JP3021249B2 - Precast concrete entrance foundation 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 precast concrete entrance foundation structure, and more particularly to a precast concrete entrance foundation structure capable of coping with a change in an entrance plan.

[0002]

2. Description of the Related Art Conventionally, in general, when building a foundation for a house, excavating the ground of a foundation construction part, performing root cutting, laying a pebble or the like on the cut part, and then laying concrete. The formwork was erected, reinforcement was provided in the formwork, and concrete was cast there.

After the concrete is solidified, the foundation is constructed by removing the formwork.

Further, after the mold is removed, the surface of the foundation is finished with a mortar or the like.

[0005] In this case, the foundation is also constructed of cast-in-place concrete at the entrance, and concrete is poured directly on the ground between the entrance soil and the entrance porch. Mortar finish or tile application.

[0006]

As described above, when a foundation is constructed from cast-in-place concrete, it takes time and labor to assemble a formwork and cast concrete, and also requires a concrete curing period. The construction period is prolonged,
There was a problem that the cost was high.

[0007] In particular, in the case of the entrance porch or the entrance porch, the subsequent work must be performed while casting concrete and avoiding the vicinity until the mortar finish or the tile application is completed. there were.

Therefore, by making the foundation made of precast concrete, the work of assembling the formwork and placing the cast-in-place concrete is omitted, the efficiency of the work at the site is improved, and the burden on the worker is reduced. It is possible to shorten the construction period and reduce costs.

However, if the foundation is made of precast concrete, it is necessary to provide a cutout for the entrance sash frame on the floor at the entrance mounting portion of the entrance door, and the position of the cutout is determined by the entrance plan. Will change the mounting position of the entrance door,
Notches must be provided at positions corresponding to the entrance plan. Therefore, there has been a problem that an entrance base made of various precast concretes corresponding to the entrance plan is required.

[0010] That is, the entrance sash is variously different, such as a case without a sleeve, a case with a sleeve on only one side, or a case with a sleeve on both sides. Therefore, various precast concretes according to the situation of each entrance sash are available. There was a problem that an entrance porcelain was required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its object is to simplify the foundation construction work, shorten the construction period, change the entrance plan, and implement various forms. An object of the present invention is to provide a precast concrete entrance base structure that can easily cope with an entrance sash.

[0012]

According to a first aspect of the present invention, there is provided a precast concrete entrance formed by supporting a slab on a box-shaped slab supporting beam installed on the ground. Soil section, a precast concrete entrance porch formed by supporting a porch floor slab on the top of the porch support beam installed on the ground, and a notch corresponding to the lower part of the entrance sash frame on the upper surface, A precast concrete entrance support beam disposed between the soil support beam and the porch support beam. According to a second aspect of the present invention, on a side surface of the entrance support beam,
A substantially U-shaped connection metal fitting is arranged between the soil support beam and the porch support beam, and the soil support beam, the porch support beam, and the entrance support beam are connected via the connection metal fitting. I have.

[0013]

According to the first aspect of the present invention, a separate precast concrete entrance support beam is disposed between the precast concrete entrance door and the entrance porch, and the upper surface of the entrance support beam is provided. By forming a notch corresponding to the lower part of the entrance sash frame at the bottom, preparing the entrance support beam corresponding to the entrance plan, the entrance plan can be easily done without affecting the entrance soil and the entrance porch. Can be changed.

According to the second aspect of the invention, it becomes possible to easily and surely connect the sill support beam and the entrance support beam with one connection fitting.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 3 are views showing a precast concrete entrance foundation structure according to an embodiment of the present invention.

The foundation 10 in this embodiment is provided with roots cut at predetermined intervals on the ground on which a building is to be constructed, and a base 12 is installed at the cut-off portions. By mounting and bridging the ends of the foundation beams 14 set to a length extending between the bottom plates 12 on the bottom plate 12 and connecting the foundation beams 14,
A continuous foundation 10 is constructed.

The foundation 10 also employs a precast concrete entrance foundation structure at the entrance of the building.

The entrance base structure made of precast concrete comprises an entrance-soil section 16, an entrance porch section 18, and an entrance support beam 20.

The entrance-soil section 16 is composed of a precast concrete slab support beam 22 and a slab floor slab 24.

The earth support beam 22 is placed and laid on the bottom 12 installed on the ground where the entrance is formed, and is formed in a substantially box shape penetrating vertically. In addition, the foundation beam 1
Two projections 27 for connecting to the projection 4 are formed to project. Further, a slab floor receiving portion 28 for placing and supporting the slab floor slab 24 is formed on the upper inner side surface of the slab support beam 22.

The slab 24 is formed in a substantially rectangular plate shape whose edge can be placed on the slab receiving portion 28 of the slab support beam 22.

The entrance porch section 18 comprises a porch support beam 30 made of precast concrete and a porch floor slab 32.

The porch support beam 30 is composed of a pair of right and left members which are disposed outside the entrance support beam 20 at the outside of the building.
A porch floor slab receiving portion 34 for placing and supporting a porch floor slab 32 is provided at an upper position facing the pair of porch support beams 30.
Are formed. Further, the interval between the pair of porch support beams 30 can be variously changed according to the entrance plan.

The porch floor slab 32 is formed in a substantially square shape that can be placed on the porch floor slab 34 of the porch support beam 30. Further, the porch floor slab 32 is set to various sizes corresponding to the intervals of the porch support beams 30.

The entrance support beam 20 is made of a plate-shaped precast concrete disposed between the soil support beam 22 and the porch support beam 30, and has an entrance sash frame (not shown) on its upper surface. A notch 36 for receiving the lower part of the entrance sash frame is provided. The cutout portion 36 is set variously in accordance with the type, size, and the like of the entrance sash frame changed according to the entrance plan. A porch floor slab receiving portion 37 for placing and supporting the porch floor slab 32 is formed at the upper part of the entrance support beam 20 on the outside of the building. It supports the indoor side edge.

The soil support beam 22 and the porch support beam 3
0 and the entrance support beam 20 are integrally connected via a substantially U-shaped connection fitting 38. In particular,
As shown in FIG. 2, a connection fitting 38 is disposed between the soil support beam 22 and the porch support beam 30 on the side surface of the entrance support beam 20,
The connection fitting 38 is connected to the soil support beam 22, the entrance support beam 20, and the porch support beam 30 by bolts 40, respectively. In addition, inserts 42 are respectively buried in connecting portions of the soil support beams 22, the entrance support beams 20, and the porch support beams 30. In addition,
In the figure, reference numeral 44 denotes a connecting cotter. In addition, soil support beam 2
2, porch support beam 30, entrance support beam 20, and foundation beam 1
In the space surrounded by 4, concrete for connection is cast and integrated.

As described above, the slab support beam 22, the entrance support beam 20, and the porch support beam 30 are separately formed in advance and are connected and integrated at the time of construction, so that the entrance support beam 20 can be used for the type of entrance sash frame, By changing to the one having the cutout portion 36 adapted to the size or the like, it is possible to easily cope with a change in the entrance plan.

Further, since the soil support beam 22, the entrance support beam 20, and the porch support beam 30 are simultaneously connected and integrated by one connection fitting 38, the number of parts can be reduced and the connection structure can be simplified.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention.

For example, the entrance porch section 18 and the entrance-to-soil section 1
The shape of the entrance support beam 6 or the entrance support beam 20 is not limited to the above-described embodiment, but may be various shapes corresponding to the entrance plan.

[0032]

According to the first aspect of the present invention, between the entrance door made of precast concrete and the entrance porch,
A front support beam made of a separate precast concrete is arranged, and a cutout portion corresponding to a lower portion of a front sash frame is formed on an upper surface of the front support beam to prepare a front support beam corresponding to a front plan. Thus, there is an effect that it is possible to easily cope with a change in the entrance plan without affecting the entrance soil and the entrance porch.

According to the second aspect of the present invention, it becomes possible to easily and reliably connect the soil support beam and the entrance support beam with one connecting fitting.

[Brief description of the drawings]

FIG. 1 is a plan view showing a precast concrete foundation structure according to one embodiment of the present invention.

FIG. 2 is an enlarged plan view showing the entrance basic structure of FIG.

FIG. 3 is an exploded perspective view showing the entrance basic structure of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 16 Entrance dirt part 18 Entrance porch part 20 Entrance support beam 22 Soil support beam 24 Soil floor slab 30 Porch support beam 32 Porch floor slab 36 Notch part 38 Connecting bracket

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-61-109840 (JP, A) JP-A-61-53935 (JP, A) JP-A-6-257211 (JP, A) 15701 (JP, U) Japanese Utility Model Hei 4-95401 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 1/00 503 E02D 27/02

Claims (2)

(57) [Claims] 1. A precast concrete entrance slab formed by supporting a slab on a box-shaped slab supporting beam installed on the ground, and a porch slab on an upper porch supporting beam installed on the ground. Has a notch corresponding to the lower part of the entrance sash frame on the upper surface, and a precast concrete entrance porch formed by supporting the
A precast concrete entrance support structure, comprising: a precast concrete entrance support beam disposed between the soil support beam and the porch support beam. 2. The entrance base structure made of precast concrete according to claim 1, wherein a substantially U-shaped connecting fitting is arranged between the soil support beam and the porch support beam on a side surface of the entrance support beam. An entrance foundation structure made of precast concrete, wherein the inter-soil support beam, the porch support beam, and the entrance support beam are connected via a connection fitting.