Deep deck having reinforcing bar assembly and Construction method

Abstract

The present invention relates to a deep deck having a reinforcing bar assembly and a method of constructing the same. The upper reinforcing bar is welded and fixed to a bent support portion that is bent to both sides from a central protruding support portion of a shear reinforcing bar to form an integrated reinforcing bar assembly. The central protruding support portion and the bent support portions on both sides formed on the shear reinforcing bar of the reinforcing bar assembly are combined in a shape-matched manner with the upper surface of the deep deck coupled to the beam. The invention provides a deep deck having a reinforcing bar assembly and a method of constructing the same.

Description

Technology Field

[0001] The present invention relates to a deep deck having a reinforcing bar assembly and a method of constructing the same, and more specifically, to a deep deck having a reinforcing bar assembly and a method of constructing the same in which shear reinforcing bars and upper reinforcing bars are integrally pre-formed to improve on-site constructability and to secure the performance of the negative moment section of the composite slab and structural integrity after concrete hardening. Background Technology

[0002] The deep deck system, widely used in Korea, is designed to ensure the structural performance of slabs by being used in conjunction with steel wire truss girders (hereinafter referred to as 'TG girders'). TG girders are three-dimensional truss reinforcements manufactured in a factory, in which the upper and lower reinforcements are connected by inclined lattice shear reinforcements and are embedded within concrete slabs to function as structural elements. However, the existing construction method has the following problems after the concrete hardens, that is, at the stage where it acts as a structural member.

[0003] First, there are issues regarding construction improvement. Specifically, in TG girder systems, the upper and lower reinforcements are installed on the deck, and in many cases, sufficient anchorage length is not secured at the connection point with the beam. TG girders often do not extend to the slab end supports, and if the upper reinforcement is not anchored across the beam, its function as tensile reinforcement deteriorates in the negative moment zone, making it disadvantageous to ensure structural safety. To compensate for this, the placement of separate field reinforcement is required, but this complicates the construction process, increases working time, and causes problems with uneven anchorage quality.

[0004] Second, there is a problem regarding the efficiency of shear reinforcement. Specifically, the inclined lattice shear reinforcement applied to TG girders is not aligned with the direction of load application (vertical shear force), resulting in limited crack control and shear resistance effects. The inclined reinforcement does not sufficiently intersect shear cracks, and when shear cracks occur, the reinforcement tends to align with the crack surface, reducing the confinement effect. Consequently, there is a possibility that the shear reinforcement performance may fall short of the design, and there are limitations in securing the shear strength of the entire slab.

[0005] Third, there is a problem regarding the improvement of constructability to ensure structural integrity. Specifically, after concrete is poured and hardened into the combination of the deck and TG girder, it behaves as a ribbed slab, which is referred to as a deep deck slab. The anchorage of the TG girder's reinforcement at the support of the deep deck slab plays a key role in ensuring structural integrity along with structural safety. However, if existing TG girders are not continuous or anchored through the support, the upper tension reinforcement—which passes through the top of the support via splicing to resist negative moments in the event of support damage—will detach after concrete cover spalling. Consequently, catenary action cannot occur, leading to the collapse of the entire slab and potentially causing a chain collapse of the lower floors due to falling. To prevent this, structural standards require that a certain percentage of the lower reinforcement be continuously arranged through the support or that Class B tension anchorage be used; however, this has the disadvantage of significantly reduced constructability due to reasons such as reinforcement interference and insufficient space at the anchorage. Prior art literature

[0006] Republic of Korea Registered Patent No. 10-1676841 The problem to be solved

[0007] Accordingly, the present invention was devised to solve the problems of the prior art as described above, and aims to provide a deep deck having a reinforcing assembly and a method of constructing the same, which enables the construction of the deep deck to be simple and rapid by forming and providing a reinforcing assembly that integrates the upper reinforcing bar and the shear reinforcing bar configured in the deep deck.

[0008] Another objective of the present invention is to provide a deep deck having a reinforcing bar assembly that can improve constructability by minimizing on-site reinforcement and anchoring work through the reinforcing bar assembly, and a method for constructing the same.

[0009] Another objective of the present invention is to provide a deep deck having a reinforcing bar assembly that ensures the continuity and anchorage of the upper reinforcing bar in the reinforcing bar assembly, thereby realizing structural integrity and continuous behavior and preventing chain collapse, and a method for constructing the same. means of solving the problem

[0010] A deep deck having a reinforcing bar assembly according to the present invention for achieving the above-mentioned purpose is characterized in that an upper reinforcing bar is welded and fixed to a bent support portion bent to both sides from a central protruding support portion of a shear reinforcing bar to form an integrated reinforcing bar assembly, and the central protruding support portion and the bent support portions on both sides formed in the shear reinforcing bar of the reinforcing bar assembly are coupled to the upper surface of the deep deck coupled to the beam in a shape-matched manner.

[0011] In addition, it is preferable that the reinforcing bar assembly be installed from the end of the deep deck connected to the beam towards the center, with a length of 25 to 30 percent of the length of the deep deck connecting the beams.

[0012] In addition, the reinforcing bar assembly can be formed by welding each intersection point while the upper reinforcing bars are positioned orthogonally on both sides of the reinforcing bar material before forming it into a shear reinforcing bar, and then pressing the reinforcing bar material with the welded upper reinforcing bars to form it into a shear reinforcing bar.

[0013] Meanwhile, a method for constructing a deep deck having a reinforcing bar assembly to achieve the above-mentioned purpose is a method for constructing a deep deck for constructing the deep deck described above, comprising the steps of: installing a lower reinforcing bar across the groove of the deep deck connected to the beam and the beam; installing a lower reinforcing bar parallel to the lower reinforcing bar in the groove of the deep deck where the lower reinforcing bar is installed; installing a reinforcing bar assembly, in which an upper reinforcing bar is welded to both bent support portions of the shear reinforcing bar and integrated, by connecting it to the upper surface of the deep deck in a shape-matched manner; and installing a first upper reinforcing bar and a second upper reinforcing bar orthogonally on the upper surface of the deep deck where the reinforcing bar assembly is installed.

[0014] In addition, it is preferable that the reinforcing bar assembly be installed from the end of the deep deck connected to the beam towards the center, with a length of 25 to 30 percent of the length of the deep deck connecting the beams.

[0015] In addition, the method may further include a pretreatment step of forming a reinforcing bar assembly by welding each intersection point while the upper reinforcing bars are positioned orthogonally on both sides of the reinforcing bar material before forming it into a shear reinforcing bar, and then pressing the reinforcing bar material with the integrated upper reinforcing bars to form it into a shear reinforcing bar. Effects of the invention

[0016] According to the deep deck having a reinforcing bar assembly and the method of constructing the same, by providing a reinforcing bar assembly in which the upper reinforcing bar and the shear reinforcing bar configured in the deep deck are integrally manufactured, the reinforcing bar assembly can be easily constructed on-site.

[0017] In addition, according to the present invention, the reinforcing bar assembly is provided as a rebar assembly in which the upper reinforcing bar and the shear reinforcing bar perpendicular to it are precision welded in the factory to become an integrated structure, so that it is continuously arranged through the support member (beam) toward the center of both deep deck slabs, so that the upper reinforcing bar can effectively resist the negative moment tensile force generated in the hardened concrete slab structure, and in particular, as the upper reinforcing bar is continuously installed in both directions of the deck slab, it has the effect of securing the rebar anchorage length centered on the support member (beam).

[0018] In addition, according to the present invention, the shear reinforcement is vertically arranged in the upper and lower thickness directions of the concrete, thereby aligning with the vertical shear cracks occurring within the slab to provide effective shear resistance performance. This improves the problems of insufficient shear resistance and insufficient crack intersection that appear in the inclined lattice structure of existing TG girders, thereby providing stable resistance to shear stress within the slab structure.

[0019] Furthermore, according to the present invention, even if the support member (beam) is destroyed after the concrete hardens, the upper reinforcing bar is reliably restrained by the shear reinforcing bar so that the reinforcing bar does not fall out of the concrete. Since the restrained upper reinforcing bar is continuously arranged on both slabs, catenary action is maintained, thereby redistributing the load of the slab to adjacent structures and ensuring the continuity and toughness of the entire structural system, which has the effect of effectively preventing chain collapse.

[0020] In summary, the technology according to the present invention can solve structural deficiencies of TG girder-based reinforced concrete truss slab systems, particularly insufficient tensile reinforcement and lack of shear reinforcement effect in the negative moment section after hardening, as well as the problem of non-integration of reinforcement anchorage, and is an efficient technology that can simultaneously achieve structural integrity and improved constructability. Brief explanation of the drawing

[0021] FIG. 1 is a schematic diagram illustrating the installation structure of a deep deck to which a reinforcing bar assembly according to the present invention is applied. FIG. 2 is a planar configuration diagram illustrating the installation structure of a deep deck to which a reinforcing bar assembly according to the present invention is applied. FIG. 3 is an enlarged view of a key part of a deep deck with a reinforcing bar assembly installed according to the present invention. FIG. 4 is a front view of a deep deck with a reinforcing bar assembly installed according to the present invention. FIG. 5 is a plan view illustrating a fixing structure of an upper reinforcing bar and a shear reinforcing bar for forming a reinforcing bar assembly according to the present invention. FIG. 6 is a process diagram in which a reinforcing bar assembly according to the present invention is formed by press processing. FIG. 7 is a drawing of a reinforcing bar assembly according to the present invention in a molded state. Specific details for implementing the invention

[0022] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0023] The terms used in this invention are defined in consideration of their functions within the invention; however, since these may vary depending on the intentions or practices of the user or operator, the definitions of these terms should be interpreted in a sense and concept consistent with the technical details of this invention.

[0024] In addition, the embodiments of the present invention are not intended to limit the scope of the rights of the present invention, but are merely exemplary matters of the components presented in the claims of the present invention, and are embodiments that include components that are included in the technical concept throughout the specification of the present invention and can be substituted as equivalents for the components of the claims.

[0025] Additionally, optional terms in the following examples are used to distinguish one component from another, and the components are not limited by said terms.

[0026] Accordingly, in describing the present invention, detailed descriptions of related prior art that may unnecessarily obscure the essence of the invention are omitted.

[0027] The attached drawings, Figures 1 to 7, are drawings illustrating the manufacturing process of a deep deck and a reinforcing bar assembly with the reinforcing bar assembly installed according to the present invention.

[0028] The deep deck (100) according to the present invention includes a reinforcing assembly (140) as shown in FIGS. 1 to 3.

[0029] First, the deep deck (100) is installed by being fixed and connected to the steel structure forming the beam (200).

[0030] As shown in FIGS. 1 and 3, this deep deck (100), that is, a deep deck, includes a horizontal deck section (110) formed by bending vertically to reinforce strength in order to prevent sagging and bending phenomena during concrete pouring, a beam deck section (120) having a groove section (121) formed by bending downward at regular intervals from the horizontal deck section (110) and having strength to support a load due to bending moment and to prevent sagging and bending phenomena during concrete pouring, and a reinforcement section to compensate for the weakness of the tensile stress of the concrete (C) after concrete pouring with a number of reinforcement bars.

[0031] The horizontal deck section (110) and the beam deck section (120) are preferably made of galvanized steel, and the thickness is preferably 0.8 mm or more.

[0032] In addition, the reinforcing bar portion formed in the deep deck (100) is embedded in the concrete (C) poured over the multiple reinforcing bars, thereby not only reinforcing the concrete (C) and the deep deck (100) but also enabling the integrated behavior of the deep deck (100), the concrete (C), and the beam (200).

[0033] Meanwhile, the reinforcing bar section configured in the deep deck (100) as described above includes a plurality of upper reinforcing bars (131)(132) installed in a horizontal grid shape on the upper part of the horizontal deck section (110) to reinforce the twisting and bending of the beam (200), lower reinforcing bars (150) and lower reinforcing bars (151) installed on the lower part of the beam deck section (120) to reinforce the beam (200) while their ends are bent toward the upper reinforcing bars (131)(132) to reinforce the shear force of the beam (200), and a reinforcing bar assembly (140) coupled to the upper surface of the deep deck (100) in a shape-matched manner to reinforce the shear force of the deep deck (100).

[0034] Here, the lower reinforcing bar (150) is a single straight reinforcing bar and is installed in the longitudinal direction of the deep deck (100) in the groove (121) of the deep deck (100) as shown in FIG. 4, and such a single lower reinforcing bar (150) is installed to pass through and cross the deep deck (100) as well as the beam (200).

[0035] And, the lower reinforcing bar (151) is installed in the groove (121) of the deep deck (100) so as to be adjacent to the lower reinforcing bar (150), but unlike the lower reinforcing bar (150), it is provided only in the groove (121) of the deep deck (100) so as not to go beyond the beam (200).

[0036] The reason for installing the lower reinforcing bar (151) in a limited manner only in the groove (121) of the deep deck (100) is that when concrete is poured over the deep deck (100), the greatest sagging and bending occur in the central part of the deep deck (100) far from the beam (200), so that the sagging and bending phenomena of the deep deck (100) along with the beam deck part (120) are prevented, thereby allowing the load caused by the bending moment to be firmly supported.

[0037] Multiple upper reinforcing bars (131) (132) are installed in a grid shape on the upper part of the reinforcing bar assembly (140).

[0038] That is, among the multiple upper reinforcing bars (131) (132), the first upper reinforcing bar (131) is installed by being arranged in the longitudinal direction of the deep deck (100), and the second upper reinforcing bar (132) is installed by being arranged perpendicular to the first upper reinforcing bar (131) at the bottom of the first upper reinforcing bar (131).

[0039] Additionally, the first upper reinforcing bar (131) is a single straight reinforcing bar and is provided parallel to the lower reinforcing bar (150) across the upper part of the beam (200) just like the lower reinforcing bar (150) on the upper part of the deep deck (100).

[0040] And, as shown in FIGS. 3 and 4, the reinforcing bar assembly (140) is integrally formed by welding upper reinforcing bars (141) made of straight reinforcing bars to both sides of the shear reinforcing bar (142).

[0041] These shear reinforcing bars (142) are reinforcing bars formed by bending into a shape corresponding to the deep deck (100), and in the central part, a protruding support part (142a) corresponding to the groove (121) of the deep deck (100) is formed protruding downward, and on both sides, a bent support part (142b) is formed by bending and extending from the protruding support part (142a) to both sides and having a shape corresponding to the horizontal deck part (110) on the upper surface of the deep deck (100).

[0042] In particular, the upper reinforcing bar (141) is welded in an orthogonal manner to the lower side of both bent support portions (142b) of the shear reinforcing bar (142), thereby fixing the upper reinforcing bar (141) to both sides of the shear reinforcing bar (142) and forming it as a single unit.

[0043] Thus, the central protruding support portion (142a) and the bending support portions (142b) on both sides of the shear reinforcing bar (142) constituting the reinforcing bar assembly (140) are combined and fixed in a shape-matched manner to the groove portion (121) of the deep deck (100) and the horizontal deck portion (110) on the upper surface.

[0044] Such a reinforcing assembly (140) is formed with a length (0.25 to 0.3 L) of 25 to 30 percent of the length (L) of the deep deck (100) connecting the beams (200) and it is preferable that such a reinforcing assembly (140) be installed from the end of the deep deck (100) connected to the beam (200) toward the center.

[0045] This is intended to reinforce the shear force and moment acting intensively at the end of the deep deck (100) connected to the beam (200), since the shear force and moment act intensively at the end of the deep deck (100) connected to the beam (200).

[0046] And, the reinforcing bar assembly (140) as described above is formed by welding (W) each intersection of upper reinforcing bars (141) made of straight reinforcing bars on both sides of a reinforcing bar material (142-1) before forming it into a shear reinforcing bar (142) as in FIG. 5, and then, as in FIG. 6, the reinforcing bar material (142-1) with the upper reinforcing bars (141) welded (W) is pressed with an upper mold (300) and a lower mold (400) as in FIG. 6 to form it into a shear reinforcing bar (142), thereby forming the reinforcing bar assembly (140) as in FIG. 7.

[0047] In particular, the upper mold (300) and the lower mold (400) are formed with a shape in which the lower surface and the upper surface that face each other correspond.

[0048] That is, as shown in FIG. 6, the upper mold (300) has a central protrusion (310) formed to protrude longest in the center of the lower part to form a central protruding support part (142a) of the shear reinforcing bar (142), and on both sides, lateral protrusions (320) are formed to protrude shorter than the central protrusion (310) to form a bent support part (142b) of the shear reinforcing bar (142).

[0049] And, the lower mold (400) has a central groove (410) formed in the center of its upper surface, which is deeply recessed so that the central protrusion (310) of the upper mold (300) is inserted and joined in a shape-matched state, and on both sides, a stepped bending section (420) is formed by bending outward from the central groove (410).

[0050] Since the lateral protrusion (320) of the upper mold (300) is seated and contacted at the stepped end of the bent step portion (420), the two bent support portions (142b) of the shear reinforcing bar (142) can be formed in a shape corresponding to the horizontal deck portion (110) on the upper surface of the deep deck (100).

[0051] The construction method of a deep deck having a reinforcing bar assembly according to the present invention as described above includes the steps of: installing a lower reinforcing bar (150) so that the groove (121) of the deep deck (100) coupled to the beam (200) and the beam (200) are crossed; installing a lower reinforcing bar (151) in parallel with the lower reinforcing bar (150) in the groove (121) of the deep deck (100) where the lower reinforcing bar (150) is installed; installing a reinforcing bar assembly (140) in which the upper reinforcing bar (141) is welded to both bent support portions (142b) of the shear reinforcing bar (142) to form an integrated structure, and installing the reinforcing bar assembly (140) by connecting it to the upper surface of the deep deck (100) in a shape-matched manner; and installing a first upper reinforcing bar (131) and a second upper reinforcing bar (132) perpendicularly on the upper surface of the deep deck (100) where the reinforcing bar assembly (140) is installed.

[0052] In addition, the method further includes a pretreatment step of forming a reinforcing bar assembly (140) by welding (W) each intersection of upper reinforcing bars (141) on both sides of a reinforcing bar material (142-1) before forming it into a shear reinforcing bar (142) while the upper reinforcing bars (141) are orthogonally positioned, and then pressing the reinforcing bar material (142-1) with the upper reinforcing bars (141) integrated into an upper mold (300) and a lower mold (400) to form a shear reinforcing bar (142).

[0053] Here, in describing the construction method of the deep deck (100), the installation of the beam (200) and the installation of the deep deck (100) coupled to the beam (200) are carried out in a manner similar to the construction method of the deep deck disclosed in Patent No. 10-2268469 and Patent No. 10-2784303 registered by the applicant, so the description thereof is omitted, and in the present invention, only the process of constructing the reinforcing bar section on the deep deck (100) installed on the beam (200) is described in detail.

[0054] First, the lower reinforcing bar (150) and the lower reinforcing bar (151) are installed side by side in the groove (121) of the deep deck (100).

[0055] That is, the lower reinforcing bar (150) is a single straight reinforcing bar, and is installed by being arranged in the longitudinal direction of the deep deck (100) in the groove (121) of the deep deck (100), and is also installed in a state that passes through and crosses the beam (200).

[0056] The lower reinforcing bar (151) is a single straight reinforcing bar having a shorter length than the lower reinforcing bar (150), and is installed adjacent to the lower reinforcing bar (150) in the groove (121) of the deep deck (100). Unlike the lower reinforcing bar (150), the lower reinforcing bar (151) installed in this manner is installed only in the groove (121) of the deep deck (100) so as not to extend beyond the beam (200).

[0057] Thus, by preventing large deflection and large bending acting in the central part of the deep deck (100) during concrete pouring, it becomes possible to firmly support the load caused by the bending moment.

[0058] And, the reinforcing bar assembly (140) is an assembly reinforcing bar formed integrally by welding an upper reinforcing bar (141) to both bent support portions (142b) of a shear reinforcing bar (142), and the central protruding support portion (142a) and the bent support portions (142b) of the shear reinforcing bar (142) constituting the reinforcing bar assembly (140) are fixed by connecting them to the groove portion (121) and the horizontal deck portion (110) of the deep deck (100) in a shape-matched manner.

[0059] Then, the shear reinforcement (142) of the reinforcement assembly (140) is connected to the deep deck (100) in a shape-matched manner, and the upper reinforcement (141) is arranged parallel to each other along both horizontal deck sections (110) of the deep deck (100).

[0060] In particular, the reinforcing bar assembly (140) installed as described above is installed at the end of the deep deck (100) connected to the beam (200), and is installed from the end of the deep deck (100) connected to the beam (200) toward the center side with a length (0.25 to 0.3 L) of 25 to 30 percent of the length (L) of the deep deck (100) between the beams (200).

[0061] Thus, the shear force and moment acting intensively at the end of the deep deck (100) connected to the beam (200) are reinforced.

[0062] And, a plurality of upper reinforcing bars (131) (132) are reinforcing bars installed in a grid shape on the upper part of the reinforcing bar assembly (140), and among the plurality of upper reinforcing bars (131) (132), the first upper reinforcing bar (131) is installed in the longitudinal direction of the deep deck (100), and the second upper reinforcing bar (132) is installed at the lower part of the first upper reinforcing bar (131) in a manner perpendicular to the first upper reinforcing bar (131).

[0063] This first upper reinforcing bar (131) is a single straight reinforcing bar like the lower reinforcing bar (150), and is installed parallel to the lower reinforcing bar (150) in a manner that crosses the upper part of the beam (200) from the upper part of the deep deck (100).

[0064] Accordingly, in the present invention, when constructing a reinforcing bar section on a deep deck (100), by providing a reinforcing bar assembly (140) in which the upper reinforcing bar (141) and the shear reinforcing bar (142) are integrated, the construction process of the upper reinforcing bar and the shear reinforcing bar, which is the most difficult and cumbersome, is unified, thereby reducing the construction process and shortening the construction time.

[0065] Although the present invention has been described in detail through specific embodiments, this is for the purpose of specifically explaining the invention, and the invention is not limited thereto. It is evident that modifications or improvements can be made by those skilled in the art within the technical scope of the present invention.

[0066] All simple variations or modifications of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be clarified by the appended claims. Explanation of the symbols

[0067] 100: Deep deck 110: Horizontal deck section 120: Beam deck section 121: Groove 131, 132: Upper reinforcement 140: Reinforcement assembly 141: Upper reinforcement 142: Shear reinforcement 142a: Protruding support 142b: Bending support 142-1: Reinforcement material 150: Lower reinforcement 151: Lower reinforcement 200: Beam 300: Upper mold 310: Central protrusion 320: Lateral protrusion 400: Lower mold 410: Central groove 420: Bending step section C: Concrete L: Length of the deep deck connecting beams W: Welded section

Claims

Claim 1 A deep deck comprising a beam deck section installed on a beam and composed of a horizontal deck section and a groove formed by a depression between the horizontal deck sections, and a reinforcing bar section installed on the beam deck section and the horizontal deck section, wherein the reinforcing bar section comprises a plurality of upper reinforcing bars installed in a grid shape on the horizontal deck section, lower reinforcing bars and lower reinforcing bars installed within the groove of the beam deck section, and a reinforcing bar assembly provided by being coupled to the deep deck in a shape-matched manner, wherein the lower reinforcing bars are installed in a state that crosses the beam from the groove of the deep deck, and the lower reinforcing bars are installed only in the groove of the deep deck, and the reinforcing bar assembly comprises a shear reinforcing bar including a central protruding support and a bent support section formed by being bent to both sides from the protruding support to form a shape corresponding to the horizontal deck section of the deep deck, and having the upper reinforcing bar integrally molded therein, wherein the central protruding support formed on the shear reinforcing bar of the reinforcing bar assembly is coupled to the beam deck section of the deep deck in a shape-matched manner, and the bent support sections on both sides are formed to the corresponding horizontal deck section of the deep deck A deep deck that is fitted and joined by fitting, and a reinforcing bar assembly that is installed from the end of the deep deck joined to the beam toward the center, with a length of 25 to 30 percent of the length of the deep deck connecting the beams. Claim 2 delete Claim 3 A deep deck according to claim 1, wherein the reinforcing bar assembly is formed by welding each intersection while upper reinforcing bars are orthogonally positioned on both sides of a reinforcing bar material before forming into a shear reinforcing bar, and then pressing the reinforcing bar material with the welded upper reinforcing bars to form into a shear reinforcing bar. Claim 4 A method for constructing a deep deck according to either claim 1 or claim 3, comprising: a step of installing lower reinforcing bars so as to cross the groove of the deep deck connected to the beam and the beam; a step of installing lower reinforcing bars parallel to the lower reinforcing bars only in the groove of the deep deck where the lower reinforcing bars are installed; a step of inserting and connecting a central protruding support formed on the shear reinforcing bar of the reinforcing bar assembly into the beam deck portion of the deep deck in a shape-matching manner, and installing the bent support portions on both sides, which are integrally molded with the upper reinforcing bar, by seated and connecting them to the corresponding horizontal deck portion of the deep deck in a shape-matching manner; and a step of installing a first upper reinforcing bar and a second upper reinforcing bar orthogonally on the upper part of the deep deck where the reinforcing bar assembly is installed; wherein the reinforcing bar assembly is installed from the end of the deep deck connected to the beam toward the center, with a length of 25 to 30 percent of the length of the deep deck connecting the beams. Claim 5 delete Claim 6 A method for constructing a deep deck according to claim 4, further comprising a pretreatment step of integrating upper reinforcing bars on both sides of a reinforcing bar material before forming into a shear reinforcing bar by welding each intersection to form an integral structure, and then forming the reinforcing bar material with the integrated upper reinforcing bars into a shear reinforcing bar by pressing.

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