JP4418337B2 - Floor forming method and floor forming structure - Google Patents

Description

  The present invention relates to a floor forming method and a floor forming structure. More specifically, for example, the present invention relates to a floor forming method and a floor forming structure for forming a concrete slab floor into a steel frame.

  Conventionally, as shown in FIG. 10, a deck composite slab floor formed by placing concrete 102 on a deck plate 101 is formed using a steel frame 103. It is generally done by welding. In the figure, reference numeral 104 represents a reinforcing bar, reference numeral 105 represents a forehead cover, and reference numeral 106 represents a width adjusting plate.

  However, the formation by such a conventional method is not easy to dismantle, and even if dismantled, the steel frame 103 is damaged by welding, so that it is difficult to reuse (reuse) or reduce the steel frame. There is a problem.

  In order to solve this problem, it is conceivable to form holes in the deck plate and the steel frame body in advance and fix them with bolts or the like. However, with this technique, there are cases where it is difficult to match the holes due to the effects of construction accuracy at the site.

  In addition, it is conceivable that the steel frame and the floor are pre-panelized at the factory. However, in this case, there is a problem that the weight increases and it is difficult to transport to the site.

  The present invention has been made in view of the problems of the prior art, and provides a floor forming method and a floor forming structure in which a member such as a steel frame can be easily reused without particularly increasing the number of man-hours at a construction site. It is aimed.

Floor forming method of the present invention is a floor forming method for forming a deck synthetic slab floor formed by Da設the concrete deck plate, a plate member for attaching the deck plate to the skeleton, such as steel in parallel regularly spaced attached to the procedure freely provided detachable, the procedure covered by the hat-shaped member a gap of the plate, or comprise a step of attaching by welding the deck plate to said plate member, or deck plate precursor, such as steel Te Including a procedure for removably providing plate members in parallel arrangement at regular intervals, a procedure for attaching a deck plate to the plate material by welding, and a procedure for disposing auxiliary material so as to straddle the boundary of the plate material characterized in that it Italy.

  In the floor formation method of this invention, it is preferable to attach the said member to housings, such as a steel frame, in a factory.

The floor forming structure of the present invention is a floor forming structure for forming a deck composite slab floor formed by placing concrete on a deck plate, and is detachably provided in a parallel arrangement at regular intervals on a frame such as a steel frame. a plate member for attaching the deck plate, and the hat-shaped member which covers the gap between the plate, in a parallel regularly spaced leads and a deck plate attached by welding to the plate member, or the precursor of such steel It comprises a plate material to which a deck plate provided detachably is provided, a disassembly auxiliary material arranged so as to straddle the boundary, and a deck plate attached to the plate material by welding. To do.

  In the floor forming structure of the present invention, the member is, for example, a plate material, and is attached to a housing such as a steel frame with bolts and nuts.

  Moreover, in the floor formation structure of this invention, it is preferable that the part which protrudes from the board | plate material of a volt | bolt and nut fastening is covered with the pipe material or the tube member.

  According to the present invention, an excellent effect is obtained that a floor that can be easily disassembled can be formed.

  Hereinafter, although the present invention is explained based on an embodiment, referring to an accompanying drawing, the present invention is not limited only to this embodiment.

Embodiment 1
FIG. 1 is a perspective view showing a main part of a floor forming structure to which a floor forming method according to Embodiment 1 of the present invention is applied.

  As shown in the figure, this floor forming structure K is a floor forming structure for forming a deck composite slab floor 2 (see FIG. 2, hereinafter simply referred to as a floor) on a steel frame 1 made of an H-shaped steel frame. It is assumed that the floor 2 is formed by attaching the deck plate 4 which is a constituent member of the floor 2 to the plates 3 and 3 which are attached in advance to the upper flange 1a of the steel frame 1 by performing, for example, the quenching plug welding 3d.

  Here, the floor 2 is formed by placing the concrete 2a on the deck plate 4 and further providing the floor finishing material 2b thereon.

  Bolt insertion through holes (not shown) are provided at corresponding positions of the plate 3 and the steel frame 1, and bolts 3 a (the bolts are medium bolts, high strength bolts, one-side bolts, etc.) inserted through the holes. The plate 3 is previously joined to the steel frame 1 in the factory by the nut 3b. Here, the length of the plate 3 is adjusted so that the disassembly in the disassembly procedure described later can be performed smoothly. That is, the length is adjusted so as to match the interval between the peaks 4a, 4a of the deck plate 4 cut at the time of dismantling.

  Further, the gap 3c between the plates 3 attached to one steel frame 1 is covered so that both hems of the hat-shaped plate 5 are joined to each plate 3. Here, as shown in FIG. 3, the height 5 a of the hat-shaped plate 5 is equal to the height of each mountain of the deck plate 4.

  Further, the shape of the deck plate 4 may be either a wide groove type or a narrow groove type, and is not particularly limited. The shape of the fore edge is not particularly limited.

  Hereinafter, the construction procedure and the dismantling procedure in the floor forming structure K of the first embodiment will be described.

1. Construction procedure (1) The deck plate 4 is attached to the plate 3 by the quenching welding 3d. At this time, as shown in FIG. 4, the deck plate 4 is supported for each steel frame 1 used as a large beam by a simple support method. In the figure, reference numeral 11 indicates a pillar, and reference numeral 12 indicates a beam. Moreover, as shown in FIG. 2, the position where the temper welding 3d is performed is set to a position that does not overlap the steel frame 1 when viewed from above. As a result, the steel frame 1 can be reliably prevented from being damaged during welding.

  (2) A pipe 6 is erected on the plate 3 so as to surround the bolt 3a so that the concrete 21 does not enter around the bolt 3a, and a material excellent in fire resistance and sound insulation performance (eg, rock wool) is used in the pipe. Fill with a filling (not shown). Here, the tube material 6 can be formed using steel, resin, paper, or the like as a material. Moreover, the axial length (height from the plate 3) of the pipe material 6 is made substantially equal to the thickness of the concrete 2a.

  (3) After placing the concrete 2a, the floor finish 2b is attached.

2. Dismantling Procedure (1) As shown in FIG. 5, the floor 2 (concrete 2a, deck plate 4) is cut by a concrete cutter or the like at the crest 4a of the deck plate 4. The position of the peak 4a of the deck plate 4 can be easily known from the arrangement of the bolts 3a.

  (2) About the orthogonal direction, the floor 2 is cut | disconnected with a concrete cutter etc. in the peak part of the hat-shaped plate 5. FIG.

  (3) Take out the nail in the pipe 6 and loosen and remove the bolt 3a.

  (4) Engage a wire or the like with a pre-embedded hardware (not shown), and lift and remove the floor slab cut in steps 1 and 2 above.

  As described above, the floor forming structure K of the first embodiment does not directly attach the floor 2, more specifically the deck plate 4, to the steel frame 1, but mechanically attaches the plate 3 to the steel frame 1 by bolting. In addition, since the floor 2 is provided by attaching the deck plate 4 by means of, for example, tempering plug welding, the floor 2 can be provided on the structural frame 1 without causing damage to the steel frame 1 by welding. Therefore, the steel frame 1 can be reused without requiring repair work after dismantling.

  Further, by simply bolting the plate 3 to the flange portion 1a of the steel frame 1 at the factory, the deck plate 4 can be joined at the site by the conventional inexpensive tempering plug welding, thereby suppressing an increase in cost. be able to.

  Further, by cutting the concrete slab more specifically from the floor 2, the floor slab itself can be removed cleanly, and dust during dismantling can be suppressed.

  Further, the floor 2 (concrete slab) to be removed is plate-shaped, and does not become a block with irregular sizes as when broken by a crusher, so that the removal work can be performed efficiently.

Embodiment 2
The principal part of the floor forming structure K1 to which the floor forming method according to Embodiment 2 of the present invention is applied is shown in FIG. 6 and FIG. 7 as a sectional view and a plan view, respectively. The second embodiment is obtained by modifying the first embodiment, and ensures the ease of disassembly without cutting the deck plate 4 at the position of the plate 3.

  Specifically, as shown in FIGS. 6 and 7, the floor forming structure K <b> 1 includes a beam (or small beam) 20 with the disassembly assisting member 21 straddling the plates 3 and 3 at the boundary between the plates 3 and 3. It shall be arrange | positioned along the longitudinal direction of this. Further, the position of the bolt 3a that joins the plate 3 to the beam (or small beam) 20 with bolts and nuts is made to coincide with the valley 4b of the deck plate 4 as shown in FIG. In FIG. 7, black circles indicate temper plug welding.

  As shown in FIG. 8, the disassembly assisting member 21 includes a flat plate (see FIG. 8A) 22 provided in accordance with the pitch of the valleys 4 b of the deck plate 4 with the trapezoidal protrusions 23 facing each other. The protruding portion 23 is formed by bending downward at a right angle. The horizontal portion 24 of the flat plate 22 has a width sufficient to straddle the plates 3 and 3, and the projecting portion 23 is in a state where the inner surface of the horizontal portion 14 is in contact with the mountain 4 a of the deck plate 4. It is formed so as to be fitted in the valley 4b in a close contact state.

  Hereinafter, the construction procedure and the disassembly procedure in the floor forming structure K1 of the second embodiment will be described with reference to FIG.

1. Construction procedure (1) Attach the middle part of the deck plate 4 to the plate 3 by means of quenching welding. At this time, as shown in FIG. 9, the intermediate portion of the deck plate 4 is supported by the small beam by the simple support type. A through hole 4c is formed in advance at a location corresponding to the valley bolt 3a of the deck plate 4.

  (2) A pipe 6 is erected on the plate 3 so as to surround the bolt 3a so that the concrete 2a does not enter around the bolt 3a, and a material excellent in fire resistance and sound insulation performance (eg, rock wool) is used in this pipe. Fill with a filling (not shown). Here, the tube material 6 can be formed using steel, resin, paper, or the like as a material. Moreover, the axial length (height from the plate 3) of the pipe material 6 is made substantially equal to the thickness of the concrete 2a.

  (3) After placing the concrete 2a, the floor finish 2b is attached.

2. Dismantling procedure (1) The floor 2 (concrete 2a, deck plate 4) is cut with a concrete cutter or the like at the crest 4a of the deck plate 4 (see FIG. 5). The position of the peak 4a of the deck plate 4 can be easily known from the arrangement of the bolts 3a.

  (2) About the orthogonal direction, the floor 2 is cut with a concrete cutter or the like at the horizontal portion 24 of the disassembly assisting member 21.

  (3) Take out the nail in the pipe 6 and loosen and remove the bolt 3a.

  (4) Engage a wire or the like with a pre-embedded hardware (not shown), and lift and remove the floor slab cut in steps 1 and 2 above.

  As described above, in the floor forming structure K1 of the second embodiment, the floor 2 can be provided on the structural housing 1 without causing the weld 20 to be damaged by welding as in the first embodiment. Therefore, it is possible to reuse the steel frame 1 such as the beam 20 without requiring repair work or the like after dismantling.

  The present invention can be applied when a floor is attached to a steel frame.

It is a disassembled perspective view which shows the principal part of the floor formation structure which concerns on Embodiment 1 of this invention. It is sectional drawing of the structure. It is a perspective view which shows the hat-shaped flame | frame used for the structure. It is a general view of the structure. It is a figure which shows typically the disassembly procedure of the same structure. It is sectional drawing which shows the principal part of the floor formation structure which concerns on Embodiment 2 of this invention. It is the same top view. It is detail drawing of the disassembly assistance member of the same embodiment, Comprising: The same (a) shows an expanded view, The same (b) shows a front view. It is a principal part detailed sectional view of the embodiment. It is a disassembled perspective view which shows the conventional floor formation structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Steel frame 2 Floor 3 Plate 3a Bolt 3b Nut 4 Deck plate 5 Hat-shaped plate 6 Pipe material 20 Beam (or small beam)
21 Disassembly assistance member 23 Protrusion part 24 Horizontal part K Floor formation structure

Claims (7)

A floor forming method for forming a deck composite slab floor formed by placing concrete on a deck plate,
The procedure freely provided detachably in a parallel regularly spaced a plate member for attaching the deck plate to the skeleton, such as steel,
A procedure for covering the gap between the plate members with a hat-shaped member;
Floor forming method characterized in that it includes a procedure for attaching by welding the deck plate to said plate member. A floor forming method for forming a deck composite slab floor formed by placing concrete on a deck plate,
A procedure for detachably attaching a plate material for attaching a deck plate to a frame such as a steel frame in a parallel arrangement at regular intervals;
Attaching the deck plate to the plate by welding;
Procedure for disposing disassembly aid material across the boundary of the plate material
The floor formation method characterized by including these. The floor forming method according to claim 1 or 2, wherein the plate material is attached to a frame such as a steel frame at a factory. A floor forming structure for forming a deck composite slab floor formed by placing concrete on a deck plate,
A plate member for attaching the deck plate detachably provided in a parallel arrangement at regular intervals precursor such as steel, and the hat-shaped member which covers the gap between the plate and the deck plate attached by welding to the plate member A floor forming structure characterized by comprising: A floor forming structure for forming a deck composite slab floor formed by placing concrete on a deck plate,
A plate material to which a deck plate provided in a detachable manner in parallel arrangement at regular intervals is attached to a frame such as a steel frame, a disassembly auxiliary material arranged so as to straddle the boundary, and attached to the plate material by welding A floor forming structure comprising a deck plate. The floor forming structure according to claim 4 or 5 , wherein the plate member is attached to a housing such as a steel frame by bolts and nuts. 6. The floor forming structure according to claim 4 or 5 , wherein a portion protruding from the plate material of the bolt and nut fastening is covered with a pipe material or a tube member.

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