AU2015200378B2

AU2015200378B2 - Spacer for stripping deck plate, and stripping deck plate using thereof

Info

Publication number: AU2015200378B2
Application number: AU2015200378A
Authority: AU
Inventors: Hyun Ki Choi; Myung Hwan Kim; Yong Hoi Kim; Hyo Geun Shin
Original assignee: Duckshin Housing Co Ltd
Current assignee: Duckshin Housing Co Ltd
Priority date: 2014-02-26
Filing date: 2015-01-28
Publication date: 2016-05-12
Anticipated expiration: 2035-01-28
Also published as: AU2015200378A1; KR101444895B1; MY174652A

Abstract

SPACER FOR STRIPPING DECK PLATE, AND STRIPPING DECK PLATE USING THEREOF There is disclosed a spacer (700) for a stripping deck plate, which is disposed between a truss girder (500) and a sheathing board (600), the spacer including: spacer coupling parts (710) disposed to face each other on left and right sides thereof in such a manner as to be open to left and right sides and returned to their original shapes if an external force is applied thereto, the spacer coupling parts (710) having lower reinforcing bar accommodating grooves (711) formed on both sides thereof to accommodate the lower end portions of the left and right sides of the truss girder (500) thereinto; a body (720) coupled to the lower end portions of the spacer coupling parts (710) in such a manner as to be formed unitarily with the spacer coupling parts (710) and to allow the truss girder (500) to be spaced apart from the top surface of the sheathing board (600) by a given distance, the body (720) having an insertion slot (730) incised upward from the underside thereof toward the interior thereof, a seating space portion (740) formed by expanding the internal area of the body (720) corresponding to the top end portion of the insertion slot (730) so as to seat the fixing locker (750) thereinto; and a fixing locker (750) passed through the sheathing board (600), inserted into the insertion slot (730) and seated into the seating space portion (740) to prevent the separation and deviation from the seating space portion (740) through the rotation by a given angle. [Fig. 3] pN N ~NT> --------------- ----------- ------- --------------- [Fig. 5] -72 Qz" 75 75777f ~753 >~_/ _75 K>-754 T> 71 7AK5

Description

1 SPACER FOR STRIPPING DECK PLATE, AND STRIPPING DECK PLATE USING THEREOF FIELD [0001] The present invention relates to a spacer and a deck plate wherein a sheathing board serving as a base member is stripped rapidly and reused after concrete is cast and cured. BACKGROUND [0002] Generally, a deck plate, which is used as a substitute for a form in forming a slab of a building, is a material for a slab made by machining a metal plate such as a zinc-coated steel sheet to form a structure, without any separation after concrete is cast thereinto. [0003] If a slab structure is built with the deck plate, there is no need for the frame for constructing floor concrete, which reduces the time and cost required for temporary work, and further, construction is carried out by continuously locating and fixing unit products, which rapidly and easily finishing the work. Furthermore, the deck plate products produced by plants are used, thus satisfying a given quality, and accordingly, most of slab structures have been recently constructed using the deck plates. [0004] Among the currently used deck plates, a representative material widely used for the slab floor construction of a large-sized building is a truss-type deck plate. [0005] FIG. 1 is a perspective view showing a conventional truss-type deck plate. As shown in FIG. 1, the truss-type deck plate largely includes truss girders 1 and a base member 10 to which the truss girders 1 are fixed. Each truss girder 1 has lattice members 9 as truss-shaped metal wires arranged symmetrically with respect to each other and an upper reinforcing bar 6 and lower reinforcing bars 8 fixed to the lattice members 9 by means of welding. [0006] In this case, the base member 10 is used as a substitute for a form and made in a plant by machining a metal plate such as a zinc-coated steel sheet to form a structure, without any separation after concrete is cast thereinto. Recently, the base member 10 has been stripped and reused after the concrete is cast.

2 [0007] FIG.2 shows a conventional stripping deck plate (which is disclosed in Korean Patent No.10-1237325), and as shown, the conventional stripping deck plate is structured wherein spacers 30 are coupled between truss girders 10 and a sheathing board 20. In more detail, each truss girder 10 is configured wherein the inner sides of the top ends of lattice materials 12 are contacted and welding-coupled with both sides of an upper chord 11, while the lower ends of the lattice materials 12 being open, and the inner sides of lower chords 13 are contacted and welding-coupled with the outer sides of the bottom ends of the lattice materials 12. The sheathing board 20 has through holes 21 formed thereon, and each spacer 30 is insert-molded to couple two synthetic resin bodies 31 to both ends of a spacer head 32 formed of a steel material in a longitudinal direction thereof. In this case, each spacer body 31 has a female screw formed upward from the underside thereof in such a manner as to be coupled to a washer bolt 40 passed from bottom to top through the through hole 21 of the sheathing board 20, and the lower chords 13 of the truss girder 10 are located on top of a head piece 321 of the spacer head 32 and welding-coupled thereto. [0008] The conventional stripping deck plate is configured wherein the spacers 30 combined integrally with the truss girders 10 are coupled to the sheathing board 20 by means of the washer bolts 40, and so as to strip the sheathing board 20, accordingly, all of the washer bolts 40 should be unfastened after concrete is cast and cured. That is, a large amount of time is required to couple and separate (strip) the stripping deck plate, and particularly, in case of the stripping, auxiliary means like a stand is used under the slab (that is, a ceiling surface) to allow the washer bolts 40 to be unfastened one by one by a worker in an uncomfortable posture, thus extremely lowering a working efficiency and undesirably causing safety accidents. [0009] So as to improve insulation performance or sound absorption performance, further, an insulation material or a sound absorption material is attached to the underside of the deck plate, and in conventional construction methods, the insulation material or the sound absorption material is attached to the underside of the deck plate by means of an adhesive or a separate insert strap through work forces. Accordingly, a large amount of time is required for construction of the insulation material or the sound absorption material, and further, it is hard to maintain the quality level of the insulation material or the sound absorption material. [0010] There is a need for a spacer for a deck plate that is capable of stripping a sheathing board serving as a base member in rapid and safe manners.

3 [0011] There is also a need for a deck plate that is capable of enhancing a working efficiency and easily installing a sheathing material like a sound absorption material, an insulation material and so on thereon. OBJECT [0012] It is the object of the present invention to substantially overcome or ameliorate one or more of the disadvantages of the prior art, or at least provide a useful alternative. SUMMARY [0013] According to a first aspect of the present invention, there is provided a spacer for a stripping deck plate, which is disposed between a truss girder and a sheathing board, the spacer including: spacer coupling parts disposed to face each other on left and right sides thereof in such a manner as to be open to left and right sides and returned to their original shapes if an external force is applied thereto, the spacer coupling parts having lower reinforcing bar accommodating grooves formed on both sides thereof to accommodate the lower end portions of the left and right sides of the truss girder thereinto; a body coupled to the lower end portions of the spacer coupling parts in such a manner as to be formed unitarily with the spacer coupling parts and to allow the truss girder to be spaced apart from the top surface of the sheathing board by a given distance, the body having an insertion slot incised upward from the underside thereof toward the interior thereof; a seating space portion formed by expanding the internal area of the body corresponding to the top end portion of the insertion slot so as to seat the fixing locker thereinto; and a fixing locker passed through the sheathing board, inserted into the insertion slot and seated into the seating space portion to prevent the separation and deviation from the seating space portion through the rotation by a given angle. [0014] According to a second aspect of the present invention, there is provided a stripping deck plate including: a spacer disposed between a truss girder and a sheathing board and including: spacer coupling parts disposed to face each other on left and right sides thereof in such a manner as to be open to left and right sides and returned to their original shapes if an external force is applied thereto, the spacer coupling parts having lower reinforcing bar accommodating grooves formed on both sides thereof to accommodate the lower end portions of the left and right sides of the truss girder thereinto; a body coupled to the lower end portions of the spacer coupling parts in such a manner as to be formed unitarily with the spacer coupling parts and to allow the 4 truss girder to be spaced apart from the top surface of the sheathing board by a given distance, the body having an insertion slot incised upward from the underside thereof toward the interior thereof, a seating space portion formed by expanding the internal area of the body corresponding to the top end portion of the insertion slot so as to seat the fixing locker thereinto; and a fixing locker passed through the sheathing board, inserted into the insertion slot and seated into the seating space portion to prevent the separation and deviation from the seating space portion through the rotation by a given angle; the truss girder coupled to top of the spacer and having upper reinforcing bars, lattice materials adapted to be contacted and welding-coupled with both sides of the upper reinforcing bars on the inner sides of the top ends thereof in such a manner as to become open toward the lower ends thereof, and lower reinforcing bars adapted to be contacted and welding-coupled with the outer sides of the lower ends of the lattice materials, the lower reinforcing bars being coupled to the lower reinforcing bar accommodating grooves of the spacer coupling parts; and the sheathing board coupled to underside of the spacer and formed of a plate having a given area, the sheathing board having a plurality of coupling holes penetratedly formed thereon in a slot shape at given distances along the surface thereof, wherein the fixing locker is passed through each coupling hole formed on the sheathing board and inserted into the insertion slot of the body of the spacer. [0015] According to an embodiment of the present invention, preferably, the stripping deck plate further includes a sheathing material located between the spacer and the sheathing board. [0016] According to an embodiment of the present invention, the spacer for the deck plate and the deck plate using the spacer have the following technical advantages. [0017] Firstly, the sheathing board can be stripped in rapid and safe manners, and in more detail, so as to strip the sheathing board, if the fixing locker rotates to the other side (in a counterclockwise direction in the drawing) at the locking position (wherein the horizontal member is brought into contact with the first locking projection), the horizontal member is brought into contact with the second locking projection, which becomes the initial insertion position as well as the stripping position, so that in this state, if the fixing locker pulls down, that is, if the fixing locker rotates to pull down as a single operation, it is separated from the insertion slot, thus separating the sheathing board from the truss girder in rapid and safe manners.

5 [0018] Secondly, the sheathing material can be simply constructed, and in more detail, there is no need to construct a separate sheathing material on the underside of the sheathing board after the concrete has been cast and cured, so that it is enough to supply the integral type of the truss girder, the spacer, the sheathing material and the sheathing board and just install them on a construction site, without having any separate operation for installing the sheathing material on the construction site. [0019] Lastly, the amount of materials consumed can be reduced through the recycling of the sheathing board, and in more detail, the sheathing board stripped in the rapid and safe manners can be reused to minimize the amount of waste generated during the construction and to reduce the amount of materials consumed. BRIEF DESCRIPTION OF DRAWINGS [0020] Preferred embodiments of the invention will be described hereinafter, by way of examples only, with reference to the accompanying drawings, wherein: [0021] FIG. 1 is a perspective view showing a conventional truss-type deck plate. [0022] FIG.2 is an exploded perspective view showing a conventional stripping deck plate. [0023] FIG.3 is an exploded perspective view showing a stripping deck plate according to a first embodiment of the present invention. [0024] FIG.4 is a side view showing the stripping deck plate according to the first embodiment of the present invention. [0025] FIG.5 is a perspective view showing various examples of a spacer in the stripping deck plate according to the first embodiment of the present invention. [0026] FIGS.6a to 6c are perspective views showing the coupled structure between a body and a fixing locker wherein the 'T'-shaped fixing locker is employed and the body is incised on the top area thereof.

6 [0027] FIGS.7a to 7c are perspective views showing the coupled structure between a body and a fixing locker wherein the ' -'-shaped fixing locker is employed and the body is incised on the top area thereof. [0028] FIG.8 is an exploded perspective view showing a stripping deck plate according to a second embodiment of the present invention wherein a spacer is mounted by using a fixing bolt. [0029] FIG.9 is an exploded perspective view showing a stripping deck plate according to a third embodiment of the present invention wherein a sheathing material is additionally disposed. [0030] FIG. 10 is a side view showing the stripping deck plate according to the third embodiment of the present invention wherein the sheathing material is additionally disposed. [0031] FIG. 11 is an exploded perspective view showing a stripping deck plate according to a fourth embodiment of the present invention wherein the spacer is mounted by using the fixing bolt and the sheathing material is additionally disposed. DETAILED DESCRIPTION [0032] Hereinafter, an explanation on a spacer for a stripping deck plate and a stripping deck plate using the spacer according to the present invention will be in detail given with reference to the attached drawings. [0033] The present invention relates to a spacer 700 disposed between a truss girder 500 and a sheathing board 600. [0034] The spacer 700 is disposed on top of the sheathing board 600 with the configuration as will be described below. [0035] As shown in FIG.3 or 5, spacer coupling parts 710 are open to left and right sides and returned to their original shapes if an external force is applied thereto and have lower reinforcing bar accommodating grooves 711 formed on both sides thereof to accommodate lower reinforcing bars 530 disposed on the lower end portions of the left and right sides of the truss girder 500 thereinto.

7 [0036] The spacer coupling parts 710 are made by bending metal plates or bars. In some cases, the spacer coupling parts 710 may be made of synthetic resin like plastic. [0037] A body 720 serves to connect the lower end portions of the spacer coupling parts 710 to each other in such a manner as to be formed unitarily with the spacer coupling parts 710 and to allow the truss girder 500 to be spaced apart from the top surface of the sheathing board 600 by a given distance, while fastening the sheathing board 600 to the truss girder 500. [0038] As shown in FIGS.6a to 7c, an insertion slot 730 is incised upward from the underside of the body 720 toward the interior of the body 720, and a fixing locker 750 is inserted into the insertion slot 730. [0039] A seating space portion 740 is formed by horizontally expanding the internal area of the body 720 corresponding to the top end portion of the insertion slot 730 so as to seat the fixing locker 750 thereinto. Referring to FIGS.6a to 7c, it can be checked that the internal structure of the seating space portion 740 is formed by incising the top area of the body 720, which will be in detail explained after the structure of the fixing locker 750 is first described. [0040] The fixing locker 750 is passed through a coupling hole 610 formed on the sheathing board 600 and fully inserted into the insertion slot 730, and after that, if the fixing locker 750 rotates to a given angle, the top end portion of the fixing locker 750 is seated into the seating space portion 740 to prevent the separation and deviation from the seating space portion 740 and to couple the sheathing board 600 to the truss girder 500. [0041] As shown in FIGS.6a to 7c, the fixing locker 750 includes a vertical member 751, a horizontal member 752 and a support member 753. [0042] The vertical member 751 is elongated vertically. [0043] The horizontal member 752 is extended horizontally from top of the vertical member 751, and the length (size) of the horizontal member 752 corresponds to the length of the insertion slot 730. That is, the horizontal member 752 is extended so that it can be inserted into the insertion slot 730.

8 [0044] The horizontal member 752 serves to conduct a locking operation, and if the fixing locker 750 rotates to one side after inserted into the insertion slot 730, the horizontal member 752 is seated into the seating space portion 740 to prevent the separation and deviation of the fixing locker 750 from the seating space portion 740. [0045] The support member 753 of the fixing locker 750 is brought into contact with the underside of the sheathing board 600 if the fixing locker 750 is inserted into the insertion slot 730 until the horizontal member 752 reaches the top end portion of the insertion hole 730, and, further, it compressingly supports the underside of the sheathing board 600 to prevent the sheathing board 600 from stripping if the fixing locker 750 rotates to one side to allow the horizontal member 752 to reach a first locking projection 741. [0046] The support member 753 serves to compressingly support the underside of the sheathing board 600 as well as to rotate the fixing locker 750, as a handle. In some cases, of course, a separate handle (not shown) may be attached to the underside of the support member 753. [0047] As shown in FIGS.6a to 7c, further, the support member 753 of the fixing locker 750 is slidingly fitted to the vertical member 751. In this case, the support member 753 is fixedly fitted between two nuts 754 fastened to the screw threads formed on the outer peripheral surface of the vertical member 751 of the fixing locker 750, and the fixed position (height) of the support member 753 can be adjusted in accordance with the fastened positions of the two nuts 754. Accordingly, the fixing locker 750 can be adjustably located in accordance with the standards (thicknesses) of the spacer 700 and the sheathing board 600, which desirably makes the fixing locker 750 used commercially. [0048] The seating space portion 740 has the first locking projection 741 formed thereon in such a manner as to be brought into contact with the horizontal member 752 if the fixing locker 750 rotates to one side and reaches a given area in the state where the fixing locker 750 is inserted into the insertion slot 730 until the horizontal member 752 reaches the top end portion of the insertion slot 730, thus preventing the fixing locker 750 from rotating anymore. [0049] Further, the seating space portion 740 has a second locking projection 742 formed thereon in such a manner as to be brought into contact with the horizontal member 752 in the state where the fixing locker 750 is inserted into the insertion slot 730 until the horizontal 9 member 752 reaches the top end portion of the insertion slot 730, thus preventing the fixing locker 750 from rotating to the other side. [0050] That is, as shown in FIGS.6a to 6c, if the 'T'-shaped fixing locker 750 is applied, the seating space portion 740 is open only on one side of the top end portion of the insertion slot 730, and the other side thereof is closed by means of the second locking projection 742. Accordingly, the fixing locker 750 rotates to one side, but does not rotate to the other side. Further, if the fixing locker 750 rotates by 900 to one side (in the clockwise direction in the drawing), it does not rotate anymore by the first locking projection 741 brought into contact with the horizontal member 752. This position is a final locking position. So as to strip the sheathing board 600, if the fixing locker 750 rotates by 90' to the other side (in the counterclockwise direction in the drawing), the horizontal member 752 is brought into contact with the second locking projection 742, and this position is an initial insertion position as well as a stripping position. [0051] So as to strip the sheathing board 600, if the fixing locker 750 rotates by 90' to the other side (in the counterclockwise direction in the drawing) at the locking position (wherein the horizontal member 752 is brought into contact with the first locking projection 741), the horizontal member 752 is brought into contact with the second locking projection 742, and this position is the initial insertion position as well as the stripping position. In this state, if the fixing locker 750 pulls down, it is separated from the insertion slot 730. That is, if the fixing locker 750 rotates to pull down as a single operation, it is separated from the insertion slot 730, thus separating the sheathing board 600 from the truss girder 500 in rapid and safe manners. [0052] The bottom surface of the seating space portion 740 becomes high in inclination as the horizontal member 752 is close to the first locking projection 741 by the rotation of the fixing locker 750 to one side, thus gradually increasing the compressing force of the support member 753 against the sheathing board 600 as the horizontal member 752 is close to the first locking projection 741. [0053] Further, unlocking prevention protrusions 743 are formed on the bottom surface of the seating space portion 740 around the first locking projection 741 so as to prevent the fixing locker 750 from rotating to the other side unless an given external force is applied to the fixing locker 750 after the fixing locker 750 has rotated to one side to allow the horizontal member 752 10 to reach the first locking projection 741, so that the locking operation of the fixing locker 750 reaching the final locking position can be maintained in safe and firm manners. [0054] As shown in FIGS.7a to 7c, if the ' -'-shaped fixing locker 750 is applied, the seating space portion 740 is open only on one side of the top end portion of the insertion slot 730, and the other side thereof is closed by means of the second locking projection 742. Accordingly, the fixing locker 750 rotates to one side, but does not rotate to the other side. Further, if the fixing locker 750 rotates by 1800 to one side (in the clockwise direction in the drawing), it does not rotate anymore by the first locking projection 741 brought into contact with the horizontal member 752. This position is a final locking position. So as to strip the sheathing board 600, if the fixing locker 750 rotates by 1800 to the other side (in the counterclockwise direction in the drawing), the horizontal member 752 is brought into contact with the second locking projection 742, and this position is an initial insertion position as well as a stripping position. [0055] So as to strip the sheathing board 600, if the fixing locker 750 rotates by 180' to the other side (in the counterclockwise direction in the drawing) at the locking position (wherein the horizontal member 752 is brought into contact with the first locking projection 741), the horizontal member 752 is brought into contact with the second locking projection 742, and this position is the initial insertion position as well as the stripping position. In this state, if the fixing locker 750 pulls down, it is separated from the insertion slot 730. That is, if the fixing locker 750 rotates to pull down as a single operation, it is separated from the insertion slot 730, thus separating the sheathing board 600 from the truss girder 500 in rapid and safe manners, which is the same as FIGS.6a to 6c. [0056] The bottom surface of the seating space portion 740 becomes high in inclination as the horizontal member 752 is close to the first locking projection 741 by the rotation of the fixing locker 750 to one side, and further, the unlocking prevention protrusions 743 are formed on the bottom surface of the seating space portion 740 around the first locking projection 741, which are the same as FIGS.6a to 6c. [0057] The spacer 700 with the above-mentioned structure constitutes the deck plate together with the truss girder 500 and the sheathing board 600.

11 [0058] As shown in FIG.3, the truss girder 500 includes upper reinforcing bars 510, lattice materials 520 adapted to be contacted and welding-coupled with both sides of the upper reinforcing bars 510 on the inner sides of the top ends thereof in such a manner as to be open toward the lower ends thereof, and lower reinforcing bars 530 adapted to be contacted and welding-coupled with the outer sides of the lower ends of the lattice materials 520, which has the same structure as the conventional truss type deck plate or a similar structure thereto. Accordingly, a detailed explanation on the structure of the truss girder 500 will be avoided. [0059] The sheathing board 600 serves to stably support the whole load in the process where concrete is cast or cured and includes any one selected from boards having a given size (width, height and thickness) like a laminated board, a synthetic resin board, or a steel board. In this case, the sheathing board 600 may have a shape of a simple board or a shape of a board on which bent protruding portions are equally spaced apart from each other. As shown in FIG.3, the sheathing board 600 has the coupling holes 610 penetratedly formed thereon in a slot shape at given distances along the surface thereof. [0060] The coupling holes 610 may be arranged to correspond to each other or to cross each other. [0061] FIG.8 shows the case wherein the spacer 700 is mounted by using a fixing bolt 760, not by using the fixing locker 750, and in this case, the fixing bolt 760 is passed through the coupling hole 610 formed on the sheathing board 600 and screw-fastened to the underside of the body 720 of the spacer 700. Like this, if the fixing bolt 760 is used, there is no need to form the coupling hole 610 in the slot shape, and there is no need to form any insertion slot 730 and any seating space portion 740. That is, it is enough just to locate a female screw to which the fixing bolt 760 is fastened on the underside of the body 720 of the spacer 700. The components of the deck plate according to the second embodiment of the present invention are the same as those according to the first embodiment of the present invention, except the fixing bolt 760 screw fastened to the body 720 of the spacer 700, and therefore, a detailed explanation on them will be avoided for the brevity of the description. [0062] The deck plate according to the present invention further includes a sheathing material 800, which is shown in FIGS.9 to 11.

12 [0063] The sheathing material 800 serves to prevent heat loss from being generated from the surface of the cured concrete or to provide a noise-shielding function and includes any one selected from materials having insulation or sound-absorption function like foamed resin, urethane foam and so on. [0064] The sheathing material 800 is located on top of the sheathing board 600, and as shown in FIG.9, the sheathing material 800 has a plurality of through holes 810 formed in a slot shape thereon at the corresponding positions to the coupling holes 610 formed on the sheathing board 600. [0065] The sheathing material 800 serves as an insulation material or a sound absorption material and has the same size (width and height) as the sheathing board 600, while having the thickness determined upon thermal transmittance conditions or noise references of a building. [0066] FIG. 11 shows the deck plate wherein the spacer 700 is mounted by using the fixing bolt 760 and the sheathing material 800 is additionally disposed. When compared with the deck plate as shown in FIG.8, the deck plate as shown in FIG. 11 further includes the sheathing material 800. [0067] While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention.

Claims

1. A spacer for a stripping deck plate, which is disposed between a truss girder and a sheathing board, the spacer comprising: spacer coupling parts disposed to face each other on left and right sides thereof in such a manner as to be open to left and right sides and returned to their original shapes if an external force is applied thereto, the spacer coupling parts having lower reinforcing bar accommodating grooves formed on both sides thereof to accommodate the lower end portions of the left and right sides of the truss girder thereinto; a body coupled to the lower end portions of the spacer coupling parts in such a manner as to be formed unitarily with the spacer coupling parts and to allow the truss girder to be spaced apart from the top surface of the sheathing board by a given distance, the body having an insertion slot incised upward from the underside thereof toward the interior thereof; a seating space portion formed by expanding the internal area of the body corresponding to the top end portion of the insertion slot so as to seat the fixing locker thereinto; and a fixing locker passed through the sheathing board, inserted into the insertion slot and seated into the seating space portion to prevent the separation and deviation from the seating space portion through the rotation by a given angle.

2. The spacer for a stripping deck plate according to claim 1, wherein the fixing locker comprises a vertical member elongated vertically and a horizontal member extended horizontally from top of the vertical member to the size corresponding to the length of the insertion slot, and the seating space portion has a first locking projection formed thereon in such a manner as to be brought into contact with the horizontal member if the fixing locker rotates to one side and reaches a given area in the state where the fixing locker is inserted into the insertion slot until the horizontal member reaches the top end portion of the insertion slot, thus preventing the fixing locker from rotating anymore.

3. The spacer for a stripping deck plate according to claim 2, wherein the seating space portion has a second locking projection formed thereon in such a manner as to be brought into contact with the horizontal member in the state where the fixing locker is inserted into the insertion slot until the horizontal member reaches the top end portion of the insertion slot, thus preventing the fixing locker from rotating to the other side. 14

4. The spacer for a stripping deck plate according to claim 2, wherein the fixing locker further comprises a support member adapted to be brought into contact with the underside of the sheathing board if the fixing locker is inserted into the insertion slot until the horizontal member reaches the top end portion of the insertion hole and adapted to compressingly support the underside of the sheathing board to prevent the sheathing board from stripping if the fixing locker rotates to one side to allow the horizontal member to reach the first locking projection.

5. The spacer for a stripping deck plate according to claim 4, wherein the support member of the fixing locker is adapted to be slidingly fitted to the vertical member in such a manner as to be fixedly fitted between two nuts fastened to the screw threads formed on the outer peripheral surface of the vertical member of the fixing locker, so that the fixed position (height) of the support member is adjusted in accordance with the fastened positions of the two nuts.

6. The spacer for a stripping deck plate according to claim 4, wherein the bottom surface of the seating space portion becomes high in inclination as the horizontal member is close to the first locking projection by the rotation of the fixing locker to one side, thus gradually increasing the compressing force of the support member against the sheathing board as the horizontal member is close to the first locking projection.

7. The spacer for a stripping deck plate according to claim 4, wherein the seating space portion further comprises unlocking prevention protrusions formed on the bottom surface thereof around the first locking projection so as to prevent the fixing locker from rotating to the other side unless an given external force is applied to the fixing locker after the fixing locker has rotated to one side to allow the horizontal member to reach the first locking projection.

8. A stripping deck plate comprising: a spacer disposed between a truss girder and a sheathing board and comprising: spacer coupling parts disposed to face each other on left and right sides thereof in such a manner as to be open to left and right sides and returned to their original shapes if an external force is applied thereto, the spacer coupling parts having lower reinforcing bar accommodating grooves formed on both sides thereof to accommodate the lower end portions of the left and right sides of the truss girder thereinto; a body coupled to the lower end portions of the spacer coupling parts in such a manner as to be formed unitarily with the spacer coupling parts and to allow the truss girder to be spaced apart from the top surface of the sheathing board by a given distance, the 15 body having an insertion slot incised upward from the underside thereof toward the interior thereof, a seating space portion formed by expanding the internal area of the body corresponding to the top end portion of the insertion slot so as to seat the fixing locker thereinto; and a fixing locker passed through the sheathing board, inserted into the insertion slot and seated into the seating space portion to prevent the separation and deviation from the seating space portion through the rotation by a given angle; the truss girder coupled to top of the spacer and having upper reinforcing bars, lattice materials adapted to be contacted and welding-coupled with both sides of the upper reinforcing bars on the inner sides of the top ends thereof in such a manner as to become open toward the lower ends thereof, and lower reinforcing bars adapted to be contacted and welding-coupled with the outer sides of the lower ends of the lattice materials, the lower reinforcing bars being coupled to the lower reinforcing bar accommodating grooves of the spacer coupling parts; and the sheathing board coupled to underside of the spacer and formed of a plate having a given area, the sheathing board having a plurality of coupling holes penetratedly formed thereon in a slot shape at given distances along the surface thereof, wherein the fixing locker is passed through each coupling hole formed on the sheathing board and inserted into the insertion slot of the body of the spacer.

9. The stripping deck plate according to claim 8, further comprising a sheathing material located between the spacer and the sheathing board and having a plurality of through holes formed thereon in a slot shape at the corresponding positions to the coupling holes formed on the sheathing board, so that the fixing locker is passed through each coupling hole formed on the sheathing board and through the plurality of through holes of the sheathing material and inserted into the insertion slot of the body of the spacer. Duckshin Housing Co., Ltd Patent Attorneys for the Applicant/Nominated Person SPRUSON & FERGUSON