JPS61146922A - Method of constructing foundation beam with double slab - Google Patents

Abstract

PURPOSE:To build a foundation having structural reliability, by a method wherein precast concrete vertical plates are located facing each other on a pressure resistant plate part, arrangement of bars for upper and lower beam is effected, and concrete is placed between the vertical plate parts and in the pressure resistant plate part to build an upper slab. CONSTITUTION:A pair of vertical plats A and A' are located facing each other on a pressure resistant plate, and an upper hook part 1a of each rib bar 1 and main bars 2 for an upper beam are arranged. Thereafter, main bars 3 for an lower part are arranged, concretes 5 and 6 are placed between the vertical plates A and A' and in the pressure resistant part, respectively, for integral formation. Groove type bars 8 are coupled between the main bars 2 for the upper beam, and concrete 9 is placed in a slab on a foundation beam to build an upper slab C. This causes the vertical plate to additionally serve as forms for a foundation beam and eliminates a form work, resulting in the possibility to sharply simplify the construction.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of constructing a foundation beam with double slabs.

(Prior art) and (Problem to be solved by the invention)
Generally, in a design where the foundation is a double slab, as shown in Figure 6, pressure plates (α), underground beams (b), and floor slabs (C
) The work was difficult because reinforcing bars and concrete were poured in this order.

In such cases, even if only the underground beams are precast,
It is difficult to integrate the underground beam and the pressure plate, which is unfavorable from a structural standpoint.

In addition, underground beams generally have a large beam size and a thick cross section, so
Even if it was precast, it was heavy and difficult to transport and erect.

(Means for Solving the Problems) The present invention has been proposed to solve these problems, and includes a structure in which the ribs are buried and the hook portions are bent at the upper and lower protruding ends of the ribs. A pair of inner and outer precast concrete vertical plates are installed oppositely on the pressure plate part, and the hook parts of each of the ribs on the upper and lower sides of both the inner and outer vertical plates and the intermediate part thereof,
A method for constructing a foundation beam with double slabs, which comprises arranging upper and lower beam main reinforcements, then pouring concrete between the inner and outer vertical slabs and across the pressure plate, and then constructing an upper slab. This is related to.

(Function) and (Effects of the Invention) As described above, in the present invention, the precast steel is used as a formwork for constructing a pair of inner and outer foundation beams, in which the reinforcing bars are embedded and the hook parts are bent at the upper and lower end protrusions. Concrete vertical plates are made in advance, and one pair of pronated and pronated vertical plates are placed oppositely on a pressure plate, and at the upper and lower parts of both vertical plates, between the hooks of both the inner and outer ribs, and the inner and outer hooks of the upper and lower shoes. After arranging the upper and lower main beam reinforcements, concrete was poured between the vertical slabs and between the pressure plate parts of the above-mentioned inner and outer pairs. A foundation beam is constructed of concrete, and the foundation beam is integrated with the pressure plate.

During this time, the pair of inner and outer vertical plates also serve as the formwork for the foundation beam, so there is no need for formwork work, and construction is significantly simplified.

Next, in the present invention, by constructing an upper slab on top of the foundation beam, a structurally reliable foundation structure in which the upper slab is integrated with the pressure plate and the underground beam pot is constructed.

(Example) The present invention will be described below with reference to the illustrated embodiments.

(AJ Buddha') is a precast concrete vertical slab with one pair of inner and outer sides, and the reinforcing bars (1) on both the inner and outer sides of the foundation beam are buried, and the upper and lower protruding ends of each of the reinforcing bars (1) are bent at 135 degrees, and the upper and lower A hook portion (1α) (IA) is provided.

After completing preparations for pouring concrete on the pressure plate, the pair of precast concrete vertical slabs (
AJ (A') is installed oppositely, and the upper end hook part (1α) (1) of each cost reinforcement (1) (1), and both hook parts (1) (the upper main beam reinforcement (2) is installed between At the same time, lower beam main reinforcement (3) is placed between the lower end hook part (Ib) (Ib) of each cost reinforcement (1 bar 1) and both hook parts (1b) (1b), and Between the main reinforcements (3), groove-shaped reinforcements (4) connecting the inner and outer ribs (11 (1)) are connected, and then between the above-mentioned inner and outer vertical plates (A) and (A') and the pressure plate part. Conch I
J-to (5) and (6) are cast, thus forming a foundation beam constructed by the above-mentioned vertical slabs (A) <A'> and the poured concrete (5), and the above-mentioned poured concrete 17- 6)
The pressure plate (B) constructed by (See Figure 1) Note that the force in the figure is the slab reinforcement arranged on the pressure plate (B).

During this time, the pair of inner and outer precast concrete vertical plates (A) and (A') also serve as formwork for pouring concrete for the foundation beam, eliminating any formwork work and greatly simplifying construction.

Next, channel reinforcements (8) connecting the inner and outer cost reinforcements (1) are connected between the upper beam main reinforcements (2), and slab concrete (9) is poured on the foundation beam to form the upper slab (C). Build.

(See Figure 2) In the figure (IQ is a slab muscle.

Note that a PC board may be used for the upper slab.

In this way, a foundation is constructed in which the pressure plate (B), the foundation beam, and the upper slab (C) are integrated.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

Figures 1 and 2 are longitudinal sectional views showing the steps of an embodiment of the method for constructing a foundation beam with double slabs according to the present invention, Figure 3 is a plan view showing the arrangement of the foundation beam, and Figure 41 is a Exploded view of the foundation beam,
Figure 5 is a slope view of a precast concrete vertical version, and Figure 6 is a vertical cross-sectional view of a foundation beam with double slabs constructed using the conventional construction method. Prisoner (A')...Precast concrete vertical version, (
B)...Pressure plate, ((J...upper slab, (1)
・・Core reinforcing bars, (1α) ・・Hook part, (2) ・・・・・・・・・・Upper beam main reinforcement, (3) ・・・Lower beam main reinforcement, (5) ・・・Pour concrete 1, 1 of foundation beam” − ) , (6)...Concrete pouring agent for pressure plate section Patent attorney Shige Okamoto 3 outside connections Shiro

Claims (1)

[Claims] A pair of inner and outer precast concrete vertical plates, in which reinforcing bars are buried and hooks are bent at the upper and lower protruding ends of the reinforcing bars, are installed oppositely on the pressure plate, and the above-mentioned The main reinforcement of the upper and lower beams is arranged at the hook part of the ribs and the intermediate part thereof, and then concrete is poured between the inner and outer vertical plates and over the pressure plate part, and then the upper slab is constructed. Construction method of foundation beam with double slab.