JP2000017764A - Method for fixing pc floor panel to steel beam of building skeleton and pc floor body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for fixing PC floor panels to a steel beam of a building skeleton wherein work is done for fixing the PC floor panels to the steel beam of the building body in a well constructive manner and a structure of floor panels having structural characteristics equal to those of a structure of deck plate floor panels is obtained, and provide such a PC floor panel. SOLUTION: Portions near the edges of pairs of PC floor panels are placed on a steel beam 4 so that a placement space Sp1 can be formed between the end faces of the sides B of the opposed PC floor panels, joint portions 12a1 of a number of joint reinforcements 12a embedded at spaces in the PC floor panels are protruded from the wavy end faces of the sides B into the space Sp1, joint portions 12a1 almost in parallel are joined to each other so that the joint portion 12a1 of one PC floor panel 10 comes near to and almost in parallel to the joint portion 12a1 of the other PC floor panel, the joint portions 12a1 almost in parallel are joined to each other and a number of studs Sd1 having heads on the upper face of the steel beam are embedded therein at spaces to place concrete in a placement space for joining the steel beam to the PC floor panels. A structure of floor panels having structural characteristics equal to those of a structure of deck plate floor panels is thus easily obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of fixing a precast concrete floor plate (hereinafter referred to as PC floor plate) to a steel beam of a building frame and a PC floor plate.

[0002]

2. Description of the Related Art Conventional methods for fixing a PC floor panel to a steel beam of a building frame and PC floor panels include, for example, the following. The ends of the two PC floorboards are placed on a steel beam and their end faces are opposed to each other, and a joint portion protruding from the end faces of the reinforcing bars embedded in each floorboard is positioned in a concrete casting space between the end faces. , Concrete is cast in the casting space and the PC floorboards are joined to each other.
C In the method of fixing floor plates, stud pins having heads are planted on the upper surface of the steel beams at intervals in the longitudinal direction of the steel beams, and a joint portion of a reinforcing bar projecting from an end surface of each floor plate is viewed in plan. Into a U-shape, and the U
A method of fitting each of the letter-shaped joining portions to the stud pins, placing concrete in the placement space, and fixing each PC floor panel to a steel beam (for example, Japanese Patent Application Laid-Open No. 9-158)
According to this method, the end of the PC floor plate has a convex shape having a rectangular projection in the center in plan view, and the convex-shaped surface in plan view has minute irregularities. Face. The ends of the two PC floorboards to be joined are separated by a plurality of 2 in plan view.
PC floorboards have also been proposed, in which the bases of an equilateral triangle are arranged in a straight line and are continuous to form a wave shape as a whole (for example,
Japanese Patent Laid-Open No. Hei 9-158377).

[0003]

The above-described conventional PC
The method of fixing the floor plate is such that a stud pin is planted on the upper surface of the steel beam at intervals in the longitudinal direction of the steel beam, and is buried in each floor plate and a part thereof is projected from the end surface of each floor plate. The shape of the joining part is U-shaped in a plan view, the U-shaped joining parts protruding from each floor plate are fitted to the stud pins, and concrete is poured into the placing space, and each PC Since the floor panel is fixed to the steel beam, the stress acting on each PC floor panel can be transmitted to the steel beam via the stud pin and the surrounding concrete, and even after the concrete around the stud pin yields, the U Since the letter-shaped joining portions are fitted on the stud pins, there is no concern that each PC floor plate will come off the steel beam. However, the method of fixing the PC floorboard described above does not particularly enhance the joining strength between the end of the PC floorboard and the steel beam. Said P
The C floor panel has a large in-plane shear strength because the bottom sides of a plurality of isosceles triangles are arranged in a straight line and are continuous, and have a large in-plane shear strength. However, in the means for attaching this PC floor panel to a steel beam. No special ingenuity has been applied.
The problem to be solved by the present invention is to provide a method of fixing a PC floor plate to a steel beam of a building skeleton which does not have the above-mentioned disadvantages of the prior art, and to provide a PC floor plate, in other words, a steel beam of a PC frame of a building skeleton. The workability of the work of fixing to the floor is good, and a deck plate structure having the same structural characteristics as a deck plate floor plate structure in which a deck plate is arranged on a steel beam of a building frame and a reinforced concrete floor plate is constructed on the deck plate. An object of the present invention is to provide a method for fixing a PC floor plate to a steel beam of a building frame obtained and a PC floor plate.

[0004]

According to the method of fixing a PC floor panel to a steel beam of a building frame according to the present invention, a PC floor panel is formed into a rectangular shape having a long side portion and a short side portion in plan view, and the PC floor plate is formed. A plurality of isosceles formed by arranging at least one side of the long side and the short side in a plan view, and arranging the bottom of each of a number of isosceles triangles having the same shape on a straight line. A pair of PC floorboards is formed in a shape excluding the pointed portion of the waveform in which each equilateral part of the triangle is continuous, and a space for concrete casting is formed between the end faces of the sides of the PC floorboards facing each other. Place the part from the wavy edge of the side of the building on the steel beam of the building frame, and connect the connecting parts of a large number of connecting reinforcing bars embedded at intervals in each PC floor panel from the wavy end face. Of the reinforcing joints projecting into the space and projecting into the space from the corrugated end face of one of the PC floorboards. The joint portion and the joint portion of the joint reinforcing bar projecting from the corrugated end face of the other PC floor plate approach and become substantially parallel to each other, and the joint portions of the joint reinforcing bar approximately parallel in the space are joined to each other. Then, a large number of studs having heads are planted at intervals on the upper surface of the steel beam facing the casting space, and concrete is cast in the casting space, and the steel beam and each PC floorboard are placed. And bonding the PC floorboards to each other. In a preferred embodiment, the paired PC floorboards have the corrugated top of one PC floorboard facing the corrugated top of the other PC floorboard, and the paired PC floorboards have the corrugated top of one PC floorboard. A portion of the pair of PC floorboards from the side edge is placed on the steel beam of the building frame so that the valley faces the corrugated valley of the other PC floorboard. A space for placing concrete is formed between the end faces. Also, the joining portions of a large number of joining rebars protruding from the end face of the corrugated valley of the facing PC floor plate into the casting space are bent in substantially the same direction in substantially the same horizontal plane, and the end of the pair of PC floor plates is bent. The corrugated portion from the edge is placed on the steel beam of the building frame, and the joining portions of the joining bars of each pair are brought close to each other and become substantially parallel.

[0005] Normally, joining portions of a large number of joint reinforcing bars embedded in each PC floorboard are projected into the space from the end face of each corrugated valley portion, and each corrugated valley of one PC floorboard. The joining portion of the joining reinforcing bar projecting into the space from the portion and the joining portion of the joining reinforcing bar projecting from each of the corrugated valleys of the other PC floorboard approach to be substantially parallel to each other. The joining portions of the joined reinforcing bars are joined to each other by welding or mechanical joining means. When joining the joining portions of the joining bars that are substantially parallel to each other by welding, for example, joining portions that are arranged substantially in parallel and are adjacent to each other are, for example, 10 times as long as the diameter d of the reinforcing bar. Weld over. In addition, when joining the joining portions of the joint bars that are substantially parallel to each other by mechanical joining means, for example, a pair of steel sleeves are arranged at intervals between the joining portions of the joining bars that are arranged substantially in parallel. Then, the wedge is pressed into the hole at the center of the sleeve, and the wedge is cut into the joining portion of the joining reinforcing bar to be integrated. In a preferred embodiment, the PC floorboard is provided with two layers of lattice reinforcement buried vertically spaced apart, and the vertical reinforcement or horizontal reinforcement of the upper lattice reinforcement is corrugated valley at the edge of the PC floorboard. Use a PC floor plate that is protruded from the end face of the part and the connecting bar of the reinforcing bar is formed with the protruding reinforcing bar portion. In addition to the upper grid-shaped reinforcing bar in the PC floor plate, Make the joint bar project from the wavy end face of the edge,
It is also possible to use a PC floorboard in which the projecting portion forms the joining portion.

[0006] In addition, the P to the steel beam of the building frame of the present invention.
In the method of fixing the C floor panel, the shape of the PC floor panel is rectangular with long sides and short sides in plan view, and at least one of the long sides and short sides of the PC floor panel is corrugated in plan view. A shape excluding a sharp portion of a waveform in which each isosceles part of a number of isosceles triangles formed by continuously arranging the bases of a large number of isosceles triangles of the same shape on a straight line and excluding the waveforms. In order to form a space for placing concrete between the corrugated end faces of the sides of the facing PC floorboards, a portion from the edge of the side of the pair of PC floorboards is placed on the steel beam of the building frame. On each of the PC floor boards, a large number of bonding irons are provided so that the bonding iron boards bonded to the ends of the fixing reinforcing bars are spaced apart from the corrugated end faces of the PC floor boards. The fixing rebar and the joining iron plate joined to the iron plate are embedded in the PC floor plate, and the upper side of each joining iron plate The upper surface of each joining iron plate is exposed in the formed concave portion, and an elongated connecting iron material is arranged between the corresponding joining iron plates of both PC floorboards, corresponding to the joining iron plate of each connecting iron material. Weld the part to the iron plate for joining,
A large number of studs with heads are planted at intervals on the upper surface of the steel beam facing the casting space, and concrete is cast into the casting space to form a steel beam, each PC floor board, and each stud. P
C floor plates are joined together. In a preferred embodiment, the pair of PC floors is such that the corrugated top of one PC floor faces the corrugated top of the other PC floor, and the pair of PC floors is corrugated valley of one PC floor. So that the part faces the corrugated valley of the other PC floorboard,
A portion of the C floorboard from the side edge is placed on the steel beam of the building frame, and a space for concrete casting is formed between the end faces of the facing PC floorboards. Also, on each PC floor plate, a large number of joining iron plates joined to the ends of the fixed reinforcing bars having a predetermined length are arranged so as to be substantially horizontal and at a portion from the edge corresponding to the corrugated top of the PC floor plate. The anchoring rebar and the joining iron plate joined to the joining iron plate are embedded in the PC floorboard, and the upper surface of each joining iron plate is exposed in the recess formed on the upper side of each joining iron plate. An elongated connecting iron material is arranged between the corresponding joining iron plates of both PC floor boards, and a portion of each connecting iron material corresponding to the joining iron plate is welded to the joining iron plate.

In a preferred embodiment, the facing PC
Corrugated iron plates are embedded corresponding to every other or two or more tops of the corrugations of the floorboards, and are opened upwards of the PC floorboards above each of the bonding ironplates, and the corrugations of the PC floorboards are opened. A PC floor plate is used in which the upper surface of each joining iron plate is exposed in a recess formed to reach the end surface of the top. Also,
The PC floorboard is provided with two layers of lattice reinforcement buried at intervals above and below, and is joined to the end of the fixing reinforcement having a predetermined length above the vertical reinforcement and the horizontal reinforcement of the upper lattice reinforcement. Use a PC floor board in which a steel plate for bonding is embedded.

[0008] In a preferred embodiment, the PC floorboard is reinforced with two layers of grid reinforcement vertically spaced apart, and the corrugated edge of the upper half reinforced by the upper grid reinforcement. The end face protrudes from the wavy edge of the lower half reinforced by the lower grid-like reinforcing bar at the stepped portion, and bends around the lower grid-like reinforcing bar in a wavy shape along the end face of the wavy edge Use the PC floorboard on which the wife rebar you want to have is arranged. Also, on a steel beam having a cover plate fixed to the steel beam by a number of bolts and nuts on the upper surface of the steel beam,
In the case where the C floorboard is mounted and the PC floorboard is fixed to the steel beam, a large recess is formed at a portion of the PC floorboard in plan view which is larger than the edge corresponding to the cover plate, and the edge of the recess is formed. A portion parallel to the edge is formed in the same waveform as the waveform of the other edge, and a joining iron plate is buried in a portion corresponding to the top of the waveform of the recess, or a valley of the waveform of the recess. Use a PC floorboard that protrudes the joining portion of the joining rebar from the end face of the part.

A general configuration of a PC floorboard used in the embodiment of the present invention is that the shape of the PC floorboard is a rectangular shape having long sides and short sides in a plan view, and the waveform is formed into a large number of the same shape. The bases of the isosceles triangle are continuously arranged on a straight line to form a shape excluding the sharp portion of the waveform in which each of the isosceles of the many isosceles triangles is continuous. The connecting part of the reinforcing bar protrudes from the end face of the corrugated valley on the short side, and the connecting iron plate bonded to the end of the fixing bar corresponds to the corrugated top of the long side of the PC floorboard The anchoring bars and the joining iron plates joined to the large number of joining iron plates are embedded in the PC floor plate so as to be substantially horizontal at the part to be joined, and a recess formed on the upper side of each joining iron plate In the present invention, at least a part of the upper surface of each joining iron plate is exposed. It is a plan view of the shape of the building structures (steel columns, the arrangement position of such steel beam, spacing, etc.) use the PC floor construction in accordance with the like.

[0010]

1 to 17 show an embodiment in which the present invention is applied to a case where a PC floor plate is fixed to a steel beam of a steel frame. First, the configuration of a normal PC floor panel 10 will be described. The PC floorboard 10 is made of a reinforced concrete plate body having a flat lower surface 10a and upper surface 10b and the same thickness. As shown in FIG. And each side A,
B has a wavy shape in plan view. Each side A, the waveform of B, as shown in FIG. 2, a number of isosceles triangles each respective base Ta ₂ of (those shown isosceles right triangle) Ta arranged continuously in a straight line Sl equilateral isomorphous forming a waveform comprising a part Ta _1, the upper pointed portion of the waveform was excised with parallel linear Sl ₁ slightly the bottom, and a straight line parallel Sl slightly the bottom of the pointed portion of the lower ₂ in excised, straight excised not part of a large number of equilateral portion Ta _1, a shape constituted by wavy uneven lines consisting of straight lines Sl ₂ of the upper straight lines Sl ₁ and a lower, or 3 As shown, many isosceles triangles of the same shape (the isosceles right triangle in the illustration)
Each base Ta ₂ of Ta to form a wave formed by arranging in succession on a line Sl from each equilateral portions Ta _1, the upper pointed portion of the waveform was excised little arc line Cl _1, and pointed its underside the portion was cut little arc line Cl _2, constituted by a number of straight resected portion not equilateral portion Ta _1, wave-like unevenness wire made of arc line Cl ₂ the upper arc line Cl ₁ and lower The upper and lower sides may be straight lines Sl ₁ , Sl ₂ or curves Cl ₁ , Cl ₂ . Incidentally, the upper straight Sl ₁ or arc line Cl ₁ part corresponds to the top of the corrugated linearly Sl ₂ or arc line Cl ₂ portions of the lower side corresponds to the corrugated valleys.

The PC floorboard 10 is reinforced by a lower reinforcing bar 11 and an upper reinforcing bar 12. The lower reinforcing bar 11 has a lattice shape including vertical reinforcing bars 11a arranged in parallel with the long side portion A at intervals and horizontal reinforcing bars 11b arranged at right angles to each vertical reinforcing bar 11a and at intervals. rebar, and whether wife rebar consisting long sides corrugated and reinforcing bars 11c ₁ of the Do wife shaped like arranged along the short side portion wife shaped reinforcing bars 11c ₂ Metropolitan I want arranged along the corrugated B of a 11c. Upper reinforcing bar 12
Are vertical reinforcing bars 12 arranged in parallel with the long side portion A at intervals.
a and a grid-shaped reinforcing bar composed of horizontal reinforcing bars 12b arranged at a right angle to and spaced from the vertical reinforcing bars 12a, and at a portion from the long side portion A between every other horizontal reinforcing bars 12b, and A rectangular joining iron plate 14 is welded to one end, and is constituted by two fixing reinforcing bars 12d of a predetermined length which are parallel to each other at intervals. Vertical reinforcing bar 11 of lower reinforcing bar 11
a is disposed between the corrugated tops of both short sides B, and the horizontal reinforcing bar 11b of the lower reinforcing bar 11 is also disposed between the tops of the waveforms of both long sides A. The vertical reinforcing bars 12a of the upper reinforcing bar 12 are arranged between the corrugated valleys of both short sides B, and the portions from both ends of each vertical reinforcing bar 12a are positioned from the end faces of the corrugated valleys of the short sides B. The reinforcing bar portion protrudes by a predetermined length, and the protruding reinforcing bar portion is inclined in a certain direction within the same plane, so that the connecting portion 12a _{1 of the} reinforcing bar is joined.
It has become. Also, the horizontal reinforcing bar 12b of the upper reinforcing bar 12
Are also arranged between the corrugated valleys of both long sides A. In addition,
Reinforcing bars 11a, 11b, 11c, 12a, 12b, 12d
As the method, a deformed iron bar having an uneven surface is used.

The short side B of the PC floor panel 10 is shown in FIGS.
As shown in, its has an end surface 10d intermediate the stepped portion 10d ₃ of, are smaller configured end surface 10d ₁ of the lower half from the end face 10d ₂ of the upper half only stepped portion 10d ₃ minutes. That is,
The short side portion B of the PC floor panel 10 is as shown in FIG. 4 in plan view. As shown in FIGS. 6 to 8, except for the corrugated top corresponding to the buried portion of the joining iron plate 14 on the long side portion A of the PC floor plate 10 and the vicinity thereof, as shown in FIGS.
c is an intermediate in the formation of step portion 10c ₃ of the end surface 10 of the lower half
c ₁ is smaller configuration than the end surface 10c ₂ of the top half only stepped portion 10c ₃ minutes. The end face 10c of the corrugated top corresponding to every other joining iron plate 14 of the long side A of the PC floor board 10 and the end face 10c in the vicinity thereof has an end face 10c in the upper half without a step.
₂ and the end surface 10c ₁ of the lower half are flush 10c ₂ a. Then, rectangular joining iron plates 14 are respectively embedded in portions from the end face 10 c corresponding to every other top portion of the waveform of the long side portion A of the PC floor plate 10, and the upper side of each joining iron plate 14 is parallel. A pair of fixing reinforcing bars 12d are welded W
They are joined by d _1. Each joining iron plate 14 is embedded in parallel with the upper surface 10b and the lower surface 10a of the PC floor plate 10, and the long side 14a outside the joining iron plate 14 has a waveform in the upper half of the long side A of the PC floor plate 10 in plan view. And approximately overlap with the line connecting the valleys. In these portions, concave portions 10e formed of concrete inclined surfaces 10e ₁ , 10e ₂ , and 10e ₃ are formed, and the concave portions 10e are open toward the upper surface 10b of the PC floorboard and have a corrugated end face 10c of the PC floorboard.
The main upper surface 14c of the joining iron plate 14 is exposed by the recess 10e. That is, P corresponding to the exposed upper surface 14c of the joining iron plate 14
Corrugated long side portion A of C floorboard 10, as shown in FIG. 5 in plan view, an end surface 10c ₁ of the end face 10c ₂ and the lower half of the upper half are turned face 10c ₂ a flush, hatched 10c ₂ of the surface 10c ₂ a and is viewed from the end face 10c ₂ of the upper in the vicinity thereof
b.

A part of a steel frame building frame 1 is shown in FIG.
As shown in the figure, a large number of steel columns 2 are built on the foundation, steel beams 3 and 4 are arranged between the steel columns 2, and both ends of the beams 3 and 4 are joined to the steel columns 1. Steel beams are arranged between the girders 3 and 4, etc., and both ends of the girders are joined to the girders 3 and 4, etc. Also, a steel frame is provided outside the steel column 1 around the building frame 1. A small beam 5 is arranged, one end of the small beam 5 is joined to the steel column 1, and small beams 6, 7 for supporting an outer wall and the like are joined to the other end of the small beam 5.

Next, a method of fixing the PC floor panel 10 to the H-shaped steel beam 4 or the like of the building frame 1 will be described. A large number of PC floor boards 10 are placed on the flat upper surface 4 a ₁ of the upper flange 4 a of the steel beam 4, with the lower surfaces of their peripheral portions. The short sides B of the adjacent pairs of PC floor boards 10 are joined as follows. First, as shown in FIGS. 6 and 7, the interval between the corrugated valley of the short side B of one PC floor panel 10 and the corrugated valley of the short side B of the other PC floor panel 10 is increased. And both P
The connecting portions 12a1 of the vertical reinforcing bars projecting from the end face of the corrugated valley of the short side portion B of the C floor panel ₁₀ are arranged so as to be substantially parallel to each other with a small interval. The end surface 10d of the short side portion B of both the PC floor 10, a flat upper surface 4a ₁ of the upper flange 4a of the steel beam 4 positioned between 10d, previously implanted in advance a number of the stud Sd _1. Stud S above
The d _1, using a stud integrally provided with a large-diameter head portion Sdb than the stem at the top of the small diameter stem Sda, its growth, for example, the lower surface 10a of the PC floor board 10 and the upper longitudinal reinforcing bars 11a To substantially match the distance (dimension) between the lower surface and the lower surface. As shown in FIGS. 13 and 14, both PCs
Two sleeves Sv to the bonding portion 12a ₁ of the respective longitudinal reinforcing bars 12a which are parallel to the floor board 10 are stacked in a front view
Are inserted at intervals L ₁ (L ₁ = 10 × d or more, d is the rebar diameter), and wedges Wg are press-fitted into circular holes Sv ₁ at the center of each sleeve Sv using a hydraulic tool. It is integrated bonding portion 12a ₁ of the pair by bite into the wedge Wg to joining portions 12a ₁ bonded together. Connecting the bonding portion 12a ₁ between the longitudinal reinforcing bars 12a projecting from the short side portion B of the PC floor 10 adjacent in a similar manner. Then, between the short side portion B of both the PC floor 10 of the steel beam 4 upper concrete on the upper surface 4a ₁ of the flange 4a hitting the設空between Sp ₁ of the central portion and on the central portion of each joining portion 12a ₁ after arranged flowed rebar 13 on each stud Sd _1, and Da設concrete to the punching設空between Sp _1, the short side portion B of both the PC floor 10 secured to the steel beam 4 and both PC The short sides B of the floorboard 10 are integrated.

The long sides A of adjacent pairs of PC floor boards 10 are joined as follows. First, as shown in FIGS. 8 to 10, the corrugated top of the long side A of one PC floor panel 10 and the corrugated top of the long side A of the other PC floor panel 10 face each other at an interval. Then, the joint iron plates 14 buried corresponding to every other top portion of the long side portion A of both PC floor boards 10 are arranged at intervals. In addition, both PC floor boards 1
0 Upper flange 3 of steel beam 3 located between long sides A
a flat upper surface 3a ₁ of a, previously implanted at a pre numerous stud Sd ₂ intervals. As the stud Sd _2,
Use the same as the stud Sd _1, its growth, for example, be slightly smaller than the dimension between the upper surface of the lower surface 10a and the joining iron plate 14 of PC floor 10. The exposed surface 14c of each joining iron plate 14 of both PC floor boards 10 facing each other
An elongated rectangular connecting iron plate 15 made of steel is arranged on the upper side, and the periphery of each connecting iron plate 15 corresponding to the exposed surface 14a is joined to the exposed surface 14a of each joining iron plate 14 by welding Wd ₂ , The opposing joining iron plates 14 are integrated via the respective connecting iron plates 15.

Then, the long sides A of both PC floor boards 10
After the reinforcing steel 13 is placed on the center of each connecting iron plate 15 in the space Sp _{2 above} the flange 3a of the beam 3 between them, concrete is poured into the space Sp ₂ and both PC floor boards 10
The long side A and the steel beam 3 are integrated. Incidentally, when the distance between the end surface 10c ₁ of the lower corrugated valleys of long part A of PC floor board 10 that face each other in the upper beam 3 is greater than the width of the upper flange 3a of the beam 3 Is the flange 3a
A barrier plate 16 is applied to the lower surface 10a of the long side A of the PC floor plate 10 along the side edge of the PC floor plate 10 to form a gap 17 between the side edge and the end surface.
After filling, concrete is poured.

If the girder of the steel frame 1 is joined using cover plates, bolts and nuts, and the cover plate Cp and many bolts b are present above the joint, The PC floorboard 20 described in (1) is used. The PC floor panel 20 is reinforced with a lower reinforcing bar and an upper reinforcing bar, similarly to the PC floor panel 10, and the configurations of the lower reinforcing bar and the upper reinforcing bar are the same as those of the PC floor panel 10. As shown in FIG. 15, the PC floor panel 20 has a large concave portion A ₁ a formed on a long side portion A ₁ corresponding to the cover plate Cp joined by a number of bolts / nuts b · n of the steel beam 3. I have. The recess A ₁ a has a long side A ₁ a1 parallel to the steel beam 3 in a plan view and slightly longer than the length of the cover plate Cp.
And the short side A ₁ a2 perpendicular to the steel beam 3. The long side A ₁ a1 has the same configuration as the normal long side A of the PC floor panel 10, that is, the PC floor panel 20. The joining side iron plate 24 is embedded in a portion corresponding to the top of the other wavy shape of the long side portion A ₁ , and the short side A ₁ a
The portion 2 is a straight line in a plan view. Corner 2a of pillar 2
In the portion of the PC floor 20 corresponding shape and slightly larger notch A ₁ b from the corner portion 2a substantially matching the shape of the corner 2a of the column 2 is formed. Other configurations of the PC floor panel 20 are the same as those of the PC floor panel 10.

The PC floor plate 30 arranged on the outer peripheral portion of the steel frame building frame 1 in plan view is configured as follows. P
The C floor plate 30 is reinforced with a lower reinforcing bar and an upper reinforcing bar, similarly to the PC floor plate 10. Items not described below for the PC floorboard 30 are the same as those for the PC floorboards 10 and 20. As shown in FIGS. 15 and 16, one long side portion A ₂ of the PC floor plate 30 has the same configuration as the long side portion A ₁ of the PC floor plate 20. The long side portion A ₃ of the other side formed in a linear shape its edge is in a plan view, the through hole 36 of the inverted frusto-conical numerous large diameter spaced along and intervals in the longitudinal direction on its edge is formed Have been. Short side B of PC floorboard 30
₁ has the same configuration as the configuration in which the joining iron plate 14 is embedded in a portion corresponding to every other corrugated top of the long side portion A of the PC floor plate 10. A notch A of the PC floor plate 20 is provided at a portion of the PC floor plate 30 corresponding to the corner 2a of the pillar 2.
₁ b the same notch A ₂ b is formed. Further, there is formed a large recess A ₃ a is on the other long side portion A _3.

P is placed above the beams 3 and 4 of the steel frame 1
The C floor plate 30 is placed, and the PC floor plate 30 is placed above the beams 5 and 6 of the building frame 1, and a number of bolts and nuts b · n
The concave portions A ₁ a and P of the long side portion A ₁ of the PC floor plate 20 are provided at portions corresponding to the cover plate Cp joined to the steel beam 3 by the
The concave portion on the long side of the C floor plate 30 is made to correspond. On the exposed surfaces of the joining iron plates 14 and 24 facing each other of the two PC floor plates 20 and 30, elongated rectangular connecting iron plates 15 and 25 made of steel are arranged, and each connecting iron plate corresponding to the exposed surface is provided. The peripheral portions of the iron plates 15 and 25 are joined to the respective iron plates 14 and 2 for joining.
4 by welding to the exposed surface of each of the iron plates 14, 2
4 are integrated via the respective connecting iron plates 15 and 25. The upper surface of the upper flange of the steel beam 3 located between the long sides A _1, A ₂ of both PC floorboards 20 and 30, previously implanted in advance a number of studs Sd _3. Then, both PC floorboards 20,
Long side portion A ₁ of 30, the reinforcing bars 13 passed on to a central portion of each connecting iron plate 15 and 25 of the space Sp ₃ of the upper flange upper steel beam 3 between A ₂ and Haisuji, and the recess A ₁ a, against the sheathing board 16 to the lower surface of the PC floorboards 20 and 30 corresponding to a ₂ a, and Da設concrete in the space Sp _3, PC floor 20,
30 long sides A ₁ and A ₂ are integrated with each other, and PC
The long sides A ₁ and A _{2 of the} floorboards 20 and 30 and the steel beam 3 are integrated.

The joint between the short sides of the PC floor plate 20 is made of PC
This is the same as the method of joining the short sides B of the floorboard 10. As shown in FIG. 15 and FIG.
_The studs Sd ₄ are planted on the steel beams 6 corresponding to the centers of the through holes 36 of the _third , respectively, concrete is poured into the through holes 36, and the long side portion A ₃ of the PC floor plate 30 and the steel beams are inserted. 6
And are integrated. Short part B ₁ between the PC floor 30, P
This is the same as the method of joining the long sides A of the C floorboard 10.
When the short side portion B of the PC floor panel 10 comes to the outer peripheral wall 9 side of the building frame 1, as shown in FIG. The short side B does not have to be fixed to the steel beam 7 so that the short side portion B comes to a position close to the support 8 of the outer peripheral wall 9 attached to the beam 7.

[0021]

The present invention has the following features (a) to (d) by providing the structure described in each of the claims.
The effect of (v) is exhibited. (B) PC for steel beams of the building frame of the invention according to claim 1
The method of fixing the floorboard is as follows. The shape of the PC floorboard is rectangular with long sides and short sides in plan view, and at least one of the long sides and short sides of the PC floorboard is corrugated in plan view. The waveform is formed into a shape excluding the pointed portion of the waveform in which each of the isosceles of a number of isosceles triangles formed by arranging the bases of a number of isosceles triangles of the same shape on a straight line and continuing. In order to form a space for placing concrete between the facing end faces of the PC floorboards, place the part of the paired PC floorboards near the corrugated edge on the steel beam of the building frame. The joint portions of a large number of jointed reinforcing bars placed and embedded in each PC floor plate at intervals are projected from the end surface of the corrugated shape into the space. Between the joint part of the joint reinforcing bar protruding from the wavy end face of the other PC floor panel So that the joining portions of the joining rebars substantially parallel in the space are joined to each other, and a head is provided on the upper surface of the steel beam facing the driving space. A large number of studs are planted at intervals, and concrete is cast in the casting space to join the steel beam with each PC floor plate and each PC floor plate.
Deck plate floor plate structure that constructs a reinforced concrete floor plate by arranging a deck plate on the steel beam of the building frame by cooperation of the joint part of each joint reinforcing bar and the many studs with a head It is possible to obtain a floor plate structure having the same structural characteristics as that of the above. Further, at least one of the long side and the short side of the PC floorboard is formed in a wave shape in a plan view, and the wave shape is formed by continuously arranging the bases of a number of isosceles triangles of the same shape on a straight line. A large number of isosceles triangles have a shape excluding the pointed portion of the waveform where each isosceles are continuous, so that a large in-plane shear strength is given to the floor plate in which the PC floor plate is firmly joined to the steel beam. be able to. (B) The method for fixing a PC floorboard according to the second aspect of the present invention can not only achieve the operation and effect described in the above (a), but also make the pair of PC floorboards have the corrugated top of one PC floorboard and the other. Facing the corrugated top of the PC floorboard of
The C floor panel is placed on the steel beam of the building frame from the edge of the side of the pair of PC floor panels so that the corrugated valley of one PC floor panel faces the corrugated valley of the other PC floor panel. The concrete placing space is formed between the end faces of the facing PC floorboards, and the connecting portions of a number of connecting reinforcing bars embedded in the PC floorboards are corrugated end faces of the respective valleys. Of the joint reinforcing bar projecting from the corrugated valleys of one PC floor plate into the space and the joint reinforcing bar projecting from the corrugated valleys of the other PC floor plate. The joining portions are brought close to and substantially parallel to each other, the joining portions of the joining bars that are substantially parallel to each other are joined to each other, and a number of studs each having a head on the upper surface of the steel beam facing the driving space are provided. Because the concrete is cast in the casting space, the joints of the joint reinforcement are long. What can be reliably joined, it is possible to firmly bond the steel beam and the PC floor and each PC floorboards with each other.

(C) The method of fixing the PC floorboard according to the third aspect of the present invention not only can provide the effects described in the above (a) and (b), but also has a corrugated valley of the facing PC floorboard. The connecting parts of a large number of connecting reinforcing bars protruding from the end face of the part into the casting space are bent in substantially the same direction in substantially the same horizontal plane, and the part from the side edge of the pair of PC floorboards is By placing them on the steel beams of the skeleton, the joining parts of each pair of joining rebars approach each other and become almost parallel, so even if all PC floor boards of the same configuration are used, The joining portions of the joining rebar do not interfere with each other, and the work of placing and joining the PC floorboard on the steel beam is facilitated. (D) As described in claim 4, a pair of steel sleeves are fitted at intervals into the joining portions of the joining rebar arranged substantially in parallel, and a wedge is pressed into a hole at the center of the sleeve to join. When the wedges are bitten into the joining portions of the reinforcing bars and integrated, and the joining portions of the substantially parallel joining bars are joined to each other, the joining portions of the joining bars can be joined firmly and with good workability.

(E) As described in claim 5, the PC floorboard is provided with two layers of grid-like reinforcing bars buried at intervals above and below, and the vertical reinforcing bars or horizontal reinforcing bars of the upper grid-like reinforcing bars are connected to the PC floorboard. A PC that protrudes from the end face of the corrugated valley of the edge, and the protruding rebar part forms a joining portion of the joint rebar.
The use of floor boards makes it easy to manufacture PC floor boards in which the joints of the joint reinforcement project from the end faces of the corrugated valleys at the edges of the PC floor boards, and arranges deck plates on the steel beams of the building frame Thus, a floor plate having the same structural characteristics as a deck plate floor plate structure for constructing a reinforced concrete floor plate can be provided at low cost. (F) As described in claim 6, the PC floorboard is reinforced by two layers of lattice-shaped reinforcing bars arranged at intervals above and below, and the connecting portion of the reinforcing bar embedded in the PC floorboard is corrugated. In the side protruding from the end face of the valley, the lower half of the PC floorboard is reinforced with an extensible reinforcing bar and the lower half of the PC floorboard has a wavy edge. There is a step between the upper half of the PC floorboard and the wavy edge of the PC floorboard, and the upper half of the wavy edge of the PC floorboard is only the stepped portion from the wavy end of the lower half of the PC floorboard. When the protruding PC floor plate is used, the lower half of the PC floor plate reinforced with Ina-mitsu rebar will be in contact with the upper edge of the steel beam because the lower half of the PC floor plate will contact the upper edge of the steel beam. It is not damaged even if a large load is applied, and the space for concrete casting is formed between the end faces of the facing PC floorboards. Since the width of the lower part of each PC floorboard is increased, the contact area between the concrete to be cast into the casting space and the upper surface of the steel beam is increased, and the stepped portion is also formed by the concrete to be cast on the steel beam. As a result, the corrugated edge of the PC floorboard can be firmly joined to the steel beam and supported. Besides, PC
The contact area between the floorboard and the post-cast concrete also increases, and the two can be firmly joined.

(G) In the method of fixing a PC floor plate to a steel beam of a building frame according to the invention according to claim 7, the PC floor plate has a rectangular shape having a long side portion and a short side portion in plan view. At least one of the long side portion and the short side portion of the floor plate is corrugated in plan view, and the corrugation is formed by arranging the bases of a large number of isosceles triangles of the same shape continuously on a straight line. The PC of the pair is formed in a shape excluding the pointed portion of the waveform in which each of the equilateral triangles of the equilateral triangle is continuous, and a space for placing concrete is formed between the end faces of the sides of the facing PC floorboards. A portion of the side of the floorboard from the wavy edge is placed on a steel beam of the building frame, and each of the PC floorboards has a joining iron plate joined to the end of the fixing reinforcing bar. Fixing reinforcing bars joined to a large number of joining iron plates so as to be spaced apart from the end face of the mold, and The joint iron plate is embedded in the PC floor plate, and the upper surface of each joint iron plate is exposed in a recess formed on the upper side of each joint iron plate, and is elongated between the corresponding joint iron plates of both PC floor plates. Arrange iron material for connection of
A portion corresponding to the joining iron plate of each connecting iron material is welded to the joining iron plate, and a large number of studs with heads are planted at intervals on the upper surface of the steel beam facing the casting space, Since concrete is cast in the casting space and the steel beams are connected to the PC floorboards and the PC floorboards, a work of welding a portion corresponding to the bonding iron plate of each connecting iron material to the bonding iron plate is performed. Deck which arranges deck plate on steel beam of building frame and builds reinforced concrete floor board by cooperation of iron material for connection with each connection iron material and many studs with head A floorboard having the same structural characteristics as the plate floorboard structure can be obtained. Further, at least one of the long side and the short side of the PC floorboard is formed in a wave shape in a plan view, and the wave shape is formed by continuously arranging the bases of a number of isosceles triangles of the same shape on a straight line. A large number of isosceles triangles are formed in a shape excluding the pointed portion of the waveform where each equilateral part is continuous, so that a large in-plane shear strength is given to a floor plate formed by firmly joining a PC floor plate to a steel beam. be able to. (H) The method of fixing a PC floorboard according to the eighth aspect of the present invention can not only exert the operation and effect described in (G), but also allows the paired PC floorboards to have the corrugated top of one PC floorboard on the other side. Of the pair of PC floorboards such that the corrugated valleys of one PC floorboard face the corrugated valleys of the other PC floorboard. The part from the edge of the side is placed on the steel beam of the building frame, and a space for concrete casting is formed between the end faces of the facing PC floorboards, and each PC floorboard has a predetermined length. Each fixing rebar joined to a large number of joining iron plates so that the joining iron plate joined to the end of the fixing rebar is substantially horizontal and at a portion from the edge corresponding to the corrugated top of the PC floorboard And the joining iron plate is P
C is embedded in the floor plate, the upper surface of each joining iron plate is exposed in a recess formed on the upper side of each joining iron plate,
An elongated connecting iron is arranged between the corresponding joining iron plates of both PC floor boards, and a portion corresponding to the joining iron plate of each connecting iron is welded to the joining iron plate. It can be shortened, and the workability of welding work to weld the part corresponding to the joining iron plate of each connecting iron material to the joining iron plate is improved, and many connecting iron materials with the connecting iron material and many headed In cooperation with the studs, it is possible to easily obtain a floor plate having the same structural characteristics as a deck plate floor plate structure in which a deck plate is disposed on a steel beam of a building frame to construct a reinforced concrete floor plate.

(I) As described in claim 9, the facing P
A joining iron plate is embedded corresponding to every other or two or more tops of the corrugation of the C floor plate, and is opened upward of the PC floor plate above each joining iron plate and corrugated of the PC floor plate. Using a PC floorboard with the upper surface of each joining iron plate exposed in the recess formed so as to reach the end surface of, simply placing an elongated straight connecting iron material on both upper surfaces of the corresponding joining iron plates, A portion corresponding to the joining iron plate of each connecting iron material can be welded to the joining iron plate, and the workability of the welding operation is improved. (G) As described in claim 10, the PC floorboard is provided with two layers of grid-like reinforcing bars embedded at intervals above and below, and a predetermined length is provided above the vertical reinforcing bars and the horizontal reinforcing bars of the upper grid-like reinforcing bars. When using a PC floorboard in which a joining iron plate joined to the end of the fixing reinforcing bar is embedded, the upper surface of each joining iron plate can be used without increasing the depth of the recess formed on the upper side of the joining iron plate. Can be exposed and the depth of the recess is not large,
The workability of the welding operation of welding a portion of each connecting iron material corresponding to the joining iron plate to the joining iron plate is also improved.

(11) As described in claim 11, the PC floorboard is reinforced by two layers of grid-shaped reinforcing bars arranged at intervals above and below, and a wavy edge is formed around the lower grid-shaped reinforcing bars. A reinforcing bar bent in a wavy shape along the end surface of the PC is reinforced, and a portion of the lower half of the PC floor plate from the wavy edge is reinforced with the reinforcing bar.
For the corrugated top of the upper half edge that does not correspond to the buried portion of the joining iron plate of the floorboard, and at the edges other than the vicinity thereof, P
There is a step between the lower half corrugated edge of the C floorboard and the upper half corrugated edge of the PC floorboard, and the upper half corrugated edge is only the stepped PC floorboard. At the top of the corrugation of the upper half edge corresponding to the buried portion of the joining iron plate of the PC floorboard and the edge near the corrugation, protruding from the end surface of the corrugation of the lower half of
The wavy top of the upper half edge and the end face near it are PC
If you use a PC floor panel that is flush with the corrugated top of the lower half of the floor panel and the end face in the vicinity, a PC reinforced with wife reinforcing bars
Since the lower half of the floorboard is in contact with the upper surface of the steel beam at the wavy edge, even if a large load is applied to the edge of the PC floorboard, it is not damaged, and the PC floorboard facing each other is not damaged. The concrete casting space formed between the end faces is PC
At the edges other than the corrugated top of the upper half of the floor plate, which does not correspond to the buried portion of the joining iron plate of the floor plate, and at the edges other than the vicinity thereof, the width becomes wider in the lower half of each PC floor plate. The contact area between the post-cast concrete in the installation space and the upper surface of the steel beam is increased, and the step is supported by the concrete post-cast on the steel beam.
The corrugated edge of the floorboard can be firmly joined and supported on the steel beam. In addition, the contact area between the PC floorboard and the post-cast concrete increases, and the two can be firmly joined. Also, the corrugated top of the upper half edge corresponding to the buried portion of the joining iron plate of the PC floorboard and the vicinity thereof (that is, the portion corresponding to the concave portion exposing the joining iron plate) have an edge. Since the top of the corrugated top of the upper half edge and the end face of the vicinity thereof are flush with the top of the corrugated top of the lower half of the PC floorboard and the end face of the vicinity thereof, each joint Even if a concave portion is formed so as to be opened toward the upper side of the PC floor plate on the upper side of the iron plate and reach the end surface of the corrugated shape of the PC floor plate, the wave of the upper half edge corresponding to the embedded portion of the joining iron plate is formed. The edge of the top of the mold and the vicinity thereof does not easily break. (Ii) As described in claim 12, a PC floor plate is placed on a steel beam having a cover plate fixed to the steel beam by a number of bolts and nuts on the upper surface of the steel beam, and the PC floor plate is mounted on a steel frame. When fixed to the beam, a large recess is formed at a portion of the PC floorboard in plan view that is larger than the edge corresponding to the cover plate, and a portion parallel to the edge of the recess is formed as another edge portion. The same corrugation as the corrugation is formed, and a joining iron plate is buried in a portion corresponding to the top of the corrugation of the concave portion, or a joint portion of the reinforcing bar for bonding from the end face of the valley of the corrugation of the concave portion. If a protruding PC floor plate is used, even if the cover plate exists on the steel beam, it does not become an obstacle, and the wavy edge of the PC floor plate can be easily placed on the steel beam. .

(C) The PC floorboard of the invention according to claim 13 is configured such that the shape of the PC floorboard is rectangular having long sides and short sides in a plan view, and a large number of the same waves are formed. The bases of the isosceles triangle are continuously arranged on a straight line to form a shape excluding the pointed portion of the waveform in which each isosceles of a number of isosceles triangles are continuous, and a number of junctions embedded in each PC floorboard The joining plate of the reinforcing bar is projected from the end face of the corrugated valley on the short side, and the joining iron plate joined to the end of the fixing bar is PC
Each anchoring rebar and each joining iron plate joined to a large number of joining iron plates are embedded in the PC floor plate so as to be located substantially at the portion corresponding to the corrugated top of the long side of the floor plate and to be substantially horizontal. Since at least a part of the upper surface of each joining iron plate is exposed in a concave portion formed above each joining iron plate, the method for fixing a PC floor plate to a steel beam of a building frame according to any one of claims 1 to 11, is preferred. The invention according to claims 1 to 11 can be carried out using the same PC floor plate as long as it can be used and the arrangement of the steel beams on which the PC floor plate is placed does not change in plan view. Since the number of types of PC floor boards can be reduced, a deck plate having a structural property equivalent to that of a deck plate floor board structure in which a deck plate is provided on a steel beam of a building frame to construct a reinforced concrete floor board.
There is an effect that a steel frame building provided with a floor panel made of C floor panel can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing a PC floorboard of an embodiment.

FIG. 2 is a plan view showing a waveform at an edge of a PC floorboard having a straight crest and a bottom in the embodiment.

FIG. 3 is a plan view showing a waveform at an edge of a PC floorboard having a circular crest and a circular bottom according to the embodiment.

FIG. 4 is a plan view showing a wavy shape of a side portion of a PC floor plate in a case where a joining portion of a joining rebar is projected from an end face of a wavy shape valley portion of the embodiment.

FIG. 5 is a plan view showing a wavy shape of a side portion of a PC floorboard in a case where a joining iron plate is buried corresponding to a top of the wavy shape of the embodiment.

FIG. 6 is a plan view showing how to join the short sides of the beam and the PC floorboard of the embodiment.

FIG. 7 is a side view taken along a line X ₁ -X ₁ of FIG.

FIG. 8 is a plan view showing how to join long sides of the beam and the PC floorboard of the embodiment.

9 is a side view of the structure shown in FIG. 6 taken along a line X ₂ -X ₂ ;

FIG. 10 is a front view of a section shown in FIG. 6 taken along a line Y ₁ -Y ₁ ;

FIG. 11 is a plan view showing how to arrange reinforcing bars on the lower side of the PC floorboard of the embodiment.

FIG. 12 is a plan view showing how to arrange reinforcing bars and the like on the upper side of the PC floorboard of the embodiment.

FIG. 13 is a plan view showing how to join the joining portions of the PC floorboard of the embodiment.

FIG. 14 is a side view taken along a line X ₃ -X ₃ of FIG.

FIG. 15 is a plan view showing the shape, joining method, and the like of another type of PC floorboard of the embodiment.

FIG. 16 is a side view of the structure shown in FIG. 13 taken along line X ₄ -X ₄ ;

FIG. 17 is a longitudinal sectional view showing a relationship between a short side portion of a PC floor panel located around the building of the embodiment and a building frame.

[Explanation of symbols]

1 building structures 2 Columns 3-7 beams 10, 20, 30 PC floorboard 10a lower surface 10b upper surface 10c long side end surface 10c ₁ of the end face 10d short sides of the unit, 10d ₁ lower half of the end surface 10c _2, 10d ₂ the upper half of the end face 10c ₃ , 10d ₃ steps 11 Lower reinforcing bar 11a Vertical reinforcing bar 11b Horizontal reinforcing bar 11c Wife reinforcing bar 11c ₁ , 11c ₂ Corrugated reinforcing bar 12 Upper reinforcing bar 12a Vertical reinforcing bar 12a ₁ joint portion 12b Horizontal reinforcing bar 12d Fixing reinforcing bar 13 Flowing reinforcing bar 14 , 24 joining the iron plate 14c exposed surface 15 and 25 connecting iron plate 36 through holes A, A ₁ to A ₃ long side portion A ₁ a recess B, B ₁ short side portion Cp cover plate Sd ₁ to SD ₁ stud Sp ₁ ~ Sp ₃ space Sv sleeve Wd ₁ , Wd ₂ weld Wg wedge

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuhiko Seki, 8-21-1, Ginza, Chuo-ku, Tokyo Inside the Tokyo Head Office of Takenaka Corporation (72) Inventor Tsutomu Ikeda 8-21, Ginza, Chuo-ku, Tokyo No. 1 Takenaka Corporation Tokyo Main Store (72) Inventor Tetsuo Mochida 1-5-1, Otsuka, Inzai City, Chiba Pref.

Claims (13)

[Claims] 1. The PC floorboard has a rectangular shape having long sides and short sides in plan view, and at least one of the long sides and short sides of the PC floorboard is corrugated in plan view. The waveform is formed into a shape excluding a pointed portion of a waveform in which each isosceles portion of a number of isosceles triangles formed by continuously arranging the bases of a number of isosceles triangles of the same shape on a straight line, Each P facing
Place a portion of the pair of PC floorboards near the corrugated edge on the steel beam of the building frame so that a space for concrete casting is formed between the end faces of the sides of the C floorboards, A joining portion of a large number of joining reinforcing bars embedded at intervals in each PC floor plate is projected from the end face of the corrugated shape into the space, and the joining projecting into the space from the end face of the corrugated shape of one PC floor plate. The connecting portion of the reinforcing bar and the connecting portion of the connecting bar protruding from the corrugated end surface of the other PC floor plate approach and become substantially parallel, and the connecting portion of the connecting bar substantially parallel in the space. Are joined to each other, a large number of studs with heads are planted at intervals on the upper surface of the steel beam facing the casting space, and concrete is cast in the casting space to form a steel beam. Iron of building frame characterized by joining each PC floorboard and each PC floorboard Method of fixing the PC floor to the beams. 2. The PC floorboard has a rectangular shape having long sides and short sides in plan view, and at least one of the long sides and short sides of the PC floorboard has a wavy shape in plan view. The waveform is formed into a shape excluding a pointed portion of a waveform in which each isosceles portion of a number of isosceles triangles formed by continuously arranging the bases of a number of isosceles triangles of the same shape on a straight line, The corrugated top of one PC floorboard faces the corrugated top of the other PC floorboard, and the corrugated valley of one PC floorboard faces the other PC floorboard. Place the part from the edge of the side of the pair of PC floor boards on the steel beam of the building frame so as to face the corrugated valley of the above, and cast concrete between the end faces of the facing PC floor boards. To form a joint space, and connect the joints of multiple joint reinforcing bars embedded in each PC floor panel from the end face of each valley of the corrugated shape. For joining a reinforcing bar projecting from the corrugated valleys of one PC floorboard into the space and a reinforcing bar protruding from each corrugated valley of the other PC floorboard. So that the parts are close to and substantially parallel to each other, the joining parts of the substantially parallel joining reinforcing bars are joined to each other, and a stud having a head is planted on the upper surface of the steel beam facing the casting space. A method of fixing a PC floor plate to a steel beam of a building frame, wherein concrete is poured into the casting space and the steel beam is connected to each PC floor plate and each PC floor plate. 3. A joining portion of a large number of joining reinforcing bars projecting from the end face of a corrugated valley of a facing PC floor plate into a casting space is bent in substantially the same direction in substantially the same horizontal plane,
By placing the part of the pair of PC floorboards from the edge of the side on the steel beam of the building frame, it is necessary to make the connecting parts of the connecting reinforcing bars of each pair approach each other and become almost parallel. 3. The method for fixing a PC floor panel to a steel beam of a building frame according to claim 2, wherein: 4. A pair of steel sleeves are fitted at intervals into a joint portion of a joint reinforcing bar arranged substantially in parallel, a wedge is pressed into a hole at a central portion of the sleeve, and the joint is inserted into a joint portion of the joint reinforcing bar. 3. The method of fixing a PC floor panel to a steel beam of a building frame according to claim 2, wherein the wedges are bitten and integrated, and the joining portions of the joining rebar are joined to each other. 5. The PC floorboard is provided with two layers of grid-like reinforcing bars buried at intervals above and below, and a vertical reinforcing bar or a horizontal reinforcing bar of an upper grid-like reinforcing bar is formed in a corrugated valley at the edge of the PC floorboard. The steel frame of a building skeleton according to any one of claims 1 to 4, wherein a PC floor panel is used, which is protruded from an end surface, and the protruding rebar portion forms a joining portion of a joining rebar. How to fix PC floorboard to beam. 6. A PC floor panel in which two floors are vertically spaced.
In the side part where the joint part of the joint reinforcement reinforced with the lattice reinforcement of the layer and embedded in the PC floorboard projects from the end face of the corrugated valley, the wavy end of the lower half of the PC floorboard There is a step between the wavy edge of the lower half of the PC floorboard and the wavy edge of the upper half of the PC floorboard. 6. The PC floorboard according to claim 1, wherein the upper half corrugated edge uses only the stepped portion protruding from the lower half corrugated end face of the PC floorboard. To steel beam of building frame
How to fix C floorboard. 7. The PC floorboard has a rectangular shape having long sides and short sides in plan view, and at least one of the long sides and short sides of the PC floorboard has a wavy shape in plan view. The waveform is formed into a shape excluding a pointed portion of a waveform in which each isosceles portion of a number of isosceles triangles formed by continuously arranging the bases of a number of isosceles triangles of the same shape on a straight line, Each P facing
Place the portion of the pair of PC floorboards from the side edges on the steel beam of the building frame so that a space for concrete casting is formed between the corrugated end faces of the sides of the C floorboard, Each of the PC floor plates has a joining iron plate joined to an end of a fixing reinforcing bar.
Fixing reinforcing bars and joining iron plates joined to a number of joining iron plates are embedded in the PC floor plate so as to be spaced apart from the corrugated end surface of the floor plate. The upper surface of each joining iron plate is exposed in the recess formed on the upper side, and an elongated connecting iron material is arranged between the corresponding joining iron plates of both PC floor boards, and the joining iron plate of each connecting iron material is provided. The corresponding portion is welded to the joining iron plate, a large number of studs having heads are planted at intervals on the upper surface of the steel beam facing the casting space, and concrete is poured into the casting space. P to the steel beam of the building frame characterized by installing and connecting the steel beam to each PC floorboard and each PC floorboard.
How to fix C floorboard. 8. The shape of the PC floorboard is rectangular having long sides and short sides in plan view, and at least one of the long sides and short sides of the PC floorboard is corrugated in plan view. The waveform is formed into a shape excluding a pointed portion of a waveform in which each isosceles portion of a number of isosceles triangles formed by continuously arranging the bases of a number of isosceles triangles of the same shape on a straight line, The pair of PC floorboards has the corrugated top of one PC floorboard facing the corrugated top of the other PC floorboard, and the pair of PC floorboards has the corrugated valley of one PC floorboard facing the other PC floorboard. Place the part from the edge of the side of the pair of PC floor boards on the steel beam of the building frame so as to face the corrugated valley, and cast concrete between the end faces of the facing PC floor boards. A space is formed, and on each of the PC floor plates, a joining iron plate joined to an end of a fixing reinforcing bar having a predetermined length is substantially horizontal and P Each fixing rebar and the joining iron plate joined to a large number of joining iron plates are embedded in the PC floor plate so as to come to a portion from the edge corresponding to the corrugated top of the floor plate. The upper surface of each joining iron plate is exposed in the recess formed on the upper side, and an elongated connecting iron material is arranged between the corresponding joining iron plates of both PC floor boards,
A portion corresponding to the joining iron plate of each connecting iron material is welded to the joining iron plate, and a large number of studs with heads are planted at intervals on the upper surface of the steel beam facing the casting space, A method of fixing a PC floor plate to a steel beam of a building frame, wherein concrete is poured into the casting space and the steel beam is connected to each PC floor plate and each PC floor plate. 9. A joining iron plate is embedded corresponding to every other or two or more tops of the corrugations of the facing PC floor plate, and is opened upward of the PC floor plate above each joining iron plate. And the upper surface of each joining iron plate is exposed in a concave portion formed to reach the corrugated end surface of the PC floor plate.
The method for fixing a PC floor plate to a steel beam of a building frame according to claim 7 or 8, wherein a floor plate is used. 10. A PC floorboard is provided with two layers of grid-like reinforcing bars buried at intervals above and below, and ends of fixing reinforcing bars of a predetermined length above the vertical reinforcing bars and the horizontal reinforcing bars of the upper grid-like reinforcing bars. The method for fixing a PC floor plate to a steel beam of a building frame according to any one of claims 7 to 9, wherein a PC floor plate in which a joining iron plate joined to a part is embedded is used. 11. The PC floorboard is reinforced with two layers of lattice reinforcing bars vertically spaced from each other, and is bent in a wavy shape along the end surface of the wavy edge around the lower lattice reinforcing bars. The main wife reinforcement is arranged, and the lower half of the PC floor plate is reinforced with a flat wife reinforcement beyond the wavy edge, and the upper half edge of the PC floor plate that does not correspond to the embedded part of the joint steel plate At the top of the corrugation and the edges other than the vicinity, there is a step between the corrugated edge of the lower half of the PC floorboard and the corrugated edge of the upper half of the PC floorboard. The upper half corrugated edge protrudes from the lower half corrugated end face of the PC floor panel only by the step, and the upper half corrugated edge corresponding to the buried portion of the joining iron plate of the PC floor panel. For the top part and the edge part near the top part, the top part of the corrugation of the upper half part and the end face near it are the top part of the corrugation part of the lower half of the PC floorboard and the vicinity. Method of fixing PC floor to steel beams of building structures according to any one of claims 7 to 10, wherein the use of PC floor which is the end face flush. 12. A case in which a PC floor plate is placed on a steel beam having a cover plate fixed to the steel beam by a number of bolts and nuts on the upper surface of the steel beam, and the PC floor plate is fixed to the steel beam. A large concave portion is formed in a portion of the PC floorboard in plan view that is larger than the edge corresponding to the cover plate, and a portion parallel to the edge of the concave portion has the same wave shape as the waveform of the other edge portion. A mold is formed, and a joining iron plate is buried in a portion corresponding to the top of the corrugation of the concave portion, or a joining portion of the joining reinforcing bar protrudes from an end surface of a valley of the corrugation of the concave portion.
The method of fixing a PC floor plate to a steel beam of a building frame according to any one of claims 1 to 11, wherein a C floor plate is used. 13. The shape of a PC floor panel is a rectangular shape having a long side portion and a short side portion in a plan view, and the base shape of a plurality of isosceles triangles of the same shape is continued on a straight line. A number of isosceles triangles are arranged side by side to form a shape excluding the sharp part of the waveform where each equilateral part is continuous, and the joining parts of a large number of joining rebars embedded in each PC floorboard are waved on the short side. Protruding from the end face of the mold valley, so that the joining iron plate joined to the end of the fixing reinforcing bar is located at the portion corresponding to the top of the corrugation on the long side of the PC floor plate, and is substantially horizontal, Each anchoring reinforcing bar and each joining iron plate joined to a large number of joining iron plates are embedded in the PC floor plate, and at least a part of the upper surface of each joining iron plate is exposed in a concave portion formed above each joining iron plate. PC floorboard characterized by being made.