JPH11148219A - Laying structure for pc block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate laying work, eliminate the influence due to wind and install a PC block on the roof of a high-rise building. SOLUTION: Plural bolts 7 are protruded on the lower face of a rectangular PC block 5. The bolt 7 is passed through a hole 9 in a metal fixture 8 and a nut 12 is threaded thereto via the metal fixture 8. A joint width holding protrusion 6 which is put in contact with the side face of the adjacent PC blocks 5 to secure a preset joint width is formed on the side face of the PC block 5. A positioning member which has a protrusion put in contact with the end of a flange when the PC block 5 is mounted on the flange 1a on the upper side of a joist material 1 is provided on the metal fixture 8. With the rotational movement of the metal fixture 8, the protruding direction of the protrusion of the positioning member is changed to adjust the position of the PC block 5 to the flange, and the nut 12 is screwed therein to hold the flange between the lower face of the PC block 5 and the metal fixture 8 and fix the PC block 5 to the joist 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laying structure of a PC block laid on, for example, a roof of a building.

[0002]

2. Description of the Related Art Hitherto, a walking cinder such as a building roof has been constructed by laying a PC block in place of cast-in-place concrete, thereby improving the efficiency of construction work. .

[0003]

By the way, this kind of P
At present, C blocks are used only on the roofs of low-rise buildings because they are affected by wind. That is, when the building becomes high, the wind load becomes a negative pressure, and if the PC block is light, there is a possibility that the PC block will float in a strong wind. In this case, if the weight of the PC block is increased, the influence of the strong wind can be reduced. However, since the construction of the PC block is the final finishing stage, the laying work must be performed manually, and When the weight is increased, there is a problem that the labor required for the laying work increases.

The present invention has been made in view of the above circumstances, and provides a PC block laying structure which can be laid very easily and which is not affected by wind even when installed on the roof of a high-rise building. It is intended to be.

[0005]

In order to achieve the above object, a PC block laying structure according to claim 1 is provided fixedly on an upper surface of a joist having a flange extending horizontally in an upper part thereof. PC block laying structure,
A bolt protruding from the lower surface side of the PC block, a fixing member made of a plate material having a hole through which the bolt is inserted, and an end portion of the fixing member screwed to the bolt via the fixing member. By screwing in the state where the flange of the joist material is arranged between and the lower surface of the PC block,
A nut for fixing the PC block to the joist is provided by holding the flange between the lower surface of the PC block and a fixture.

According to a second aspect of the present invention, there is provided the PC block laying structure according to the first aspect.
A joint width holding projection having a predetermined distance from each other is formed on the side surface of the PC block so as to abut on the side surface of another adjacent PC block. According to a third aspect of the present invention, in the laying structure of the PC block according to the first or second aspect, the positioning member has a protrusion that abuts on an end of a flange of the joist material on the fixing bracket. The orientation of the PC block with respect to the flange is adjusted by rotating a fixture around the axis of the bolt to change the direction of the protrusion.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a PC block laying structure according to the present invention. 1 and 2, reference numeral 1 denotes a joist made of H-shaped steel.
The joist 1 is fixed to a dowel 3 erected on the floor 2, and is installed in a state where the height position of the upper surface is adjusted by a level adjusting mortar 4 provided between the joist 1 and the floor 2. ing. The PC block 5 is fixed to the upper surface of the joist 1.

As shown in FIG. 3, the PC block 5 is formed in a rectangular plate shape and is made of, for example, concrete, stone, or the like. This PC block 5
In FIG. 1, joint width holding projections 6 are formed on each side of a rectangle at positions shifted from the center of each side to one side. That is, when the adjacent PC blocks 5 are abutted with each other so as to lay the PC blocks 5 in a horizontal plane, each PC block 5
The joint width holding projections 6 of the blocks 5 abut against the side surfaces of the adjacent PC blocks 5, so that the space between the joints between the adjacent PC blocks 5 is maintained at a predetermined size that is the protrusion dimension of the joint width holding projections 6. It is supposed to be.

The PC block 5 is provided with a plurality of bolts 7 projecting to the lower surface side, and a fixing bracket 8 is attached to these bolts 7. The fixing bracket 8 is made of a metal plate having a hole 9 formed therein.
One end is formed in an L-shape bent toward the PC block. The bolt 7 is inserted into the hole 9 of the fixture 8, and is attached to the PC block 5 by a nut 12 screwed into the bolt 7 via a washer 11. Then, the locking portion 13 composed of the end opposite to the bent side of the fixing bracket 8 is attached to the joist 1
When the nut 12 is screwed in a state where the nut is screwed in a state where the nut is arranged on the lower surface side of the flange 1a on the upper side of the
Thereby, the PC block 5 is fixed to the flange 1 a on the upper side of the joist 1.

As shown in FIG. 4, a positioning member 15 having a projecting portion 14 is fixed to the surface of the fixing block 8 on the PC block 5 side, and the PC block 5 is joisted by the fixing block 8. When the fixing member 8 is rotated when the fixing member 8 is fixed to the flange 1 a of the material 1, the projecting dimension of the projecting portion 14 of the positioning member 15 toward the end of the upper flange 1 a of the joist material 1 is the dimension L. The adjustment is performed, whereby the attachment position of the PC block 5 with respect to the joist 1 is adjusted.

A rubber pad 16 is provided between the PC block 5 and the joist 1 at the corner where the PC block 5 is provided, and the joint at the corner has an elongated joint adjusting material 17.
Are arranged. As shown in FIG. 5, the joint adjusting members 17 are arranged so that the directions thereof are different from the joint adjusting members 17 adjacent in the vertical or horizontal direction by 90 °.

As described above, according to the PC block laying structure, the PC block 5 is placed on the upper surface side of the flange 1 a on the upper side of the joist 1, and the locking portion 13 formed by the end of the fixing bracket 8 is formed. The nut 12 is screwed into the bolt 7 in a state in which the flange 1a is disposed on the lower surface side of the flange 1a. 5 can be fixed to the joist 1. PC block 5
Since the flange 1a of the joist 1 is sandwiched and fixed between the joist 1 and the fixing bracket 8, the PC block 5 floats even if the wind load is negative when installed on the roof of a high-rise building. Can be eliminated. In other words, it is possible to eliminate the problem due to the influence of the wind without increasing the weight, thereby using a relatively lightweight PC block 5 and facilitating the installation work.

When the PC block 5 is laid, the joint width between adjacent PC blocks 5 can be very easily secured to a predetermined size by the joint width holding projection 6 formed on the side surface of the PC block 5. And the work can be further facilitated. Further, the fixing member 8 is rotated about the axis of the bolt 7 so that the positioning member 15
By adjusting the position of the protruding portion 14, the PC block 5 can be very easily positioned with respect to the joist material 1.

[0014]

As described above, according to the PC block laying structure of the present invention, the following effects can be obtained. According to the laying structure of the PC block according to the first aspect, the PC block is placed on the upper surface side of the upper flange of the joist material, and the locking portion formed by the end of the fixing bracket is arranged on the lower surface side of the flange. In this state, the nut is screwed into the bolt, so that the PC block can be fixed to the joist material by holding the flange of the joist material between the PC block and the fixing bracket very easily. In addition, since the joist material flange is sandwiched and fixed between the PC block and the fixing bracket, the PC block floats even if it is installed on the roof of a high-rise building and the wind load becomes negative. Can be eliminated. In other words, it is possible to eliminate the problem caused by the influence of the wind without increasing the weight, whereby a relatively lightweight PC block can be used, and the installation work can be facilitated.

According to the laying structure of the PC block according to the second aspect, when the PC block is laid by the joint width holding projections formed on the side surfaces of the PC block, adjacent P blocks are laid.
The joint width between the C blocks can be very easily secured at a predetermined size, and the work can be further facilitated. According to the laying structure of the PC block according to the third aspect, the fixing block is pivoted about the axis of the bolt and the position of the protruding portion of the positioning member is adjusted so that the PC block can be extremely easily moved with respect to the joist material. Can be positioned.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an installation location of a PC block for explaining a PC block laying structure according to an embodiment of the present invention.

FIG. 2 is a plan view of a part of the PC block illustrating a laying structure of the PC block according to the embodiment of the present invention.

FIG. 3 is a plan view of the PC block, illustrating a laying structure of the PC block according to the embodiment of the present invention.

FIG. 4 is a plan view of a fixture provided on the PC block, illustrating a laying structure of the PC block according to the embodiment of the present invention.

FIG. 5 is a plan view of the laid PC block illustrating a laying structure of the PC block according to the embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 joist 1 a flange 5 PC block 6 joint width holding projection 7 bolt 8 fixing bracket 9 hole 12 nut 14 protrusion 15 positioning member

Continuation of front page (72) Inventor Yoshihiko Okutsu Ishikawashima Building Materials Co., Ltd., 1-12-1 Yurakucho, Chiyoda-ku, Tokyo

Claims (3)

[Claims] 1. A laying structure of a PC block fixedly disposed on an upper surface of a joist having a flange extending horizontally in an upper part thereof, comprising: a bolt protruding from a lower surface side of the PC block; A fixing member made of a plate material having a hole through which the bolt is inserted; and a screw that is screwed to the bolt through the fixing member, and the joist material is fixed between an end of the fixing member and the lower surface of the PC block. A nut for fixing the PC block to the joist material by screwing in a state in which the flange is provided so that the flange is sandwiched between the lower surface of the PC block and a fixing bracket. Laying structure of PC block. 2. A joint width holding projection having a predetermined distance between the PC blocks is formed on a side surface of the PC block so as to be in contact with a side surface of another adjacent PC block. The laying structure of a PC block according to claim 1. 3. A fixing member having a projection which is in contact with an end of a flange of the joist material is provided on the fixing bracket, and the fixing bracket is rotated about an axis of the bolt to thereby fix the projecting section. 3. The laying structure of a PC block according to claim 1, wherein an arrangement position of the PC block with respect to the flange is adjusted by changing an orientation.