KR101463924B1 - the detachable deck plate structure - Google Patents

Abstract

The present invention provides a detachable deck plate structure in order to install a deck plate (D) in which truss reinforcement (100) is fixed to a fixing hole (300) and to de-mold the deck plate (D) after casting concrete (C), thereby facilitating de-molding of the deck plate (D). In addition, the fixing hole (300) comprises: a fixing pipe (320) which is formed with a circular rod insertion hole (321) on a lower part, formed with a fixing pin expansion slit (325) on an outer peripheral surface, and formed with a lower chord fixed groove (322) on an upper part; a fixing pin (324) which is fastened to the fixing pin expansion slit (325) with elastic force; and a fixed key (310) which contains a circular rod (312).

Description

The detachable deck plate structure < RTI ID = 0.0 >

The present invention relates to a deck plate structure for removing a deck plate easily after concrete pouring or curing in a deck plate structure, and which can be applied without a separate design change and which has a simple structure and is easy to install and detach by one- will be.

In the 3D field such as the construction due to the upgrading of the labor force due to economic growth, the shortage of labor force is a serious problem. As a result, there is a limit to the manpower-based construction method that does all the work on the site in the past, and the application of prefabrication that minimizes the process in the field is increasing.

In the construction frame construction, a representative example of such prefabricated construction is a steel frame structure, and a partial construction method is a deck plate construction method for a PC or a mold substitute. In the case of Korea, the PC method not only requires precision in design construction, but also is used in a limited manner because it is avoided due to difficulty in transportation and field loading with heavy materials. On the other hand, deck plate is light in weight and relatively easy to transport and field, And is widely used.

The deck plate method is applied to the steel structure. It uses a thin steel plate bent to increase the plate rigidity instead of the plywood for the slab formwork. It is easy to install and there is no form disassembly. In span of 4m or less applied to general slab, It is possible to put multiple layers of concrete at one time, and thus it is excellent in shortening the air.

In addition, deck plates for deck trusses and truss-type deck plates have been developed to reduce the amount of steel reinforcement work in the field. The truss-type deck plate is constructed by welding a solid steel plate, a bottom plate composed of a lower steel plate and a deck plate, through a lattice to complete a structurally functionable truss, and a deck plate to transmit a concrete load to the truss As a role, it will work as a structural reinforcing bar after concrete hardening, making it possible to work without load. In addition, since the general deck plate is bent to increase the bending stiffness of the plate, a sealing action is required to prevent leakage when the concrete is pushed against the bent surface at the joining portion with the beam, while the deck plate of the truss has the bending stiffness Therefore, a plate type deck plate can be used, so that it can be used not only in a steel frame structure but also in a reinforced concrete structure.

However, since such a deck plate method also has drawbacks, corrosion of the galvanized steel sheet which is resistant to corrosion is caused by long-term use of more than 50 years, and when the leakage occurs in the slab, the deck plate covers the slab bottom, There is a maintenance problem because it can not be found.

Therefore, in order to solve the disadvantages of utilizing the advantages of the deck plate from the long-term perspective, a deck plate is required to be used as a formwork at the time of construction, and a method of removing the deck plate to facilitate maintenance is required.

As an alternative to the conventional method, a method (Patent Registration No. 10-0498815, 10-0993879) which allows a plywood to be demolded after concrete curing using a plywood instead of a truss reinforcing bar and a deck plate is applied. However, Since the length of the plywood is limited by the standardization of the plywood, the plywood is applied only as a pure form without the structural function and is structurally disadvantageous as compared with the conventional truss type deck plate, It is difficult to construct because it is heavy.

However, a strong adhesive force between the concrete and the deck plate is expected to result in difficulty in demoulding and damage of the deck plate. [0005] However, Reuse of the deck plate is considered impossible.

The above-mentioned inventions constitute a triangular section in a cross-sectional shape with the stiffener at the top and the stiffener at the top for the uprighting of the truss reinforcing bars. Therefore, the number of engaging portions to be attached and detached from the deck plate (or plywood) Since the method of separating from reinforcing bars uses screw type or wedge type joint clip and wedge pin, much effort is required for installation and disassembly. Especially, in order to disassemble in the field, it is necessary to carry out a large amount of work in an uncomfortable position looking at above the height of 3 m or more. Therefore, there is a problem in safety as well as workability.

[Document 1] Korean Patent No. 1237330 'Spacer for Deformable Deck', 2013.02.28. [Patent Document 2] Korean Registered Patent No. 1237325 'Deformable deck', 2013.02.28.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the related art. The purpose is as follows.

First, when the deck plate is cast into concrete, the deck plate structure that does not need to be tilted in a span of 4 m or less applied in a general slab is provided, and a detachable deck plate structure capable of demolding after concrete hardening is provided.

Second, it is intended to provide a detachable deck plate structure which is easy to attach and detach from a truss reinforcing bar and a deck plate so that an unskilled person can easily and safely and economically construct.

Third, unlike the conventional plywood type, the deck plate is not limited in length, and a deck plate can be structured and provided with a detachable deck plate structure that is easy to manufacture and install.

Fourth, the present invention provides an eco-friendly detachable deck plate structure which can be reused by minimizing damages caused by deformation of the deck plate.

Fifth, it is intended to provide a detachable deck plate structure which can be maintained in long-time use, for example, measures against leakage of slabs and the like by de-molding of deck plates.

The present invention provides a deck plate D in which a truss reinforcing bar 100 is fixed to a fixture 300 and a deck plate D is demolded after a concrete C is installed,

Wherein the lower surface of the concrete (C) is separated from the upper surface of the deck plate (D) when the fixture (300) is detached, thereby facilitating the de-molding of the deck plate (D).

In addition, the fixture (300)

A fixing pipe 320 in which a circular bar insertion hole 321 is formed in a lower portion, a fixing pin widening slit 325 is formed in an outer circumferential surface thereof, and a lower current fixing groove 322 is formed at an upper end thereof;

A fixing pin 324 fastened to the fixing pin widening slit 325 with an elastic force;

A fixing key 310 including a circular rod 312 having a fixing pin binding slit 313 formed on an upper outer circumferential surface thereof;

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The lower current 120, which is a lower member of the truss reinforcing bar 100, is inserted and fixed in the lower current fixing groove 322,

The circular bar 312 of the fixing key 310 is inserted into the circular bar through hole D1 formed in the deck plate D so that the fixing pin 324 is inserted into the fixing pin widening slit 325 and the fixing pin 324, When the fixing pin 310 is rotated 90 degrees, the binding state of the fixing pin binding slit 313 is released from the fixing pin 324, And the deck plate (D) is demolded from the concrete (C) because the key (310) can be detached from the deck plate (D).

According to the present invention, the following effects are expected.

First, the deck plate provides a removable deck plate structure capable of deformation after concrete curing, while the deck plate has a dowel-free form function in a span of 4 m or less applied to a general slab.

Second, it provides a detachable deck plate structure that can easily be installed and disassembled between a truss reinforcing bar and a deck plate, so that an unskilled person can easily and safely and economically construct.

Third, unlike the conventional plywood method, the deck plate is not limited in length and provides a detachable deck plate structure in which the deck plate can be structured and can be easily manufactured and installed.

Fourth, an eco-friendly detachable deck plate structure capable of minimizing damage due to demoulding of the deck plate and reusable is provided.

Fifth, a detachable deck plate structure capable of maintenance for long-time use, such as being able to take measures against leakage of slabs and the like by de-molding of deck plates, is provided.

1 is an assembled perspective view of a removable deck plate structure of the present invention.
2 is an exploded perspective view of the detachable deck plate structure of the present invention.
3 is an exploded perspective view of the fastener in the detachable deck plate structure of the present invention.
4 is a cross-sectional view of Fig.
FIG. 5 is a view showing a process of combining the detachable deck plate structure of the present invention in order.
FIG. 6 shows a sequential process of separating the detachable deck plate structure of the present invention.
7 is a view showing a hanger engaging process in the detachable deck structure of the present invention.
8 shows another embodiment of the detachable deck plate structure of the present invention.
Fig. 9 shows the operation of the control band in the detachable deck plate structure of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view of the detachable deck plate structure of the present invention, FIG. 2 is an exploded perspective view of the detachable deck plate structure of the present invention, and FIG. 3 is an exploded perspective view of the detachable deck plate structure of the present invention. And Fig. 4 is a sectional view of Fig.

The detachable deck plate structure of the present invention is for disposing the deck plate D after installing the deck plate D in which the truss reinforcing bar 100 is fixed by the fixture 300, The deformation sheet 200 is installed on the top of the decking plate D so that the deformation sheet 200 separates the lower surface of the concrete C and the upper surface of the deck plate D Thereby facilitating demoulding of the deck plate (D).

The decking sheet 200 may be omitted and the lower surface of the concrete C and the upper surface of the deck plate D may be separated from each other when the fixture 300 is detached, And the like.

In the present invention, the truss reinforcement 100 and the deck plate D are integrated with each other through the fixture 300 to bear the structural load due to the construction, so that the concrete C is installed without spending the span within 4 m, And the deck plate D can be demolded by separating the truss reinforcing bar 100 and the deck plate D from the mold 300 after the concrete is cured.

The truss reinforcing bar 100 generally comprises a phase current 110, a bottom crest 120 and a lattice 130 to function as a truss structure. By connecting the truss reinforcing bars 100 in the transverse direction, A latch 140 is provided to allow the latch 140 to stand upright.

The truss reinforcing bar 100 is formed by continuously bending the lattice 130 welded to the top 110 and the bottom 120 to form a mechanical truss structure. The truss reinforcement 100 functions as a structural reinforcing bar after the concrete is cured while allowing the work load to be imposed due to the burden of the construction load due to the function of a truss when the concrete is poured. The lower current 120 functions as a lower load bearing the tensile force, and the lattice 130 functions as a shearing power source.

On the other hand, the latches 140 allow the trusses to be three-dimensionally upright by connecting and fixing the trusses in the transverse direction, thereby minimizing the coupling with the deck plate D, providing ease of construction and structural stability, 110 to prevent buckling.

In order to reduce the joint portion with the fixture 300, the reinforcement 120 and the lower reinforcement 120 may be formed by using a deformed reinforcing bar for the integration with the concrete, desirable. The lattice 130 and the latch 140 are preferably made of a steel material having good weldability as a circular reinforcing bar in consideration of workability.

It is possible to apply any type of structure such as Warren Truss or Vierendeel Truss if it functions as a truss, and latch 140 can also serve as a function of Lattice 130 Do.

The deck plate (D) is a flat plate type in consideration of easiness of production and economical efficiency. The deck plate (D) is a plate type in which the upper part is flat and the lower part is bent Structurally reinforced forms such as plates are also possible.

Since the material of the deck plate D is preferably as thin as possible in consideration of the application load and hardness and is free from corrosion, it is preferable to use a galvanized steel sheet having a thickness of about 0.5 to 0.8 mm. However, since there is no welded joint with the truss reinforcing bar 100 In addition to the deck plate (D), plywood and reinforced plastic are also applicable.

The de-molding sheet 200 is used to enable a de-molding to be practically impossible because the steel material is excellent in adhesion to the concrete C and the deck plate D is a thin flat plate and is highly likely to be damaged during demoulding. A PE (Expandable Polystyrene) sheet having a thickness of about 3 to 5 mm is preferable. However, a PE (Expandable Polystyrene) sheet having a thickness of about 3 to 5 mm is preferable, but it is not necessarily a sheet type if it is used to block adhesion between a deck plate D and concrete C,

2 to 4, the fixture 300 includes a circular bar insertion hole 321 formed at a lower portion thereof, a fixing pin widening slit 325 formed at an outer periphery thereof, and a lower current fixing groove 322 formed at an upper end thereof. A formed fixing pipe 320; A fixing pin 324 fastened to the fixing pin widening slit 325 with an elastic force; And a fixing pin 310 including a circular rod 312 having a fixing pin binding slit 313 formed on an upper outer circumferential surface thereof,

The lower current 120 which is a lower member of the truss reinforcing bar 100 is inserted and fixed in the lower current fixing groove 322 and the fixed bar 100 is inserted into the circular bar through hole D1 formed in the deck plate D, 310 are inserted and the fixing pin 324 is fastened together with the fixing pin widening slit 325 and the fixing pin binding slit 313 with elastic force, The fixing pin binding slit 313 is released from the fixing pin 324 so that the fixing key 310 can be separated from the fixing pin 324 when the deck plate D is rotated by 90 degrees, ).

A male thread 323 is further formed on the outer circumferential surface of the lower fixing groove 322 so that the lower thread 120 is inserted into the lower fixing groove 322 and the nut 330 And fixing the lower current 120 by fixing the lower current 120.

The fixing pipe 320 has a concave shape and a circular bar insertion hole 321 in which a circular bar 312 of the fixing key 310 is inserted is formed at a lower portion of the fixing pipe 320, A male screw thread 323 for fastening the lower fixing pin 322 and the fixing nut 330 for fastening the fixing pin 310 is fixed to the upper portion of the circular rod insertion hole 321, A U-shaped fixing pin 324 for engaging with the slit 313 and an elastic restoring force protrudes and a fixing pin widening slit 325 for widening the fixing pin 324 is formed.

Since the material of the fixing pipe 320 is exposed to the surface of the concrete, it is preferable to use hard plastic without corrosion, but it is also possible to prepare a steel against corrosion. In addition, in the case of forcible welding, welding of the truss reinforcing bar 100 to the lower part 120 is also possible. The fixing pin 324 is preferably a steel wire or a piano wire because it has good elastic restoring force and strong resistance to impact.

A handle 311 formed with a jaw 315 is formed under the circular bar 312 and a spring washer 314 is fastened between the jaw 315 and the deck plate D so that the spring washer 314 ) Removes the clearance between the lower portion of the fixing pipe (320) and the upper surface of the tech plate (D).

The fixed key 310 has a handle 311 for rotating and pulling when dismounting the handle 311. The handle 311 is inserted into the fixing pipe 320 from the center of the handle 311, And a fixing pin 320 and a fixing pin binding slit 313 for binding are formed on both sides of the circular rod 312 and the circular rod 312. The material is resistant to the load and impact at the time of concrete pouring, and the steel is preferable because it is necessary to keep the binding, but hard plastic is also possible.

The handle 311 may be any shape as long as it is easy to disassemble. However, it is preferable that the handle 311 is formed in a 'W' shape so that the tool T for disassembly or the like can be used.

The spring washer 314 reinforces the clearance formed by the manufacturing error in the fixing key 310, the deck plate D, and the fixing pipe 320 to strengthen the binding and facilitates the separation of the fixing key 310, A steel having a high restoring force is preferable.

7 is a view showing a hanger engaging process in the detachable deck structure of the present invention.

7, a hanger H having a slit H1 having a shape similar to that of the fixing pin binding slit 313 is formed at a separated position after the fixing key 310 is detached, And the fixing pin 324 is inserted into the fixing pin widening slit 325 and the slit H1 together with elastic force. That is, after the concrete is cured, the fixture 300 functions as a hanger insert.

FIG. 5 is a view illustrating a process of assembling the detachable deck plate structure of the present invention in order, and FIG. 6 is a view illustrating a process of detaching the detachable deck plate structure of the present invention in order. Sectional view for clarity, and partially in horizontal cross-sectional view at the location of the fixing pin 324. FIG.

5,

(1) The circular bar 312 of the fixing key 310 is protruded upward from the bottom of the deck plate D through the circular bar through-hole D1 so that the circular bar insertion hole 321 of the fixing pipe 320 is inserted into the fixing pin- When the circular rod 312 is inserted with the fixing pin 314 and the fixing pin 324 positioned in the same direction,

(2) When the distal end of the circular rod 321 is widened and inserted into the fixing pin binding slit 313, the fixing pin 324 protruding into the hole 321 is elastically restored, The fastening slot 310 is mechanically engaged with the binding slot 313 so that the insertion is stopped and the fastening key 310 and the fastening pipe 320 are integrated with each other. As a result, the fastener 300 is fixed to the deck plate D,

3) When the lower current 120 of the truss reinforcing bar 100 is inserted into the lower current fixing groove 322 on the upper portion of the fixing pipe 320 and fixed by the fixing nut 330, the fixing key 310, the deck plate D, The connection of the fixing pipe 320 and the truss reinforcing bar 100 is completed and structurally functions.

6,

1) When the handle 311 of the fixed key 310 is rotated 90 ° from the bottom of the deck plate D after the concrete (C) is cured, the fixing pin 324 is pushed by the outer peripheral surface of the circular rod 312, The mechanical coupling with the slit 313 is released and as a result, the fixed key 310 and the fixed pipe 320 are separated, and the fixed key 310 can be moved up and down.

(2) If the fixing key 310 is pulled down, the deck plate D and the truss reinforcing bar 100 are disengaged.

(3) Since the de-molding sheet 200 does not bond the deck plate D with the concrete C, de-molding of the deck plate D is facilitated. The de-molding sheet 200 is normally bonded to the slab by a heat insulating material and can be easily removed during maintenance such as leakage of water. The fixed key 310 and the deck plate D are reusable and eco-friendly.

Fig. 9 shows the operation of the control band in the detachable deck plate structure of the present invention.

9, the present invention includes a control band 400 for removing a plurality of fixed keys 310 installed in a row at a time, the control band 400 having a plurality of moving slits 410 formed in a row And the control band 400 is provided at the side of the handle 311 and at the center of the control band 400 with a hinge-coupled link 420. When the control band 400 is pulled or pushed, And the fixed key 310 is rotated by 90 degrees by the link 420. [0043] FIG.

The embodiment using the control band 400 collectively separates the plurality of fixed keys 310 for the sake of operational efficiency, while the embodiment of the above-described embodiment separates the fixed keys 310 individually, A control band 400 disposed below the plate D and having a plurality of movable slits 410 of a width of the fixed key 310 and made movable to the right and left moves the handle 311 of the fixed key 310 to the crank When the knob (not shown) provided on the band 400 is pulled, the force transmitted from the link 420 is converted into a rotational motion through the crank and is transmitted to the fixed key 310, The fixing key 310 can be detached from the fixing pipe 320 by rotating the fixing key 310 by 90 degrees.

8 shows another embodiment of the detachable deck plate structure of the present invention.

8, the deck plate D is provided with a fixing key 310 at a lower portion thereof and a fixing pipe 320 at an upper portion thereof. On the other hand, A fixing pipe 320 'is provided at the lower part and a fixing key 310' is provided at the upper part. However, in the case of the other embodiment, it is preferable that the material of the fixed key 310 'is welded directly to the lower current 120 of the truss reinforcing bar 100 by using steel, and it is relatively more complicated than the fixed key 310' It is economical to reuse the expensive fixing pipe 320 '.

[0052] Referring to another embodiment of the present invention shown in FIG. 8 in detail,

The fixture (300)

A fixed key 310 'including a circular rod 312' having a fixed pin binding slit 313 'formed on a lower outer peripheral surface thereof; A fixing pipe 320 'having a circular rod insertion hole 321' formed at an upper portion thereof and a fixing pin widening slit 325 'formed at an outer peripheral surface thereof; And a fixing pin 324 'which is fastened with an elastic force to the fixing pin widening slit 325'

The circular rod 312 'of the fixed key 310` is inserted into the circular bar through-hole D1 formed in the deck plate D so that the fixing pin 324` is inserted into the fixing pin widening slit 325` ) And the fixing pin binding slit 313 'are urged together with an elastic force and when the fixing pipe 320' is rotated by 90 degrees, the fixing pin 324 ' The deck plate D is demolded from the concrete C because the binding state is released and the fixed key 310 'can be separated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

It is therefore intended that the appended claims cover such modifications and variations as fall within the true scope of the invention.

C: Concrete
D: Deck plate
D1: Circular bar through hole
100: Truss reinforcement
110: Award current
120: Height current
130: Lattice
140: latch
200: Deforming sheet
300: Fixture
310, 310`: fixed key
311, 311`: Handle
312, 312 ': circular rod
313, 313`: Fixing pin binding slit
314: Spring washer
315: jaw
320, 320`: fixed pipe
321, 321`: Circular rod insertion hole
322: Lower current fixing groove
323: Male threads
324, 324`: Fixing pin
325, 325`: Fixing pin widening slit
330: Nut
400: control band
410: movable slit
420: Link
T: Disassembly tool
H: Hanger
H1: Slit

Claims (7)

delete A truss reinforcing bar 100 is provided with a deck plate D fixed by a fixture 300 and a deck plate D is detached after a concrete C is installed.
The lower surface of the concrete C and the upper surface of the deck plate D are separated from each other when the fixture 300 is detached to facilitate demoulding of the deck plate D,
The fixture (300)
A fixing pipe 320 in which a circular bar insertion hole 321 is formed in a lower portion, a fixing pin widening slit 325 is formed in an outer circumferential surface thereof, and a lower current fixing groove 322 is formed at an upper end thereof;
A fixing pin 324 fastened to the fixing pin widening slit 325 with an elastic force;
A fixing key 310 including a circular rod 312 having a fixing pin binding slit 313 formed on an upper outer circumferential surface thereof;
, ≪ / RTI >
The lower current 120, which is a lower member of the truss reinforcing bar 100, is inserted and fixed in the lower current fixing groove 322,
The circular bar 312 of the fixing key 310 is inserted into the circular bar through hole D1 formed in the deck plate D so that the fixing pin 324 is inserted into the fixing pin widening slit 325 and the fixing pin 324, When the fixing pin 310 is rotated 90 degrees, the binding state of the fixing pin binding slit 313 is released from the fixing pin 324, Wherein the deck plate (D) is demolded from the concrete (C) because the key (310) can be removed.
3. The method of claim 2,
A male thread 323 is further formed on the outer circumferential surface of the lower current holding groove 322,
Wherein the bottom plate (120) is fixed by fastening a nut (330) to the male thread (323) after the bottom plate (120) is inserted into the bottom fixing groove (322) .
3. The method according to claim 2 or 3,
A handle 311 formed with a jaw 315 is formed under the circular bar 312 and a spring washer 314 is fastened between the jaw 315 and the deck plate D so that the spring washer 314 Removes the clearance between the lower portion of the fixing pipe (320) and the upper surface of the tech plate (D).
5. The method of claim 4,
The plurality of the fixed keys 310 installed in a row are removed at a time,
A control band 400 in which a plurality of moving slits 410 are formed in a row,
The control band 400 is provided at the side of the handle 311 and at the center of the control band 400 with a link 420 hinged to the control band 400. When the control band 400 is pulled or pushed, the circular rod 312 moves the movable slit 410 And the fixed key (310) is rotated by 90 degrees by the link (420).
3. The method of claim 2,
After the fixed key 310 is separated,
And a hanger (H) formed with a slit (H1) having a shape similar to the fixing pin binding slit (313)
Wherein the fixing pin (324) is fastened together with the fixing pin widening slit (325) and the slit (H1) with elastic force.
A truss reinforcing bar 100 is provided with a deck plate D fixed by a fixture 300 and a deck plate D is detached after a concrete C is installed.
The lower surface of the concrete C and the upper surface of the deck plate D are separated from each other when the fixture 300 is detached to facilitate demoulding of the deck plate D,
The fixture (300)
A fixed key 310 'including a circular rod 312' having a fixed pin binding slit 313 'formed on a lower outer peripheral surface thereof;
A fixing pipe 320 'having a circular rod insertion hole 321' formed at an upper portion thereof and a fixing pin widening slit 325 'formed at an outer peripheral surface thereof;
A fixing pin 324 'which is fastened with an elastic force to the fixing pin widening slit 325';
, ≪ / RTI >
The circular rod 312 'of the fixed key 310` is inserted into the circular bar through-hole D1 formed in the deck plate D so that the fixing pin 324` is inserted into the fixing pin widening slit 325` ) And the fixing pin binding slit 313 'are urged together with an elastic force and when the fixing pipe 320' is rotated by 90 degrees, the fixing pin 324 ' The deck plate (D) is demolded from the concrete (C) because the fixing state is released and the fixing key (310 ') can be separated.

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