JP2568326B2 - Connection structure of precast concrete blocks for building foundation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for connecting precast concrete (PC) blocks forming the foundation of a building.

[0002]

BACKGROUND ART FIG. 4 shows a concrete foundation of a building,
The foundation is composed of PC footing members 51 to 62 forming independent footing, and PC rising members 63 to 79 serving as beam members whose ends are connected to each other on the footing members 51 to 62. It is made. FIG. 5 shows a PC
The conventional connecting structure on the footing member 55 at the end of the rising members 66, 68, 69, 71, which are blocks, is shown. Coupling structure of footing members on 58 of the end portion of the standing upper member 71,73,74,76 shown in FIG. 4 are also the same.

[0003] As shown in FIG. 5, the raised portion member 6
6, 68, 69, 71 are ends 66A and 71A, 68A
And 69A face each other and are arranged in a plane cross,
Nuts 84 to 87 connected to reinforcing bars 80 to 83 are embedded in the ends 66A, 68A, 69A and 71A. Nuts 84 to 87 have end portions 66A, 6
Connecting bar 88 extending from 8A, 69A, 71A toward the outer end
Male screw portions 88A to 91A at the rear ends of the vertical members 91 to 91 are screwed in, and the connecting bars 88 of the rising members 66 and 71 whose ends face each other.
And 91 and connecting bars 89 and 90 of the rising members 68 and 69.
Are bundled with a stirrup 92, respectively.

Thereafter, rising members 66, 68, 69, 71
A partition plate 94 is inserted into the vertical groove 93 formed in the groove, and the space S surrounded by the partition plate 94 is filled with a grout material, and the connecting bars 88 to 91 and the stirrup 92 are buried in the grout material. The ends of the rising members 66, 68, 69, 71 are joined together by solidification of the grout material.

[0005]

According to the above prior art, in order to cross the connecting bars 88 and 91 and the connecting bars 89 and 90 in a cross shape without interfering with each other, the rising members 66,
The height position of the nuts 84 and 87 in 71 must be different from the height position of the nuts 85 and 86 in the rising members 68 and 69. According to this, it is necessary to manufacture a plurality of types of rising members having different nut height positions,
There has been a problem that the production and management of the rising member becomes troublesome.

An object of the present invention is to make the height of a nut embedded in a PC block for screwing a male thread portion of a connecting bar the same for each PC block, and to determine the type of PC block that must be manufactured. It is an object of the present invention to provide a connection structure of a precast block for a foundation of a building which can be reduced.

[0007]

SUMMARY OF THE INVENTION The present invention provides a precast concrete block comprising two precast concrete blocks forming the foundation of a building.
Male threads at the rear end of connecting bars extending in the direction of the outer end from the ends to the nuts are embedded in the ends of the respective blocks, with the ends facing each other and arranged in a plane cross shape. In the connection structure of a precast concrete block for foundation of a building into which a screw is screwed, a hollow intermediate member is disposed between the blocks whose end portions face each other, and a hole formed in the intermediate member is inserted into a hole formed in the intermediate member. > Insert the male thread at the tip of each connecting muscle
A nut is screwed into this male thread that protrudes into the
Wherein the connecting bar is fixed to the intermediate member .

[0008]

[0009] In the above, the PC block may be a standing upper member made of PC that is disposed on top of the footing member made PC, also in the footing portion and rising portion and block substructure made PC integrally molded Good.

[0010]

[Action] The external thread at the end of each connecting bar is connected to the intermediate member.
Into the hole of
If the connecting bars are connected to the intermediate member by screwing the slots, the PC blocks whose ends are opposed to each other are connected via the connecting bar and the intermediate member. After this, each P
A grout material is filled around the end of the C block, and the connecting bar and the intermediate member are buried therein.

In the present invention, the male end of each connecting bar extending from the end of each PC block toward the outer end is provided.
The threaded portion projects into the hollow intermediate member and
Since the nut is screwed, it is possible to embed a nut externally threaded portion of the rear end of the connecting muscles are screwed at the same height on each PC block, The rear end of the connecting muscle
Screw the male thread of the PC block into the nut of the PC block.
Even after connecting the skeletal muscle to the PC block firmly,
Screwed into the male thread at the tip of the connecting muscle protruding inside the
By rotating the nut, the PC block and
Adjust the spacing with the intermediate member, in other words, the ends
It is possible to adjust the interval between two PC blocks that match each other.
So that a foundation can be formed according to predetermined dimensions
Will be.

[0012]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a connection structure according to the present embodiment. This connection structure is the same as the conventional example shown in FIG. 6 and is made of a PC made on a PC footing member 1 forming an independent footing part of a base. Ends 2A of rising members 2 to 5 of
It is for connecting 5A. Therefore, the PC blocks in this embodiment are the rising members 2 to 5. End 2A
And 5A, 3A and 4A are facing each other, and reinforcing members 6 to 9 are provided inside the rising members 2 to 5 arranged in a plane cross shape.
Are embedded above and below each other (see FIG. 3), and nuts 10 embedded in the end portions 2A to 5A are inserted into these reinforcing bars 6 to 9 respectively.
To 13 are combined. The height positions of these nuts 10 to 13 are the same for the rising members 2 to 5.

Male nuts 1 at the rear ends of connecting bars 14 to 17 extending outward from the ends 2A to 5A to the nuts 10 to 13
4A to 17A are screwed. These connecting muscles 14-17
Are formed with external threaded portions 14B to 17B. These external threaded portions 14B to 17B connect the connecting member 1 to the intermediate member 18 disposed between the ends 2A to 5A of the rising members 2 to 5.
The tips of 4 to 17 are locked.

More specifically, as shown in FIG. 2, the intermediate member 18 is a square metal member having a flat rectangular shape, and two upper and lower holes 19 are formed on each side surface. The connecting bars 1 provided in these holes 19 are provided two upper and lower two for one rising member 2-5.
Male screw portions 14B to 17B at the tips of 4 to 17 are inserted,
Male screw part 14B projecting into hollow intermediate member 18
The nut 20 is screwed into 17B and tightened. As a result, the distal ends of the connecting bars 14 to 17 are fixed to the inside of the intermediate member 18 by the screw connection method, and the rising members 2 to 5 are connected to the connecting bars 14 to 17 and the intermediate member 18. Are connected to each other.

Thereafter, as shown in FIG. 1, a partition plate 22 is inserted into a vertical groove 21 provided in the rising members 2 to 5, and the end portions 2A of the rising members 2 to 5 surrounded by the partition plates 22. The grout material is filled in the space A around the area of ~ 5A, and the connecting bars 14 to 17 and the intermediate member 18 are buried in the grout material. Further, as shown in FIG. 3, the grout material is provided with the footing member 1 by the height level adjusting bolts 23 provided to arrange the rising members 2 to 5 on the upper portion of the footing member 1 at the same height level. The gap between the rising members 2 to 5 is also filled, and the gap is filled with the grout material. When the grout material solidifies, the ends 2A to 5A of the rising members 2 to 5 are solidified with the grout material, and the foundation of the building is completed.

[0016]

In the embodiment described above, the PC blocks whose ends are connected to each other are the rising members 2 to 5 arranged above the footing member 1, but the present invention is not limited to the case where the PC blocks are footed. It can be applied to the case where the part and the rising part are a foundation block molded integrally, and also when the footing member does not form an independent footing part and has a long length like the rising member. Also applicable to

[0018]

According to the present invention, the male members at the tips of the connecting bars extending outward from the ends of the four PC blocks.
Hollow intermediate member with screw part arranged between PC blocks
This male screw part inserted into the hole of and protruded inside the intermediate member
A nut for screwing the male thread at the rear end of these connecting bars is embedded in each PC block at the same height position because the connecting bars are connected to the intermediate member by screwing nuts to the connecting members. Therefore, it is not necessary to make a plurality of types of PC blocks with different heights of the nuts, and the number of types of PC blocks can be reduced. Therefore, the production and management of these blocks can be easily performed. Become. Also, connect the rear end of the connecting bar to the nut of the PC block.
Screw the male thread of the
Even after firmly connecting to the block,
Screwed into the male thread at the end of the connecting bar that protrudes
By rotating the nut, the PC block and the middle
Adjust the gap with the member, in other words, the ends
To adjust the distance between two PC blocks
Therefore, the foundation to be constructed was as specified dimensions
It can be accurate.

[Brief description of the drawings]

FIG. 1 is a plan view showing a connection structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of the intermediate member shown in FIG.

FIG. 3 is a side sectional view seen from the right direction in FIG. 1;

FIG. 4 is a plan view showing the entire foundation.

5 is a partially enlarged view of FIG . 4, showing a conventional example.
FIG.

[Explanation of symbols]

2-5 PC erecting member as PC block 2A-5A End 10-13 Nut 14-17 Connecting bar 14A-17A Male thread at rear end of connecting bar 18 Intermediate member

Claims (1)

(57) [Claims] 1. Four precast concrete blocks forming the foundation of a building are arranged two-by-two in a plane cross shape with their ends facing each other, and nuts are embedded in the ends of each of said blocks. In a connection structure for a precast concrete block for a foundation of a building in which a male screw portion at a rear end of a connecting bar extending from the end portion to the outer end direction is screwed into a nut, a hollow space is provided between each of the blocks facing each other. The intermediate member is arranged, and a hole formed in the intermediate member is provided with a tip of each of the connecting muscles .
Insert the male screw part and project it inside the intermediate member.
A connection structure for a precast concrete block for a foundation of a building, wherein a nut is screwed into a male screw portion to fix the connection bar to the intermediate member .