JP3143336B2 - Reinforcement structure of opening foundation and construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar structure of an architectural foundation having openings such as ventilation openings and human passages, a construction method thereof, and a reinforcing bar network used therefor.

[0002]

2. Description of the Related Art Conventionally, on a foundation for a house or the like, a foundation consisting of a concrete footing and a cloth foundation standing upright from this portion is constructed. The foundation is provided with reinforcing bars in order to secure the strength of the fabric base, and a vertical bar and a horizontal bar joined at a predetermined interval are formed along the longitudinal direction of the base. The reinforcing bars are assembled by connecting respective reinforcing bars whose ends are processed into U-shaped hooks on site at the time of foundation construction.

[0003] On the other hand, an opening such as a ventilation hole or a person passage through which a person can pass for inspection or the like is formed on the foundation. The opening is formed as a window-like hole penetrating both sides of the foundation, or as a concave part in which the upper surface of the foundation is concavely cut. For this reason, when providing reinforcement, it is necessary to arrange reinforcement in a region other than the region where the opening is formed.

[0004] If the horizontal streak, which is the main reinforcing bar, is cut in the area where the opening is formed, the structural strength of the foundation cannot be ensured in the area with the opening due to the lack of concrete cross section. Therefore, in order to reinforce the area around the opening, an extra horizontal streak or diagonal streak has been conventionally attached.

[0005]

In recent years, there has been a demand for a shortage of construction workers, a uniform quality, and a shortening of the construction period.

[0006] For this reason, there is a demand for an architectural foundation that can simplify the on-site work related to the rebar arrangement and can easily obtain the rebar quality, that is, the desired structural strength, and can shorten the construction period. ing.

[0007] By the way, the present applicant has previously set a search key: E
Investigating prior art with 02D27 / 01 × arrangement, patent 6
Six and 48 utility model survey results were obtained.

[0008] Based on the results of the investigation, the present applicant has made intensive studies on the prior art, and as a result, extracted JP-A-5-321279 as the prior art.

According to the above publication,
In a concrete foundation having notches at a plurality of locations, reinforcing bars at positions corresponding to the notches have the strength required when the notches are provided, specifically,
It features a structure in which the diameter of the horizontal streak along the lower edge of the notch is increased.

However, in the configuration described in the above publication,
It only discloses the securing of the reinforcement, but does not solve the problems related to the on-site work of the reinforcement.

An object of the present invention is to simplify the on-site work related to the rebar arrangement work, and to easily obtain the rebar arrangement quality, that is, a desired structural strength, and shorten the construction period. It is an object of the present invention to provide a reinforcing bar structure, a construction method thereof, and a reinforcing bar network used therefor.

[0012]

According to the first aspect of the present invention, in a reinforcement structure of a building foundation having an opening such as a ventilation port, a human passage, both sides of a region where the opening of the building foundation is formed. each is placed, a first reinforcement net comprising previously linked the horizontal stripes and vertical stripes, is disposed between the first reinforcement net, horizontal stripes and at positions except for the positions corresponding to the opening in A second reinforcing bar network in which longitudinal bars are connected in advance, and both ends of the second reinforcing bar network are overlapped and connected on the first reinforcing bar network. Features.

According to a second aspect of the present invention, in a method of constructing a building foundation having an opening such as a ventilation opening or a human passage, a vertical streak and a horizontal streak are previously connected to both sides of a region where the opening is formed. Arranging a first reinforcing mesh of a predetermined length;
Between the two first reinforcing bars, a second reinforcing bar of a predetermined length, which is formed by previously connecting a horizontal bar and a vertical bar in a region outside the region where the opening is formed, and Superposing both ends of the second reinforcing bar on the two first reinforcing bars;
Connecting both ends of the second reinforcing bar network to the two first reinforcing bar networks.

According to the first and second aspects of the present invention, the second reinforcing network is disposed only in a special area having an opening, and the second reinforcing network is disposed on the first reinforcing network disposed on both sides thereof. By simply connecting both ends of the reinforcing bar, the rebar work for the opening foundation is completed.

According to a third aspect of the present invention, in the second aspect, a plurality of types of the second reinforcing bars are prepared and formed corresponding to a plurality of types of openings having different sizes formed in the building foundation. Any one of the second to fit the size of the opening to be
Is arranged between the two first reinforcing bars.

According to the invention of claim 3, a plurality of types of openings having different sizes, such as a ventilation opening and a human opening, are generally formed in the building foundation. By forming the muscle network, the on-site bar arrangement work is reduced.

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is an assembled perspective view showing the overall structure of the arrangement of the reinforcing bars in the area where the cloth foundation is to be constructed. The reinforcing bars used in the present embodiment are roughly divided into a first reinforcing bar network 10 arranged in a region other than a region where an opening such as a ventilation hole or a human passage is formed in the cloth foundation, and the opening in the cloth foundation. Is the second reinforcing bar network 20 arranged in the region where is formed. The first bar arrangement network 10
The two second reinforcing bars 10, 10 are arranged between the two second reinforcing bars 10, 10 so that both ends thereof overlap the two second reinforcing bars 10, 10. Both the first and second reinforcing bars 10 and 20 are formed by welding vertical and horizontal bars in a factory in advance.

As shown in FIG. 2, the first bar arrangement network 10
It has an upper muscle 12 extending in the horizontal direction and a lower muscle 14 extending in parallel below the upper muscle 12 as a horizontal muscle.
The upper and lower ends 12 and 14 have a diameter of, for example, 13 mm.
And this functions as the main line. Further, as the vertical bars of the first reinforcing bar network 10, both ends are the upper bar 12 and the lower bar 14.
A stirrup 16 welded to is provided. The stirrup 16 has a diameter of, for example, 10 mm.

The welding of the stirrups 12 and 14 and the stirrups 16 has an anchor effect. The stirrup 16 has a welding shear strength of, for example, 720 kg or more. This ensures the same strength as when the stirrup ends are connected at the site as U-shaped hooks, as used in the conventional site.

Further, since the stirrups 12 and 14 and the stirrups 16 are welded at a factory, the stirrups 16 can be fixed at an accurate position, and the strength of the cloth foundation can be reduced by the upper and lower main stirrups 12 and 14.
Can only be secured. Therefore, it is not necessary to provide the abdominal muscle between the upper and lower main muscles 12 and 14 as in the conventional bar arrangement structure. In addition, it is not necessary to process the end of the stirrup 16 into a hook.

The first reinforcing bar network 10 is manufactured at a factory with the overall length L1 shown in FIG. 2 set to a predetermined size. In this embodiment, the house on the building foundation is 1
Module (hereinafter also referred to as 1M) is 910 mm, for example.
It is constructed by the panel method. Therefore, the fabric foundation is also constructed according to the above module, and the dashed line S
In relation to the module core (910 mm wall core) indicated by, the first bar arrangement network 10 is arranged at the site. In the present embodiment, the total length L1 of the first reinforcing bar network 10 is set to be approximately 3.5M in order to arrange the first reinforcing bar network 10 in accordance with the module core S. The two-dot chain line T in FIG. 2 indicates a half module core (455 mm wall core).

In order to construct the fabric foundation shown in FIG. 1, a plurality of types of first reinforcing bars 10 having different total lengths L1 are prepared. In addition, the first reinforcing mesh 10 arranged at the corner of the cloth foundation shown in FIG. 1 is arranged after being bent at an L right angle by a bender.

Next, the second reinforcing bar network 20 will be described with reference to FIGS.

The second reinforcing bar 20 is arranged at a position where an opening such as a ventilation opening or a human passage is formed in the cloth foundation. The second reinforcing bar network 20 has an upper bar 22 and a lower bar 24 like the first bar bar 10, but the upper bar 2
The position 2 is located at a position lower than the upper end muscle 12 of the first reinforcing bar network 10 to avoid an opening.

FIGS. 3 and 4 differ in the position of the upper streaks 22 in order to correspond to two types of openings having the same width and different depths. Both the upper and lower reinforcing bars 22 and 24 are iron bars having a diameter of, for example, 13 mm, and function as main bars.

The second reinforcing bar network 20 further has a grid-like welded wire net 26 serving as a reinforcing bar welded to the upper and lower reinforcing bars 22 and 24. The grid-like welded wire mesh 26 is welded with a reinforcing bar having a diameter of, for example, 6 mm so as to form a grid of, for example, 100 × 100 mm, and is formed so as to surround both sides and a lower side of the opening. For this reason, this grid-like welded wire mesh 2
6 has first and second vertical reinforcing bars 26a and 26b and horizontal reinforcing bars 26c. The first vertical reinforcing bar 26a is disposed below the lower side of the opening, and has both ends at the upper end reinforcement 22 and the lower end reinforcement 2.
4 is welded. The second vertical reinforcing bar 26b is arranged on the side of the opening, and the middle position and the lower end in the vertical direction are welded to the upper end reinforcement 22 and the lower end reinforcement 24, and the upper end protrudes further upward than the upper end reinforcement 22.

The second reinforcing bar 20 is arranged so that the center position thereof is located at the center of the opening corresponding to the module core S or the half module core S. The second reinforcing network 20 is also manufactured in advance at a factory so as to have a predetermined overall length L2. In this embodiment, the total length L of the second
2 is set to a length of 2M or more.

Next, a reinforcement arrangement structure of an opening foundation using the first and second reinforcement arrangement networks 10 and 20 will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 5 shows a bar arrangement structure for constructing the cloth foundation 30 having the ventilation holes 32 using the second bar arrangement network 20 shown in FIG. FIG. 6 shows a reinforcing bar structure for constructing the cloth foundation 30 having the human passage 34 whose opening depth is larger than the ventilation opening 32 by using the second reinforcing bar network 20 shown in FIG. .

In each of the drawings, the ventilation port 32 and the human communication port 34 are formed as recesses in which the upper surface of the cloth foundation 30 is cut out in a concave shape. Further, the centers of the ventilation port 32 and the human communication port 34 coincide with the core of the half module.

In FIGS. 5 and 6, the two first
Are arranged at a distance of approximately 1M. The second reinforcing bar 20 includes two first reinforcing bars 1
0,10, two ends of which are two first reinforcing bars 1
They are arranged so as to overlap 0 and 10.

Thereafter, in the area where the first and second reinforcing bars 10 and 20 overlap, the lower end bars 14 and 24 are connected to each other by, for example, connection. Further, the upper reinforcing bar 12 of the first reinforcing bar 10 and the first longitudinal reinforcing bar 26b of the second reinforcing bar 20 are connected by, for example, connection. All of these operations are performed on site. Thereby, the reinforcement arrangement structure of the cloth base with openings is formed.

At this time, the lower end muscle 12, which functions as the main muscle,
Reference numeral 22 denotes a lap joint, and when the diameter of the main reinforcement is d, the overlapping linear length L3 is 45d or more. Further, the upper end streak 24 secures fixing (40d or more) with the length L4 in FIG.

The first and second reinforcing bars 10 and 20
1 and the mutual connection thereof are performed at various places shown in FIG. 1, thereby completing the arrangement of the reinforcing bars for the cloth base 30 with openings.
After that, a formwork is installed and concrete is cast, whereby the cloth foundation 30 is constructed.

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 present invention is not necessarily limited to the recess formed by notching the upper surface of the cloth base 30 in a concave shape as an opening such as the ventilation port 32 or the human communication port 34. The present invention can also be applied to an apparatus having an opening through a window-like hole. In this case, the second reinforcing bar 20
2 can pass through the upper side of the opening.

The reinforcing arrangement according to the present invention can be applied not only to concrete cast-in-place but also to precast foundations.

[0043]

According to each of the first and second aspects of the present invention, the second reinforcing network is disposed only in a special area having an opening, and the second reinforcing network is disposed on the first reinforcing network disposed on both sides thereof. Simply by connecting both ends of the reinforcing bar network, the reinforcing bar work for the opening foundation is completed.

According to the third aspect of the present invention, the formation of the second rebar network adapted to the openings of various sizes in advance reduces the on-site rebar arrangement work.

[0045]

[0046]

[0047]

[Brief description of the drawings]

FIG. 1 is a schematic assembly perspective view showing an example of a reinforcing bar arrangement of a building foundation according to the present invention.

FIG. 2 is a front view of the first reinforcing bar network shown in FIG. 1;

FIG. 3 is a front view of a second reinforcing bar network shown in FIG. 1;

FIG. 4 is a front view of a second reinforcing bar network corresponding to an opening having a size different from that of FIG. 3;

FIG. 5 is a front view showing a bar arrangement structure using the second bar arrangement network of FIG. 3;

FIG. 6 is a front view showing a reinforcing bar structure using the second reinforcing bar network of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 1st reinforcing bar 12 Upper bar 14 Lower bar 16 Stirrup 20 2nd bar 22 Upper bar 24 Lower bar 26 Grid welding wire mesh 30 Fabric foundation 32 Ventilation opening 34 Passage

Claims (3)

(57) [Claims] 1. A vent, in reinforcement structure of the building foundation having an opening such as a human through the mouth, respectively are placed on both sides of the region where the opening of the building foundation is formed, in advance connected to horizontal stripes and vertical stripes A second reinforcing bar arranged between the first reinforcing bar network and the first reinforcing bar network, the horizontal reinforcing bar and the vertical reinforcing bar being previously connected at a position other than a position corresponding to the opening. And a net, and both ends of the second reinforcing net are overlapped and connected on the first reinforcing net, and the reinforcing bar structure of the building foundation with openings. 2. A construction method for a building foundation having an opening such as a ventilation opening, a human communication opening, etc., wherein a vertical streak and a horizontal streak are connected in advance on both sides of a region where the opening is formed, respectively. A step of arranging one reinforcing bar network; and a second bar having a predetermined length formed by previously connecting a horizontal bar and a vertical bar to a region outside the region where the opening is formed between the two first bar bars. 2) arranging two reinforcing bars, and overlapping both ends of the second reinforcing bars on the two first reinforcing bars; Connecting the two first reinforcing bars to each other. 3. The opening according to claim 2, wherein a plurality of types of the second reinforcing bars are provided corresponding to a plurality of types of openings having different sizes formed in the building foundation. Any one of the second reinforcing bars is arranged between the two first reinforcing bars.