JPS5930063Y2 - Structure of the lower part of the building - Google Patents

Description

[Detailed explanation of the idea] This idea concerns the structure of the lower part of the building.

Conventionally, as shown in FIG. 1, anchor poles 1 to 1 have been buried in the cloth foundation 2 so as to protrude from the top of the foundation 2.

To attach the I-shaped steel floor beam 3 to the cloth foundation 2, first prepare the Z-shaped metal fitting 4, and insert the anchor bolt 1 into the bolt hole (not shown) provided in the upper horizontal piece of the Z-shaped metal fitting 4. Fasten the nuts 5, then place the floor beam 3 on the lower horizontal piece of the Z-shaped metal fitting 4, and bolt the lower flange of the floor beam 3 and the lower horizontal piece of the Z-shaped metal fitting 4 using bolts 6 and nuts 7. This is done by signing a contract.

However, since there are two bolt fastening points: the connection between the cloth foundation 2 and the Z-shaped bracket 4, and the connection between the floor beam 3 and the Z-type bracket 4, the installation work of the floor beam 3 to the cloth foundation 2 is complicated. I had a problem with that.

Therefore, the object of this invention is to provide a structure for the lower part of a building in which the floor beams can be easily attached to the foundation.

An embodiment of this invention will be described with reference to FIGS. 2 to 4.

That is, as shown in FIG. 2, the structure of the lower part of this building is such that anchor bolts 8 are installed on the inner surface 2a' of the cloth foundation 2', and the ends of the floor beams 3 are attached to the anchor bolts 8 with nuts 14.
Fix it using.

To explain in detail, the anchor bolt 8 is installed on the inner surface 2a' of the cloth foundation 2' so as to be orthogonal to the inner surface 2a'.

In this case, the anchor bolt 8 is attached to the cloth foundation 2' in the following manner.

That is, first, as shown in FIG. 3, a floor beam mounting anchor 11 is prepared, in which a reinforcing bar 10 is welded and fixed to the outer peripheral end surface of a plate 9, and an anchor bolt 8 is erected on one surface of the plate 9.

Next, the cloth foundation 2' is formed in the order of reinforcement, formwork, and concrete pouring.First, in the reinforcement work, as shown in Figure 4, the floor beams are attached to the foundation reinforcement 12. The reinforcing bars 10 of the anchor 11 are fixed by welding.

Next, assemble the formwork. In this case, the threaded end of the anchor pole I-8 is made to protrude outward from the formwork (not shown) so that it projects from the inner surface 2a' of the cloth foundation 2', Furthermore, a cap is attached to prevent concrete from adhering to the edge of the tip.

Next, concrete 1 is poured into the formwork and allowed to solidify.

To assimilate the concrete, remove the cap attached to the threaded end of the anchor bolt 8, remove the formwork, and form the cloth foundation 2'.

In this way, the threaded end portion of the anchor bolt 8 is made to protrude from the inner surface 2a' of the cloth foundation 2'.

The floor beam 3 is formed of a section steel, and an end plate 13 is welded and fixed to the end face of the floor beam 3. The end plate 13 is provided with insertion holes 13a corresponding to the anchor bolts 8.

To install the floor beam 3, anchor bolts 8 are passed through bolt insertion holes 13H, the outer surface of the end plate 13 is brought into contact with the inner surface 2a' of the cloth foundation 2', and nuts 14 are fastened to the anchor bolts 8.

As a result of this configuration, there is only one bolt fastening point, which is the joint between the end plate 13 and the inner surface 2a' of the cloth foundation, so that the floor beam 3 is connected to the cloth foundation 2. Can be easily attached to '.

Further, since the anchor bolts 8 are used to fix the floor beam 3 to the cloth foundation 2', the structure is simple and the cost is low.

In addition, the anchor bolts 8 can be installed by placing the anchor bolts 8 at predetermined positions within the formwork when pouring concrete into the formwork to form the cloth foundation 2'. 8 installation on cloth foundation 2'
This can be done at the same time as the formation, making it easy and quick to install.

Furthermore, since the floor beam 3 is fixed to the anchor bolt 8 installed on the inner surface 2a' of the cloth foundation 2', there is no need to provide a cutout step in the upper part of the cloth foundation 2' to support the floor beam 3. In other words, the upper part of the cloth foundation 2' can be formed to have the same thickness and width as the middle part of the cloth foundation 2', and the wall material to be built on the top of the cloth foundation 2' can be supported with sufficient strength. The construction can be easily carried out as there is no need to form a notch step.

Moreover, since the installation anchors 11 are connected to the foundation reinforcement 12, the anchor poles (8) will not shift during concrete pouring, and after the floor beams 3 are installed, the floor beams 3 can be firmly attached to the foundation 2. It can be cut to any size.

In addition, because the anchor bolt 8 is erected on one side of the plate 9 and the plate 9 is buried in the foundation 2 in a vertical position, the tensile load of the beam 3 acting on the anchor bolt 8 in the axial direction is applied to the entire one side of the plate 9. Since the anchor bolts 8 are dispersed and supported by the foundation 2', the strength of attaching the anchor bolts 8 to the foundation 2' can be further increased.

As described above, according to the structure of the lower part of the building of this invention, the attachment strength of the anchor bolt to the foundation is strong, the floor beam can be easily attached to the foundation, construction can be carried out quickly and easily, and the structure is It is simple and inexpensive, and has the effect of supporting the wall material built on the foundation with sufficient strength.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional example, Fig. 2 is a sectional view of an embodiment of this invention, Fig. 3 is a perspective view of a floor joist installation anchor and a floor joist, and Fig. 4 is a partial cutaway of this embodiment. It is an exploded perspective view. 2'... Cloth foundation, 2a'... Inner surface,
3...Floor beam, 8...Anchor bolt,
9...Plate, 10...Reinforcement bar, 11
...Floor beam installation anchor, 13... End plate, 13a... Pol I/insertion hole, 14
...Natsuto.

Claims (1)

[Scope of utility model registration request] The foundation, the foundation reinforcement buried within this foundation, and play 1~
Reinforcing bars protrude outward from the outer peripheral end face of the play I.
・Anchor bolts are installed on one side of the foundation, and with the plate buried in the foundation in a vertical position, reinforcing bars are connected to the foundation reinforcement, and the tip of the anchor bolt is orthogonally protruded from the inside surface of the foundation. A floor joist in which a floor joist mounting anchor and an end plate having a bolt insertion hole are fixed to the end face, and the end plate 1 - the outer surface is opposed to the inner surface of the foundation, and the anchor plate is passed through the bolt insertion hole. and a nut screwed onto the anchor bolt to fix the floor beam to the foundation.