KR20080099100A - Deck plate structure - Google Patents

Abstract

A lining board structure is provided to reduce the self-weight and to make assembling and disassembling with the mold girder easy. A lining board(100) structure comprises a plurality of lining boards which is made of the concrete stuff and is settled in the upper of the mold girder and in which the pipe member(110) having a through-hole in the corner part is installed, a connection plate(310) combined in the lower surface of the lining board, in which the connection hole is formed in the location corresponding to the through-hole, a mold girder(200) which is prepared in the lower part of the lining boards and of which the combining aperture is formed in the upper flange, a fastening bolt(410) which is combined in order to be penetrated into the connection hole(312) of the splice plates and combining aperture(205) of the mold girder, an engaging nut(420) connected with the end part of the fastening bolt in the lower part of the upper flange of the mold girder.

Description

Double plate structure {DECK PLATE STRUCTURE}

1 is a perspective view showing an example of a conventional perforated plate structure.

Figure 2 is a perspective view showing another example of a conventional perforated plate structure.

Figure 3 is a perspective view showing an example of the coupling method of the existing perforated plate and the mold beam.

Figure 4 is a block diagram showing a first embodiment of a perforated plate structure according to the present invention.

5a and 5b are perspective views showing embodiments of the perforated plate of the present invention.

Figure 6 is a configuration diagram showing a state in which the friction plate is installed to prevent the flow in the first embodiment of the present invention.

Figure 7a is a view showing a state in which the uneven portion is formed in the connection plate and the friction plate of the present invention.

FIG. 7B is a side view of FIG. 7A; FIG.

Figure 8a is a block diagram showing an embodiment of the flow preventing means of the present invention.

Figure 8b is a view showing a modification to another embodiment of the flow preventing means of the present invention shown in Figure 8a.

Figure 9a is a block diagram showing another embodiment of the flow preventing means of the present invention.

9B is a side view of FIG. 9A;

9C is a configuration diagram showing a modification of the embodiment shown in FIGS. 9A and 9B.

Figure 10a is a block diagram showing another embodiment of the present invention flow prevention means.

10B is a side view of FIG. 10A;

10C is a configuration diagram showing a modification of the embodiment shown in FIGS. 10A and 10B.

Figure 11a, 11b is another example of the flow prevention means of the present invention, Figure 11c is a flow prevention means using an interference structure of the uneven shape, Figure 11d is a flow prevention means using a steel wire and a fixing structure The figure shown.

12 is a perspective view showing a second embodiment of the perforated plate structure according to the present invention.

Fig. 13 is a sectional view showing a double plate of the second embodiment of the present invention.

14 is a cross-sectional view showing still another example of the inventive perforated plate.

15 is a view showing a state in which a pipe for weight reduction is embedded in the perforated plate of the present invention.

16 is a state diagram used in the second embodiment of the present invention.

17A and 17B illustrate a third embodiment of the perforated plate structure according to the present invention, which is a cross-sectional view and a plan view showing that a shear key and a key groove are formed on the side surface of the perforated plate.

18 is a state diagram used in the third embodiment of the present invention.

19 is a perspective view showing the structure of the perforated plate according to the fourth embodiment of the present invention.

20 is an exploded view showing a structure of a porous plate according to a fifth embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: cavity plate 105: groove

110: pipe member 150: hollow pipe

200: template beam 205: bonding hole

310: connecting plate 312: connecting hole

320: friction plate 322: fastening hole

330: protrusion 340: stopper block

342: fitting hole 350: fixing part

350a: step 360: engaging part

360a: jaw 370: receiving portion

370a: receiving groove 380: fitting portion

380a: fitting protrusion 410: fastening bolt

420: tightening nut 510: fitting hole

610: shear key 620: key groove

710: fixed plate

The present invention relates to a perforated plate structure, and in particular to a self-loading structure that is made of a concrete material and relates to a perforated plate structure is improved its structure so that easy disassembly and assembly with the mold beam by a simple screw fastening method.

In general, the perforated plates temporarily constructed for the maintenance of roads in construction sites, such as subway construction sites, are mostly made of steel, and many supporting members made of steel and upper plate members are placed on the upper part to form temporary roads. It is configured to do so.

In addition, these perforated plates have a strength sufficient to support each member's load, and the surface is formed with an uneven surface to increase frictional force.

However, most of the steel plates such as steel plates are vulnerable to salinity, calcium chloride and acidic substances, and are easily vulnerable to corrosion.

In addition, when the durability is short and snow is piled up in the winter, it is difficult to use a snow removal material such as calcium chloride has caused problems in safety management.

In particular, the steel perforated plate composed only of the existing steel is not only excessively expensive to manufacture, it is difficult to check the problem that the noise and vibration caused severely due to the vehicle passing frequently and the degree of aging and corrosion on the floor of the perforated plate is difficult to replace There was a difficult problem.

In order to overcome this existing problem, there is proposed an integrated composite perforated plate having a structure in which a concrete material is integrated. As shown in Figure 1, the configuration is arranged between the pattern H-shaped steel 21 and the patterned H-shaped steel 21, which are arranged side by side in the longitudinal direction at a plurality of regular intervals, respectively, and are joined by welding at the same time One side is welded to the upper and lower flanges of the c-shaped steel 22 and the patterned H-shaped steel 21, and the side reinforcement steel plate 25 welded to the other side of the c-shaped steel 22, and a plurality of H-shaped steel 21 The lower reinforcing steel plate 27 is welded over the lower flanges of the, and the lower surface of the reinforcing steel plate 27 is composed of L-shaped steel 26 is welded.

In addition, the c-shaped steel is welded to the shear connector 29 in the longitudinal direction, and concrete of a certain strength or more is poured on the shear connector 29.

As another example of the prior art, disclosed in the Korean Utility Model Registration No. 0351464 "recovery plate" and as shown in Figure 2, the configuration is a support member 12 consisting of a plurality of reinforcing bars 13, 13 ' ) And a top plate structure 14 which forms a concrete layer by both side plates 15 at these upper sides.

The prior art described above employs a method in which the concrete material and the steel are integrally formed by concrete pouring, and the steel is integrally molded while having a function of formwork.

These conventional prior art has a flow preventing means for preventing the widthwise flow of the perforated plates arranged in the width direction after coupling with the mold beam, the structure is shown in Figure 3, 10 is provided with a fixture 11, which is integrally coupled to the bottom surface of the steel plate and bent to correspond to the upper flange end of the mold beam 30. This is because, after the hollow plate in which steel and concrete are mixed is seated on the upper side of the mold beam, the fastener is brought into contact with the upper flange of the mold beam, and then some of the contact portions of the fastener and the mold beam of the hollow beam are selectively It has an assembly process to integrate by welding.

However, the existing prior art has a problem that it is difficult to dismantle and dismantle for recycling to another place after dismantling the coupling with the mold beam, it is difficult to recycle if the welding site is broken after dismantling.

On the other hand, when the perforated plate is composed only of a concrete material without steel, as well as its own weight is heavy, there was a problem that the coupling with the mold beam is not easy.

The present invention has been proposed to solve the above problems in consideration of the above problems, the purpose of which can be configured to be a perforated plate mainly on the concrete material, and to reduce the weight burden, and easy to disassemble and assemble with the mold beam It is to provide a double-plate structure with improved bonding structure.

In the present invention for achieving the above object is a plurality of perforated plate seated on the upper portion of the mold beam in the perforated plate structure is integrally coupled,

The perforated plate is made of concrete,

A pipe member having a through hole is vertically installed to vertically communicate with the edge portion of the perforated plate,

The connecting plate having a connection hole corresponding to the through hole of the pipe member is integrally combined with the lower surface of the vent hole plate,

A plurality of coupling holes are formed on the upper surface of the mold beam,

A fastening bolt coupled to the coupling hole and a connection hole and a through hole and a fastening nut fastened to the fastening bolt,

The mold beam and the perforated plate is characterized in that it is integrally coupled by screwing.

The perforated plate of the present invention is formed with a recess formed in the center lower portion.

In addition, the perforated plate is one or more hollow pipes are embedded to have a hollow therein in the longitudinal direction.

In addition, it is preferably further provided with a friction plate interposed between the connecting plate and the mold beam.

The convex and convex portions having peaks and valleys corresponding to each other are formed on the surfaces of the connecting plate and the friction plate, respectively.

In addition, the present invention is preferably a shear key protruding from one side of the edge of the perforated plate, the key groove portion corresponding to the shear key is formed on the other side of the edge of the perforated plate.

The present invention is integrally formed with a protrusion so as to project on the upper surface of the mold beam,

It is provided with a stopper block provided in the lower portion of the connecting plate and the fitting hole is formed to accommodate the protrusion.

It is preferable to further include fitting holes interposed in the transverse gaps between the perforated plates.

On the other hand, as another characteristic element of the present invention, a plurality of perforated plate is seated on the upper part of the mold beam is combined integrally,

The perforated plate is made of concrete,

A plurality of coupling holes are formed in the flange of the mold beam,

The fastening nut is integrally installed to be embedded in the lower surface of the perforated plate,

The fastening bolt is fastened to the fastening nut of the perforated plate through the coupling hole, and the mold beam and the perforated plate are integrally coupled by screwing.

In addition, it is preferable to further include a connection plate which is provided on the lower surface of the perforated plate and integrally installed at a portion corresponding to the contact portion with the mold beam.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The first embodiment of the porous plate structure according to the present invention, when described with reference to Figures 4 and 6 and 7, the configuration is made of a concrete material and seated on the upper side of the mold beam 200 and the hole in the corner portion The pipe member 110 having a plurality of buried plate 100 is installed so as to communicate with each other, and the pipe member 110 is integrally coupled to the lower surface of the buried plate 100 is embedded and the position corresponding to the through hole A connection plate 310 having a connection hole 312 formed therein, a mold beam 200 provided at a lower portion of the perforated plates 100, and a coupling hole 205 formed at an upper flange thereof, and the pipe member 110. A fastening bolt 410 coupled to penetrate the connection hole 312 of the connection plate 310 and the coupling hole 205 of the mold beam 200 through a through hole, and a lower portion of the upper flange of the mold beam 200. It consists of a fastening nut 420 is fastened to the end of the fastening bolt 410.

In more detail, the perforated plate 100 is formed so that the lower edge portion is stepped so that the surface contact with the upper flange of the mold beam 200 even when the connection plate 310 is coupled.

The mold beam 200 preferably employs a well-known H beam, but may also employ a " c " shaped channel.

The connecting plate 310 may be made of steel, and can be integrally formed by reinforcing bars (R) and welding, etc., when reinforcing bars (R) when reinforcing concrete to form the perforated plate 100, In this case, as shown in FIG. 5A, only the respective corner portions of the perforated plates 100 are represented, but the same length as the width of the perforated plate 100 so that both edges correspond to one connection plate 310 as shown in FIG. 5B. You might have

The perforated plate 100 is formed with a recess 105 formed to be recessed in the center lower surface so as to reduce its own load.

The groove 105 is not limited to the central lower surface of the perforated plate 100, but may also be formed on the upper surface.

In addition, as another structure for reducing the self-load of the porous plate 100, one or more hollow pipes 150 having a hollow in a long longitudinal direction are provided therein because the horizontal and vertical widths of the porous plate 100 are different.

In addition, a friction plate 320 may be further provided between the upper surface of the mold beam 200 and the connection plate 310 to suppress lateral flow by the friction force, and the friction plate 320 may have the mold beam 200. The upper surface of the) may be integrated by welding, or may be integrally coupled by a separate fastening member (bolt, nut).

The friction plate 320 has a fastening hole 322 corresponding to the coupling hole 205 of the mold beam 200 so that the fastening bolt 410 penetrates.

More preferably, the contact surface of the friction plate 320 and the connecting plate 310 is preferably formed with a tooth-shaped uneven portion 315 having a hill and a valley corresponding to each other to prevent flow.

In addition, as another structure for preventing the flow of the perforated plate 100, referring to Figure 8a, protruding portion having a through hole 332 protrudes on the upper side of the mold beam 200 and the fastening bolt 410 is penetrated. 330 is formed, and a stopper block 340 having a fitting hole 342 is formed so as to be integrally welded to the lower surface of the connecting plate 310 and the projection 330 is accommodated. have.

As shown in FIG. 8B, the portion where the protrusion 330 and the fitting hole 342 contact each other may be tapered to have an inclined surface, so that the protrusion 330 may easily enter the fitting hole 342.

9A and 9B, the fixing part 350 is integrally formed to protrude on the upper side of the mold beam 200 and the stepped portion 350a is formed at one end portion thereof, and the perforated plate 100 is formed. And a locking portion 360 that is integrally coupled to the lower edge of the edge) and has a locking jaw 360a that interferes with the step 350a of the fixing portion 350 and restricts lateral movement. It is provided with a fastening bolt 410 and a fastening nut 420 is fastened through the locking portion 360.

In addition, Figure 9c is a view showing a modified example of the step and the locking step, the contact portion of the step (350a) and the locking step (360a) of the fixing part 350 is formed to be tapered to have an inclined surface and the stepped (350a) and The engaging jaw (360a) is to facilitate the coupling.

Another embodiment of the present invention flow prevention means, as shown in Figure 10a and 10b, the receiving groove 370a integrally formed to protrude on the upper side of the mold beam 200 and recessed in the form of a groove in the center portion ) Is formed integrally coupled to the lower portion of the receiving portion 370, the perforated plate 100, and the fitting protrusion 380a protrudes from the center lower portion so that a portion is accommodated in the receiving groove 370a of the receiving portion 370. The fitting portion 380 is formed, and the receiving portion 370 and the fastening bolt 410 and the fastening nut 420 fastened through the fitting portion.

The flow preventing means is the stepped shape interfering with each other in the contact portion of the mold beam 200 and the porous plate 100 to prevent the flow of the porous plate 100, or by fitting of the uneven form of the porous plate 100 It is intended to prevent flow.

In addition, another example for preventing the flow of the perforated plate 100 is, as shown in Figure 11a, the upper gap between each of the perforated plate 100 to suppress the lateral flow of the perforated plate 100 seated on the mold beam 200 Fittings 510 may be installed in the housing. At this time, the fitting hole 510 may adopt a filler such as rubber.

In addition, as another example of the fitting hole, as shown in Figure 11b, the stud plate (integrated by welding to the upper side of the mold beam 200 to be interposed in the lower gap 525 between each of the plurality of perforated plate 100 (interposed) 520 may be provided.

And, as another example for preventing the flow of the perforated plate 100, as shown in Figure 11c, the connecting plate 310 is integrally coupled to the entire lower surface of the perforated plate 100 without using the fitting hole, Protruding jaw 540 is integrally formed at the lower portion of the connecting plate 310, that is, the lower edge portion to which the pipe member 110 is coupled, and interferes with the protruding jaw 540 on the upper side of the mold beam 200. The fixing jaw 545 protrudes upward.

When the adjacent perforated plates 100 are connected to each other, a space portion opened downward between the protrusion jaws 540 is formed, and the fixing jaw 545 is accommodated in the space portions.

In addition, as shown in FIG. 11D, the pipe pipe 155 having a hollow in the width direction of each of the plurality of perforated plates 100 seated on the mold beam 200 is integrally installed therein without using the fitting holes, and the pipe After the steel wire 530 is passed through the hollow of the pipe 155 and tensioned, the two ends of the steel wire 530 may be fixed using a known fixing tool 536 and a fixing block 535.

Referring to the operation of the present invention the structure of the porous plate according to the structure as follows.

The perforated plate structure according to the present invention, the coupling of the through hole of the pipe member 110 and the connection hole 312 and the mold beam 200 of the pipe member 110 formed perpendicular to each corner portion of the plurality of perforated plate 100 After seating the perforated plates 100 on the upper flanges of the mold beams 200 on both sides spaced apart from each other so as to match the balls 205, the operator drills the fastening bolts 410 on the upper side of the pipe member 110. Inserted through the through hole 312 and the coupling hole 205 through the bottom of the upper flange of the mold beam 200 to fasten the end of the fastening bolt 410 through the fastening nut 420 As a result, the perforated plate 100 and the mold beam 200 can be integrated by a screw fastening method.

In addition, when the friction plate 320 is integrated with the upper surface of the mold beam 200, the fastening bolt 410 has a structure that is fastened through the fastening hole 322 of the friction plate 320. .

In the process of coupling the perforated plate 100 and the mold beams 200, each of the perforated plates 100 uses fastening bolts 410 and fastening nuts 420 on the upper flanges of the mold beams 200 with both ends spaced apart from each other. Since it is integrated by a screw type fastening method, it has an integrated composite structure effect can increase the durability to the secondary cross-sectional moment.

On the other hand, each of the through-hole plate 100 is interposed in the process of being arranged in close contact with each other on the mold beams 200 to interpose the gaps between the respective openings (510) described above to prevent the flow between each other or By passing through the steel wire 530 and tensioning the steel wire 530 so as not to generate a gap, the flow of the steel wire 530 may be prevented by fixing the steel wire 530 on both sides.

After the assembly is completed, the process of disassembling for recycling after use as a temporary construction for traffic bypass structure, each of the perforated plate 100 after releasing the coupling state of the fastening bolt 410 and the fastening nut 420 Departing from the 200 is a simple disassembly operation.

In addition, the perforated plate 100 of the present invention can reduce the load by using the groove portion 105 and the hollow pipe 150, the uneven portion formed in the contact portion of the friction plate 320 and the connection plate 310 It is also possible to suppress the flow by 315.

12 to 16 show the second embodiment of the structure of the perforated plate according to the present invention. The same components as those of the above-described embodiment will be denoted by the same reference numerals and redundant description thereof will be omitted.

The structure is provided to be spaced apart from each other on both sides and the mold beam 200 is formed in the upper flange spaced apart from each other, and seated on the upper surface of the mold beam 200 on both sides and correspond to the coupling hole 205 Penetration plate 100 of the concrete material in which the fastening nut 420 is integrally embedded in the lower surface portion of the position to be penetrated through the coupling hole 205 and the fastening nut 420 of the reinforcing plate 100 of the mold beam 200 It is roughly divided into fastening bolts 410 to be fastened.

The lower surface of the perforated plate 100 is integrally embedded with a fastening nut 420 at each corner portion, the fastening nut 420 is a perforated plate 100 so that the fastening bolt 410 penetrates through the thread of the fastening nut 420. Buried so as to be apparently exposed on the lower surface.

In addition, in the above embodiment, as in the previous embodiment, the recess 105 may be formed to reduce the load, or the load may be reduced by the space portion where the hollow is located through the hollow pipe 150. have.

In addition, the connection plate 310 and the friction plate 320 may be further provided in the same manner as in the above-described embodiment.

17 and 18 are views showing a third embodiment of the present invention, which is applicable to the above-described first and second embodiments of the porous plate 100, and includes a shear key 610 at one side of the side edges of the porous plate 100. ) Is formed to protrude, and the key groove portion 420 formed in the other side corresponding to the side edge formed with the shear key 610 is formed to close the adjacent perforated plates 100 during the arrangement operation of each of the perforated plates 100 By interfitting, it has a function of suppressing flow generation.

19 is a view showing a fourth embodiment of the present invention, which is the same as the components of the above-described embodiment, but is in contact with the side edges of the other perforated plates 100 transversely arranged among the side edges of the double plate 100. The fixed plate 710 is made of steel is integrally coupled to the side edge.

The fixing plate 710 is integrated with the end of the reinforcing bars (R) to be reinforced during the concrete pouring work of the perforated plate 100 is integrated on both sides of the perforated plate 100, the fixed plate 710 is the perforated plate 100 In the process of being in contact with each other in the state in which they are seated on the mold beams, the two different perforated plates 100 are in close contact with each other and firmly adhered to each other to prevent lateral flow, and also to the occurrence of bending due to the load generated during the vehicle driving. Resistance can be obtained.

On the other hand, Figure 20 shows a fifth embodiment according to the present invention, one end of the stud bolt-shaped fixing bolt 430 is a concept opposite to the second embodiment of the present invention described above on the lower surface of the perforated plate 100 It is integrally installed to be embedded, and the other end of the fixing bolt 430 penetrates the coupling hole 205 formed in the upper flange of the mold beam 200 to be fastened with the fixing nut 440 to form the perforated plate 100 and the mold. The beam 200 is integrated into the structure.

In addition, one end of the fixing bolt 430 is fixed by the connection plate 310 coupled to the lower surface of the perforated plate 100.

In addition, the present invention, in addition to the embodiments described above, bar structure 100 and the mold beam 200 has a technical idea that the structure is improved so that it can be integrally coupled by a screw fastening method, the present Many modifications will be made without departing from the spirit and scope of the invention.

As described above, the present invention relates to a structure of a perforated plate whose structure is improved to facilitate the disassembly and assembly of a mold beam while reducing its own weight so that the structure of the perforated plate may be made of concrete material. It is possible to construct a perforated plate using a relatively inexpensive concrete material, to reduce its own weight by using a recess and a hollow pipe, and to prevent the perforated plate by using a flow prevention means such as friction plates or fittings. It has a useful effect that can restrain the occurrence of flow in the assembled state seated on the mold beam.

In addition, it is possible to assemble the perforated plate and the mold beam integrally by adopting a simple bolt fastening method has the advantage that the assembly and productivity is improved.

Claims (15)

In the multi-hole plate structure that is seated on the upper portion of the mold beam 200 is coupled to the integral, The perforated plate 100 is made of concrete, Pipe member 110 having a through-hole so as to communicate vertically, vertically to the corner portion of the perforated plate 100 is integrally installed, The connection plate 310 having a connection hole 312 corresponding to the through hole of the pipe member 110 is integrally combined with the lower surface of the vent plate 100, A plurality of coupling holes 205 of the upper surface �� of the mold beam 200 is formed, A coupling bolt 410 coupled to the coupling hole 205 and a connection hole 312 and a through hole and a coupling nut 420 coupled to the coupling bolt 410 are provided. The mold beams 200 and the perforated plate 100 is a perforated plate structure, characterized in that integrally coupled by screwing. The method according to claim 1, The perforated plate 100 is a perforated plate structure, characterized in that the groove portion 105 is formed to be recessed in the lower center. The method according to claim 1, The perforated plate 100 is a perforated plate structure, characterized in that one or more hollow pipes 150 is embedded to have a hollow therein in the longitudinal direction. The method according to any one of claims 1 to 3, The perforated plate structure, characterized in that it further comprises a friction plate 320 interposed between the connecting plate 310 and the mold beam 200. The method according to claim 4, Perforated plate structure, characterized in that the concave-convex portion 315 having a peak and a valley corresponding to each other is formed on the surface of the connecting plate 310 and the friction plate 320, respectively. The method according to claim 1, The protrusion 330 is integrally formed to protrude on the upper surface of the mold beam 200, The perforated plate structure, characterized in that provided with a stopper block 340 is provided in the lower portion of the connecting plate 310 and the fitting hole 342 is formed so that the protrusion 330 is accommodated. The method according to claim 1, A fixed part 350 formed integrally with the upper side of the mold beam 200 and having a stepped portion 350a formed at one end thereof; It is provided with a locking portion 360 is integrally coupled to the lower edge of the perforated plate 100 and the locking step 360a is formed to interfere with the step (350a) of the fixing portion 350 to limit the horizontal movement. A perforated plate structure. The method according to claim 1, An accommodation part 370 formed integrally with the upper side of the mold beam 200 and having an accommodation groove 370a recessed in a groove shape at a central portion thereof; The fitting portion 380 is integrally coupled to the lower rim of the perforated plate 100 and provided with a fitting protrusion 380a protruding from the lower side of the center to accommodate a portion of the receiving groove 370a of the receiving portion 370. A perforated plate structure, characterized in that. The method according to claim 1, The connection plate 310 which is in surface contact with the lower side of the porous plate 100 is integrally coupled, Protruding jaw 540 is formed integrally with the lower side at a position close to the side end of the connecting plate 310, The perforated plate structure, characterized in that the fixing jaw 545 protruding to interfere with the protruding jaw 540 on the upper side of the mold beam 200. The method according to claim 4, Perforated plate structure, characterized in that it further provided with a fitting hole 510 interposed in the horizontal gap between the perforated plate 100. The method according to any one of claims 1 to 3, Shear key 610 protruding from one side of the edge of the perforated plate 100 is formed, The perforated plate structure, characterized in that the key groove portion 420 corresponding to the shear key 610 is formed on the other side of the edge of the perforated plate 100. The method according to any one of claims 1 to 3, Perforated plate structure, characterized in that it further comprises a fixing plate (710) integrally coupled to one or more sides of the side edge of the perforated plate (100). In the multi-hole plate structure that is seated on the upper portion of the mold beam 200 is coupled to the integral, The perforated plate 100 is made of concrete, A plurality of coupling holes 205 are formed in the flange of the mold beam 200, A fixing bolt 430 having one end embedded in a lower surface of the perforated plate 100 and the other end coupled to penetrate the coupling hole 205; With a fixing nut 440 is fastened to the fixing bolt 430 through the coupling hole 205, The mold beams 200 and the perforated plate 100 is a perforated plate structure, characterized in that integrally coupled by screwing. In the multi-hole plate structure that is seated on the upper portion of the mold beam 200 is coupled to the integral, The perforated plate 100 is made of concrete, A plurality of coupling holes 205 are formed in the flange of the mold beam 200, The fastening nut 420 is integrally installed so as to be embedded in the lower surface of the cavity plate 100, The fastening bolt 410 is fastened to the fastening nut 420 of the through-hole plate 100 through the coupling hole 205, The mold beams 200 and the perforated plate 100 is a perforated plate structure, characterized in that integrally coupled by screwing. The method according to claim 14, The perforated plate structure, characterized in that it further provided with a connecting plate 310 provided on the lower surface of the perforated plate 100 and integrally installed in a portion corresponding to the contact portion with the mold beam (200).

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