JP3356684B2 - Slab structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slab structure in which a plurality of panels are laid out to form a floor or a roof, and more particularly to a slab structure in which the axis of a reinforcing bar can be easily aligned with the center of a joint. is there.

[0002]

2. Description of the Related Art A floor slab and a roof slab are sometimes arranged by laying a plurality of panels. For example, as a slab structure that can exhibit high rigidity, there is a technique disclosed in Japanese Patent Application Laid-Open No. 7-207797. According to this technique, as shown in FIGS. 7 and 8, a screw 54 having an annular portion at the head is disposed at a corner 53 of an ALC plate 52 laid on a beam 51 and a long side of the ALC plate 52 is provided. A joint reinforcing bar 56 is arranged over the entire length of the joint joint portion 55 along with and fixed to the beam 51 via the screw 54,
The mortar 57 is filled in the joint joint 55. In particular, the joint reinforcing bar 56 is formed in an L-shape in which the axis is bent at a right angle near the end, and this L-shaped end is screwed.
The screw 54 is inserted through an annular portion formed on the head of the screw 54.
And is fixed to the beam 51.

[0003] In the slab structure configured as described above, the joint reinforcing bar 56 is arranged over the entire length of the joint joint 55 and is fixed to the beam 51 via the screw 54.
The ALC panel 52 can be pressed against the beam 51 by the beam, and the plurality of ALC panels 52 laid side by side are joined to the joint reinforcing bar 56.
And mortar 57. For this reason, it is possible to realize a rigid floor structure in which the horizontal rigidity of the entire configured slab is increased.

In the slab in which the panels 52 are laid and arranged as described above, the size of the joint joints 55 formed between the panels 52 is generally not large, and the joint reinforcing bars 56 arranged in the joint joints 55 are not provided. Is preferably buried along the center in the width direction of the connection joint 55.

[0005]

In particular, when a plurality of laid-out panels are integrated via a reinforcing bar, it is necessary to arrange the reinforcing bars at joints formed in the row direction and the column direction, respectively. In this case, rebars in two directions to four directions are concentrated at intersections of joints.

In this case, when the screws disclosed in the above publication are arranged at the intersections of joints, two to four screws are required for each direction, and it is difficult to fix them to the narrow joints. Even if the screws can be fixed, these screws become independent, and the continuity of the reinforcing bar at the intersection of the joints is hindered, which causes a problem that a discontinuous portion is formed. For this reason, a special receiving metal fitting that can lock the reinforcing steel in each direction is required.

[0007] For example, as shown in FIG.
A fixing member 60 having a mounting hole in a direction perpendicular to the fixing hole is fixed to the beam 51, and two joint reinforcing bars arranged in the mounting hole in one straight line direction.
When the L-shaped ends of the 56 are inserted and locked, respectively, the joint reinforcing bar 56 can be arranged at the center of the joint joint 55, but the L-shaped end of the joint reinforcing bar 56 has a straight bent portion. Since it exists on only one side of the portion, there is a problem that a margin for adjustment when locked to the receiving bracket 60 is small, and the position of the receiving bracket 60 with respect to the connection joint 55 is limited to an extremely narrow portion.

An object of the present invention is to provide a slab structure using a reinforcing bar which can be easily aligned with the center of a joint formed between panels.

[0009]

In order to solve the above-mentioned problems, a slab structure according to the present invention is characterized in that mortar is filled in joints of a plurality of panels arranged on a floor mounting portion or a roof mounting portion of a building. In a slab structure in which a linear reinforcing bar is embedded in a mortar, a receiving bracket is attached to a floor mounting portion or a roof mounting portion near a corner of a panel, and the receiving bracket is orthogonal to the longitudinal direction of the joint portion. A mounting hole for inserting the reinforcing bar from the direction is provided, and the end of the linear reinforcing bar buried in the joint is curved laterally from the axis of the linear portion of the reinforcing bar, and the tip is substantially straight to the opposite side of the axis. locking portion extended to Jo are <br/> formed, in which the locking portion is attached to the mounting hole of the receiving metal.

In the above-mentioned slab structure, a receiving bracket having a mounting hole through which a reinforcing bar is inserted from a direction orthogonal to the longitudinal direction of the joint is attached to a floor mounting portion or a roof mounting portion near the corner of the panel. The end of the mounting hole is curved laterally from the axis of the straight part and the end is substantially straight to the opposite side of the axis.
Because mounting the engaging portion of the reinforcing bar locking portion extending linearly are formed, it can be engaged with the mounting hole in any part between the curved portion and the distal portion of the reinforcing bars. For this reason,
The allowance for adjusting the insertion depth for the mounting holes in the reinforcing bars increases,
The degree of freedom in the arrangement position of the reinforcing bar at the joint can be improved.

[0011] In the above slab structure, the end of the rebar is made of iron.
Curved in a U-shape in the horizontal direction from the axis of the straight part of the muscle,
It is preferable that a locking portion whose end extends substantially linearly to the opposite side of the axis is formed . By configuring the slab structure in this way, the end of the reinforcing bar has a crank shape, and when it is locked in the mounting hole of the receiving bracket, the corner of the panel can be avoided, so that the joint at the joint of the reinforcing bar can be avoided. The degree of freedom of the arrangement position can be further improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the above slab structure will be described below with reference to the drawings. 1 is a plan view showing a roof slab structure, FIG. 2 is a cross-sectional view showing a configuration of a joint portion viewed from an arrow II in FIG. 1, and FIG. 3 is a cross-section showing a configuration of a joint portion viewed from an arrow III in FIG. FIG. 4 is a diagram illustrating a configuration of a reinforcing bar, FIG. 5 is a diagram illustrating an example of a receiving bracket, and FIG. 6 is a diagram illustrating a relationship between the reinforcing bar and the receiving bracket.

In the slab structure according to the present embodiment, when realizing a so-called rigid floor structure, the axis of the reinforcing bar arranged at the joint formed between the laid panels is positioned at the center of the joint. It is possible to adjust, especially,
The present invention relates to a slab structure which is advantageous when joints where reinforcing bars are arranged in a row direction and a column direction cross each other.

The slab structure according to this embodiment will be specifically described. As shown in FIG. 1 to FIG.
Are laid in a column direction and a row direction on a beam 2 serving as a floor mounting portion or a roof mounting portion, and joint portions 3 are formed in the long side direction and the short side direction of the adjacent panel 1. A receiving bracket 4 is attached to the panel 1 located at the corner of the laid-out plane and the beam 2 near the corner of the panel 1 arranged at a predetermined position in the row direction. Reinforcing bars 5 embedded in joints 3 are attached to metal fittings 4, and joints 3 are filled with mortar 6.

A plurality of types of receiving fittings are used as described later. However, when the shape does not matter, the receiving fitting 4 is representatively used.

Panel 1 is made of lightweight cellular concrete (AL
C) It is composed of a panel such as a panel or a PC panel, and at least both ends in the longitudinal direction are placed on the beam 2 and laid in the width direction (row direction) and the longitudinal direction (column direction) of the panel 1.

On each side (long side) of each panel 1 in the width direction, steps (not shown) for forming joint portions 3 are formed over the entire length. The step portion is formed by notching at a right angle to a predetermined portion in the thickness direction of the panel 1, and the joint portion 3 having a rectangular cross section is formed by the step portion formed on the adjacent panel 1.

A bracket 4 is fixed to the beam 2 near the corner of the panel 1 by bolts 7, and an end of a reinforcing bar 5 is attached to the bracket 4. As shown in FIG. 4, the reinforcing bar 5 has an end portion in the longitudinal direction that is bent laterally from the axis 5 b of the linear portion 5 a of the reinforcing bar 5 to form an eccentric portion 5 c, and then refracts in the original direction. A locking portion having an extension 5e whose tip 5d extends substantially linearly to the opposite side of the axis 5b is formed. For this reason, the axis 5b in the straight portion 5a and the axis 5b in the eccentric portion 5c are separated by a predetermined distance.

In this embodiment, the reinforcing bar 5 has a total length substantially equal to the length of the panel 1 or a predetermined value shorter than the panel 1, and the extension 5e has a length of about 35 mm.
The distance between the axis 5b of the straight portion 5a and the axis 5b of the eccentric portion 5c is set to about 17 mm. The straight part 5a to the eccentric part 5c are connected by an inclined part 5f. Therefore, the extension of the axis 5b of the straight portion 5a intersects with the extension 5e.

The inclined portion 5f is not always necessary,
The straight portion 5a and the eccentric portion 5c may be directly connected to form a U-shape.

The reinforcing bars 5 configured as described above are buried in the joints 3 between the panels 1 laid in the row direction and the joints 3 between the panels 1 laid in the column direction, and form a slab. Along with the step formed on the long side of the panel 1 disposed at the end in the direction, the curved end is attached to the receiving bracket 4.

The receiving bracket 4 for attaching the end of the reinforcing bar 5 includes:
According to the arrangement position in the slab and the number of reinforcing bars 5 to be attached, plural types are used as shown in FIGS.

The receiving bracket 4 shown in FIG. 1A is for mounting a reinforcing bar 5 arranged in four directions, and includes a fixing piece 4a for fixing to the beam 2 and a mounting piece 4 standing upright at a right angle to the fixing piece 4a.
b, and two mounting holes 4c for inserting the extension 5e of the reinforcing bar 5 and one elongated hole-shaped mounting hole 4d for inserting the eccentric portion 5c are formed in the mounting piece 4b. In this receiving bracket 4, it is possible to attach up to four reinforcing bars 5 which are arranged between the rows and rows of the laid panels 1 and buried in the respective directions. Each of the mounting holes 4c and 4d can be inserted into the longitudinal direction of the joint portion 3 and the end of the reinforcing bar 5 arranged in a direction orthogonal to the joint direction so as to engage with the extension portion 5e or the eccentric portion 5c. It is configured.

In the receiving member 8 shown in FIG. 2B, a fixing piece 8a and a mounting piece 8b are formed at right angles, and one piece is attached to the mounting piece 8b.
This is one in which eight elongated mounting holes 8d are formed. In this receiving member 8, one rebar 5 can be attached by inserting the eccentric portion 5 c into the attachment hole 8 d, and is disposed at the end of the panel 1 in the row direction.

The receiving metal member 9 shown in FIG. 3C is for mounting a reinforcing bar 5 arranged in four directions in the same manner as the receiving metal member 4, and has a fixing piece 9a provided with mounting pieces 9b standing upright in four directions. ing. Each mounting piece 9b is formed with a mounting hole 9c through which the extension 5e is inserted.

The receiving metal fitting 10 shown in FIG. 3D is for mounting the reinforcing bar 5 in two directions perpendicular to each other. The mounting metal 10 is provided with mounting pieces 10b which stand in the direction perpendicular to the fixing pieces 10a.
Is provided with a mounting hole 10c. Further, the receiving bracket 11 shown in FIG. 3E is formed by using an angle material.
It has a fixing piece 11a and a mounting piece 11b, and the mounting piece 11b is provided with an elongated mounting hole 11d.

The receiving fitting 12 shown in FIG. 1F has a pipe 12b fixed to a fixing piece 12a and mounting holes 12c provided in four directions of the pipe 12b. Even with the bracket 12 configured as described above, it is possible to attach the ends of the reinforcing bars 5 arranged in four directions.

A reinforcing bar 5 is attached to the receiving bracket 4 constructed as described above.
The procedure for mounting the reinforcing bar 5 and aligning the axis 5b of the reinforcing bar 5 with the center of the joint 3 will be described with reference to FIG. In the figure, the mounting hole 4c formed in the receiving bracket 4 is
Is configured to be able to be inserted from the direction orthogonal to the joint 3 in the longitudinal direction. Therefore, the mounting hole 4c
When the extension 5e of the reinforcing bar 5 is inserted and locked, the rod 5 has a high degree of freedom in the linear movement in the mounting hole 4c.

The receiving member 4 and the reinforcing bar 5 configured as described above
When the bent portion formed at the end of the reinforcing bar 5 is inserted into the mounting hole 4c of the metal fitting 4 and the axis 5b of the straight portion 5a does not coincide with the center of the joint portion 3, the extension portion of the reinforcing bar 5 is formed. 5
e is moved in the longitudinal direction so that the axis 5b of the linear portion 5a
Is moved in the width direction of the joint 3 so that the axis 5 b
Can be adjusted and positioned at the center of the joint 3.

Next, a slab structure formed by using the above members will be described with reference to FIGS. As shown in FIG. 1, reinforcing bars 5 are arranged at joints 3 formed between panels 1 arranged at both end portions in the row direction of the slabs 1 arranged side by side and panels 1 in a predetermined row. For this reason, the receiving metal fittings 4 (8 to 12) are arranged at positions where the reinforcing bars 5 are to be arranged, and the fixing pieces 4a are fixed to the beams 2 by the bolts 7 respectively.

That is, as shown in FIG. 2, a receiving metal fitting 10 is arranged near the corner of the panel 1 arranged on the end side of the slab and is fixed to the beam 2 at a position corresponding to the corner of the slab. ,
A receiving bracket 4 is arranged near the other end of the panel 1 and fixed to the beam 2. In addition, a panel 2 for a waist wall (not shown), an angle material serving as a member for receiving mortar, and the like are fixed to the beam 2 so as to face the panel 1 disposed on the end side of the slab.

Reinforcing bars 5 are arranged along the widthwise ends of the panel 1 in the mounting holes 4c of the receiving fittings 10 and 4, respectively. Each reinforcing bar 5 has an extended portion 5e of the end inserted into the mounting hole 4c. Attached. Thus, the position of the linear portion 5a relative to the joint 3 can be adjusted by appropriately adjusting the mounting position of the extension 5e with respect to the mounting holes 10c, 4c of the reinforcing bar 5 mounted on the receiving fittings 10, 4. is there.

As shown in FIG. 3, a receiving metal fitting 8 is arranged near a corner of the panel 1 corresponding to a predetermined joint 3 and fixed to the beam 2. Mounting hole 8 of this bracket 8
The eccentric part 5c of the reinforcing bar 5 is inserted and attached to d, and the straight part 5a is arranged at the joint part 3. When the extension 5e of the reinforcing bar 5 is inserted into the mounting hole 8d of the receiving fitting 8 and the eccentric portion 5c is engaged with the mounting hole 8d, the position of the eccentric portion 5c with respect to the mounting hole 8d is adjusted and the eccentric portion 5c is adjusted. By rotating the reinforcing bar 5 around the center, the position of the axis 5b of the linear portion 5a at the joint portion 3 can be adjusted.

The receiving bracket 4 fixed to the beam 2 as described above
Reinforcing bar 5 is attached to joints 3 of linear portions 5a of rebar 5
The mortar 6 is filled around the slab including the joints 3 and the upper surface of the beam 2 by adjusting the position in
A slab structure is configured.

[0035]

As described above in detail, in the slab structure according to the present invention, the reinforcing rod is inserted from the direction perpendicular to the longitudinal direction of the joint through the mounting hole of the receiving bracket mounted near the corner of the laid panel. After bending the end of the rebar once from the axis, it is further bent and the tip is formed to extend substantially linearly on the opposite side of the eccentric part. By inserting and engaging the mounting hole, the position of the extension formed at the end of the reinforcing bar with respect to the mounting hole can be appropriately adjusted. Therefore, the position of the axis of the reinforcing bar with respect to the joint can be appropriately adjusted, and the axis of the reinforcing bar can be easily aligned with the center of the joint.

Further, since the axial position of the reinforcing bar at the joint can be easily adjusted, the workability can be improved and the cost can be reduced.

The end of the reinforcing bar is aligned with the axis of the linear portion of the reinforcing bar.
From the left to the opposite side of the axis.
In the case where the locking portion extending in a substantially linear shape is formed, the reinforcing bar does not interfere with other members even when the end portion of the reinforcing bar is attached to the fitting, so that the joint portion of the axis line is formed. It is possible to improve the workability by increasing the adjustment allowance for the position in the work.

[Brief description of the drawings]

FIG. 1 is a plan view showing a roof slab structure.

FIG. 2 is a cross-sectional view showing a configuration of a joint part of a part viewed from an arrow II in FIG.

FIG. 3 is a cross-sectional view showing a configuration of a joint portion viewed from an arrow III in FIG. 1;

FIG. 4 is a diagram showing a configuration of a reinforcing bar.

FIG. 5 is a diagram illustrating an example of a receiving fitting.

FIG. 6 is a diagram illustrating a relationship between a reinforcing bar and a receiving fitting.

FIG. 7 is a diagram illustrating a conventional slab structure capable of exhibiting high rigidity.

FIG. 8 is a diagram illustrating a conventional slab structure capable of exhibiting high rigidity.

FIG. 9 is a diagram illustrating a problem.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Panel 1a Step part 2 Beam 3 Joint part 3a Entrance part 3b Inside 3c Enlarged joint part 4 Receiving bracket 4a Fixing piece 4b Mounting piece 4c, 4d Mounting hole 5 Reinforcing bar 5a Linear part 5b Axis 5c Eccentric part 5d Tip 5e Extension Part 6 Mortar 7 Bolts 8, 9, 10, 11, 12

Continuation of the front page (56) References JP-A-3-122341 (JP, A) JP-A-7-217081 (JP, A) JP-A-62-174430 (JP, A) JP-A-62-174432 (JP , A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 5/02 E04B ⁷ /00-7/02 E04G 21/12

Claims (2)

(57) [Claims] 1. A slab structure in which mortar is filled in joints of a plurality of panels laid out on a floor mounting portion or a roof mounting portion of a building, and a straight reinforcing bar is buried in the mortar. A mounting bracket is attached to a floor mounting section or a roof mounting section in the vicinity of the section, and a mounting hole for inserting a reinforcing bar from a direction orthogonal to the longitudinal direction of the joint section is provided in the receiving metal section and embedded in the joint section. and further the tip curved laterally is engaging portion extending substantially in a straight line to the opposite side of the axis line forming the end portion of the straight reinforcing bars from the axis of the linear portion of the rebar that, the locking portion is received A slab structure characterized by being attached to a mounting hole of a bracket. 2. An end of the reinforcing bar is an axis of a straight line portion of the reinforcing bar.
From the left to the opposite side of the axis.
The slab structure according to claim 1, wherein a locking portion extending substantially linearly is formed in the slab.