JP2013007229A - Slab construction method and deck plate structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slab construction method, which can assemble a deck plate structure simultaneously with constructing a framework, enabling a slab to be constructed in a short work period.SOLUTION: A slab construction method in the present invention comprises: a framework construction step, in which a plurality of columns 33 are erected with a main beam 34 being installed at the upper part of them, constructing a framework 35 of a building structure 14; a deck plate structure assembly step, in which, simultaneously with the framework construction step, a plurality of deck plates formed with a longitudinally-long metal plate and a longitudinally-extending reinforcement truss fitted on the upper surface of the metal plate are joined in the lateral direction, and a laterally-extending installation beam 12 is fixed to the bottom surface of the metal plate, assembling a deck plate structure 10; and a deck plate structure installation step, in which the structure 10 is lifted and placed in an upper floor space 42 surrounded by the columns 33 and the main beams 34, and the main beams 34 and the installation beams 12 are connected with predetermined connection means, installing the structure 10 in the space 42.

Description

  The present invention relates to a slab construction method for constructing a slab on an upper floor of a building and a deck plate structure used for constructing the slab.

  A metal plate having a predetermined area, a plurality of reinforcing bars trusses positioned on the upper surface of the metal plate and extending in the vertical direction, and a plurality of horizontal bars positioned on the upper surface of the metal plate and extending in the horizontal direction intersecting the vertical direction, A reinforcing bar truss, which is located above the upper surface of the metal plate and extending in the vertical direction; a pair of lower reinforcing bars positioned between the metal plate and the upper bar; There is a deck plate formed of a pair of lattice lines extending in the vertical direction while repeatedly bending in the vertical direction between them (see Patent Document 1). In the deck plate, the lattice stripes spread from the top to the bottom, the top of the lattice is welded to the top, the middle of the lattice is welded to the bottom, and the bottom of the lattice is the top of the metal plate. It is welded to. The horizontal streak is arranged on the upper part of the upper end muscle, and is connected to the upper end line through a binding line at the intersection with the upper end line.

JP 2010-275740 A

  When the deck plate disclosed in Patent Literature 1 is used to construct a slab on the upper floor of a building, after the framework of the building is completed, a plurality of deck plates are sequentially lifted by a crane, While placing the deck plate in order in the form formed in the space between the column and the beam, the operator rides on the deck plate and welds its ends and sides to the beam one by one. The deck plate structure is made by connecting the deck plates laterally. Next, after placing the horizontal bars above the upper bars forming the deck plate and connecting the upper bars and the horizontal bars via the binding lines at the intersections with the upper bars, the concrete is put into the formwork from above the deck plate. After the concrete is cured for a predetermined period, the mold is removed to complete the slab.

  In addition, when building a slab according to the above procedure, the operator must work on the deck plate, and for safety of the operator, laying a safety net below the upper floor space, The worker had to weld the deck plate to the beam one by one, and it took time and labor to build the slab. Also, until the framework of the building was completed, the deck plate could not be installed, and a plurality of deck plate structures could not be assembled in advance in parallel with the construction of the framework. Therefore, if the construction of the frame is delayed, the installation work of the deck plate is delayed accordingly, and the construction period of the slab construction cannot be shortened. Also, the deck plate assembler could not move to another site, and the turnover rate of the assembler's work was reduced.

  An object of the present invention is to provide a slab construction method capable of constructing a slab on an upper floor of a building without requiring labor and time, and a deck plate structure used for constructing the slab. Another object of the present invention is that the deck plate structure can be assembled in parallel with the construction of the skeleton, the slab can be constructed in a short construction period, and the turnover rate of the work of the deck plate structure assembler can be reduced. An object of the present invention is to provide a slab construction method that can be improved and a deck plate structure used for construction of the slab.

  The first premise of the present invention for solving the above problem is a slab construction method for constructing a slab on the upper floor of a building.

  The feature of the slab construction method of the present invention in the first premise is that, while the slab construction method installs a plurality of columns extending in the vertical direction, a main beam is installed above the columns to form a framework of the building. A plurality of decks formed from a framework construction process to be constructed, and a metal plate having a predetermined area and extending in the first direction and a reinforcing bar truss installed on the upper surface of the metal plate and extending in the first direction simultaneously with the framework construction process A deck plate structure assembling step for assembling a deck plate structure having a predetermined area by fixing a mounting beam extending in the second direction to the lower surface of the metal plate while connecting the plates in a second direction intersecting the first direction; The deck plate structure is constructed by suspending the plate structure and arranging the deck plate structure in the space on the upper floor surrounded by the pillar and the main beam, and connecting the main beam and the mounting beam via a predetermined connection means. It lies in having a deck plate structure installation step of installing in the space.

  As an example of the slab construction method according to the present invention, the deck in which the slab construction method stacks a plurality of assembled deck plate structures in the vertical direction on the ground in parallel with the framework construction process after the deck plate structure assembly process. Including the plate structure temporary placement process, in the framework construction process, after the deck plate structure is installed on a predetermined floor by the deck plate structure installation process, the framework on the floor immediately above is constructed and the deck plate structure is installed. In the process, the deck plate structures stacked in the deck plate structure temporary placing process are installed on a predetermined floor in order from the top.

  As another example of the slab construction method according to the present invention, the slab construction method is the deck plate structure directly above the mounting beam on the upper surface of the metal plate, in parallel with the framework construction process after the deck plate structure assembly process. And a hook installation step of detachably attaching the lifting hook to the mounting beam.

  As another example of the slab construction method according to the present invention, the slab construction method includes a plurality of horizontal bars extending in the second direction while being spaced apart by a predetermined dimension in the first direction after the deck plate structure installation step. It includes a bar arrangement process for connecting to a truss through a binding line, and a placing process for placing a hardened cement material on the upper surface of the metal plate after the bar arrangement process.

  As another example of the slab construction method according to the present invention, the connecting means for connecting the main beam and the mounting beam has a plurality of first connecting holes arranged in the vertical direction and fixed to the side of the main beam. In the deck plate structure installation step, the first connecting jig is formed from a first connecting jig and a second connecting jig in which a plurality of second connecting holes arranged in the vertical direction are perforated and fixed to both ends of the mounting beam. While aligning the first connection hole of the connection jig with the second connection hole of the second connection jig, the bolts are inserted into the connection holes, and nuts are screwed into the bolts to connect the main beam and the mounting beam. To do.

  As another example of the slab construction method according to the present invention, in the slab construction method, a first upper bar located above the upper surface of the metal plate and extending in the first direction is positioned between the metal plate and the upper bar. A pair of lower bars extending in one direction, and a pair of lattice bars extending in the first direction while repeatedly bending in a wave shape between the metal plate and the upper bars, and extending from the upper part toward the lower part. A reinforcing bar truss is formed, the upper part of the lattice is welded to the upper part, the middle part of the lattice is welded to the lower part, and the lower part of the lattice is welded to the upper surface of the metal plate to produce a deck plate.

  As another example of the slab construction method according to the present invention, in the slab construction method, a pair of ridges protruding upward from the upper surface of the metal plate and extending in the first direction are formed on the metal plate so as to be positioned on both sides of the upper end bar. Then, the lower part of the lattice stripe is bent in the second direction so as to be parallel to the upper surface of the metal plate to form a leg, and the portion of the leg that intersects with the ridge is convex with the upper surface spaced apart from the upper surface of the metal plate. The deck plate is manufactured by welding to the strip.

  As another example of the slab construction method according to the present invention, the mounting beam is an H-shaped steel, and in the deck plate structure assembling process, a flange of the H-shaped steel is welded to the lower surface of the metal plate.

  The second premise of the present invention for solving the above-mentioned problem is a deck plate structure used for construction of a slab on the upper floor of a building.

  The deck plate structure of the present invention according to the second premise is characterized in that the deck plate structure is formed of a metal plate having a predetermined area and a reinforcing bar truss installed on the upper surface of the metal plate and extending in the first direction. A plurality of deck plates coupled in a second direction intersecting the first direction, an H-section steel extending in the second direction while being spaced apart by a predetermined dimension in the first direction and welded to the lower surface of the metal plate, and a metal plate The connecting jig is formed of a lifting hook that is detachably attached to the H-shaped steel and is located immediately above the H-shaped steel on the upper surface of the steel. It exists in being formed in both ends.

  As an example of the deck plate structure according to the present invention, a reinforcing bar truss is positioned between the upper end of the metal plate and extending in the first direction, and is positioned between the metal plate and the upper end. Formed from a pair of bottom bars extending in the direction and a pair of lattice bars extending in the first direction while repeatedly bending in a wavy shape between the metal plate and the top bars, and extending from the top to the bottom. The upper part of the lattice is welded to the upper end, the middle part of the lattice is welded to the lower part, and the lower part of the lattice is welded to the upper surface of the plate.

  As another example of the deck plate structure according to the present invention, a pair of ridges protruding upward from the upper surface of the metal plate and extending in the first direction are formed on the metal plate so as to be located on both sides of the upper bar, Bend in the second direction so that the lower part of the streak is parallel to the upper surface of the metal plate and intersect with the ridge at two points, and the part of the lower part of the lattice that intersects the ridge above the upper surface of the metal plate It is welded to the ridge in a state of being spaced apart.

  According to the slab construction method of the present invention, the deck plate structure is lifted and the deck plate structure is disposed in the space on the upper floor surrounded by the pillar and the main beam, and the main beam is connected via the predetermined connecting means. Since the deck plate structure is installed in the space by connecting the mounting plate and the mounting beam, the worker rides on the deck plate one by one as in the conventional slab construction method, and mainly covers the end and side of the deck plate. There is no need to weld to the beam, and there is no need to lay a safety net. Deck plate structures can be installed in the upper floor space without labor and time, and a slab can be built in a short construction period. can do. The slab construction method assembles a deck plate structure of a predetermined area at the same time as the framework construction, so it is possible to assemble multiple deck plate structures regardless of the progress of the framework construction, and in parallel with the framework construction. Multiple deck plate structures can be made in advance. In the slab construction method, even if the construction of the framework is delayed, the deck plate structure can be quickly installed in the upper floor space immediately after the construction of the framework is completed, and the slab can be constructed in a short construction period. Moreover, regardless of the progress of the construction of the skeleton, the assembler of the deck plate can move to another site, and the turnover rate of the assembler's work can be improved.

  After assembling the deck plate structure, the assembled deck plate structures are stacked vertically on the ground in parallel with the framework construction process, and after the deck plate structure is installed on a predetermined floor, it is directly above The slab construction method that constructs the framework of the floor and installs the stacked deck plate structures for each predetermined floor in order from the top is to install the deck plate structures in order from the lowest floor of the upper floors of the building, After the deck plate structure is installed on the floor, the skeleton of the floor directly above is constructed, and the stacked deck plate structure is installed on the floor directly above from the top. There is no need to assemble the deck plate structure according to the construction progress of the construction, and the assembler will pre-install the required number of deck plate structures. It is only necessary to stack these deck plate structures on the ground in the vicinity of the building, and after the assembler performs the assembly work and the stacking work, the work at the next site can be started immediately. The turnover rate of the trader's work can be improved. The slab construction method is to install the stacked deck plate structures in the upper floor space in order from the top, and the operator gets on the deck plate one by one and uses the end and side of the deck plate as the main beam. It is not necessary to weld, and the deck plate structure can be installed in the space on the upper floor without requiring labor and time, and the slab can be constructed in a short construction period.

  After assembling the deck plate structure, a lifting hook for the deck plate structure is placed on the upper surface of the metal plate directly above the mounting beam in parallel with the frame construction process, and the lifting hook is detachably attached to the mounting beam. In the slab construction method, the deck plate structure can be lifted by simply attaching the lifting hook for lifting the deck plate structure to the assembled beam of the deck plate structure. The deck plate structure can be installed in the upper floor space without requiring labor and time, and the slab can be constructed in a short construction period.

  After the deck plate structure is installed, a plurality of horizontal bars extending in the second direction while being spaced apart by a predetermined distance in the first direction are connected to the reinforcing bar trusses of the deck plate via tie wires, and after arranging the horizontal bars, the metal plate The slab construction method in which hardened cement is placed on the upper surface of the deck does not require labor and time to install the deck plate structure in the upper floor space, and the deck plate structure can be installed in a short period of time. After placing the horizontal bars on the reinforcing bar truss of the installed deck plate structure, the slab can be built by placing hardened cement on the upper surface of the metal plate, so the slab can be built in a short construction period. .

  A plurality of first connecting holes in which the connecting means are arranged in the vertical direction are perforated and a first connecting jig fixed to the side of the main beam and a plurality of second connecting holes in the vertical direction are drilled to form both ends of the mounting beam The second connecting jig is fixed to the part, and the first connecting hole of the first connecting jig is aligned with the second connecting hole of the second connecting jig, and bolts are inserted into the connecting holes. The slab construction method for connecting the main beam and the mounting beam by screwing the nut onto the bolt connects the main beam and the mounting beam by the connecting means formed of the first connecting jig and the second connecting jig. It is possible to install the deck plate structure in the upper floor space without requiring labor and time, so the deck plate structure can be installed in a short period of time, and the slab can be built in a short construction period. can do.

  An upper edge located above the upper surface of the metal plate, a pair of lower muscles located between the metal plate and the upper muscle, and an upper portion of the metal plate while repeatedly bending in a wave shape between the upper edge and the metal plate. A reinforcing bar truss is formed from a pair of latticed bars extending from the bottom to the bottom, the top of the lattice is welded to the top, the middle of the lattice is welded to the bottom, and the bottom of the lattice is metal The slab construction method of manufacturing a deck plate by welding to the upper surface of the steel plate is a pair of deck plates that are formed of a metal plate and a reinforcing bar truss, and the reinforcing bar truss repeatedly bends in an upward and downward direction in a wavy shape. The lattice plate has a function as a reinforcing bar that reinforces the space between the upper and lower muscles, so that the deck plate structure not only has sufficient strength, but also a hardened cement is placed on it. Shi Bending acting on the cement cured tensile force and bending compressive force when the hardened cement product can be sufficiently reinforced to cement cured can withstand shear forces, it is possible to build a solid slab. In the slab construction method, since the lower part of the lattice is in contact with the metal plate, when the hardened cement is placed on the deck plate structure, the lower part of the lattice is hardened by cement compared to the case where there is no metal plate. It is possible to prevent the lattice of the lattice from being corroded and the strength of the slab from being lowered by the corrosion of the lattice.

  A pair of ridges projecting upward from the upper surface of the metal plate and extending in the first direction are formed on the metal plate so as to be positioned on both sides of the upper end muscle, and the second portion so that the lower portion of the lattice line is parallel to the upper surface of the metal plate. The slab construction method in which a leg plate is formed by bending in a direction and welding a deck plate with a portion of the leg that intersects the convex strip spaced upward from the upper surface of the metal plate. Since the welded portion between the ridge and the leg of the lattice line is above the upper surface of the iron plate, it is possible to construct a slab that does not cause a mark due to welding on the lower surface of the metal plate as well as the upper surface of the metal plate. . Since the slab construction method suppresses the flexibility of the metal plate, the slab construction method can prevent the metal plate from bending and distorting, and the metal plate and the lattice bars are not released, and the deck plate structure The hardened cement can be sufficiently reinforced by the object, and a strong slab can be constructed.

  The mounting beam is H-shaped steel, and the slab construction method that welds the H-shaped steel flange to the lower surface of the metal plate is to weld the H-shaped steel flange to the lower surface of the metal plate, thereby strengthening the mounting beam to the deck plate. When the deck plate structure is installed in the upper floor space, the deck plate structure and the mounting beam are not released, and the deck plate structure is sufficient to sufficiently harden the cement. It can be reinforced and a strong slab can be constructed.

  According to the deck plate structure according to the present invention, the deck plate structure is fixed to a plurality of deck plates formed of a metal plate having a predetermined area and a reinforcing bar truss installed on the upper surface of the metal plate, and the lower surface of the metal plate. Since it is formed from H-shaped steel, not only the deck plate structure has sufficient strength, but also the bending tensile force and bending compressive force acting on the hardened cement product when the hardened cement product is placed on it, The hardened cement can be sufficiently reinforced so that the hardened cement can withstand the shearing force, and a strong slab can be constructed.

  An upper edge located above the upper surface of the metal plate, a pair of lower muscles located between the metal plate and the upper muscle, and an upper portion of the metal plate while repeatedly bending in a wave shape between the upper edge and the metal plate. A rebar truss is formed from a pair of latticed bars extending from the bottom to the bottom, the top of the lattice is welded to the top, the middle of the lattice is welded to the bottom, and the bottom of the lattice is the metal plate The deck plate structure welded to the upper surface includes a deck plate formed of a metal plate and a reinforcing bar truss, and the reinforcing bar truss includes a pair of upper bars, a pair of lower bars, and a pair of lattice bars that repeatedly bend in a wave shape in the vertical direction. Because the lattice has a function as a reinforcing bar that reinforces the space between the upper and lower bars, the deck plate structure not only has sufficient strength, but the cement when a hardened cement is placed on it. Bending acting on the product tension and bending compressive forces, a cement cured product can be sufficiently reinforced to cement cured can withstand shear forces, it is possible to build a solid slab. In the deck plate structure, the lower part of the lattice is hardened when the hardened cement material is placed on the deck plate structure, compared to the case where the metal plate is not present because the lower part of the lattice is in contact with the metal plate. It is not exposed from the object, and it is possible to prevent the lattice of the lattice from being corroded and the strength of the slab from being lowered due to the corrosion of the lattice by the lattice being exposed from the hardened cement.

  A pair of ridges projecting upward from the upper surface of the metal plate and extending in the first direction are formed on the metal plate so as to be located on both sides of the upper bar, and the second so that the lower part of the lattice bar is parallel to the upper surface of the metal plate. Deck plate structure that is bent in the direction and intersects the ridge at two points and is welded to the ridge with the portion of the lower part of the lattice that intersects the ridge spaced apart from the upper surface of the iron plate Because the welded portion between the metal strip ridges and the legs of the lattice bars is above the top surface of the iron plate, a slab that does not cause welding marks on the bottom surface of the metal plate as well as the top surface of the metal plate. Can be built. Since the slab construction method suppresses the flexibility of the metal plate, the slab construction method can prevent the metal plate from bending and distorting, and the metal plate and the lattice bars are not released, and the deck plate structure The hardened cement can be sufficiently reinforced by the object, and a strong slab can be constructed.

The perspective view of the deck plate shown as an example. FIG. 2 is an end view taken along line 2-2 in FIG. 1. The partial enlarged side view of a deck plate. The perspective view of the deck plate structure shown as an example. The expansion perspective view of the deck plate structure which shows the hook for suspension. The expansion perspective view of the connection jig formed in H section steel. The figure which shows an example of a framework construction process. The figure which shows an example of a framework construction process and a deck plate structure temporary placement process. The perspective view of the connection jig made in the main beam. The figure which shows an example of a deck plate structure installation process. The figure explaining the connection of a main beam and an attachment beam. The figure which shows the main beam and attachment beam after connection. The figure which shows the state after installing a deck plate structure in the space of the 2nd floor. The figure which shows the state after installing a deck plate structure in the space of the 2nd floor from the lower surface side of a metal plate. The figure explaining the bar arrangement process with respect to the deck plate structure installed in the space of the 2nd floor. The figure explaining the placement process with respect to the deck plate structure installed in the space of the 2nd floor. The figure which shows another example of a framework construction process. The figure which shows another example of a deck plate structure installation process. The figure which shows the state after installing a deck plate structure in the space of the 3rd floor. The figure explaining the bar arrangement process with respect to the deck plate structure installed in the space of the 3rd floor. The figure explaining the placement process with respect to the deck plate structure installed in the space of the 3rd floor.

  The details of the slab construction method and the deck plate structure 10 according to the present invention will be described below with reference to the accompanying drawings such as FIG. 1 which is a perspective view of the deck plate 11 shown as an example. 2 is an end view taken along line 2-2 of FIG. 1, and FIG. 3 is a partially enlarged side view of the deck plate 11. As shown in FIG. FIG. 4 is a perspective view of the deck plate structure 10 shown as an example, and FIG. 5 is an enlarged perspective view of the deck plate structure 10 showing the hanging hooks 13. FIG. 6 is an enlarged perspective view of the connecting jig 30 formed on the H-section steel 12.

  1-4, the vertical direction (first direction) is indicated by an arrow X (excluding FIG. 2), the horizontal direction (second direction) is indicated by an arrow Y (excluding FIG. 3), and the vertical direction is indicated by an arrow Z. 1 and 4, the vertical illustration of the deck plate 11 and the deck plate structure 10 is partially omitted. In the slab construction method, the slab 15 is constructed on the upper floor of the building 14. The deck plate structure 10 is formed of a plurality of deck plates 11 connected in the lateral direction, a plurality of H-section steels 12 (mounting beams), and a plurality of lifting hooks 13.

  As shown in FIG. 1, the deck plate 11 is made of a metal plate 16 (iron plate) that has a predetermined area and is long in the vertical direction, and two rebar trusses 17 that are located on the upper surface of the metal plate 16 and extend in the vertical direction. ing. The reinforcing bar trusses 17 are arranged at substantially equal intervals in the lateral direction on the upper surface 18 of the metal plate 16. Each rebar truss 17 is installed in the approximate center of one region and the approximate center of the other region among the regions obtained by dividing the metal plate 16 in the lateral direction. The reinforcing bar trusses 17 are formed of one upper bar 19 (iron bar), two (one pair) lower end bars 20 (iron bar), and two (one pair) lattice bars 21 (iron bar). The upper end bars 19, the lower end bars 20, and the lattice bars 21 are iron bars having a circular cross section made by extending iron. Note that the number of rebar trusses 17 is not limited at all, and three or more trusses 17 may be installed on the metal plate 16 depending on the area of the metal plate 16 and the size of the truss 17.

  The metal plate 16 has both side portions extending in the vertical direction and both end portions extending in the horizontal direction, and has a substantially flat upper surface 18 and lower surface 22. The metal plate 16 is plated on the upper and lower surfaces 18 and 22. The area of the metal plate 16 is not particularly limited, and the area can be freely set depending on the size of the slab 15 to be constructed. As shown in FIGS. 1 and 2, a first hook 23 that bends upward from the upper surface 18 of the metal plate 16 is formed on one side of the metal plate 16. A second hook 24 that is bent downward from the lower surface 22 of the plate 16 is formed. By engaging the first hook 23 and the second hook 24, the plurality of deck plates 11 can be coupled in the lateral direction.

  The metal plate 16 is formed with a plurality of ridges 25 protruding upward from the upper surface 18 thereof. The ridges 25 are positioned on both lateral sides of the upper end stripe 19 so as to sandwich the upper end stripe 19, and extend in the vertical direction on the upper surface 18 of the metal plate 16. For each reinforcing bar truss 17, two protruding ridges 25 are formed in the horizontal direction. The ridges 25 are formed by bending a portion of the metal plate 16 inward in the lateral direction, partially folding a portion of the metal plate 16 upward from the upper surface 18, and forming the lower surfaces 22 of the metal plates 16 at the mountain-folded portions. It is made by pressure welding without a gap.

  These ridges 25 have a predetermined height dimension L in the vertical direction, and as shown in FIG. 3, the side surface thereof has a strip shape, and the shape viewed from above has a substantially linear shape. Although there is no limitation in particular in the height dimension L of the up-down direction of the protruding item | line 25, the preferable range of the height dimension L is 5-50 mm. A concave portion 26 that is recessed from the upper end thereof toward the upper surface 18 of the metal plate 16 is formed on the convex strip 25. The recess 26 does not reach the upper surface 18 of the metal plate 16 and is spaced apart from the upper surface 18 of the metal plate 16 by a predetermined dimension. Therefore, a part of the protrusion 25 extends between the upper surface 18 of the metal plate 16 and the recess 26.

  The upper end line 19 extends straight from the upper surface 18 of the metal plate 16 in a vertical direction with a predetermined distance therebetween. The upper end line 19 is disposed between both end portions of the metal plate 16. The lower end stripe 20 extends straight from the upper surface 18 of the metal plate 16 upward in a vertical direction with a predetermined distance therebetween. These lower end bars 20 are located below the upper end bars 19 and on both lateral sides of the upper end bars 19, and are disposed between the upper surface 18 and the upper end bars 19 of the metal plate 16 and between both ends of the metal plate 16. ing.

  The lattice line 21 is located between the metal plate 16 and the upper end line 19 and extends in the vertical direction while repeatedly bending (undulating) in the vertical direction. The lattice stripes 21 are arranged symmetrically in the lateral direction with the upper end stripe 19 interposed therebetween. The lattice muscle 21 has an upper part and a lower part, and an intermediate part extending between the upper and lower parts. As shown in FIG. 2, the lattice stripe 21 is inclined at a predetermined angle with respect to the metal plate 16 so as to spread laterally from the upper part toward the lower part.

  The upper part of the lattice bar 21 is arc welded upward, and is spot-welded to the upper end bar 19 in a state where it abuts on both lateral sides of the upper end bar 19. The lower portion of the lattice 21 is bent outward in the lateral direction so as to be parallel to the upper surface 18 of the metal plate 16 to form a leg 27. The leg 27 forms an arc outward in the lateral direction, and a part of the leg 27 protrudes laterally outward from the ridge 25 and intersects the ridge 25 at two points. A portion of the leg 27 of the lattice line that intersects the ridge 25 is spotted in the recess 25 while being fitted into the recess 25 formed in the ridge 25 and spaced upward by a predetermined dimension from the upper surface 18 of the metal plate 16. Welded. The intermediate portions of the lattice bars 21 are located inside the lower end bars 20, and a portion of the intermediate portion that intersects the lower end bars 20 is spot-welded to the lower end bars 20.

  Note that the leg 27 does not have to be formed below the lattice muscle 21 without bending the lower portion of the lattice muscle 21. In this case, the lower part of the lattice 21 is spot welded to the ridge 25. Further, the ridges 25 may not be formed on the metal plate 16. In this case, the legs 27 of the lattice bars 21 are spot-welded to the upper surface of the metal plate 16. Alternatively, the lower part of the lattice stripe 21 is spot welded to the upper surface of the metal plate 16.

  The H-shaped steel 12 (mounting beam) is fixed to the lower surface 22 of the metal plate 16 and extends in the lateral direction. One flange 28 of the H-shaped steel 12 is welded to the lower surface 22 of the metal plate 16. As shown in FIG. 5, a connecting jig 30 (second connecting jig) in which a plurality of connecting holes 29 (second connecting holes) arranged in the vertical direction are drilled is formed at both ends of the H-shaped steel 12 in the horizontal direction. It is made. As shown in FIG. 4, the lifting hook 13 is positioned immediately above the H-section steel 12 on the upper surface 18 of the metal plate 16 and is detachably attached to the flange 28 of the H-section steel 12. The lifting hook 13 is formed of an anchor 31 that penetrates the metal plate 16 and penetrates the flange 28 of the H-shaped steel 12, and a hook body 32 that is connected to the anchor 31 and is located on the upper surface 18 of the metal plate 16. Yes. The anchor 31 and the hook body 32 do not fall off the H-section steel 12 or the metal plate 16 in a steady state.

  In the deck plate structure 10, there is no particular limitation on the thicknesses of the upper end muscle 19, the lower end muscle 20, and the lattice muscle 21 of the reinforcing bar truss 17, and the upper end muscles according to the size of the slab 15 to be constructed and the strength required for the slab 15. It is possible to freely set the thicknesses of 19, lower end muscles 20, and lattice muscles 21. The upper muscle 19, the lower muscle 20 and the lattice 21 are made of iron, but can be made of a metal other than iron. Further, when iron is used for the upper muscle 19, the lower muscle 20, and the lattice 21, the upper muscle 19, the lower muscle 20, and the lattice 21 may be subjected to anticorrosion treatment such as plating. There is no particular limitation on the number of times the bending of the lattice 21 per unit length (m) is repeated and the inclination angle of the lattice 21 with respect to the metal plate 16, and the number of bendings and the inclination angle can be freely set. Although the H-shaped steel 12 is used as the mounting beam, steel materials of other shapes (I-shaped steel, T-shaped steel, angle steel, etc.) can be used as the mounting beam.

  FIG. 7 is a diagram illustrating an example of a framework construction process, and FIG. 8 is a diagram illustrating an example of a framework construction process and a deck plate structure temporary placement process. FIG. 9 is a perspective view of a connecting jig 39 formed on the main beam 34. In the slab construction method, a frame construction process, a deck plate structure assembly process, a hook installation process, a deck plate structure temporary placement process, a deck plate structure installation process, a bar arrangement process, and a placement process are performed. The deck plate structure assembly process, the hook installation process, and the deck plate structure temporary placement process are performed simultaneously (in parallel) with the framework construction process.

  In the framework construction process, as shown in FIGS. 7 and 8, a plurality of pillars 33 extending in the vertical direction are installed at the planned construction place of the building 14, and the main beam 34 is constructed above the pillars 33. The framework 35 of the object 14 is constructed. H-beam is used for the main beam 34. As shown in FIG. 9, a plurality of connecting holes 38 (first connecting holes) arranged in the vertical direction are formed in the H-shaped steel flange 36 and the web 37 of the main beam 34 facing each other. A tool 39 (first connecting jig) is fixed by welding. In addition to the H-shaped steel, other shapes of steel materials (I-shaped steel, T-shaped steel, angle steel, etc.) can be used for the main beam 34, and reinforced concrete or reinforced steel concrete can be used.

  An example of an assembly procedure of the deck plate structure 10 in the deck plate structure assembly process will be described as follows. A metal plate 16 having a predetermined area, one upper end line 19 extending in a straight line, two lower end lines 20 extending in a straight line, and two lattice lines 21 that repeatedly undulate in a wave shape are prepared. One side portion of the metal plate 16 is bent toward the upper surface 18 to make the first hook 23, and the other side portion of the metal plate 16 is bent toward the lower surface 22 to make the second hook 24.

  A leg 27 is formed by bending the lower portion of the lattice muscle 21 outward in the lateral direction. Next, the upper end bars 19 and the upper portions of the lattice bars 21 are spot-welded, and the lower end bars 20 and the intermediate portions of the lattice bars 21 are spot-welded to make the reinforcing bar truss 17. In the reinforcing bar truss 17, the lattice bars 21 are inclined so as to spread laterally from the upper part toward the lower part.

  Next, a pair of ridges 25 projecting upward from the upper surface 18 of the metal plate 16 and extending in the vertical direction are formed on the metal plate 16. The reinforcing bar truss 17 is placed on the upper surface 18 of the metal plate 16 so that the upper end bars 19 of the reinforcing bar truss 17 are parallel to the ridges 25 and the legs 27 of the lattice bars 21 are positioned on the ridges 25. When the leg 27 of the lattice stripe 21 is placed on the ridge 25, the leg 27 intersects the ridge 25 at two locations, and the ridge 25 is positioned on both sides of the upper end stripe 19. The deck plate 11 is formed by spot welding the two portions of the leg 27 of the lattice stripe 21 that intersect with the protrusion 25 to the protrusion 25 in a state of being spaced apart from the upper surface 18 of the metal plate 16.

  When the leg 27 is not made at the lower portion of the lattice 21 without bending the lower portion of the lattice 21, the lower portion of the lattice 21 is spot-welded to the ridge 25. Further, when the protrusion 25 is not formed on the metal plate 16, the leg 27 of the lattice 21 is spot-welded to the upper surface of the metal plate 16. Alternatively, spot welding is performed on the lower surface of the lattice stripe 21 on the upper surface of the metal plate 16.

  In the spot welding, although not shown in the drawing, the upper muscle 19, the lower muscle 20, and the lattice 21 are sandwiched between electrodes, and a high voltage is applied to the electrodes to heat and melt the upper muscle 19, the lower muscle 20, and the lattice 21. After that, the upper end muscle 19, the lower end muscle 20, and the lattice muscle 21 are naturally cooled, and the upper end muscle 19, the lower end muscle 20, and the lattice muscle 21 are welded to each other at the welding point. Further, in order to weld the portion of the leg 27 of the lattice line 21 that intersects the ridge 25 and the ridge 25, after the portion is placed on the ridge 25, the metal plate 16 is extended. An electrode is disposed on the lower surface 22 and an electrode is disposed above the portion. Next, the metal plate 16 and the portion of the leg 27 are sandwiched between the electrodes, and a high voltage is applied to the electrode to heat and melt the ridges 25 and the portion formed on the metal plate 16, and then the metal plate 16 and the portion Are naturally cooled, and the portions and the ridges 25 are welded to each other at the welding points. Here, when the ridges 25 are heated by the electrodes, the ridges 25 melt from the upper ends thereof toward the upper surface 18 of the metal plate 16, and the recesses 26 are formed in the ridges 25, and the recesses 26 and the leg 27 portions Are welded together.

  After making a plurality of deck plates 11 by the above procedure, the first hooks 23 of one deck plate 11 and the second hooks 24 of the other deck plate 11 are engaged, and the plurality of deck plates 11 are moved in the horizontal direction. Connect to After connecting the plurality of deck plates 11, two H-shaped steels 12 (mounting beams) extending in the lateral direction intersecting the extending direction of the metal plate 16 and the reinforcing bar truss 17 are arranged on the lower surface 22 of the metal plate 16. The H-shaped steels 12 are arranged in parallel in the vertical direction, and one flange 28 abuts on the lower surface 22 of the metal plate 16. After the H-section steel 12 is disposed on the lower surface 22 of the metal plate 16, the metal plate 16 and the flange 28 of the H-section steel 12 are welded, and the metal plate 16 and the H-section steel 12 are welded to form the deck plate structure 10. make. In FIG. 8, the two H-shaped steels 12 are fixed to the lower surface 22 of the metal plate 16, but the number of the H-shaped steels 12 is not limited to the number shown in the drawing, and the area of the deck plate structure 10 Thus, three or more H-shaped steels 12 may be welded to the lower surface 22 of the metal plate 16.

  After the deck plate structure 10 is made, a hook installation process is performed. An example of the installation procedure of the lifting hook 13 in the hook installation process will be described as follows. Four lifting hooks 13 are arranged on the upper surface 18 of the metal plate 16 immediately above the H-section steel 12. The lifting hooks 13 are determined in consideration of the weight and center of gravity of the deck plate structure 10 and their mounting positions are determined so that the vertical and horizontal separation distances thereof are substantially the same. It is disposed immediately above the flange 28. After the lifting hook 13 is disposed, marking is made at a location where a through-hole through which the anchor 31 of the hook 13 is inserted is made, and the through-hole is drilled at the marked location with a drill. The through hole passes through the metal plate 16 and the flange 28 of the H-section steel 12. After drilling the through hole, the anchor 31 of the lifting hook 13 is inserted into the through hole, the anchor 31 is attached to the flange 28 of the H-section steel 12, and the hook body 32 is positioned on the upper surface 18 of the metal plate 16. The hook body 32 is connected to the anchor 31. In the lifting hook 13, by separating the anchor 31 and the hook body 32, the anchor 31 can be extracted from the through hole of the H-section steel 12 or the metal plate 16, and the hook 13 is removed from the deck plate structure 10. Can be removed.

  After the deck plate structure assembling process and the hook setting process, the deck plate structure temporary placing process is performed. An example of the temporary placement procedure of the deck plate structure 10 in the deck plate structure temporary placement step will be described as follows. The wire rope 40 is hung on the hook body 32 of the lifting hooks 13 and the wire rope 40 is hung on the ball hook 41 of the crane car, and then the deck plate structure 10 is lifted by the crane of the crane car (see FIG. 10). The object 10 is lowered to a temporary place on the ground near the planned construction site of the building 14. Further, the next deck plate structure 10 is lifted by a crane, and the structure 10 is stacked on the structure 10 that has been temporarily raised (see FIG. 8). In the overlapping deck plate structure 10 stacked vertically, the flange of the H-section steel 12 of the structure 10 positioned above abuts on the upper end bar 19 of the structure 10 positioned below. In the deck plate structure temporary placing step, the deck plate structures 10 are made by the number of the upper floors of the building 14 to be built, and the structures 10 are stacked in a temporary place.

  FIG. 10 is a diagram illustrating an example of the deck plate structure installation process, and FIG. 11 is a diagram illustrating the connection between the main beam 34 (H-shaped steel) and the mounting beam 12 (H-shaped steel). FIG. 12 is a diagram showing the main beam 34 and the mounting beam 12 after being connected, and FIG. 13 is a diagram showing a state after the deck plate structure 10 is installed in the space 42 on the second floor. FIG. 14 is a view showing a state after the deck plate structure 10 is installed in the space 42 on the second floor from the lower surface 22 side of the metal plate 16.

  After the frame construction process, the deck plate structure assembly process, the hook installation process, and the deck plate structure temporary placement process are completed, the deck plate structure installation process is performed. An example of the installation procedure of the deck plate structure 10 in the deck plate structure installation process will be described as follows. After constructing the frame 35 of the lowest floor (second floor) of the upper floors by the framework construction process, as shown in FIGS. 10 and 13, the deck plate structure stacked in the temporary placement place by the deck plate structure temporary placement process, as shown in FIGS. The uppermost structure 10 of the objects 10 is arranged in a space 42 on the upper floor (second floor) surrounded by the pillar 33 and the main beam 34. Specifically, the wire rope 40 is hung on the hook main body 32 of the lifting hook 13 attached to the deck plate structure 10, the wire rope 40 is hung on the ball hook 41 of the crane car, and then the deck of the crane car is used. The plate structure 10 is lifted, the structure 10 is moved to the space 42, and the structure 10 is arranged in the space 42 on the second floor.

  In the deck plate structure installation step, as shown by an arrow in FIG. 11, the deck plate structure 10 is gradually lowered from above the space 42 and is connected to the main beam 34 (first connection jig) 39. And a connecting jig 30 (second connecting jig) formed on the mounting beam 12, and a connecting hole 38 (first connecting hole) drilled in the connecting jig 39 and a connecting jig 30 are drilled. The connecting holes 29 (second connecting holes) are made to coincide with each other. After matching the connecting holes 29 and 38, as shown in FIG. 12, bolts 43 are inserted into the connecting holes 29 and 38, and nuts (not shown) are screwed into the bolts 43 to connect the connecting jigs. 29 and 38 are firmly connected.

  When connecting the connecting jigs 29 and 38 to each other, although not shown in the drawing, the operator gets on the lift from the ground, and the operator faces the lower surface of the deck plate structure 10 (the lower surface 22 of the metal plate 16) by the lift. After being lifted up, the operator inserts the bolt 43 into the connecting holes 29, 38 and screws the nut into the bolt 43. In this way, in the deck plate structure installation process, the operator performs a connecting operation below the deck plate structure 10 and the operator does not get on the deck plate structure 10 to perform the connecting operation.

  When the connecting jigs 29 and 38 are connected to each other, the deck plate structure 10 is installed in the space 42 on the second floor as shown in FIGS. After the deck plate structure 10 is installed in the space 42 on the second floor, the anchor 31 and the hook body 32 of the lifting hook 13 are separated, and the anchor 31 is pulled out from the through hole of the H-shaped steel 12 or the metal plate 16 to 13 is removed from the structure 10. After the anchor 31 is pulled out from the through hole, the through hole is closed by a predetermined filling means.

  FIG. 15 is a diagram for explaining a bar arrangement process for the deck plate structure 10 installed in the space 42 on the second floor, and FIG. 16 shows a process for placing the deck plate structure 10 installed on the space 42 on the second floor. It is a figure explaining. After the deck plate structure installation process is completed, a bar arrangement process and a placing process are performed. The bar arrangement process and the placing process will be described as follows. In the bar arrangement process, the horizontal stripes 44 are arranged at or near the top of the top muscle 19 and at the intersection of the top muscle 19 and the top of the lattice muscle 21, and the top muscle at all intersections with the top of the top muscle 19. 19 is connected to the horizontal stripes 44. A tie wire (not shown) is used to connect the upper and lower bars 19 and 44. The horizontal stripes 44 have the same length in the horizontal direction, the horizontal stripes 44 adjacent to each other in the vertical direction have the same distance, and the horizontal stripes 44 are arranged in parallel in the vertical direction at equal intervals.

  In the bar arrangement process, in addition to the upper portion of the upper end muscle 19, a horizontal bar 44 is disposed below or in the vicinity of the upper end muscle 19 and at the intersection of the upper end muscle 19 and the upper portion of the lattice muscle 21. The transverse line 44 may be connected to the upper end line 19 by using a tie wire at the intersection with the line. Moreover, it is arrange | positioned between the upper part or the lower part of the upper end muscle 19, and the upper part of the lattice muscle 21 adjacent to the vertical direction, and a crossing line with the upper part or the lower part of the upper end muscle 19 is used for the upper end muscle 19 using a binding line. The horizontal stripes 44 may be connected. There is no limitation in the number of the horizontal stripes 44, and the number and thickness of the horizontal stripes 44 can be determined according to the size of the slab 15 to be constructed and the required strength. When iron is used for the horizontal bars 44, the horizontal bars 44 may be subjected to rust prevention treatment such as plating.

  After arranging the horizontal bars 44 by the bar arrangement process, the placing process is performed. In the placing step, as shown in FIG. 15, concrete 45 (hardened cement) is placed on the upper surface 18 of the metal plate 16 from above the deck plate structure 10. When the placed concrete 45 is cured for a predetermined period, the slab 15 is completed in the space 42 on the second floor.

  FIG. 17 is a diagram illustrating another example of the framework construction process, and FIG. 18 is a diagram illustrating another example of the deck plate structure installation process. FIG. 19 is a diagram illustrating a state after the deck plate structure 10 is installed in the space 42 on the third floor, and FIG. 20 illustrates a bar arrangement process for the deck plate structure 10 installed in the space 42 on the third floor. It is a figure to do. FIG. 21 is a diagram illustrating a placing process for the deck plate structure 10 installed in the space 42 on the third floor.

  After the slab 15 is constructed in the space 42 on the lowest floor (second floor) among the upper floors of the building 14, the slab 15 is constructed in the space 42 on the floor (third floor) immediately above it. In this case, since a plurality of deck plate structures 10 to which hooks 13 are already attached are stacked in the temporary storage place, only the frame construction process, the deck plate structure installation process, the bar arrangement process, and the placing process are performed. However, the deck plate structure assembly process, the hook installation process, and the deck plate structure temporary placement process are not performed.

  In the framework construction process, as shown in FIG. 17, pillars 33 are installed (added) immediately above the already constructed second floor slab 15, and the third-floor main beam 34 (H-section steel) is attached to these pillars 33. Install the 3rd-frame framework 35. A connecting jig 39 (first connecting hole) in which a plurality of connecting holes 38 (first connecting holes) arranged in the vertical direction are formed in the H-shaped steel flange 36 and the web 37 facing each other in the main beam 34 on the third floor. 1 connecting jig) is fixed by welding (see FIG. 9).

  After the frame construction process is completed, the deck plate structure installation process is performed. After constructing the frame 35 of the third floor among the upper floors by the framework construction process, as shown in FIG. 18, from the top of the deck plate structure 10 stacked in the temporary placement place by the deck plate structure temporary placement process. The second structure 10 is arranged in a space 42 on the third floor surrounded by the pillar 33 and the main beam 34. Note that the deck plate structure 10 located at the top is already installed in the space 42 on the second floor, and does not exist in the temporary storage place. The wire rope 40 is hung on the hook body 32 of the lifting hook 13 attached to the deck plate structure 10, the wire rope 40 is hung on the ball hook 41 of the crane car, and then the deck plate structure 10 is moved by the crane of the crane car. The structure 10 is lifted, the structure 10 is moved to the space 42 on the third floor, and the structure 10 is arranged in the space 42 on the third floor.

  In the deck plate structure installation step, the deck plate structure 10 is gradually lowered from above the space 42 (see FIG. 11), and the connecting jig 39 (first connecting jig) fixed to the main beam 34 and the mounting beam 12 are mounted. The connecting jig 30 (second connecting jig) formed on the connecting jig 39 is brought into contact with the connecting jig 39, the connecting hole 38 (first connecting hole) drilled in the connecting jig 39, and the connecting hole 29 drilled in the connecting jig 30. (Second connecting hole) is matched.

  After matching the connecting holes 29 and 38, the bolts 43 are inserted into the connecting holes 29 and 38, and nuts are screwed into the bolts 43 to firmly connect the connecting jigs 29 and 38 (FIG. 12). reference). When the connection jigs 29 and 38 are connected to each other, as described above, the worker gets on the lift from the ground, and the worker moves toward the lower surface of the deck plate structure 10 (the lower surface 22 of the metal plate 16) by the lift. After being lifted, the operator inserts the bolt 43 into the connecting holes 29 and 38 and screws the nut into the bolt 43.

  When the connecting jigs 29 and 38 are connected to each other, the deck plate structure 10 is installed in the space 42 on the third floor as shown in FIG. After the deck plate structure 10 is installed in the space 42 on the third floor, the anchor 31 and the hook main body 32 of the lifting hook 13 are separated, and the anchor 31 is pulled out from the through-hole of the H-shaped steel 12 or the metal plate 16. 13 is removed from the structure 10. After the anchor 31 is pulled out from the through hole, the through hole is closed by a predetermined filling means.

  After the deck plate structure installation process is completed, the bar arrangement process and the placing process are performed again. In the bar arrangement process, as shown in FIG. 20, the horizontal stripes 44 are arranged at the upper portion of the upper end muscle 19 and at the intersection of the upper end muscle 19 and the upper portion of the lattice muscle 21 or in the vicinity thereof. The horizontal bars 44 are connected to the upper end bars 19 using binding lines (not shown) at all intersections. After arranging the horizontal bars 44 by the bar arrangement process, the placing process is performed. In the placing step, concrete 45 (hardened cement) is placed on the upper surface 18 of the metal plate 16 from above the deck plate structure 10 as shown in FIG. When the placed concrete 45 is cured for a predetermined period, the slab 15 is completed in the space 42 on the third floor. After the slab 15 on the third floor is completed, the slab 15 is constructed in the space 42 on the upper floor (fourth floor) by the same procedure as the construction of the slab 15 on the second and third floors.

  In the slab construction method, the deck plate structure 10 is lifted from a temporary placement place on the ground, and the structure 10 is arranged in the space 42 on the upper floor surrounded by the pillar 33 and the main beam 34, while the main beam 34 is connected. Since the deck plate structure 10 is installed in the space 42 by connecting the tool 39 (first connecting jig) and the connecting jig 30 (second connecting jig) of the mounting beam 12, the conventional slab construction method is used. In addition, it is not necessary for the worker to ride on the deck plate one by one and weld the end and side of the deck plate to the main beam, and it is not necessary to lay a safety net. In addition, the deck plate structure 10 can be installed in the space 42 on the upper floor.

  Since the slab construction method can execute the deck plate structure assembly process, the hook installation process, and the deck plate structure temporary placement process simultaneously with the construction of the skeleton 35, a plurality of slab construction methods can be used regardless of the progress of the construction of the skeleton 35. The deck plate structure 10 can be assembled, and a plurality of structures 10 can be made in advance in parallel with the construction of the framework 35.

  In the slab construction method, even if the construction of the skeleton 35 is delayed, the deck plate structure 10 can be quickly installed in the space 42 on the upper floor immediately after the construction of the skeleton 35 is completed, and the slab 15 is constructed in a short construction period. can do. In the slab construction method, the deck plate structure 10 is installed in order from the space 42 of the lowest floor (second floor) among the upper floors of the building 14, and after the structure 10 is installed on the floor, the floor immediately above it is installed. While constructing the (3rd floor) frame 35 and installing the stacked structures 10 on the floor directly above, the assembly company of the structure 10 installs the structure 10 according to the progress of the construction of the framework 35. There is no need to assemble, and the assembler may assemble the required number of structures 10 in advance and stack the structures 10 on the ground in the vicinity of the building 14, and the assembler will perform assembly work and lifting hook attachment work. After carrying out the stacking work, it is possible to immediately start work on the next site and improve the turnover rate of the work of the assembler.

  In the slab construction method and the deck plate structure 10 used in this method, the deck plate 11 is formed of a metal plate 16 and a reinforcing bar truss 17, and the reinforcing bar truss 17 is wavy in the vertical direction with the upper bar 19 and the pair of lower bar bars 20. The deck plate structure 10 has a sufficient strength because it includes a pair of lattice muscles 21 that repeatedly bend, and the lattice muscle 21 has a function as a reinforcement reinforcement that reinforces between the upper end muscle 19 and the lower end muscle 20. Not only can the concrete 45 be sufficiently reinforced so that the concrete 45 can withstand the bending tensile force, bending compressive force, and shear force acting on the concrete 45 when the concrete 45 is placed on the structure 10. A strong slab 15 can be constructed.

  The slab construction method and the deck plate structure 10 used in this method are such that the legs 27 of the lattice bars 21 are welded to the ridges 25 of the metal plate 16 and the structure 10 is made of concrete as compared with the case where the metal plate 16 does not exist. 45, the lower portion of the lattice 21 is not exposed from the concrete 45, and the strength of the slab 15 due to the corrosion of the lattice 21 due to the lattice 21 being exposed from the concrete 45 or the corrosion of the lattice 21 Decline can be prevented.

  In the slab construction method and the deck plate structure 10 used in this method, the welded portion between the ridges 25 of the metal plate 16 and the legs 27 of the lattice bars 21 is above the upper surface 18 of the metal plate 16. It is possible to construct the slab 15 in which no trace is generated not only on the upper surface 18 of the 16 but also on the lower surface 22 of the metal plate 16. The slab construction method and the deck plate structure 10 used in this method can prevent the metal plate 16 from being bent and distorted because the ridges 25 suppress the flexibility of the metal plate 16. The fixation with the line 21 is not released, and the concrete 45 can be sufficiently reinforced by the structure 10, and a strong slab 15 can be constructed.

10 Deck plate structure 11 Deck plate 12 H-section steel (mounting beam)
DESCRIPTION OF SYMBOLS 13 Hanging hook 14 Building 15 Slab 16 Metal plate 17 Reinforcing bar truss 18 Upper surface 19 Upper bar 20 Lower bar 21 Lattice bar 22 Lower surface 25 Projection 26 Recess 27 Leg 29 Connection hole (2nd connection hole)
30 Connecting jig (second connecting jig)
33 Column 34 Main beam 35 Frame 38 Connection hole (first connection hole)
39 Connecting jig (first connecting jig)
42 Space 44 Horizontal stripe 45 Concrete (hardened cement)

Claims (11)

In the slab construction method to construct the slab on the upper floor of the building,
The slab construction method includes a frame construction process in which a plurality of pillars extending in the vertical direction are installed, a main beam is installed above the pillars, and the framework of the building is constructed. A second direction that intersects the first direction with a plurality of deck plates that are formed from a metal plate having an area that is long in the first direction and a reinforcing bar truss installed on the upper surface of the metal plate and extending in the first direction. A deck plate structure assembling step for assembling a deck plate structure having a predetermined area by fixing an attachment beam extending in the second direction to the lower surface of the metal plate, and lifting the deck plate structure to the pillar. The deck plate structure is connected to the main beam and the mounting beam via a predetermined connecting means while the deck plate structure is disposed in the space on the upper floor surrounded by the main beam and the main beam. Slab construction method, wherein a and a deck plate structure installation step of installing said space.   The slab construction method includes a deck plate structure temporary placing step of stacking the plurality of assembled deck plate structures in the vertical direction on the ground in parallel with the framework construction step after the deck plate structure assembling step. In the framework construction process, after the deck plate structure is installed on a predetermined floor by the deck plate structure installation process, the framework of the floor immediately above is installed, and in the deck plate structure installation process, the deck is The slab construction method according to claim 1, wherein the deck plate structures stacked in the plate structure temporary placing step are installed in order from the top for each predetermined floor.   The slab construction method arranges a lifting hook for the deck plate structure immediately above the mounting beam on the upper surface of the metal plate, in parallel with the framework construction process after the deck plate structure assembly process, The slab construction method according to claim 1 or 2, further comprising a hook installation step of detachably attaching a lifting hook to the attachment beam.   In the slab construction method, after the deck plate structure installation step, a plurality of transverse bars extending in the second direction while being spaced apart from each other by a predetermined dimension in the first direction are connected to a reinforcing bar truss of the deck plate through a binding wire. The slab construction method according to any one of claims 1 to 3, comprising a bar arranging step and a placing step of placing a hardened cement material on the upper surface of the metal plate after the bar arranging step.   The connecting means for connecting the main beam and the mounting beam includes a first connecting jig in which a plurality of first connecting holes arranged in the vertical direction are drilled and fixed to a side portion of the main beam, and the vertical direction A plurality of second connection holes arranged in parallel to each other and formed on a second connection jig fixed to both ends of the mounting beam. In the deck plate structure installation step, a first of the first connection jig is formed. A bolt is inserted into the connecting hole while a connecting hole is matched with the second connecting hole of the second connecting jig, and a nut is screwed into the bolt to connect the main beam and the mounting beam. The slab construction method according to any one of claims 1 to 4.   In the slab construction method, an upper end line extending upward from the upper surface of the metal plate and extending in the first direction, and a pair of lower ends extending between the metal plate and the upper end line and extending in the first direction. The rebar truss is composed of a reinforcing bar and a pair of lattice bars extending in the first direction while repeatedly bending in a wavy shape between the metal plate and the upper end bar and extending from the upper part to the lower part. Forming an upper portion of the lattice line to the upper end, welding an intermediate portion of the lattice line to the lower end, and welding a lower portion of the lattice line to the upper surface of the metal plate to form the deck plate. The slab construction method according to any one of claims 1 to 5 to manufacture.   In the slab construction method, a pair of ridges protruding upward from the upper surface of the metal plate and extending in the first direction are formed on the metal plate so as to be located on both sides of the upper end muscle, and a lower portion of the lattice muscle is formed. A leg is formed by bending in the second direction so as to be parallel to the upper surface of the metal plate, and a portion of the leg that intersects the convex stripe is spaced upward from the upper surface of the metal plate. The slab construction method according to claim 6, wherein the deck plate is manufactured by welding to a slab.   The slab construction method according to any one of claims 1 to 7, wherein the mounting beam is an H-shaped steel, and a flange of the H-shaped steel is welded to a lower surface of the metal plate in the deck plate structure assembling step. . In the deck plate structure used to construct the slab on the upper floor of the building,
The deck plate structure is formed of a metal plate having a predetermined area and a reinforcing bar truss installed on the upper surface of the metal plate and extending in the first direction, and is connected in a second direction intersecting the first direction. A deck plate extending in the second direction while being spaced apart by a predetermined dimension in the first direction and welded to the lower surface of the metal plate, and directly above the H-shaped steel on the upper surface of the metal plate A connecting jig is formed at both ends of the H-shaped steel, which is formed from a lifting hook that is positioned and detachably attached to the H-shaped steel and has a plurality of connecting holes arranged in the vertical direction. Deck plate structure characterized by   The reinforcing bar truss is located above the upper surface of the metal plate and extends in the first direction, and a pair of lower bars extending between the metal plate and the upper bar and extending in the first direction. And a pair of lattice muscles extending in the first direction while repeatedly bending in the shape of a wave between the metal plate and the upper end muscles and spreading from the upper part toward the lower part. 10. The deck plate according to claim 9, wherein an upper portion of the lattice bar is welded to the upper end bar, an intermediate portion of the lattice bar is welded to the lower end bar, and a lower portion of the lattice bar is welded to the upper surface of the plate member. Structure.   A pair of ridges projecting upward from the upper surface of the metal plate and extending in the first direction are formed on the metal plate so as to be located on both sides of the upper muscle, and a lower portion of the lattice line is formed on the metal plate. Bending in the second direction so as to be parallel to the upper surface and intersecting the ridge at two points, the portion of the lower part of the lattice that intersects the ridge is upward from the upper surface of the metal plate. The deck plate structure according to claim 10, wherein the deck plate structure is welded to the ridges in a separated state.

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