
Oil is applied to the surface on the side of the basin as a release material.

The concrete carrying member 22 includes a bottom plate 25.
And the side plates 26 on both sides are formed in a box shape. Bottom plate 25
Is formed longer than the width and length of the basin where the width and length are installed,
Also, it does not project from the upper surface of the base concrete 2. The side plate 26 is attached to a width direction end of the bottom plate 25 by a hinge 27 so as to be openable and closable, and a pair of handles 28 is attached to an outer end of the side plate 26.

In the above configuration, construction is performed as follows (see FIG. 2). (i) The reinforcing bar 3 to which the partition plate 21 is attached in advance is laid on the base concrete 2. The partition plate 21 is positioned before and after the basin installation portion A. Also, the partition plate 2
Oil is applied to the surface on the side of the first measure. (ii) The concrete unloading member 22 is arranged in the recess 20 of the basin installation portion A. The bottom plate 25 is placed on the base concrete 2 and the side plate 26 is opened to form a flat surface with the bottom plate 25 (see FIG. 1) so that the mold 12 can pass through.

(Iii) The concrete block formwork 12 is mounted on the self-propelled machine 5 and the concrete block 4 is continuously constructed while moving the formwork 12. (iv) Concrete is also cast at the basin installation part A,
Concrete C is deposited on the bottom plate 25 of the concrete carrying member 22. This is removed together with the concrete carrying member 22. In carrying out, the side plate 26 is set up, the wire rope 29 is attached to the handle 28, and the wire rope 29 is pulled up by a crane (not shown).

When the unloading is completed, simply set up the basin,
Construction work of the circular waterway ends. In the circular waterway 1, concrete is continuously cast and shaped without interruption of concrete supply and casting, so that a high-quality concrete can be efficiently constructed. In addition, since there is no need to remove the concrete in the basin portion as in the related art, it is only necessary to take out the concrete carrying member, quick work can be easily performed, and the efficiency of the construction work can be greatly improved. .

Although the circular channel has been described above, the hollowing method of the present invention can be applied to an L-shaped gutter, a rolled gutter, and the like as shown in FIG. in this case,
The partition plate 40 or 50 is fixed on the base surface using a suitable means since there is no reinforcing bar.

[0019]

As described above, the method for hollowing out a concrete structure in the slip foam method according to the present invention comprises:
Before and after the discontinuous part, a partition plate through which the slip form of the concrete structure can pass is arranged,
After installing the concrete carrying member on the discontinuous part and continuously casting and shaping the concrete throughout,
Since the concrete discharged to the discontinuous portion is removed together with the concrete carrying member, the following effects are obtained. (1) A concrete structure can be continuously constructed without interrupting the supply of concrete, and a high-quality concrete structure can be efficiently constructed. (2) Eliminating the work of removing concrete as in the past, the concrete can be removed only by carrying out the concrete carrying member, and the construction work can be greatly improved.

[Brief description of the drawings]

FIG. 1A is a perspective view showing a method for emptying a circular channel in a slip foam method according to the present invention, and FIG. 1B is a cross-sectional view.

FIGS. 2A and 2B are schematic side views sequentially illustrating a method for emptying a circular channel in the slip foam method according to the present invention.

FIG. 3 is a schematic side view showing an example of a self-propelled machine that performs a slip form method.

FIG. 4A is a perspective view showing an L-type gutter, and FIG. 4B is a perspective view showing a rolled gutter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circular channel 2 Base concrete 3 Reinforcing bar 3a Vertical reinforcing bar 3b Hoop reinforcing bar 4 Concrete block 4a Water channel 4b Slit 5 Self-propelled machine 10 Machine body 11 Crawler 12 Concrete block form 13 Compaction device 14 Shaping device 15 Conveyor 16 Hopper 20 Recess 21 Partition plate 22 Concrete carrying member 23 Rebar insertion hole 24 Nut 25 Bottom plate 26 Side plate 27 Hinge 28 Handle 29 Wire rope

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02B 9/06 E01F 5/00 E02B 5/02 E02F 5/10 F16L 1/038

Claims (1)

(57) [Claims] 1. A compacting device comprising a compacting device and a shaping device comprising a formwork opening in front and rear directions of movement is mounted on a side portion of a self-propelled machine, and concrete not yet compacted is supplied into the formwork to compact the compacting device. When forming a concrete structure continuously by moving the formwork while shaping it to the desired shape with a shaping device, before and after the discontinuous part arranged in the middle of the continuous concrete structure, After arranging the partition plates through which the formwork of the structure can pass, and installing a concrete carrying member on the discontinuous portion, continuously casting and shaping the concrete throughout the whole, and then on the discontinuous portion A method for emptying a concrete structure in a slip form method, wherein the discharged concrete is removed together with the concrete carrying member.