JP2631598B2 - Mobile formwork device and formwork method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable formwork apparatus for forming a concrete structure and a formwork method.

[0002]

2. Description of the Related Art Conventionally, when building a concrete structure,
After assembling a mold, pouring concrete into it and curing it for a certain period, the mold is dismantled to obtain a predetermined shape. In general, the formwork is made of a wooden plywood and a metal plate as a form face plate (a dam), which is reinforced with a reinforcing material such as wood or steel, and then joined and fixed by a steel rod called a separator. .

[0003] In particular, a mold called a large-sized mold uses, as the reinforcing material, a channel steel or an H-shaped steel having a large section modulus, or a commercially available steel material called a wide panel beam.

[0004] There is also a formwork apparatus which is movable by providing wheels at a lower portion. FIG. 17 and FIG. 18 show an example of this, and show a movable form device for producing a box culvert.

[0005] This formwork apparatus comprises an inner formwork 4 and an outer formwork 5 on a framed trolley 3 provided with an iron wheel 1 and a jack leg 2 arranged in a lower part.
Is provided. Each of the inner mold frame 4 and the outer mold frame 5 has a structure in which a steel beam 6 called a wide panel beam is used as a reinforcing material, and a metal mold face plate 7 (metal foam) is stretched over the steel beam 6. Inner mold 4 and outer mold 5 which are separated by embedded tie bolts 8 as separators
Connect with

Further, the inner frame 4 is connected to the left and right side plates with the hinge for the upper top plate, and the lower portion is connected to the framed truck 3 with the turnbuckle 9. In the figure, reference numeral 10 denotes a bracket interposed between the upper part of the inner frame 4 for the left and right side plates and the framed truck 3 as necessary.

[0007] Assuming that the floor plate portion of the box culvert is installed first, and that the reinforcing steel for producing the box culvert is assembled in a gate shape, the frame bogie is inserted so that the inner formwork 4 enters inside the reinforcing steel. 3 is moved on the iron wheel 1, the jack leg 2 is extended, the iron frame 1 is floated, and the frame bogie 3 is fixed, the outer formwork 5 is arranged outside the reinforcing bar, and the inner tie bolt 8 is used for the inside. Formwork 4 and outer formwork 5
And concrete is poured between the inner formwork 4 and the outer formwork 5.

After the concrete is cured, the connection with the embedded tie bolt 8 is released, and the bracket 10 is removed.
When the turnbuckle 9 is contracted, the inner frame 4 for the left and right side plates is inclined and separates from the concrete surface. When the jack leg 2 is contracted, the frame 3 descends and the iron wheels 1
Comes into contact with the ground, and the one for the top plate of the inner form 4 is also separated from the concrete surface. The inner mold 4 removed in this manner is moved by the iron wheels 1 together with the frame bogie 3 and is diverted to the next form installation.

On the other hand, the outer mold 5 is appropriately removed, moved by a lifting means such as a crane, etc., and is incorporated into the moving inner mold 4 again.

By the way, before assembling the formwork, design calculations are performed to determine the quantity and pitch of the reinforcing material and the separator. Generally, in the case of a normal form, a separator having a diameter of 6 to 9 mm is pitched at a pitch of 50 to 60 cm, and a separator having a diameter of 12 to 16 mm is used in a large form including the movable form shown in FIGS.
They must be arranged vertically and horizontally at a pitch of 50-60 cm.

[0011]

The larger the area of the formwork to be assembled, the greater the number of separators and the more time it takes to mount them. Further, in the case of reinforced concrete, the assembled reinforcing bars obstruct the work, and furthermore, the height of the formwork naturally increases the risk of work.

An object of the present invention is to eliminate the disadvantages of the prior art, to reduce the number of separators extremely, and to simplify the work of installing the separators, especially when assembling a large formwork, to save labor and time, and to reduce the number of separators. An object of the present invention is to provide a movable formwork apparatus and a formwork method capable of improving the operability.

[0013]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a movable form device in which a truck is provided with a truss member unit having a large rigidity as a reinforcing material for a form face plate. A funnel-shaped receiving part is provided on the formwork, and a conical or quadrangular pyramid-shaped fixing part for fixing a screw steel rod as a separator is fitted into the receiving part, or, in addition to this configuration, a truss member unit The gist of the invention is that the position of the vehicle is freely adjustable via a jack, or that the vehicle is a self-propelled vehicle provided with a traveling drive device.

[0014] In addition, as a movable formwork method, a movable form is provided on a bogie using a rigid truss member unit as a reinforcing material of a form face plate, and a funnel-shaped receiving portion is provided on the form. Formwork devices are arranged in parallel with the form face plates facing each other,
A cone or quadrangular pyramid-shaped fixing part is fitted into the cradle part,
The gist of the present invention is to fix a screw steel rod as a separator that connects between the form face plates of each form apparatus to the receiving portion via the fixing portion, and to cast concrete between the form face plates. .

[0015]

According to the first aspect of the present invention, the number of separators can be extremely reduced by using a stiff truss member unit as a reinforcing material for the mold face plate. As a result, the work of installing the separator is simplified, labor and time can be saved, and safety can be improved.

[0016] Further, when the respective formwork devices are arranged side by side with the formwork face plates facing each other, and when the formwork is fastened to each other, a fixing portion is fitted into the receiving portion, and mounting bolts are installed on the fixing portion. The separator can be extremely easily installed by combining with the threaded steel rod as the separator.

According to the second aspect of the present invention, in addition to the above-described functions, the position of the mold can be easily adjusted by expanding and contracting the jack. By contracting the jack, even with a complicated shape that is protruding from the wall, the mold face plate can be retracted inward and handled.

According to the third aspect of the present invention, in addition to the above-described operation, the carriage can move on its own, so that the formwork can be easily moved.

According to the fourth aspect of the present invention, simultaneous construction of a plurality of locations is possible by combining a plurality of movable formwork devices in parallel, and the entire formwork can be moved. For example, in the case where a treatment tank for a water treatment facility is to be constructed in a triple connection with a corridor, a water channel A, and a water channel B, three mobile formwork devices are used in parallel so that 3
The construction can be streamlined, for example, the entire cross section can be constructed at once. The separator can be easily arranged by fitting the fixing portion into the receiving portion.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view showing one embodiment of a movable formwork apparatus and a formwork method of the present invention, and FIG. 2 is a plan view of the same, showing a concrete structure to be constructed first. In this configuration, as shown in FIG. 15, a water channel B11, a water channel A12, and a duct 13 are arranged from the left.

In order to construct a biological reactor having such a structure, a bottom plate 14 is first constructed as shown in FIG. 11, and then a lower haunch 15 is constructed on the bottom plate 14 as shown in FIG. Then, as shown in FIG. 13, rails 16 are laid on and beside the bottom board 14. Further, as shown in FIG. 14, a rebar assembling scaffold 17 is assembled. Although not shown, the scaffold 17 is used to assemble the wall rebar.

In this state, the movable formwork apparatus of the present invention is installed. The movable formwork apparatus is of five types A, B, C, D and E. Among them, the A-form apparatus is formed of a frame as shown in FIGS. 3 and 4, and a hydraulic jack 20 is provided on a bogie 19 provided with wheels 18 running on the rail 16 at a lower portion thereof. The hydraulic jack 20 has a formwork 21 attached thereto.

The formwork 21 is assembled from steel materials such as steel pipe, equilateral angle steel, channel steel, lightweight steel, and the like, and a truss member unit 22 composed of a longitudinal truss and a lateral truss is used as a reinforcing material. 22 Formwork face plate made of stainless steel 23
Was fixed with bolts and nuts or a commercially available mounting bracket and stretched. The number of the truss member units 22 is determined according to the size of the formwork to be assembled as one unit having three vertical trusses as one unit and connecting the vertical truss with a horizontal truss.

The carriage 19 is a self-propelled carriage provided with a traveling drive device 24 such as a motor. Further, the wheel 18
Can be equipped with a manual elevating winch 26, while the bogie 19
On the top, a handrail or the like is provided around the periphery to form a work scaffold 25.

The B-form device is almost the same as the A-form device, except that the upper work scaffold 25 is a single step.

The C-form apparatus is for the construction of the corridor 13, and as shown in FIGS. 5 and 6, the bogie 19 and the point where the form 21 is attached to the left and right are the same as those of the A-form apparatus. And B formwork device, but a pipe support 27 is erected on the trolley 19,
At the upper end of the pipe support 27, a formwork 30 for constructing the upper floor plate of the corridor 13 is provided via a pulling pulley 28 and a joist 29.

The formwork 30 is different from the formwork 21 in that the haunch formwork 31 is provided.
The haunch formwork 31 is a haunch formwork support material.
The haunch form supporting material 32 is reinforced with a hinge 32, and the haunch form supporting material 32 is coupled to the form 21 with a hinge, and the truss member unit 22 of the form 21 is provided with an undulating jack 33 of the haunch form supporting material 32.

The D-form device and the E-form device are form devices located on the side, and are formed by a frame as shown in FIGS. The point that the formwork 21 is provided on the carriage 19 provided with 18 is the same as the other formwork apparatus, but the formwork 21 in which the formwork face plate 23 is stretched on the truss member unit 22 as a reinforcing material, Instead of a hydraulic jack, the truck 19 is supported by a turnbuckle 34. The D-form device and the E-form device are non-self-propelled trolleys without the traveling drive unit 24, and have rail clamps 35 provided near the wheels 18.

Next, a description will be given of a connecting member serving as a separator connecting between the form face plates 23 of each form device. A screw steel rod 36 is used for the connecting member. As shown in FIGS. 9 and 10, funnel-shaped receiving portions 37 are provided at the four corners of the formwork 21, and a conical or quadrangular pyramid-shaped fixing portion 39 for installing a mounting bolt 38 is fitted into the receiving portion 37. The mounting bolt 38 and the screw steel bar 36 are fastened by a screw coupler 40. In the figure, 41 is a washer, 42 is a tapered nut for fastening the mounting bolt 38, and 43 is an anchor plate.

As shown in FIGS. 1 and 15, the A-form apparatus is a waterway A12, the B-form apparatus is a waterway B11, and the C-form apparatus is a duct.
13 and the D-form device is outside the channel B11,
The E-form device is arranged outside the duct 13.

The movement from the preceding span to the next construction span in the A-type to C-type formwork apparatus is performed by traveling on the rail 16 laid on the bottom 14 by the traveling drive unit 24 mounted on the wheel 18 of the bogie 19. I do. The traveling operation is performed by a button switch for backward movement before being attached to the traveling drive device 24.

Next, the position of the truss member unit 22 is adjusted by operating the hydraulic jack 20, the form face plate 23 is expanded to both sides, and is appropriately brought close to the wall reinforcing bar. The hydraulic jack 20 is connected by a pipe from the hydraulic unit.
It is controlled by a button switch at hand and valves at various places.

Then, lifting winches 26 are installed at four lower positions of the carriage 19 (near the wheels 18) to jack up the carriage 19 and fix the level. Next, again use the hydraulic jack 20
Is operated to bring the form face plate 23 closer to the wall rebar.

The movement of the D-form device and the E-form device from the preceding span to the next span is performed by the rails installed on the outside.
This is performed by running on the vehicle 16, but it can be moved manually, not by a self-propelled device, and is fixed by a rail clamp 35 when it comes to a predetermined position. Further, the position of the form face plate 23 is adjusted by the turnbuckle 34.

In this way, the D-form apparatus, the B-form apparatus, the A-form apparatus, the C-form apparatus, and the E-form apparatus are arranged side by side, and The frame face plate 23 is made to face. Then, the fastening between the molds is performed by fitting the fixing portion 39 to the receiving portion 37 and coupling the mounting bolt 38 installed on the fixing portion 39 with the screw steel bar 36 as a separator, by the screw steel bar 36. Do.

Then, concrete is cast between the form face plates 23 of the form devices. After curing the concrete, loosen the taper nut 42 and tighten the mounting bolt 38 with the screw coupler 40.
Remove from At the same time, the hydraulic jack 20 is actuated to pull the form face plate 23 inward and remove the mold.

In the C-form apparatus, the duct 13
The pipe support 27 supporting the formwork 30 is released, and then the jack 33 for undulation is operated to push the haunch formwork 31 inward. Subsequently, the hydraulic jack is operated to lower the mold 30 and remove the mold.

In the above embodiment, the description of the construction of the upper floor plate portion and the girder is omitted. However, for example, the slab form is formed by assembling H-type steel in a lattice shape as in the case of the C-form apparatus. A form plate is laid, and it is structured so that it can be moved up and down by a hydraulic jack installed on the trolley 19. The load during concrete casting is supported by a pipe support on the trolley 19. The bottom formwork of the girder can be installed by erection of a support beam made of H-shaped steel on the trolley 19, installing a pipe support above the support beam, and further installing a pedestal made of H-shaped steel and laying metal foam.

[0039]

As described above, in the movable formwork apparatus and formwork method of the present invention, the truss member unit having high rigidity is used as a reinforcing material of the form face plate, so that the number of separators can be extremely reduced. When assembling a large formwork, installation work of the separator is simplified, labor and time can be saved, and safety can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of a movable formwork apparatus and a formwork method of the present invention.

FIG. 2 is a plan view showing one embodiment of a movable formwork apparatus and a formwork method of the present invention.

FIG. 3 is a front view of the A-form device.

FIG. 4 is a side view of the A-form device.

FIG. 5 is a front view of the C-form apparatus.

FIG. 6 is a side view of the C-form device.

FIG. 7 is a front view of the E-form device.

FIG. 8 is a side view of the E-form device.

FIG. 9 is a longitudinal sectional side view of a fastening portion between the molds.

FIG. 10 is a front view of a fastening portion between the molds.

FIG. 11 is a front view of a first step, showing a step of constructing a biological reaction tank by the formwork apparatus of the present invention.

FIG. 12 is a front view of a second step, showing a step of constructing a biological reaction tank by the formwork apparatus of the present invention.

FIG. 13 is a front view of a third step, showing a step of constructing a biological reaction tank by the formwork apparatus of the present invention.

FIG. 14 is a front view of a fourth step, showing a step of constructing a biological reaction tank by the formwork apparatus of the present invention.

FIG. 15 is a front view of the fifth step, showing the step of constructing the biological reaction tank by the formwork apparatus of the present invention.

FIG. 16 is a front view of construction of a biological reaction tank constructed by the formwork apparatus of the present invention.

FIG. 17 is a front view of a conventional formwork apparatus.

FIG. 18 is a side view of a conventional formwork apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Iron wheel 2 ... Jack leg 3 ... Framed trolley 4 ... Inner formwork 5 ... Outer formwork 6 ... Steel beam 7 ... Metal formwork face plate 8 ... Embedded tie bolt 9 ... Turnbuckle 10 ... Bracket 11 ... Waterway B12 … Water channel A 13… corridor 14… bottom plate 15… lower haunch 16… rail 17… rebar assembly scaffold 18… wheels 19… trolley 20… hydraulic jack 21… formwork 22… truss member unit 23… formwork faceplate 24… drive Equipment 25 ... Work scaffold 26 ... Elevating winch 27 ... Pipe support 28 ... Odashi 29 ... Joint 30 ... Form 31 ... Haunch form 32 ... Haunch form support 33 ... Hoisting jack 34 ... Turn buckle 35 ... Rail clamp 36 … Steel bar 37… Receiver base 38… Mounting bolt 39… Fixed part 40… Screw coupler 41… Washer 42… Tapered nut 43… Anchor plate

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Yamamoto 1-3-15 Awaza, Nishi-ku, Osaka-shi, Osaka Kashima Construction Co., Ltd. Osaka branch (72) Inventor Tadanori Sugita 1-3-3 Awaza, Nishi-ku, Osaka-shi, Osaka No. 15 Kashima Construction Co., Ltd., Osaka Branch (72) Inventor Kikutaro Sakai 5 Yonbancho, Chiyoda-ku, Tokyo Toa Construction Industry Co., Ltd. (72) Inventor Tsutomu Imai 6-8-10 Fukushima, Fukushima-ku, Osaka-shi, Osaka (56) References JP-A-4-52371 (JP, A) JP-B-59-3614 (JP, B2) JP-B-58-782 (JP, B2)

Claims (4)

(57) [Claims] 1. A truck having a truss member unit having a high rigidity as a reinforcing material for a frame face plate is provided on a bogie, a funnel-shaped receiving portion is provided on the forming frame, and a screw steel as a separator is provided on the receiving portion. A movable formwork device, wherein a conical or quadrangular pyramid-shaped fixing portion for fixing a rod is fitted. 2. The movable formwork apparatus according to claim 1, wherein the truss member unit is provided on the carriage so as to be adjustable in position via a jack. 3. The mobile formwork apparatus according to claim 1, wherein the carriage is a self-propelled carriage provided with a traveling drive device. 4. A movable form device having a truss member unit having high rigidity as a reinforcing material for a form face plate is provided on a bogie, and a funnel-shaped receiving portion is provided on the form form. A threaded steel as a separator that connects the conical or quadrangular pyramid-shaped fixing parts to the pedestal part so as to face each other, and connects the form face plates of the respective formwork devices to the pedestal part via the fixing part. A movable formwork method comprising fixing a rod and placing concrete between the form face plates.