KR20000018037A - Hanging form system - Google Patents

Abstract

PURPOSE: A suspended mold process for constructing an underground story structure in a reverse-pouring method is provided to promote a safe recollection of a suspension bar and a cone tube shaped sleeve. CONSTITUTION: A suspended mold process is formed by: a step for assembling a suspended mold(100) to be suspended to a beam/slab structure(200) of a first story by dividing into a beam lower unit suspended mold(101), a slab suspended mold(102), and a beam side unit suspended mold(103); a step for hanging down the divided assembling suspended mold for securing the constructing space for the next story by processing a continuous caving construction without an obstacle to use the suspended mold for constructing the beam/slab structure of the lower story; and a step for releasing and lowering the suspended mold from the constructing beam/slab structure for the suspended mold to be easily used for constructing the beam/slab structure of the lower story while being suspended on the constructed structure. Herein, wood, angular pipe, H-beam, and plywood can be used for the suspended mold.

Description

Hanging form system

The present invention is a suspension formwork that is easy to assemble and dismantle and demould as a suspension formwork after consideration of the exclusive use for other uses, and the suspension formwork method to enhance the safety and work efficiency when demolding and lowering down, safe recovery of the suspension rod, etc. It is about.

It is clear that the reinforcing beam / slab structure using the suspension form designated by the inventors of the patents No. 9921, 236708 and No. 85 of the new construction technology has been improved in construction quality by stable long-term maintenance during excavation. However, H-beams suitable for the beam height of the beam / slab structure to be constructed are used as yokes and joists, so if the beam height of the structure to be constructed is different, it is difficult to convert the H-beams to a large amount. In the meantime, the economic burden of purchasing a new material is inevitable.

In addition, the conventional hanging formwork is cured in a form in which the weight of concrete is cast out of the side formwork of the beam having the inner and outer corners of the combined right-angle square of the part where the horizontal plane and the vertical plane of the beam / slab structure meet at right angles. Considering the very low demolding rate in the original state, the vertical plane of the beam is designed and changed slightly to be inclined. Therefore, the concrete requirement is increased and the formwork is complicated.

In addition, in the work of demolding the hanging formwork and descending, it is impossible to demold by the lifter and descender. In addition to being able to escape from the anxiety of forcibly demolding by excavating equipment, there is also a high risk of undesired hanging form drop damage due to cumbersome work, low skill and carelessness.

In addition, the yoke of the H-beam and the outer yoke of the joist intersection are wrapped with a U-bolt, and a suspension rod is installed on one side of the suspending support, so that the eccentric force acts on the yoke of the H-beam. The warp deformation of the H-beam yoke occurs due to the weight of the back, and the bending portion of the U-bolt tends to be frequently broken due to the eccentric action.

In addition, H-section steel suitable for reinforced concrete beam structure height is applied to most of the yoke and joist, and also the cost is increased because the intersection of yoke and joist is fixed by long U-bolt or beam clamp. The use of the C-shaped steel auxiliary joists again overlaps the joists arranged at intervals suitable for the plywood specifications. At this time, the drilling and drilling of the plywood and C-beams with an electric drill and the rivet fixing were cumbersome and the cause of efficiency deterioration.

In addition, after assembling ground concrete, assembling the hanging formwork of the first floor and placing the beam / slab concrete, the height difference of the beam structure to prevent the deflection caused by the unsuspended relationship Because of the need for a separate support, the recovery and storage of these materials during the excavation work was not easy, resulting in additional costs.

In addition, since the suspension rod is protected from being buried during concrete pouring work, the double-sleeve is made of a rubber hose cut to a suitable length so that it can be demolded, lowered and recycled afterwards. Work progress is slow and cumbersome as it requires work processes.

In addition, as a safety device to prevent the loosening of joints, fixing nuts, or supporting nuts of suspension rods due to vibrations, when small bolts are fastened at right angles to these nuts for a long time, the bolts cannot be unduly released due to corrosion. It is easy to break the suspension and use it even if you can not dispose of it.

Due to the non-economic reasons listed above, the conventional hanging formwork is assembled by butt-welding H-beams or square tubes for cost reduction, but it is time and costly to dismantle and remove the butt welds with a high-speed grinder in consideration of recycling when dismantling. Structural defects that are large and especially damaged by the base metal are expected to cause safety accidents in the future recycling, but R & D on new suspension formwork with technology and economic power to fundamentally heal the safety difficulties caused by large-scale accidents caused by economic logic. Urgent and desperate.

The present invention further advances the hanging formwork spread in the preceding patents No. 9921 and No. 236 708 and No. 85 of Construction No. 85 in terms of technology and economics to eliminate special order materials as much as possible. It is to provide a new suspension formwork that can be used for ten minutes later or for other purposes by making and using suspended formwork.

According to the present invention, the beam / slab structure has the upper and lower parts of the construction structure even when the concrete placing weight of the structure having the inner and outer edges of the quadrilateral and vertically coupled squares is pushed out of the formwork to the outside. It dismantles the joint of the suspension rod of the suspension formwork, replaces it with the demolding elevator, pushes it down and demotes it, thereby preventing damage caused by the dropping of the suspension formwork and contributing to the creation of a safe working environment.

In addition, it is possible to secure the plywood with nails by combining a yoke such as a square tube and an H-shaped steel, which is easy to secure more than 4㎡ of suspension area, and structural stability of the suspension formwork, and a suitable wooden joist that satisfies the plywood use conditions. To provide a simple assembly method.

And this invention is to support the change of the height of the beam structure by extending the suspension rod to solve the deflection caused by the suspension formwork is not suspended when placing the ground concrete discarded in the first layer The cost is saved by storing the product in a suspended state and recycling it.

Since the suspension rod of the suspension formwork can be fixed by covering the suspension rod with the conical tube sleeve so that the suspension rod can be lowered without being buried in concrete, the suspension rod is lowered together with the suspension form to exclude the pulling and re-installation process of the suspension rod rib.

In addition, as an essential safety device for suppressing the joint and fixing of the suspension rod and loosening of the supporting nut by working vibration, the outer surface of the suspension rod (rock bolt for preventing the collapse of the rock during the excavation of the ground) has a pin on the opposite side of the V groove formed on the opposite side. Even if it is corroded for a long time, even if it is corroded for a long time, it is not damaged even if the bow pin is pulled out by forcibly rotating the suspension nut with a large cross-sectional area. Provide formwork.

1 is an assembly view of the detachable suspension formwork

2 is an assembly view of the integrated suspension formwork

3 is a partial cutaway front view of the suspension rod anchoring nut (a) and the anchoring nut (b) and the joint nut (c) and a common plane (d) view of the nut;

Figure 4 is an assembly cross-sectional view of the formwork according to the work process of the detachable suspension formwork method

5 is a cross-sectional view of a state in which the formwork for beam bottom of the detachable suspension formwork is demoulded and lowered to a predetermined position and then reinstalled.

6 is a state in which the slab suspension formwork is demoulded and the beam side suspension form is demolished in a state in which the slab suspension formwork is demolished and then mounted on the slab suspension formwork after demolding the suspension formwork for the beam bottom of the detachable suspension formwork and re-installing the descending form to the predetermined position

7 is a cross-sectional view of a state in which the slab formwork of the detachable suspension formwork is demolded and assembled and reassembled to the beam side suspension formwork and the beam bottom suspension formwork to a predetermined position;

8 is a cross-sectional view illustrating a working process and an assembled state of the integrated suspension formwork method

9 is a sectional view showing an initial working process of demolding the integral suspension formwork.

10 is a cross-sectional view of a state in which the integrated suspension formwork is demolded and lowered to a predetermined position and then reassembled

Figure 11 is a detailed view of the demoulding lift and fastening workbench in the state of securing the working space between the ram and the suspension rod of the suspension form demolding lift and the detailed drawing structure of Figure 11 (a)

Figure 12 is a cross-sectional view (a) of the assembly structure for easy assembly and disassembly (a) and assembly L-type fastener perspective view (b) to minimize the damage of the user material when using the yoke and joist angle pipe for assembly of suspension formwork Assembly plan view (c) Another assembly cross section (d)

13 is a cross-sectional view (a) of the assembling structure for easy assembly and disassembly and the L-shaped bolt for easy disassembly in case of using the yoke of the H-shaped steel and the joists of the square pipes for assembling the suspension formwork; L-type clamp clamping perspective view (b) Assembly plan view (c) Another assembly cross section (d)

14 is a cross-sectional view (a) of the assembly structure for easy assembly and disassembly and easy L-shaped buckling bolt for minimizing damage to the user material when using the yoke of the H-shaped steel and the joist of the lumber for suspending formwork assembly And L-type clamping perspective view (b) Assembly plan view (c) Another assembly cross section (d)

Figure 15 is a cross-sectional view (a) and assembly fastener perspective view (b) of the assembling structure easy assembly and disassembly easy to minimize damage to the user material when using the yoke and joist variable beam for assembling the suspension formwork (c) another assembly cross section (d)

<Brief description of the major symbols in the drawings>

1: discarded concrete 2: suspension rod upper support plate

2a: Suspension rod bottom support base plate 2b: Reinforcement plate

3: suspension rod 4: nut

4a: support nut 4b: fixing nut

4c: Fitting nut 4d: Suspension rod V-shaped groove

4e: Halpin groove 4f: Bowfin cross groove

4g: Halpin 5: Suspension pedestal

6: yoke 6a: yoke of each tube

6b: H-beam yoke 6c: variable beam yoke

7: joist 7a: each pipe joist

7b: wood beam joist 7c: variable beam joist

8: U-Bolt 9: Wire

10: plywood 11: nail

11a: tanned nails 11b: screwed nails

12: spring 13: triangular adjustable stand

13a: foam tie 14: conical tubular sleeve

15: demolding lift 15a: thick screw

15b: ring nut 15c: crown

15d: Union nut 15e: Universal joint

15f: chain 15g: ram

16: hydraulic cylinder 17: fastening work table

18: bolt 19: L-shaped bolt

20: L-type fastener 21: L-type clamp bolt

22: L-type clamp 23: variable beam fastener

100: suspension formwork 100a: detachable suspension formwork

100b: integrated suspension formwork 101: suspension formwork for beam bottom

102: suspension formwork for slab 103: suspension formwork for beam side

200: beam / slab structure

In Fig. 1, the detachable suspension formwork arranges the excavation ground, and installs the supporting plate 2a for supporting the lower end of the suspension rod 3 at each position selected by the reference draw line on the pouring surface of the discarded concrete 1, and the supporting plate 2a. Screw the short suspension rod (3) into the fixing nut (4b) attached to the center of the surface and place it vertically.

Subsequently, the support nut 4a is screwed into the upper portion of the suspension rod 3, and then the suspension pedestal 5 is inserted thereon, and a pair of yokes 6 are installed side by side on both sides of the suspension pedestal 5, respectively. Secure with U-bolt (8).

The yoke (6) is preferably a pair of yoke (6) as a safety structure that does not act eccentricity, but when using the outer line yoke (6) of large cross-section as possible through the central axis of the yoke (6) suspension rod (3) Install and fix to prevent eccentric action.

Next, the wood joist 7 is laid at regular intervals on the yoke 6 with a grid and the intersection of the yoke 6 and the joist 7 is fixed by the method of FIG. 12 or the method of FIG. Assembling from the suspension formwork 101 for the suspension beam bottom by laying the plywood 10 on the 7b and fixing it with the nail 11, and then slab in the same manner in consideration of the beam height of the beam / slab structure 200. After assembling the suspending formwork (102), the suspending formwork (103) for the beam side is assembled.

At this time, the beam side suspension formwork 103 is an iron plate It is bent to form a hole at regular intervals in the upper and lower horizontal portions and fixed by fixing the nail (11a) therein to assemble the vertical movement of the beam side suspension formwork 103 is possible, but not horizontal movement.

Thus, assembling the suspension formwork 100 and placing the reinforcement, concrete to build the beam / slab structure 200 and demolding the slab suspension formwork 102 for the slab suspension formwork (102) when descending work beams When the spring 12 for connecting the side suspension formwork 103 is installed and lowered to a predetermined distance, the beam side suspension formwork 103 pressed against the concrete beam / slab structure 200 is pulled out in a downward 45 ° direction. It is lowered together while being mounted on the slab suspension formwork (102).

The beam side suspension formwork 103 is a beam / slab structure 200 of the inner and outer edges of the rectangular frame in which the horizontal and vertical plates of the beam / slab structure 200 are combined at right angles. Even if the die 103 is molded to the outside, a triangular base 13 for suppressing outward rolling of the beam side suspension form 103 assembled in a structure that is easy to demould is mounted. When the beam bottom suspension formwork 101 is demoulded and lowered, the outward sliding phenomenon of the beam side suspension formwork 103 is suppressed and the beam form suspension formwork 103 is lowered by the descending of the triangular variable pedestal 13. Since the demoulding becomes smooth and the slab suspension formwork 102 is lowered and reassembled, the triangular deformable stand 13 functions as a foam tie 13a that suppresses the rolling, thereby reducing the original formability and reshaping of the suspension formwork 100. Easy to assemble

In addition, since the triangular variable pedestal 13 serves as a support for the suspension formwork 102 for the slab, when the beam height of the beam / slab structure 200 is changed in the conventional hanging formwork, the difficulty of accommodating it disappears. .

In addition, by attaching a nut 19 to the upper portion of the rear tube of the triangular variable pedestal 13 and inserting the bolt 18 so as to accommodate the changed beam height of the beam / slab structure 200 when necessary, the bolt 18 and the nut ( This is because the support structure is made to stretch the variable length by the mutual fastening of 19).

If the suspension rod (3) is buried due to concrete pouring, the suspension formwork (100) is later demolded and lowered and recycled.

In this regard, in order to prevent the suspension rod 3 from being buried in the pour concrete, a conical tubular sleeve 14 is fitted to the suspension rod 3 and a suspension nut 4 is fastened to the upper end of the suspension rod 3. To isolate it from concrete. In this way, when the demolded suspension formwork 100 is subsequently lowered, the conical tubular sleeve 14 also descends at the same time as the suspension formwork 100, and afterwards, it is fixed at the reinstallation position, thereby naturally removing and reinstalling the process according to the recycling function. It is omitted.

In Figure 2, the integrated suspension formwork is installed on the upper surface of the ground concrete (1) for the ground clearance, the support plate (2) for each position selected as the reference line drawing in the same manner as described above, the short suspension rod on the nut (4b) (3) Mounting, installation of supporting nuts (4a) and suspension pedestals (5) on suspension rods (3), installation of lattice-type wooden joists (7) using yokes (6) on both sides of suspension pedestals (5), yoke ( 6) fix the intersection point of the joist (7), fix the plywood (10) on the joist (7) and fix it using the nail (11), and consider the height of the beam following the beam formwork assembly, After assembling the suspension formwork (102), the formwork (103) for the beam side is assembled.

At this time, the beam side formwork 103 is iron plate When bending and shaping the beam / slab structure 200 by fixing the nails 11a for each hole by fixing holes at regular intervals in the upper and lower horizontal portions, and demolishing and lowering the integral suspension formwork 100b. The beam side suspension formwork 103 pressed against the concrete beam / slab structure 200 is pulled down by connecting the spring 12 in the downward 45 ° direction, and then descends together while being mounted on the integral suspension formwork 100b. To be possible.

At this time, the triangular variable pedestal 13, which suppresses the sliding to the outside of the suspension beam side plate formwork 103, is installed on the joist 7 of the suspension beam portion to demold and lower the integrated suspension formwork 100b. As the triangular variable pedestal 13 for restraining outward sliding of the 103 is lowered, the demoulding of the beam side suspension form 103 is smooth, and the triangular variable pedestal 13 can accommodate the changed height of the upper portion. The nut 19 is attached to the upper part of the triangular variable pedestal 13 and the bolt 18 is fastened to form a support whose length is stretched and variable by coupling the bolt 18 and the nut 19.

Then, in order to prevent the suspension rod 3 from being buried in the pour concrete, a conical tubular sleeve 14 is fitted to the suspension rod 3 and the upper end thereof is fixed with a suspension nut 4 to protect the suspension rod 3. do. Accordingly, when the suspension formwork 100 is lowered, the conical tubular sleeve 14 is also lowered together, so that the fixing, drawing, and reinstalling process are reinstalled at the reinstallation position.

In Figure 3, the suspension nut (4) is rotated left and right along the screw of the suspension rod (3) is converted into vertical and vertical movement in the planned position, as shown in Figure 3 (a) of the support nut (4a) ) Or a fixing nut 4b for fixing the suspension state as shown in FIG. 3 (b), and a joint nut 4c for connecting the suspension rod 3 in the longitudinal direction as shown in FIG. 3 (c). All the suspension nuts 4 are formed to have the plane d of FIG. 3 of the same structure and are an essential safety device for suppressing the loosening due to vibrations during operation, and the suspension nuts 4b given at the opposite positions of the suspension rods 3. When the halpin species grooves 4e given in the triangular direction coincide with each other on the inner surface of the slit, insert the halfins (4g) and remove the halfins (4g) and suspend nuts with large cross-section even if the suspension rods (3) and the hanging nuts (4) are corroded. It is easy to rotate (4), and it is easy to collect and recycle.

Depending on the application, the suspension nut (4g) does not fall down when the suspension nut (4) is used correctly, when the fixing nut (4b) is used upside down, or when the suspension nut (4) called the support nut (4a) is used upside down. Providing the lateral groove 4f on the main surface of the nut 4 increases the effect.

The joint nut 4c has a structure for fastening the long and up-down symmetrical split pins 4g, so that the loosening of the suspension rod 3 is completely suppressed while the recycling nut is easily dismantled.

In FIG. 4, the detachable suspension formwork 100a precisely constructs a beam / slab structure 200 having square inner and outer corners that combine the horizontal and vertical portions at right angles, and uses the detachable elevator 15 to form the detachable suspension formwork 100a. In this case, the detachable suspension formwork 100a is assembled so that it can be demoulded, lowered, and reinstalled quickly without deforming.

In FIG. 5, the beam bottom suspension formwork 101 of the detachable suspension formwork 100a is demolded, lowered to a predetermined position, and then reinstalled.

In FIG. 6, the initial working state of the beam suspension formwork 101 of the detachable suspension formwork can be demolded and lowered to a predetermined position, and the slab suspension formwork 102 is demolded and lowered.

In FIG. 7, the slab suspension formwork 102 of the detachable suspension formwork was demolded and reassembled after finishing the descending operation to obtain such a pattern.

Due to the weight of the concrete, the triangular variable pedestal 13, which is installed to resist the beam side suspension formwork 103 from being pushed outwards, is installed on the joist 7 of the beam formwork suspension formwork 101, and thus the suspension formwork for the beam bottom is formed. When demolding and lowering 101, the triangular variable stand 13 is also lowered so that demoulding of the beam side suspension form 103 in a subsequent process is not impeded.

Suspension formwork 103 for the beam side is an iron plate By bending the shape and making holes in the upper and lower horizontal portions, and fixing the nail 11a to fix the beam, the suspension formwork 103 for the beam side is assembled to allow vertical movement but not horizontal movement.

Since the beam side formwork 103 is thinner than the plywood 10, the height difference occurs when the plate is placed on the plywood 10, and the suspended formwork for the beam side is excluded in order to eliminate the difference in the finish surface. If the plywood 10, which is thin enough to be the thickness of the steel plate for 103, is laid first and then the bending iron plate for the beam side suspension form 103 is superimposed and fixed thereon, even if horizontal horizontal phenomenon of the beam side suspension formwork 103 occurs, Since the plywood 10 of the layer serves as a horizontal support material, the jungle phenomenon is suppressed.

When building the beam / slab structure 200 and demolding and lowering the slab suspension formwork 102, the slab suspension formwork 102 prevents the connection state of the beam side suspension formwork 103 from being separated. The spring 12 is provided.

Thus, when the slab suspension formwork 102 is lowered by a certain distance, the beam side suspension formwork 103 pressed against the concrete beam / slab structure 200 is pulled downward in the direction of 45 ° and the slab suspension formwork 102 is deformed. They will descend along with you.

In FIG. 7, the demolding and descending operation of the detachable suspension formwork 100a sends the pressure oil to the hydraulic cylinder 16 using an oil pump to push or pull the ram 15g with the force, thereby demolding the suspension formwork 100. It allows for repeated work of lowering and reassembling.

At the upper part of the beam / slab structure 200 previously constructed with the lifting formwork 100 with the demolding elevator 15, loosen the joint nut 4c of the suspension rod 3 at each corner and the center, and then with the demolding elevator 15. At the same time, each of the plurality of suspension rods (3) installed in the suspension formwork (100) when the demolding elevator (15) is pushed down and the mold form (100) is pushed down and lowered by replacing each of them, Removing the fixing nut (4b) and the joint nut (4c) of the part and uses a fastening work 17 for the construction of the workspace to replace the fastening rod 3 to the demolding elevator (15).

After simply fastening the demolding elevator 15 by using the fastening work table 17 and releasing the joints for the remaining suspension rods 3, the suspension formwork 100 is demoulded and lowered depending on the demolding elevator 15 only. In the repetitive suspension work, the restoring work is first performed by fixing the joint nut (4c) and the fixing nut (4b) of the remaining suspension rods (3) that are not fastened, and then the suspended suspension by tightening the demolding elevator (15). After dismantling and removing the demolding elevator 15 and the squeezing platform 17 of the rod 3, the suspension rod 3 is connected to the joint nut 4c again and the fixing nut 4b is fastened to restore the suspension function. Suspension formwork 100 is not at all difficult to repeat the suspension, reassembly and demoulding and descending.

In FIG. 8, the beam / slab structure 200 having right and right corners inside and outside corners in the integrated suspension formwork is precisely constructed, and the integrated suspension formwork 100b is deformed very quickly without using the demolding elevator 15. The assembly of the one-piece suspension formwork (100b) that can be demoulded, lowered, and re-installed has the disadvantage that the required materials are increased, but since the demolding and lowering work processes are reduced, the required manpower and working time are greatly reduced.

In FIG. 9, the initial working state when demolding and descending the integrated suspension formwork 100b can be seen, and the triangular pedestal 13 which resists the beam side suspension formwork 103 from pushing outwards is mounted on the joist 7. When the integrated suspension formwork 100b is demolished and lowered by being installed on it, the triangular support 13 is also lowered together, so that when demoulding the beam side suspension formwork 103, the concrete beam / slab structure 200 is not disturbed. The beam side suspension formwork 103, which is pressed on the side), is pulled down in the downward 45 ° direction and descends together while being mounted on the integrated suspension formwork 100b.

Even in this case, the beam side suspension formwork 103 is a steel plate By bending the shape and making a hole in the upper and lower horizontal portions, and then by fixing the nail 11a, the beam side suspension form 103 is assembled to allow vertical movement but not horizontal movement.

The beam side formwork 103 has a height difference when the thickness of the iron plate is thin on the plywood 10 compared to the plywood 10, so that the beam side suspension formwork is excluded to exclude the phenomenon that the finishing surface protrudes. When the plywood 10, which is thin enough to be the thickness of the iron plate for 103), is laid first and the bending iron plate for the beam side suspension form 103 is superimposed on it, even if the horizontal sliding phenomenon of the beam side suspension formwork 103 occurs, the thick layer Since plywood 10 serves as a support of the horizontal direction, the jungle phenomenon is suppressed.

When building and lowering the slab suspension formwork 102 after constructing the beam / slab structure 200, the slab suspension formwork 102 is used to prevent the beam side suspension formwork 103 from being disconnected. Spring 12 is installed,

When the slab suspension formwork 102 is lowered by a certain distance, the beam side suspension formwork 103 pressed against the concrete beam / slab structure 200 is pulled downward from the 45 ° direction and mounted on the detachable and integral suspension formwork 100b. It will descend with you together.

In FIG. 10, it is sectional drawing of the slab suspension formwork 102 of the integrated suspension formwork 100b which was reassembled after completion | work of the lowering work to demoulding and predetermined position.

By installing the demolding elevator 15 and the fastening work table 17 of FIG. 11, the pressure oil of the oil pump for propelling the demolding and descending work of the suspension formwork 100 is sent to the hydraulic cylinder 16 so as to provide two rams (15g). By pushing down), the suspension formwork 100 is demolded and lowered.

At the upper part of the beam / slab structure 200 previously constructed with the demolding elevator 15, the joint nut 4c of each corner portion of the suspension formwork 100 and the central side suspension rod 3 is removed and the demolding elevator 15 is released. After replacing with each of the demolding elevator (15) by operating the suspension formwork (100) down to demold, descending work.

The demolding elevator 15 is a fastening of the crown tube 15c supported by the ring nut 15b to a semi-circular coarse screw 15a, and is stretched in accordance with the left and right rotation of the ring nut 15b. The support function for the upper beam / slab structure 200 of the layer is installed so as to accommodate the height and release reaction force of the working layer in accordance with the overcoat 15c.

And the work of dismantling, demolding and lowering the fixing nut 4b and the joint nut 4c of each corner part and the center part among the plurality of suspension rods 3 installed in the suspension formwork 100 is replaced by the demolding elevator 15. do.

Securing the work space necessary to replace the demolding elevator (15) is simply fastened using a fastening work table (17) and then dismantling the rest of the suspension rods (3), the suspension formwork (100) is only a demolding elevator (15). Descends depending on

After that, the repetitive suspension work is again performed by fixing the joint nut 4c and the fixing nut 4b of the remaining suspension rod 3 that are not fastened, and then performing the restoration restoration work first, and then tightening the demolding elevator 15 and descending. Suspended rod 3 has been removed by removing the demolding elevator 15 and the crushing work table 17, and then suspended using the suspension rod 3, the joint nut 4c and the fixing nut 4b.

As described above, the demolding elevator 15 of the suspension formwork 100 repeatedly uses both the reassembly and demolding of the suspension and the lowering function.

The inside of the demolding elevator 15 is a two-stage ram 15g structure, which can easily accommodate the height change of the next descending layer, and the fastening structure given at the end of the two-stage ram 15g is a union nut 15d. And chain 15f to accommodate the universal joint 15e function, the chain 15f acts directly on the advanced ram 15g even if the suspension formwork 100 is tilted in either direction during the descent operation. The horizontal influence of the slope is converted vertically to the role of the universal joint 15e of the chain 15f to neutralize its influence.

Figure 12 is a cross-sectional view (a) and assembly L of the assembly structure for easy assembly and disassembly easy to minimize damage to the user material when using the yoke (6) and the pipe joists (7a) for assembling the suspension formwork 100 -Type fastener perspective view (b) Assembly plan view (c) Another assembly cross-section (d), yoke (6) and joist for coupling and fixing the pipe joist (7a) or the wood joist (7b) to the yoke (6a) At the point where (7) intersects, cut a hole in the upper surface of the square yoke (6a) and screw the L-shaped fastener (23) into the hole to install the pipe long (7a) or hardwood long (7b) installed on the top. 11b) It is easy to accept the easy assembly and disassembly because it is fixed, thereby minimizing the damage of the user material, and it is easy to maintain structural stability in the future dismantling rehabilitation.

Figure 13 is a cross-sectional view (a) of a simple assembly and easy disassembly assembly structure that minimizes damage to the user material when using the H-shaped yoke (6b) and the joist (7a) of each pipe for assembling the suspension formwork 100 (B) Assembling plan view (c) Assembling view of the L-shaped bolt and the L-shaped clamp (L) At the point where (6) and the joist (7) intersect, hang the L-shaped clamp (22) on the upper flange of the H-shaped yoke (6b), and insert an L-shaped bolt (19) through the hole of the clamp (22). By drilling a hole in the lower surface of each pipe joist (7a) installed in the upper part, the L-bolt (19) is clamped and locked by tightening the nut (4), so it is easily accommodated for easy assembly and disassembly. In the future, it is easy to maintain structural stability in decommissioning rehabilitation.

14 is a cross-sectional view of a simple assembly and disassembly easy assembly structure to minimize damage to the user material when using the yoke (6b) and the joist (7b) of the H-shaped steel for assembling the suspension formwork 100 (a (B) Assembling plan view (c) Assembling lumber joist (7b) to H-shaped yoke (6b) with another assembly cross section (d) L-shaped clamp 22 is placed on the upper flange of the H-shaped yoke 6b where the yoke 6 and the joist 7 intersect. 21) A 75 ° L-shaped square bolt (19) is fastened to the lumber joist (7b) to be installed on the upper part, and the nut (4) is fastened and fixed. In this way, it is easy to maintain structural stability in future decommissioning rehabilitation.

15 is a cross-sectional view (a) of the assembling structure for easy assembly and disassembly that minimizes damage to the user material when the variable beam yoke 6c and the variable beam joist 7c are used for assembling the suspension formwork 100. Assembly fastener perspective view (b) Assembly plan view (c) Another assembly cross-section (d) is a long hole installed at a predetermined interval on the lower surface of the variable beam by turning the variable beam fastener 23 is inserted into the long hole to be caught in the lower variable beam Fastening the variable beam fasteners (23) wrapped around the yoke (6c) tightens the bolts (18) and the nuts (4) so that easy assembly and disassembly can be easily accommodated, thereby minimizing damage to the materials used. Easy to maintain

As described above, the present invention relates to patents No. 9921, 236708 and No. 85 of Construction No. 85, in which a formwork assembled when constructing a beam / slab structure of a first layer is laid in a construction structure. It is a suspension formwork method that overcomes technical difficulties of hanging formwork and has advanced technological economic power.It is made of temporary corners, pipes, H-beams, plywood, etc. 편리한 The technology is more convenient and innovative.

In addition, it is composed of a detachable suspension formwork and an integrated suspension formwork, which are separated and combined into the bottom and side formwork of the beam, and the slab formwork to facilitate the demoulding of the suspension formwork. Underground suspension formwork can be used to build underground concrete structures.

In addition, the process of fastening the demolding elevator to the suspension rod of the suspension formwork at the upper part of the pre-constructed beam / slab structure by pushing it down and demolding and descending is effective not only to prevent breakage due to the dropping of the formwork, The descent work is promoted safely.

The suspension of formwork in the suspension formwork is a yoke for structural stability and easy securing of a wide range of suspensions.The yoke is convenient for fixing plywood to nails made of durable pipes and H-beams. However, steel yoke and wood joists are heterogeneous, easily fixed and dismantled. Yoke and joist that can be recycled can be reused. Or, fix the wooden joist to the point where the yoke and the joist cross the L-shaped clamp on the upper flange of the H-beam yoke, and then insert the L-shaped clamp bolt penetrating the hole of the clamp to install the upper The hanging formwork of the L-type clamp bolt is fixed by tightening the nut to fix it. Solubility is very good.

In addition, the part buried in concrete in the suspension rod is protected by a conical tube sleeve, so that even if the concrete is buried is not fixed and easy to fall later.

In addition, as an essential safety device that suppresses loosening of the rod, fixing and supporting nut by working vibration, V-type longitudinal grooves formed vertically on both sides of the suspension rod and halpin grooves are given in the vertical triangular direction inside the suspension nut. Since it is inserted and fixed, the suspension nut with large cross section can be forcibly rotated, so that it can be recovered and recycled without damage even if it is too hard.

Claims (12)

In the reverse casting construction of the basement structure, the suspension formwork 100 which hangs on the construction beam / slab structure 200 when constructing the beam / slab structure 200 of the first layer is subjected to continuous excavation without obstacles to the next floor. To secure the construction space for the construction structure 200, using the demolding elevator 15, demolding down the suspension formwork 100, the formwork for building downstairs beam / slab structure while being supported by the construction structure 200 Recycling to the suspension formwork, characterized in that assembling the suspension formwork 100, using a temporary hypothesis, wood pipe, H-shaped steel, plywood and the like. The suspension formwork according to claim 1, wherein the suspension formwork 100 is divided into beam suspension formwork 101 for slab, suspension formwork 102 for slab, and suspension formwork 103 for beam side. Suspension formwork characterized by 100a). The suspension formwork according to claim 1, characterized in that the suspension formwork (100) comprises an integral suspension formwork (100b) constituting a beam side / slab and a beam side suspension formwork (103) to facilitate demoulding. 3. The suspending die (100) is fitted with a lower end of the suspending rod (3) to a fixing nut (4b) of the suspending plate (2), and the suspending die (3) is attached to the upper end of the suspending rod (3). The yoke (6a) is installed on both sides of the suspension pedestal (5), and the U-bolt (8) is fixed on both sides of the suspension pedestal (5). 7a) is installed, and the wood block joist 7b or the pipe joist 7a installed at the upper part by hooking the hole on the upper surface of the yoke tube 6a at each intersection to pull the L-shaped fastener 23 into the hole. Suspension formwork with characteristic of laying plywood 10 on joist 7 fixed with screw 11b 3. The suspending die (100) is fitted with the lower end of the suspending rod (3) to the fixing nut (4b) of the suspending plate (2), and the suspending rod (3) reinforces above the upper fixing nut (4a). Mounting height since the fixing rod 4a is fixed to the suspending rod 3 which penetrates the central axis of the reinforcing plate 2b on the plate 2b and the H-shaped yoke 6b. Supporting the flexible tube joist 7a A hole is cut in the lower surface of the tube joist 7a at each intersection of the yoke 6, and the L-shaped clamp 22 is fitted by engaging the L-shaped bolt 19 with the hole. Suspension formwork method characterized by tightening the nut (4) fastening the flange of the H-beam yoke (6). 3. The suspending die (100) is fitted with the lower end of the suspending rod (3) to the fixing nut (4b) of the suspending plate (2), and the suspending rod (3) reinforces above the upper fixing nut (4a). Plate (2b) H-beam yoke (6), which can be easily changed in height with a fixing nut (4a), to a suspension rod (3) that penetrates the central axis of the reinforcement plate (2b) on the H-beam yoke (6b) (6b) ) And lower the 75 ° L-shaped clamp bolt (21) to the wood joist (7b) at each intersection using the wood joist (7b) and insert the L-shaped clamp (22) in the lower part of the H-shape. Suspension formwork for fixing the flange of the yoke (6) nut (4) prisoner and fixing the plywood (10) with a laying nail (11) on the joist (7b). In claim 1, the beam side suspension formwork 103 is a steel plate It is bent into a shape and fixed to a flat nail 11a by making a hole at a predetermined interval in the upper and lower horizontal portions so that vertical movement can be performed, so that the mold die 100 can be demoulded and the mold die 102 for slab can be easily lowered. When the spring 12 connected to the beam side suspension formwork 103 to the city beam concrete structure 200 descends a predetermined distance, the iron plate of the beam side formwork 103 pressed onto the beam / slab structure 200 is lowered. 45。 Suspension formwork which is pulled down and allowed to descend along the suspension formwork for slab (102). In claim 1, the suspension formwork 100 is a triangular variable pedestal (13) to suppress the beam side formwork 103 to be pushed out due to the concrete placing weight of the beam / slab structure 200 having an inner and outer corners Suspension formwork, characterized in that to achieve a smooth demoulding of the beam bottom suspension formwork 103 by installing on the joist (7) of the beam bottom suspension formwork (101). 9. The triangular variable pedestal (13) according to claim 8, wherein the triangular variable pedestal (13) has a nut (19) on top of the rear steel tube to accommodate the height difference of the beam of the beam / slab structure (200) in the upper slab suspension formwork (102). Suspension formwork, characterized in that to accommodate the changed beam height difference of the beam / slab structure (200) according to the fastening degree of the bolts (18) attached to them. The suspension formwork method according to claim 1, characterized in that the conical tubular sleeve (14) is inserted into a portion buried in the concrete in the suspension rod (3) to maintain a free state that is protected from being fixed to the concrete. 2. The demolding elevator (15) is made of a thick screw (15a) and a ring nut (15b) bearing tube (15c) to extend and contract the length of the hydraulic cylinder (16) of the thick screw (15a). It is easy to secure a long length by inserting two-stage ram (15g) inside, and at the bottom of the ram (15g) that accommodates the height change, it is for connecting the chain (15f) and the suspension rod (3) that serve as universal joints (15e). Suspension formwork method characterized by easy assembly and disassembly by attaching a union nut (15d). The suspension formwork according to claim 1, characterized in that a joining work platform (17) for fastening and dismantling the joint of the suspension rod (3) of the suspension formwork (100) is used for disassembling and removing the lifting elevator (15). Method.