JPS6095034A - Foundation block - Google Patents

Abstract

PURPOSE:To build a strip footing without using forms, by a method wherein, after foundation blocks, each of which is formed in the sectional shape of a foundation shape, has openings, through which concrete is poured and which are formed in an upper surface, and a hollow part having an anchor bolt and bars contained therein, are built in tandem form with each other, concrete is placed. CONSTITUTION:A foundation block 1 is constituted such that it has a sectional shape formed in a foundation shape, openings 4 and 5 are provided in a hollow base body 2, an anchor bolt 6 is previously disposed in a hollow part 3, and reinforcing bars 7 are contained therein. Further, a base body 2 consists of a footing part 10 and a rise part 11, the footing part 10 has a bottom plate 14, sides 15, and an upper surface, and the rise part 11 has side plates 11 and an upper surface 17 having the openings 4 and 5 formed therein. After the foundation blocks 1 are disposed in tandem form with each other, concrete is poured in the hollow part 3 through the openings 4 and 5 to construct a strip footing which has high precision and excellent quality and is firm.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a foundation block whose cross section is formed into a basic shape and which can form a foundation without requiring formwork work.

[Background technology]

Conventionally, to form a cloth foundation, a formwork was formed and concrete was poured, but forming the formwork required various materials and the form-setting work was time-consuming. This resulted in increased costs and poor work efficiency. Furthermore, in such foundations, the anchor bolts cannot be positioned accurately, resulting in variations in their positions, and when the positions are corrected by chiseling or the like, the strength of the foundation is reduced.

[Purpose of the invention]

An object of the present invention is to provide a foundation block which is hollow and can form a foundation by pouring concrete into the hollow part, and which can solve the above-mentioned problems.

[Disclosure of the invention]

An embodiment of the present invention will be described below based on the drawings.

In FIGS. 1 and 2, a foundation block 1 includes a hollow base 2 having a basic cross-section, an opening 4.5 formed therethrough, and an anchor bolt 6 pre-installed in the hollow portion 3. It houses reinforcement 7.

The base body 2 matches the cross-sectional shape of a cloth foundation having a footing part 10 and a rising part 11, and includes a bottom plate part 14 forming the bottom surface of the footing part 10, and a five-shaped part 15 forming the side and top surfaces thereof. , Rising part 1 rising from the inner end of L Ube
By using the peripheral wall 13 to form the side plate part 16 forming the side surface of the side plate 1 and the upper plate part 17 provided at the upper end of the side plate part 16 and forming the top end of the rising part 11, A hollow part 3 is formed.

The peripheral wall 13 is made of mortar, an outer layer 1 made of lightweight mortar.
A reinforcing material 21 made of lath, wire mesh, perforated plate, etc. is interposed between the outer layer portion 9 and the inner layer portion 20 for reinforcement.
The outer surface of 9 is a decorative surface with a smooth finish. The upper plate part 17 is formed with a U-shaped notch at one end of the base body 2 to form the opening 4, and a through hole 23 through which the anchor bolt 6 is inserted is bored in the center. The vicinity of the through hole 23 is cut into a rectangular shape, and the opening 5 is provided therethrough.

Each opening 4.5 communicates with the hollow part 3, and in this embodiment, both ends of the opening 5 and the inner end of the opening 4 or the upper plate part 17
Bolt holes 29 and - are provided at the other end, and the side plate portion 16
Bolt holes 30 are also formed at the intermediate heights at both ends of the bolts. The bolt holes 29 and 30 are as shown in Figure 2.
A metal plate 31 provided with screw holes is formed by being embedded in the peripheral wall 13 so as to be flush with the outer surface of the outer layer portion 19 thereof. After connecting adjacent foundation blocks, the opening 4 is formed using the bolt holes 29 and 29 that sandwich the opening 4, and the opening 5 is formed using the bolt holes 29 and 29 on both sides of the cover plate. 34 can be bolted and shielded. Note that a sealing material is provided on the back surface of the cover plate 34. Further, bolt holes 30 provided in the side plate portions 16 screw together joint plates 36 that connect adjacent foundation blocks.

Further, the anchor bolt 6 is inserted into the through hole 23 from below by using the opening 5, and the upper and lower parts are aligned with the holes 1 to 1.
In addition to being pre-installed by stopping, the reinforcing bars 7 are housed in the hollow portion 3. In this embodiment, the reinforcing bars 7 have a ladder shape in which an upper end reinforcing member 7a and a lower end reinforcing member 7b are connected by a connecting reinforcing member 7c, and the reinforcing bars 7 are attached using support pieces 8 that are stretched between the side plate portions 16. Further, threaded portions are formed at the ends of the upper end reinforcement 7a and the lower end reinforcement 7b, and a connecting nut 7d is coupled to the opposite end.

Further, the foundation blocks 1 are joined together using a connecting block 42. The connecting block 42 has fitting portions 43 that fit into the hollow portion 3 projecting from both sides of the flange 44 .

In addition, the foundation block 1 illustrated in FIG.
2. Basic blocks 1a--11b are used to form the central part of A3, and are also formed into L- or T-shapes at each corner and T-shaped intersection, and Anchor bolts 6 are pre-installed on the foundation blocks La, lb at the center of their intersections, and the foundation blocks 1a, l
B is connected using another basic block IC which is short and does not include the anchor bolt 6. Furthermore, basic block 1
ICs a, b, and IC each have the same configuration as the basic block 1.

However, the basic block 1 uses the connecting block 42 to
And by using the foundation blocks 1a to IC, etc., it can be arranged in the shape of the cloth foundation A, and the opening 4 located in the part
Alternatively, leave the opening 5 and cover it with a cover plate, 33, 34, and keep the connecting part airtight using a sealant, etc., and then pressurize and feed concrete from one opening 4 or 5 to create a hollow. By filling the inside of the portion 3, the cloth foundation A can be formed with high precision and efficiency. Incidentally, the concrete may simply be poured, in which case the other openings 4.5 can be opened. Further, in that case, it is also possible to omit the bolt hole 29 or the connecting block 42.

〔Effect of the invention〕

As described above, the foundation block of the present invention has a hollow shape, has an opening for pouring concrete, and is pre-installed with anchor bolts, so that it can be integrated with high precision, high quality, and firmly by pouring concrete. A cloth foundation can be formed, eliminating the need for formwork, shortening the construction period, and reducing component costs. Furthermore, since the foundation block can be manufactured with high precision in a factory, it can have many effects such as helping to stabilize and improve the accuracy of the foundation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, FIG. 2 is a cross-sectional view illustrating the peripheral wall thereof, and FIG. 3 is a plan view illustrating the usage state of the foundation block of the present invention. 2...Base body, 3-Hollow part, 4.5-...Opening part,
6-′・Anchor bolt, 7・-・Reinforcement. Patent applicant National Housing Industry Co., Ltd. Agent Patent attorney Tadashi Naemura

Claims (1)

[Scope of Claims] (11) A foundation block formed by pre-installing anchor bolts in a hollow base whose cross section has a basic shape and which has an opening communicating with the hollow portion for pouring concrete. (2) The above-mentioned The foundation block according to claim 1, wherein the hollow portion accommodates reinforcement.