JPH08105064A - Construction of footing - Google Patents

Abstract

PURPOSE: To improve the extent of workability by way of attaching a connecting form to the specified position after positioning it simply even in case of such as executing it with a wall-like footing block as well as to perform the execution of works in an accurate manner. CONSTITUTION: Two wall-like precast concrete footing blocks 1 are erected at an interspace between two end faces, connecting these end faces of the two blocks 1 with a connecting means. In addition, each connecting form 2 is set up at both sides of the interspace between these end faces of the blocks 1. Each position in the vertical direction of these connecting forms 2 is positioned aright by a positioning engaged means, while these connecting forms 2 at both the sides are joined together through a connecting means. Then concrete is placed beneath the footing blocks 1 and thereby a base footing is formed and simultaneously concrete is placed in space between these connecting forms 2 at both sides between the two end faces of the adjacent footing blocks 1, forming connecting concrete part there.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a foundation using a foundation block made of precast concrete.

[0002]

2. Description of the Related Art Conventionally, as a method of constructing a foundation using a foundation block made of precast concrete, for example, there is one disclosed in JP-A-60-92517. This uses a basic block that is made of precast concrete and has an approximately inverted T-shaped longitudinal section.
Character-shaped base blocks are arranged with a gap between the end faces, the end faces of adjacent base blocks are connected by connecting means, and the formwork for the connecting portion is arranged on both sides of the gap between the end faces of the base blocks and Connect the connecting part formwork with connecting means, and place concrete between the connecting part formworks on both sides between the end faces of the adjacent base blocks to form the connecting concrete part, and connect the base blocks with the connecting concrete part. are doing. In the case of such a conventional example, as shown in FIG. 6 (a), the precast concrete foundation block 1'is a vertical foundation body 1a '.
And a horizontal base foundation 1b 'are formed in a substantially inverted T-shape in vertical cross section, the lower end of the coupling form 2 is set when the connecting form 2 is set. If it is placed on the part 1b ', the vertical positioning of the connecting part form 2 can be performed accurately, and there is no problem during construction. However, when using a precast concrete basic block with an inverted T-shape in vertical cross section as described above, the basic block is also integral, so the weight of the basic block is heavy, and it is transported to the site or installed at the site. However, it is difficult to adjust the position, and especially the work of adjusting the position of the basic block and connecting it with the connecting means, the adjustment in the length direction, and the like are troublesome.

In recent years, in order to solve the problem that the construction is heavy and difficult to construct, a construction has been performed using a wall-shaped foundation block 1 as shown in FIG. 6 (b). In this, the base block 1 is erected with a gap between the end faces, the end faces of the base block 1 are connected by connecting means, and the connecting part formwork 2 is arranged on both sides of the gap between the end faces of the base block 1. At the same time, the connecting part forms 2 on both sides are connected by a connecting means, and concrete is placed below the base block 1 to form a base base 3, and the connecting part forms on both sides between the end faces of the adjacent base blocks 1 are also formed. Concrete is poured between the frames 2 to form a connected concrete portion. That is, only the main body of the foundation is made of precast concrete, and the base foundation 3 is constructed on site. In the case of such an example, since the precast concrete base block 1 is wall-shaped and lightweight, it can be easily transported and constructed, but the connecting part formwork 2 is provided on both sides of the gap between the end faces of the adjacent base blocks 1. There is nothing for positioning the connecting part form frame 2 when setting, and there is a problem that the connecting part form frame 2 slips down and the workability is poor and the work cannot be performed accurately.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to form a frame for a connecting portion even if it is constructed by using a wall-shaped foundation block. The present invention provides a method of constructing a foundation that can be easily positioned and attached to a predetermined position to improve workability and to perform accurate work.

[0005]

In order to achieve the above object, a method of constructing a foundation of the present invention is as follows. A foundation block 1 made of wall-shaped precast concrete is erected with a gap between the end faces to end face of the foundation block 1. They are connected to each other by connecting means, and the connecting part formwork 2 is arranged on both sides of the gap between the end faces of the base block 1, and the position of the connecting formwork 2 in the up-down direction is determined by the positioning and locking means. Between the connection part forms 2 on both sides between the end faces of the adjacent base blocks 1 while connecting the connection part forms 2 with a connecting means and forming concrete under the base blocks 1 to form the base 3. It is characterized in that concrete is poured into the to form the connection concrete portion 4.

Further, a positioning locking means is constituted by a horizontally bent locking edge 5 at the upper end of the connecting part formwork 2 and a corner portion at the upper end of the basic block 1, and the locking edge 5 is set at the upper end of the basic block 1. It is also preferable to engage with the corners of the to position the connection part form 2 in the vertical direction. Further, the step locking portion 6 is formed by the step portion 6 formed on the outer surface of the lower portion of the basic block 1, and the lower end of the connecting portion form 2 is placed on the step portion 6 to move the connecting portion form 2 in the vertical direction. It is also preferable that the positioning is performed.

[0007]

According to the above structure, the connecting part form 2 can be easily positioned and attached at a predetermined position in the vertical direction by the positioning and locking means, so that the workability can be improved and the work can be performed accurately.

[0008]

EXAMPLE The present invention is to construct a foundation by using a foundation block 1 formed of precast concrete in a wall shape, only the main body of the foundation is formed of precast concrete, and the base foundation 3 is constructed on site. It is a thing.
Connection bolts 8 are provided so as to project from the end faces of the wall-shaped base block 1 at both ends in the longitudinal direction. As the basic block 1 made of precast concrete, there are a linear basic block 1A when viewed from a plane, an L-shaped basic block 1B when viewed from a plane, and a T-shaped basic block 1C when viewed from a plane. . A rectangular plate-shaped base body 9 for supporting the lower surface of the basic block 1 when the basic block 1 is installed is also formed of precast concrete.

A foundation is constructed as follows using the foundation block 1 made of precast concrete constructed as described above. First, in the field, the site of the site to be formed as a foundation is surveyed, terrained, and used, then root cutting is performed, and then the stone-cutting groundwork in which the stone-cutting is spread over the stones. Next, the base body 9 made of precast concrete is installed on the ground covered with cobblestone. At the same time when the base body 9 is installed, base rebars 10 for forming the base foundation 3 are laid out, and base formwork 11 is erected on both sides along the base rebar 10. Next, a plurality of basic blocks 1 are arranged side by side so that the basic blocks 1 are placed on the base body 9. When a plurality of basic blocks 1 are arranged, a predetermined gap is provided between the end faces of the adjacent basic blocks 1 and the end faces of the adjacent basic blocks 1 are connected to each other. At this time, a nut 12 is screwed and connected to the connecting bolt 8 protruding from the end surface of the base block 1.

With the end faces of the base block 1 connected to each other, the connecting part forms 2 are set on both sides of the gap between the end faces of the base block 1 as shown in FIG. A locking edge 5 for positioning is horizontally bent at the upper end of the connecting part form 2, and the locking edge 5 is brought into contact with a corner of the upper end of the base block 1 so as to move in the vertical direction. Has been positioned. With the connecting part form 2 positioned, the connecting part forms 2 on both sides are joined as follows. The through holes 13 are formed in the molds 2 for connecting portions on both sides.
The rod-shaped separator 14 disposed between the connecting part molds 2 on both sides is inserted into the through holes 13 to form the male screw part 15 from the outer surface of the connecting part formwork 2. The ties 16 are screwed together to connect the connecting part forms 2 on both sides.

As described above, the foundation block 1, the base foundation form 11 and the connecting part form 2 are assembled as shown in FIG. 3, and concrete is poured as follows. First, concrete is poured between the base foundation molds 11 until it is flush with the upper end of the base foundation molds 11.
To form. At this time, the base body 9, the base rebar 10, and the lower portion of the foundation block 1 are embedded in the concrete of the base foundation 3. After the concrete is cast on the base foundation formwork 11, the concrete is placed between the end faces of the base block 1 and the connecting part formworks 2 on both sides between the end faces of the base block 1 and the top face of the base block 1 as needed. The connection concrete portion 4 is formed by pouring to a position where it becomes one, and the foundation is constructed as shown in FIG. After the foundation is constructed and the concrete is hardened, the base foundation formwork 11 and the connecting part formwork 2 are removed to complete the construction. The connecting part form 2 may be left as it is without being removed. In this case Form Tie 1
Remove only 6.

In the above embodiment, the connecting frame 2 is positioned with respect to the basic block 1 by the locking edge 5 provided at the upper end of the connecting frame 2, but as shown in FIG. You may make it position by providing the step part 6 in the outer surface of the part embedded by the base 3. That is, the step portion 6 is provided by projecting the dowel 6a on the lower outer surface near the end surface of the base block 1, and the lower end of the connection part form 2 is provided with the step portion 6a.
The lower end of the connecting part form frame 2 is positioned by placing it on the
The upper end of the connection part form 2 can be aligned with the upper end of the basic block 1.

[0013]

As described above, according to the present invention, a wall-shaped precast concrete base block is erected with a gap between the end faces and the end faces of the base blocks are connected by a connecting means. Forming the connecting part formwork on both sides of the gap, connecting the connecting part formworks on both sides with the connecting means, and placing concrete below the foundation block to form the base foundation and the adjacent foundation block Since concrete is laid between the end faces between the formwork for connecting parts on both sides to form the connecting concrete part, a wall-shaped foundation block is used,
The base foundation is to be constructed on-site, and the weight of the foundation block is lighter than the case where a precast concrete foundation block with a substantially inverted T-shaped vertical cross section is used, making it easy to transport to the site and install on site. Of course, it is easy to perform, and since the positioning locking means positions the vertical position of the connecting form, the connecting form can be positioned and locked even if a wall-shaped basic block is used. The device can be easily positioned and attached at a predetermined position in the vertical direction by means of the means, so that the workability can be improved and the work can be performed accurately.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a state in which a connecting part formwork according to an embodiment of the present invention is attached.

FIG. 2 is a perspective view showing a state where the above basic blocks are connected by a connecting concrete portion.

FIG. 3 is a perspective view showing the entire construction of the above construction.

FIG. 4 is a perspective view of a state where concrete is poured from the state of FIG.

FIG. 5 is a perspective view illustrating a state in which a connecting part form of another embodiment of the same is attached.

6A and 6B are explanatory views for explaining a conventional example.

[Explanation of symbols] 1 foundation block 2 formwork for connecting part 3 base foundation 4 connecting concrete part 5 locking edge 6 step part

Claims (3)

[Claims] 1. A wall-shaped precast concrete base block is erected with a gap between the end faces, the end faces of the base block are connected by connecting means, and the connecting portions are provided on both sides of the gap between the end faces of the base block. Place the formwork, position and lock the connecting formwork in the up-down direction, connect the formwork for connecting parts on both sides with the connecting means, and place concrete below the foundation block. A method for constructing a foundation, characterized in that a concrete foundation is formed by forming a base foundation and placing concrete between the formwork for connecting portions on both sides between end faces of adjacent base blocks. 2. A positioning locking means is constituted by a horizontally bent locking edge at the upper end of the connecting part form and a corner portion at the upper end of the basic block, and the locking edge is at the upper corner portion of the basic block. The method for constructing a foundation according to claim 1, wherein the form of the connecting portion is locked and positioned in the vertical direction. 3. A positioning locking means is formed by a step formed on the outer surface of the lower portion of the base block, and the lower end of the connecting part form is placed on the step to position the connecting part form in the vertical direction. The method for constructing a foundation according to claim 1, wherein