JPS5941567A - Hatch opening frame apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a hatch opening frame device, and more particularly to a hatch opening frame device suitable for application to a hatch for carrying in equipment in a semi-underground building such as an atomic couplant. .

[Technical background of the invention]

FIG. 1 shows a conventional construction method for a hatch for carrying in equipment in a semi-underground building for an atomic couplant, etc., and this will be explained below.

In Figure 1, / is the lowest basement floor, C is the floor slab located on the upper floor and already has concrete strength, and 3 is the floor to be constructed.

When constructing this floor 3, first, support edging from the floor slab is assembled toward the upper floors to support the lower formwork S of the floor 3, and then reinforcing bars 6 are arranged and the formwork 7 of the hatch part 3a is installed. Then, this formwork is supported by a formwork valve groove that crosses the hatch portion 3a.

After that, concrete is poured on the floor 3 and made to grow, and after curing, the mold rod valve g, the formwork 7. Lower formwork! .

and remove the supporting eda.

[Problems with background technology]

In the conventional construction method carried out as described above, the shoring IIa for supporting the formwork 7 protrudes toward the center of the hatch 3a, as shown in FIG. This will narrow or block the open loss base of the grooved portion 3a, and this state will continue until the floor 30 reaches its strength. For this reason, when a large equipment IO is suspended from the hook 9 of the tower crane and transported to a lower floor than the end 3, as shown in Fig. 1, there is insufficient space in the top and bottom parts 3a, and the equipment IO cannot be brought in. There is a disadvantage that the process has to wait until after the mold rod valve g etc. have been removed.

In semi-underground buildings, it is customary to transport equipment/θ by hanging, so if there are 71 through holes on several floors of floor slabs, each time you construct the through holes on each floor, This is causing a hindrance and has a major impact on the delivery process.

[Purpose of the Invention] The present invention was made in view of the current situation, and it is possible to carry out the construction of the notch portion without interfering with the bringing in of equipment, and the construction process of the plant is not hindered. The object of the present invention is to provide a no-tsuchi opening frame device.

[Summary of the invention]

The present invention provides a frame-shaped formwork of a steel plate structure that is installed in a hatch section for carrying in equipment and constitutes a fill-in formwork for the floor, as a means for carrying out hatch construction without interfering with the carrying in of equipment. The present invention is characterized in that it comprises a main body and a support that supports the formwork main body from below at a position that does not interfere with the opening space of the formwork main body, and the support can be removed after the floor slab is cured.

[Embodiments of the invention]

An embodiment of the present invention shown in FIGS. 2 and 3 will be explained below.

In Figure 2, l is the lowest basement floor, C is the floor slab located on the upper floor and already has concrete strength, and 3 is the floor to be constructed. The Sochi opening frame device l/ is now being installed.

As shown in FIGS. 2 and 3, this hatch opening frame device l/ has a form body 7.2 having a steel plate structure and a rectangular frame shape;
The formwork body 1 is provided with a reinforcing frame 13 detachably attached to the lower surface side of the formwork body 1, and double supports /41' supporting the reinforcing frame 13 from below and having turnbuckles /Ua.

The formwork main body l is made in advance into a frame shape to match the opening shape of the no-tsuchi 3a, and can receive the lateral pressure during concrete pouring without requiring any reinforcing material to block the opening space. It has strength.

This formwork body /J is adapted to constitute a filling formwork for the floor 3 when concrete is poured into the floor 3.

The reinforcing frame 13 is constructed by assembling H-beams into a square shape as shown in FIG. It is removably attached to the bottom side of the floor 3 and is designed to receive the load of poured concrete on the floor 3.

As shown in Fig. 3, eye bolts/7 are also attached to the reinforcing frame 13 and the formwork body/2, so that the hatch opening frame device/l can be set and lowered into a predetermined position using a crane or the like. It has become. In addition, at the four corners of the lower part of the reinforcing frame 13, double supports /l are raised from the floor slab so as not to interfere with the opening space of the formwork main body /2.
The upper end portions of are removably connected via a screw member /g. The formwork main body 1.2 is then leveled with the surrounding floor slab formwork, that is, the left side of the lower formwork, by rotating the turnbuckle/da provided on each shoring/l as shown in Figure 3. is now being carried out.

In addition, in FIGS. 2 and 3, DA is the shoring that is assembled on the floor slab and supports the lower formwork, and t is the floor 3.
〃 is the reinforcing bars placed in , 〃 is the hook of the crane that carries in the equipment IO, and 〃 is the hatch opening on the upper floor of floor 3.

Next, a method of constructing the hatch portion 3a of the floor 3 using the hatch opening frame device // will be described.

During construction, first assemble the support edder on the floor supporter to support the floor 30 floor frame S, and then move the lower formwork 50 level by rotating the turnbuckle (not shown) provided on the support edder. .

Next, formwork body /, 2, reinforcement frame /3 and shoring /l
The hatch opening frame device l/, which has been integrally assembled in advance, is lowered to the notch portion 3a position of the floor 3 using a crane or the like. Then, by rotating the turnbuckle /lIa of the shoring /f, the formwork body /2 and the lower formwork! Which level should you match?

Next, reinforcing bars 4 are placed on the floor 3, and then concrete is poured. After curing, the screw member /g is removed and the support /da is removed, and the bolts 16 are removed and the reinforcing frame 13 is removed. At this time, bolt/A is nut/j
Since the threaded part is screwed into the threaded part, there is no risk of poured concrete penetrating into the threaded part, and therefore it can be easily removed. On the other hand, in parallel with or before and after these operations, the shoring panels will be removed and the lower formwork 3 of the floor 3 will be dismantled.

In addition, the lower formwork, shoring, and reinforcing frame that was dismantled and removed
, shoring ll1, etc. are put to use again when constructing hatch openings on upper floors.

Therefore, the hatch opening frame device // is connected to the hatch part 3a of the floor J.
Once installed in position, the reinforcement work for floor 3 begins.

Without waiting for concrete work, subsequent curing, and dismantling of the formwork (as shown in Figure 2, it is possible to transport the equipment/θ suspended with hooks through the opening space of the formwork body/θ to the lower floor. This makes it possible to significantly advance the delivery process of 10 pieces of equipment.

In the above embodiment, the reinforcing frame 13 is removably attached to the bottom surface a of the formwork body/2, but depending on the situation at the construction site, this reinforcing frame 13 may be attached to the formwork body/2.
, 2, that is, it may be arranged around the cast concrete side of the form body 12. In this case, the reinforcing frame 13 is buried and cannot be reused.
In addition, the upper end of the shoring /lI can be directly connected to the lower surface of the formwork body /, 2 using cap nuts lj and bolts /6.
Become.

Further, the reinforcing frame 13 may be omitted as necessary, as long as sufficient strength can be obtained with only the form body 12. Further, the shoring/4() may not be made detachable from the reinforcing frame/J or the formwork body/J, but may be made into an integral structure by welding or the like, and may be fused and cut at the time of disassembly and removal.

〔Effect of the invention〕

As explained above, the present invention places a frame-shaped steel plate structure formwork body in the nozzle part, fills it up, and supports the formwork body at a position that does not interfere with the opening space. Since the support is supported from below and can be removed after the floor slab has cured, once the formwork body is installed at the 71st corner, equipment can be brought in regardless of the progress of the floor slab construction. I can do it. In addition, the formwork can be completed by simply suspending the integrated structure of the formwork body and shoring from the nozzle, which greatly reduces the labor required for formwork work.

As a result, it becomes possible to significantly shorten the construction period.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional construction method, FIG. 1 is a bird's-eye diagram showing an embodiment of the present invention, and FIG. 3 is an enlarged cross-sectional view taken along the line -I in FIG. λ... Floor slab, 3... Floor, Ja... No. 1 part, 10... Equipment, l/.../%, 7-chi opening frame device,
/, 2... Formwork body, t3... Reinforcement frame, /G...
Shoring, /j... Cap nut, /6... Bolt, /
7...Eye bolt,/Za...Screw member. Applicant's agent Kiyoshi Inomata

Claims (1)

[Scope of Claims] 1. A frame-shaped formwork body having an iron plate structure that is installed in a hatch for carrying in equipment and constitutes a fill-in formwork for the floor, and a frame-like formwork body that is installed in a hatch for carrying in equipment and constitutes a fill-in formwork for the floor, and a frame-like formwork body that is placed in a position that does not interfere with the opening space of the formwork body. What is claimed is: 1. A hatch opening frame device comprising: shoring that is supported from below; said shoring can be removed after curing of a floor slab; A hatch opening frame device according to claim 1, characterized in that a reinforcing frame for receiving a cast concrete load is removably attached to the lower surface side of the U-form body, and this reinforcing frame is supported by shoring. . 2. The hatch opening frame device according to claim 1, further comprising a filling reinforcing material for receiving the load of poured concrete arranged around the floor slab side of the U-form body.