JPS6358992B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a large-assembly column formwork device for buildings, and more specifically, the present invention relates to a large-assembly column formwork device for buildings, and more specifically, a large-scale assembly of formwork on four sides of a column, and a method for opening and closing narrow width formwork panels on two opposing sides. The present invention relates to a large-assembly column formwork device in which wide opposing formwork panels are movably suspended from beam side formwork.

Traditionally, to make frame structures such as medium-rise buildings,
Generally, metal form construction methods have been used, but because assembly and disassembly are done by hand, construction efficiency is poor and the construction period is long.

For this reason, various construction methods using large-scale formwork have recently become popular, but all of these construction methods require two types of concrete for walls, columns, beams, and slabs.
Since the pouring is done in batches, the installation, removal, and movement of the large formwork for walls and columns and the installation, removal, and movement of the large formwork for beams and slabs are carried out alternately.
The reality is that construction has become complicated and construction efficiency has not improved as much as expected.

On the other hand, if the formwork for the internal columns, slabs, and beams is made into a large assembly formwork in order to pour concrete for the building's skeleton in one time, the large-assembly column formwork is too deep for the building to be used by a crane. If it is not possible to lift it up or lower it into a designated position, it must be dismantled into formwork panels on all four sides and transported. It is impossible to achieve efficiency.

The present invention was developed in view of the above circumstances, and in cases where the building is too deep and the large column formwork cannot be lifted out with a crane, it is possible to extend the structure up to the opening of the constructed frame structure without dismantling it. To provide a large column column formwork device for a building which can be moved and lifted by a crane, and can be lowered to a predetermined position on an upper floor and easily installed.

An embodiment of the large-assembly column formwork apparatus according to the present invention will be described below with reference to FIGS. It is a wide formwork panel reinforced with thick timbers 3 made up of two square pipes arranged in three tiers.The formwork panels 1 are provided facing each other, and the side ends of each formwork panel 1 on opposite sides are A narrow formwork panel 4 is rotatably supported. That is, angle members 5 that abut and connect to the side ends of the wide form panel 1 are fixed at both ends of each narrow formwork panel 4, and a hinge plate 6 is attached to the angle member 5 at one side end. A hinge bolt 8 is inserted into the bolt hole of each hinge plate 6 and a long hole 7 drilled at the end of the thick end material 3 of the wide formwork panel 1, and then tightened. A narrow formwork panel 4 is rotatably supported at the side edge of the wide formwork panel 1. Therefore, the form panels 4 on the two sides of the column can be opened and closed.
Note that instead of drilling the elongated hole 7 at the end of the end piece 3, an elongated hole may be formed in the hinge plate 6, and a bolt hole may be formed at the end of the end member 3. On the outside of the narrow formwork panel 4 that has been rotated and closed, tie bolts 9 are tightened and stretched between the ends of the thick timbers 3 facing each other, and the wide formwork panel 4 is opened. 1 room is prevented from expanding by pouring concrete. Hanger attachment fittings 10 are provided on the left and right sides of the thick material 3 at the upper stage of the wide formwork panel 1, and a retractable hanger 12 having a roller 11 at the upper end thereof is provided.
The lower ends of the two are adapted to be removably connected. Then, in this hanger 12, a large slab
A wide formwork panel 1 is movably suspended from a hanger rail provided at the lower end of a beam side formwork that can move forward and backward at both ends of a beam formwork device (details not shown). Hanging fittings 13 are horizontally attached to the outer surface of the wide formwork panel 1 for lifting with a lifting frame to be described later. Note that the narrow formwork panels 4 have their upper ends lower than the wide formwork panels 1, except for the large column formwork devices arranged at the corners of buildings, and when installed in a predetermined position, The L-shaped steel formwork at the end of the beam bottom formwork is arranged in this section.

The large-assembly column formwork device 14 of the present invention configured as described above is installed at a predetermined position as shown in FIG.
A wide formwork panel 1 is attached to the hanger rail 16 at the lower end of the beam side formwork 15 that can move forward and backward at both ends of the beam formwork device.
The hanger 12 attached to the hanger mounting bracket 10 on the upper end thick timber 3 is hung movably from the roller 11 at the upper end, and the upper end of the wide formwork panel 1 is attached to the lower end of the beam side formwork 15. With the L-shaped steel formwork 17a at the end of the beam bottom formwork 17 arranged between the large column formwork devices 14 connected to the upper end of the narrow formwork panel 4, the first floor Concrete pillars are constructed by placing the concrete frame once. After the curing period has passed, the pillow 18 that supports the large column formwork device 14 is first removed, and the connection between the wide formwork panel 1 and the beam side formwork 15 is released as shown in FIG. 3b. Next, as shown in FIG. 2, remove the tie bolts 9 stretched between the ends of the thick timbers 3 facing each other on the outside of the narrow form panel 4, and attach each form panel 4 to the hinge bolts 8. The L-shaped steel 17a at the end of the beam bottom formwork 16 is connected to both sides of the upper part of the wide formwork panel 1 by pulling it outward along the long hole 7 of the thick end material 3. Remove corner angle 19.

Next, the hanger 12 is extended to remove the large-assembly column formwork device 14, and the large-assembly column formwork device 14 is run within the hanger rail 16 via the rollers 11 of the hanger 12 to form the frame structure. Move to the opening side.
Similarly, each large column forming apparatus 14 that has constructed the concrete columns of the frame structure is sequentially moved to the opening side of the frame structure through the above-described procedure. Next, remove the lower end of the hanger 12 of the large-assembly column formwork device 14 that has been moved to the opening from the hanger mounting bracket 10, and attach the hanging bracket 13 on the outer surface of the formwork panel 1 as shown by the dashed-dotted line in FIG. 3C.
The hanging rope W of the lifting frame F is hooked to the lifting frame F, and the large-assembly column formwork device 14 is suspended until one end of the large-assembly column formwork device 14 protrudes outside the frame structure B. After pulling out the narrow formwork panel 4 that is open on one side as shown in the solid line in Fig. 2 and connecting it with U clips, etc., the entire large column formwork device 14 is assembled using a lifting frame F. Pull it out of the frame structure B and lift it up as shown by the solid line in FIG. 3C. Then, the column reinforcing bars 20 are arranged as shown in FIG. It is lowered and placed on the pillow 18 that has been placed on the outer surface of the kicker 21 in advance, and the narrow formwork panel 4 that is open on the other side is closed, and the ends of the end pieces 3 facing each other on the outside of the narrow panel 4 on both sides are Tighten and tension the tie bolts 9 between the sections to complete the installation. Similarly, each large-assembly column formwork device 14 is lifted up, moved, and installed at a predetermined position on the second floor.

Then, from inside the constructed first floor frame structure B, there is a beam bottom form 17, a large slab/beam formwork device (not shown), and a beam formwork (not shown) at the longitudinal end of the large slab/beam formwork device. 2 Concrete columns are constructed and cured within each large column formwork device 14 of the present invention by placing the concrete for the floor frame once. Thereafter, the large-assembly column formwork apparatus 14 of the present invention repeatedly performs the above-described operations to construct concrete columns on each floor as the frame structure of the required number of floors is constructed.

As can be seen from the above explanation, the large-assembly column formwork device of the present invention is suitable for one-story building constructed along the hanger rails provided at the lower ends of the beam-side formworks at both ends of the large-assembly slab/beam formwork device. Since it can travel to the opening of the frame structure, it can be easily lifted up with a lifting frame and lowered to a predetermined position on the upper floor.
Therefore, unlike in the past, there is no need to disassemble large column formwork into four-sided formwork panels and transport them, which greatly contributes to labor savings in building frame structures and improved construction efficiency. .

In addition, in the large-assembly column formwork device of the present invention, the formwork panels on the two sides in the direction of travel along the hanger rail can be opened and closed, so even if there is a concrete column constructed in the direction of travel, the formwork panels on both sides can be opened and closed. By opening the formwork panel, you can move smoothly to the opening of the frame structure, avoiding the concrete pillars. Furthermore, when lifting the formwork to the upper floor using the lifting frame, the formwork panel on one side is closed and the opposing wide formwork panels are connected, so the large-assembly column formwork device can be lifted and moved stably. When the column formwork device is moved to the specified location on the upper floor, it can be installed surrounding the reinforcing bars that have been arranged in advance, making it extremely workable and eliminating the most time-consuming setup for column concrete pouring. This has the effect of significantly simplifying the work.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the large-assembly column formwork device of the present invention, FIG. 2 is a plan view thereof, and FIGS. 3 a to 3 d are steps of demolding, moving, and installing the large-assembly column formwork device of the present invention. FIG. 1...Wide formwork panel, 2...Steel formwork, 3
... Thick timber, 4... Narrow formwork panel, 5... Angle material, 6... Hinge plate, 7... Long hole,
8... Hinge bolt, 9... Tie bolt, 10...
...Hanger mounting bracket, 11...Roller, 12...
Hanger, 13...Hanging fitting, 14...Large column formwork device, 15...Beam side formwork, 16...Hanger rail, 17...Beam bottom formwork, 17a...L-shaped steel formwork, 18...Pillow, 19...Corner angle, 2
0...Column reinforcement, 21...Kitsuka.

Claims (1)

[Claims] 1. Wide formwork panels made of multiple sheets of steel formwork reinforced with a thick upper end member are placed facing each other, and narrow formwork panels are installed at opposite ends of each formwork panel so that they can be opened and closed. Tie bolts are tightened and tensioned between the ends of the thick timbers facing each other on the outside of this narrow formwork panel, and hanging fittings are attached to the outside of each wide formwork panel. , A hanger mounting bracket is provided on the upper end thick material, and a hanger having a roller at the upper end is removably connected to the hanger, and the hanger is used to attach a wide formwork panel to the lower end of the beam side formwork. A large column formwork device for buildings that is suspended from rails so that it can run.