JPH10331172A - Dwelling house foundation structure with precast concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate site works and save labor therein by forming a precast concrete foundation to suit the room layout of a dwelling house being constructed. SOLUTION: In the rising footing of a foundation for a dwelling house, straight members and two-directional, three-directional, and four-directional intersection members are prepared using precast concrete, and their main bars are connected together so that consolidation as foundation is established. In the direction of crossing them, top bars 6 and belly bars 8 are installed, and in the vertical direction, two to four legs 2 per piece with the bottom of the footing partially left missing are furnished on the body 1 where reinforcing bars are installed appropriately, and a plurality of concrete projections as the belly 3 are furnished in the missing part between the legs 2 so that a foundation structure is accomplished. The mat foundation itself is made in the precast structure, and one end of the bottom part of foundation is made in precast concrete previously, and the exposed bars in the other end part are used to generate fixation to the mat foundation members, and between them the body is hung down from above using a winch, etc., and is installed so that the consolidation of the foundation is achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is used for foundation work of house construction, and contributes to the drying of a wooden house particularly suited to the climate of Japan, and is expected to be mass-produced and quality controlled in a factory in advance as a precast. It is possible to meet the needs of high durability and high performance.

[0002]

2. Description of the Related Art Conventionally, the construction of a foundation for a house or the like, which is generally called a conventional construction method, is performed after a floor moat, a split rock compaction, and a dumping machine.
After assembling the main reinforcing bars and reinforcing bars of each part, formwork is installed and concrete is poured into this formwork.After a certain curing period after concrete placement, the formwork is removed and the foundation is removed. It was to be completed.

[0003] In addition, several methods have been disclosed in each gazette so far as the shortening of the construction period and the high durability and high performance standards, regarding the shape of the main body of the foundation structure made of precast concrete for houses and the like and the invention of joints, etc. From the perspective of integrating the fundamentals required by the law, there are advantages and disadvantages.

[0004] That is, the cloth portion and the bottom portion are integrated, and the fixing length of the reinforcing bar is secured in the length direction, or the whole is integrated by a mechanical joint. There is a type that separates and integrates the whole by attaching each at the site.

[0005]

As described above, as described above,
Compared with the conventional method, the superiority of the precast concrete foundation structure is obvious.

[0006] Accordingly, it is an object of the present invention to solve the problem of the disclosed foundation structure using precast concrete.

[0007] First, when the cloth part and the bottom part are integrated, when transporting from the manufacturing factory to the construction site, the load due to uneven shape and the weight per unit become large. Is large.

[0008] Further, it is difficult to determine the horizontal level, which is a reference for construction, of a bottom portion having a relatively large surface unless sufficient consideration is given to installation at the site. This is because the main body is heavy and it is troublesome to secure the level of the surface with large contact, so if this surface is not horizontal, the top of the base will never be horizontal.

Next, when the cloth portion and the bottom portion are separated from each other, since each of them becomes a single plate, it is possible to avoid troubles in loading and increase in weight at the time of transportation, but it is essential to integrate the essential foundation. There is a doubt in the part of the construction, and there is anxiety about the performance as a basis after assembling and installing.

Further, there is a method in which only the cloth portion is made of precast concrete. However, if it is assumed that the construction period is shortened and labor is saved on site, the field of view should be expanded to the bottom portion and the solid foundation.

On the other hand, as for the joints of the reinforcing bars, there are two types, one in which the reinforcing bar is projected from the side end in anticipation of the fixing length, and the other in which the reinforcing bar does not jump out from the side end to cope with the mechanical joint. From the viewpoint of labor saving at the site, mechanical joints should be recommended.

Therefore, in the vertical direction, an insert 5 was prepared on the base body for anchor bolts for fixing the base, and in the horizontal direction, a penetrating insert or a high nut was prepared for a mechanical joint. The relationship between the fit and the joint has been improved.

[0013]

According to the present invention, the cloth portion and the bottom portion are separated from each other, because it is fatal that the load per unit and the weight per unit due to the uneven shape and the weight per unit are fatal. Therefore, the integrity as a basis is questioned.
Cast-in-place concrete is filled in the missing portion between the legs 2, and the cast-in-place concrete is similarly filled in a portion between both ends of the base 4 which is precast concrete in advance. Thereby, the cloth part 1 and the bottom part 4 can be integrated.

At the same time, a projection as an abdomen 3 is provided in a lacking portion between the legs 2 in order to be familiar with cast-in-place concrete and to cope with lateral slippage.

Further, in the horizontal indexing at the site, since the ground contact area at the lower end of the leg portion 2 is extremely small, if the horizontal level is maintained at this portion, the entire horizontal level is secured. That is, even if the cloth portion 1 and the bottom plate portion 4 are not necessarily strictly vertical, the horizontal top of the foundation can be easily secured.

[0016]

[Function] Since the cloth part 1 and the bottom part 4 are separate bodies, the weight of each part is also relatively small, and the center material is a straight material that matches each module, and the unified objects such as corners and intersections Doing so makes it easier to handle.

[0017]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. First, a layout drawing of the precast concrete foundation is created based on the floor plan of the house. At this time, each length of the precast concrete foundation is determined according to the module, so several lengths will be combined

This will be described in the procedure of construction as follows.

After the floor moat has a predetermined depth, the split rock is sufficiently compacted to a required thickness according to the soil properties, and the horizontal level is measured on the upper surface thereof.

Thereafter, the mortar or the like is partially dropped at the assumed points, and the ground ink is drawn to determine the wick. After completion of the black ink, the installation position of the leg 2 is clarified, and the level at the installation position of the leg 2 is secured using a leveler or the like. However, in the present invention, the limit of the adjustment height for securing horizontality is set to about 20 mm.

In the present invention, since it is assumed that the step of the conventional disposable concrete is omitted, the shape of the precast portion is taken into consideration so that the concrete to be cast and the split stone can be blended well.

Next, in accordance with the ground ink, the bottom part 4 in which both ends of the base according to claim 2 are precast concrete in advance is basically carefully installed from the outer peripheral part of the foundation.

After the installation, a reinforcing bar having the same diameter as the joint and having a length sufficient for fixing both sides with the seam at the center is attached to the bottom main reinforcing bar 1.
Put it on 0.

Next, the cloth portion 1 of the first embodiment is suspended from above by a heavy machine or the like so as to be coincident with each other while checking the leg position designation line 13 where the front leg portion 2 is installed. Carefully install from the outer periphery of the foundation. However, immediately before installation, the penetrating insert or high nut of the mechanical joint for the upper reinforcement 6 and the lower reinforcement 7 of the cloth portion 1 is attached to one of the connection portions. After installing all the cloth parts of claim 1,
The penetrating insert or high nut is adjusted to be rewound to a predetermined position, and the joint of the upper end line 6 and the lower end line 7 is completed.

Since the present invention is a completely precast base, no formwork is required. Therefore, concrete can be poured from the bottom part 4 immediately after the joint of the upper end of the cloth part 1 is completed.

When the placing of the bottom part 4 is substantially completed, concrete or non-shrink mortar or the like is sequentially poured from above the seam of the cloth part 1 while paying attention to filling in the shacotter 12 or the like. At this time, be careful not to contaminate the top end of the foundation body with concrete.

The joint of the precast of the cloth part 1 is joint 11
And do the necessary coking. In order to make the joints inconspicuous, joints 11 at equal intervals are arranged on the whole.

[0028]

As described in detail above, the present invention maximizes simplicity of construction and labor saving in foundation work while maintaining a predetermined structural strength.

The dimensions of secondary concrete products are difficult to determine due to the tolerances in the manufacturing process, but by minimizing the dimensional errors through precise manufacturing and quality control at the factory, Is more convenient.

Therefore, since the concrete joint in the length direction is eliminated, no formwork is required on site,
It greatly contributes to simple construction and labor saving.

The cloth portion 1 and the bottom plate portion 4 are further simplified.
It is the most excellent in terms of the foundation structure that the abdominal projections 3, the lower end bar 7, the auxiliary reinforcing bar 9 and the main bar 10 of the base plate, and the splitter stone, etc. are integrated by concrete with the voids of the cloth part 1. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a foundation structure of a precast concrete house made of a straight member according to claims 1 and 2 of the present invention.

FIG. 2 is a perspective view of the foundation structure of the precast concrete of the house according to claims 1 and 2 of the present invention, which is made of two-way intersection members.

FIG. 3 is a perspective view of the foundation structure of the precast concrete of the house according to claim 1 and claim 2 of the present invention using a three-way intersection member.

FIG. 4 is a perspective view of the foundation structure of the precast concrete of the house according to claim 1 and claim 2 of the present invention using the four-way intersection members.

FIG. 5 is a front view of a straight member.

FIG. 6 is a rear view of a straight member.

FIG. 7 is a top view of a straight member.

FIG. 8 is a bottom view of a straight member.

FIG. 9 is a side view of a straight member.

FIG. 10 is a front view of a two-way intersection material.

FIG. 11 is a side view of a two-way intersection material.

FIG. 12 is a top view of a two-way intersection material.

FIG. 13 is a bottom view of the bidirectional intersection material.

FIG. 14 is a front view of a three-way intersection material.

FIG. 15 is a rear view of the three-way intersection material and a side view of the four-way intersection material.

FIG. 16 is a top view of a three-way intersection material.

FIG. 17 is a bottom view of the three-way intersection material.

FIG. 18 is a top view of a four-way intersection material.

FIG. 19 is a bottom view of the four-way intersection material.

FIG. 20 is a front view of a base material corresponding to a straight material.

FIG. 21 is a top view of a base material corresponding to a straight material.

FIG. 22 is a bottom view of a base material corresponding to a straight material.

FIG. 23 is a side view of a base material corresponding to a straight material.

FIG. 24 is a top view of a base material corresponding to a two-way intersection material.

FIG. 25 is a side view of a base material corresponding to a two-way intersection material.

FIG. 26 is a top view of a base material corresponding to a three-way intersection material.

FIG. 27 is a top view of a base material corresponding to a four-way intersection material.

FIG. 28 is a sectional view showing a combination of the basic structures according to claims 1, 3, and 4 of the present invention.

FIG. 29 is a top view of a base material corresponding to a straight material and a solid foundation.

FIG. 30 is a front view of a base material for straight materials and solid foundations.

FIG. 31 is a side view of a base material corresponding to a straight material and a solid foundation.

FIG. 32 is a top view of a solid foundation (three holes).

FIG. 33 is a front view of a solid foundation (3 holes).

FIG. 34 is a side view of a solid foundation (three holes).

FIG. 35 is a top view of a solid foundation (9 holes).

FIG. 36 is a front view of a solid foundation (9 holes).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base main body 2 Leg part 3 Abdomen 4 Bottom part 5 Insert 6 Main muscle (upper muscle) 7 Main muscle (lower muscle) 8 Auxiliary reinforcement (abdominal muscle) 9 Auxiliary reinforcement (sterlap) 10 Bottom major reinforcement 11 Joint 12 Shark cotter 13 Leg position designation Wire 14 Chamfer 15 Solid foundation 16 Hole for concrete filling 17 Cast-in-place concrete

Claims (4)

[Claims] 1. In the rising cloth portion of the foundation, a straight material of precast concrete is appropriately prepared for a required length, and a cast of precast concrete is similarly prepared at a two-way intersection, a three-way intersection, and a four-way intersection. The main muscles are connected by mechanical joints to measure the integration as a foundation.The upper end and the abdominal muscles are arranged in the horizontal direction, and the reinforcing muscles are arranged appropriately in the vertical direction. A house with a shape in which two to four legs are integrally provided without a part of the bottom of the part and two or more concrete projections are installed as abdomen in the missing part between the legs. Foundation structure. 2. At the bottom portion of the foundation, both ends of the bottom plate are precast concrete in advance according to the length of claim 1, and the main body according to claim 1 is suspended from above by a heavy machine or the like at a construction site. By placing concrete on site at the gap,
The basic structure of a house that integrates the foundation. 3. In the bottom of the foundation, one end of the bottom is precast in advance according to the length of claim 1, and the exposed reinforcing bar at the other end is used for fixing to the solid foundation member. A basic structure of a house in which the main body according to claim 1 is suspended from above by means of a heavy machine or the like, and the concrete is poured into the gap, thereby integrating the foundation. 4. The solid foundation portion is precast, and the rising fabric portion and the bottom portion are firmly connected to each other by securing the fixing length, and concrete is poured into the gap at the site to integrate the foundation. The basic structure of the planned house.