JPS593614B2 - Concrete structure construction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a method for integrally forming a concrete structure consisting of a slab with beams and a wall using a formwork mechanism that is divided into two parts in the column direction and can be individually reduced. This relates to construction equipment.

Conventionally, formwork that integrates walls, beams, and slabs for reinforced concrete and rigid frame structures has columns, etc. on the opening side from which the formwork is pulled out, and the formwork shape when assembled is such that the opening of the structure Due to the small volume, it is impossible to demold and pull out the mold while it is still in one piece.

For this reason, when removing the mold from the structure, the formwork is divided into small parts and disassembled for each part before being carried out.

Therefore, it is necessary to repeatedly assemble and dismantle the formwork each time a structure is constructed, and such work requires a large amount of labor and construction cost, which is not only uneconomical but also There are disadvantages such as severe damage to the frame and various parts, and poor finishing accuracy of concrete.

The present invention was made in order to eliminate the drawbacks that occurred in the conventional formwork construction method for concrete structures as described above.
By making the formwork mechanism reducible and pulling it out in the span direction through a smaller opening than when pouring concrete, concrete structures can be constructed efficiently and with high precision, and most of the work such as subdivision can be done. The purpose is to provide a construction device that does not require the following.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the details of an embodiment of the present invention will be described below based on the accompanying drawings showing one embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a concrete structure formed by the construction apparatus of the present invention, which includes a column 2, a wall 3 standing between the columns 2, an upper slab section 4, and a concrete structure 1 formed by the construction apparatus of the present invention. It is composed of a beam part 5 provided at the upper part and a beam part 6 formed between the upper parts of the column parts 2.

A and B have a split structure as a pair on both sides, and are formwork mechanisms that integrally mold the continuous structure 1 by combining both sides, and each can be moved separately, and the cylinder mechanisms A and B have approximately the same structure.

Formwork mechanism A located on the left side of Fig. 1 can be roughly divided into base frame 7.
, an upper support frame 8 mounted on the base frame 7 so as to be movable up and down, a slab molding form 9 mounted on the upper support frame 8, and a beam connected to the form 9 or incorporated in the middle. A molding phase form 10 and a pipe forming form 11 attached to the left side of the base frame I
It is composed of.

In the structure 1, the direction in which the formwork mechanism is pulled out, that is, the first
The horizontal direction in FIG. 0 will be referred to as the front-rear direction, and the left-right direction in FIG.

The base frame 7 is made up of pipes, and is made up of 12 groups of frames arranged vertically at appropriate intervals in the front and back, which are connected to girder members 13 and lattice or place members 14 by tightening with bolts to form one house. are assembled in a truss-like manner in the span direction, and a jack space 15 is attached to the lower end of the pipe columns on both sides of each frame 12.
, and adjust and support the overall height.

Flexible wheels 16 are attached to the lower horizontal member of the required frame body 12, and the base frame 7 is made movable in a desired direction.

The flexible wheels 16 are fixed to or detachable from the frame 12, and are brought into contact with the existing floor surface by contraction of the jack pace 15.

The upper support frame 8 is attached to the upper part of the frame body 12 of the base frame 7 so as to be able to rise and fall freely, and is formed into a gate shape using a pipe material and a steel molding having an outer diameter that can be inserted from the upper part of the pipe column of the frame body 12. The upper part of each support frame 8 is fixed to the constructed girder beam material 17 using bolts, and a slab forming form 9 is placed on the group of girder beam materials 17 and fixed with bolts.

The upper support frame 8 is vertically adjustable with respect to the base frame 7.
Bolt insertion holes 18 are drilled at regular intervals in the tube portion of the support frame 8, and bolts or pins that penetrate the bolt insertion holes 18 are attached to the tube portion of the frame 12 to adjust the vertical adjustment height. The upper support frame 8
An elevating mechanism 19 is attached to the base frame 7 so that the adjustment can be easily performed.

This allows the formwork mechanism to be reduced in the height direction.

Although the elevating mechanism 19 is a manual type in which the rack rod is moved up and down by a pinion, an automatic mechanism such as a cylinder or a jack may be used.

The slab forming form 9 continues in the longitudinal direction of the structure 1 in FIG. 1 with a beam forming phase form 10 interposed therebetween.

The connection between the slab forming form 9 and the beam forming phase form 10 installed in the middle in the front and back direction is as shown in FIG. 20.

The demolding mechanism 20 has a soft elastic material 21 such as rubber or sponge material interposed between the two mold frames, and is made to expand and contract by tightening bolts 22 or turnbuckles.
When the bolts 22 are tightened, the slab surface length of the slab molding form 9 is reduced, and the peeling mold becomes free.

An elastic part 23 is formed on the upper part of the formwork 10 that forms the front and rear beams 6, and by bending the formwork outward with this elastic part 23, peeling is facilitated without separation, and mold removal is possible. This prevents the formwork from deforming when it is used.

The side portions of the beam forming frame 10 are connected and fixed to the upper support frame 8 by turnbuckles 34.

The structure of the beam-forming frame 10 may be such that the side walls and the lower wall are each separate bodies, and the abutting ends are tightly connected using U-clips 24 or bolts, or the joint walls are integrally molded.

In addition, the fixing and structure of the slab forming form 9 and the beam forming formwork 10' forming the beams 5 on both sides long in the front-rear direction are determined by the second method.
As shown in FIG.

The beam forming frame 10' has a shape in which the lower part of the vertical wall is bent outward at right angles to the base frame 7 so as to form one side of the beam, and is connected to the slab forming form 9 with bolts. The elastic portions 23 as described above are formed at the side ends.

The elastic portion 23 may be simply provided on a straight line as shown in FIG.
It may be formed to be horizontally bent from the upper end as shown in FIGS. 3 and 4.

The upper end of the tube forming form 11 is removably connected to the lower end of the beam forming phase form 10' with bolts 25 or U clips.

The tube forming form 11 is attached to the pipe column of the frame 12 with an expandable tool 26 such as a turnbuckle at the upper and lower ends corresponding to the base frame 7, and by extending the expandable tool 26 at a predetermined position, a vertical wall 3 is formed. When the extensible tool 26 is contracted, it is brought close to the base frame 7 side and the upper part is housed between the beam forming phase frame 10' and the base frame 7, resulting in a demolded state.

A reduction mechanism 35 as shown in FIG. 5 is incorporated into the corner portions of the side beam forming forms 10 and 10', and folded pieces facing each other are installed at the abutting side edges of both forms 10 and 10'. 36, and a gap closing member 37 interposed between both folded pieces 36,
Folded piece 3 with an elastic clip 38 fixed to the member 37
It is removably fixed by clamping 6.

The end of the closing member 37 forms a right-angled abutment between the formworks 10 and 10', and when the member 37 is removed, the formworks 10 and 10' move toward the base frame 7 by the distance generated. Both formworks 10 are movable and can be moved against the concrete surface.
The peel-off mold of 10' becomes free.

Since the other formwork mechanism B located on the right side of FIG. 1 has approximately the same structure as the above-mentioned one formwork mechanism A, parts having the same mechanism and function will be given the same reference numerals and explanations will be omitted. .

In the other formwork mechanism B, the beam forming phase formwork 10' and the wall forming formwork 11 are arranged symmetrically with respect to the above-mentioned one formwork mechanism A, and the width of the slab forming formwork 9 is slightly wider. The width will be narrow.

In the ratio of the lengths of 11 and 12, which are the joint positions of the slab forming form 9 in both side formwork mechanisms A and B, that is, the joint positions of the same mechanisms A and B, 12 is the position before demolding of one formwork mechanism A. The opening size is determined to be within 43, which is necessary for the passage of the other formwork B.

In both formwork tanks A and B, the height dimensions H1 and H2 of the wall forming forms 11 are determined so that they can pass through the opening height T3 of the structure 1.

That is, when the upper support frame is contracted, it is made smaller than the opening height FI3.

The molding formwork 27 of the pillar 2 is usually detachable from the integral mechanism in order to facilitate the removal of each group of formworks, but if the form of the structure makes it easy to remove the mold, In some cases, a demolding mechanism interposed between the slab and beam forming molds is integrated into the overall mechanism.

In the illustrated embodiment, a case is shown in which the space between both side walls is divided into two formwork mechanisms, but when the structure 1 is a dog,
The formwork mechanism may be further divided into a plurality of parts.

In addition, at the front and back of the slab molding form 9, the rear wall forming form is connected to the rear part, and the terrace forming form is connected to the front part where it is drawn, and facing the rear wall forming form. A separate formwork for the rear wall is placed opposite to the rear.

Furthermore, in the illustrated embodiment, a case is shown in which a plurality of sets of formwork mechanisms are arranged in parallel to form a structure. Molding may also be performed.

The present invention has the structure as described above, and the construction of the concrete structure will now be explained.

After the floorboards on the first floor of a reinforced concrete structure are completed, the formwork mechanism, which is a set that incorporates all or only the necessary formwork, is suspended and inserted from the opening or upper opening using a crane. As shown in Figure 6, the mechanisms forming a set are arranged in parallel on the floor.

In the latter mechanism, the upper support frame 8 is placed in a predetermined position.
F is raised and fixed, and then the wall forming form 11, which has a built-in slope, is moved outward by operating the extension tool 26 using a turnbuckle, and is moved to a predetermined position where the upper end touches the beam forming phase form 10'. , the joint is tightly fixed with bolts or U-clips.

Next, for fixing the joint of the slab forming form 9, installing the column forming form 27 in a predetermined position, and maintaining the distance between the opposing wall forming form 11 and the other set of formwork mechanisms. tension machine 28
After that, use the jack pace 15 and the tensioning tool to make fine adjustments in vertical height and front/back/left/right direction.

The reinforcing bars and piping to be poured into the structure were installed according to the process before and after the formwork mechanism was installed, and after completion, concrete was poured to form the slab 4, beams 5 and 6, walls 3, and columns 2 in one piece. The state shown in FIG. 7 is established.

When the concrete has the strength necessary for demolding, the tensioner 28 and the joint bolts and U-clips that are separated at predetermined positions are loosened or removed, and the demolding mechanism 20 at each position is contracted prior to demolding.

The mold removal is first performed from the other formwork mechanism B, which is smaller in size, and after the wall molding form 11 in the same mechanism is demolded and built into the base frame side by operating the extension tool 26, the leg jack pace 1 is removed.
5 to ground the free wheel 16 on the floor.

Next, the upper support frame 8 is lowered and the slab and beam molding forms are peeled off, resulting in the state shown in FIGS. 1 and 8.

The front-mounted wing mechanism B is moved laterally using an input, a winch chain block, a moving vehicle, etc., and then pulled out horizontally in the direction of the escape opening using free wheels.

To draw the drawer out of the structure 1, as shown in FIG. 10, when the front position hook 29 comes out of the structure 1, hang the hanging wire 30 of the crane on the hook 29, and while maintaining the horizontal position, pull out the rear part hook 31. The electric chain hoist 33 was pulled out until it was completely dry, and the hanging hook 31 and the electric chain hoist 33 were attached to the crane hook 32 first.
By shortening the hanging wire 30' and placing the hanging hook 32 in the position shown in FIG.
is moved to the next construction location and is in the state shown by the dashed line on the upper floor of FIGS. 9 and 10.

After pulling out the other formwork mechanism B, the larger one formwork mechanism A is pulled out in the above-mentioned procedure, and a multi-layered or laterally connected structure is constructed by repeatedly lifting it to the upper floor and horizontally moving it laterally. It is something.

As described above, the construction device of the present invention divides the formwork mechanism as described above and can perform structures and functions that can be reduced individually, so that a solid structure can be quickly constructed by integrally pouring concrete. Moreover, it can be constructed safely, the finishing accuracy is good, the work is safe, and the functional management of the entire construction process saves labor and shortens the construction period, resulting in great economic efficiency.

In addition, the structure is not limited to rigid frame construction, but if an opening is provided on the side or bottom surface from which one contracted formwork mechanism can be extracted, even if beams or columns protrude in the span direction or girder direction, the structure can be The frame mechanism can be pulled out, making it suitable for a variety of applications such as wall-type structures as well as viaducts.

In addition, since the formwork for slab forming is equipped with a demolding mechanism that reduces the slab surface length, the formwork can be easily and easily removed from the concrete surface.

Furthermore, since the beam forming phase formwork is provided with an elastic part, peeling becomes easy and demolding can be performed smoothly, and the finish of the concrete surface can be improved. It is effective.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the construction apparatus according to the present invention, and FIG. 1 is a longitudinal sectional front view showing a state in the middle of demolding, and FIGS. Each figure is a longitudinal cross-sectional view showing various embodiments of the slab forming formwork and the beam forming formwork, FIG. 5 is a cross-sectional plan view showing the corner part of the beam forming formwork, and FIGS. FIG. 3 is a vertical cross-sectional view showing the construction order using the invented device;
FIG. 10 is a longitudinal sectional side view showing the formwork mechanism in a pulled out state in the same as above. 1...Structure, 2...Column, 3...
...Wall, 4...Slab, 5...Beam, 6
...Beam, 7...Base frame, 8...
Upper support frame, 9... Formwork for slab forming, 10.
10'... Beam forming phase formwork, 11... Wall forming formwork, 20... Mold removal mechanism, 23...
...Elastic part, 27... Formwork for forming columns.

Claims (1)

[Claims] 1 Consisting of two formwork mechanisms arranged side by side that are divided in the girder direction of the concrete structure and can be pulled out individually in the span direction, and each formwork mechanism is equipped with wheels that can be pulled out in the span direction, and when concrete is placed. A base frame is provided with a jack base at the bottom to support large loads such as wheels instead of wheels, and an upper support frame is provided on the top of this base frame so that it can be raised and lowered via a lifting mechanism. A formwork for forming a slab of the desired length is provided on the surface using a girder beam material using two mold mechanisms, and the formwork for forming a beam is bent vertically at the edge of this formwork for slab forming to remove the mold. When this upper support frame is lowered, the upper part of the wall forming form is inserted inside the beam forming form, and the total height increases to the total height of the opening surface of the floor beam. A wall forming form is provided on the side of the base frame so that it can be freely protruded and removed via an extendable tool, and furthermore, when one form mechanism is reduced, slab forming of the other form mechanism is possible. A concrete structure in which the formwork mechanism can be inserted into the lower part of the formwork to reduce the total width in the column direction of the divided formwork mechanism, and the formwork mechanism can be pulled out individually from the opening in the span direction. Construction equipment.