JP2624479B2 - How to build a ramen structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing a ramen structure frame.

A-2. Prior Art Conventionally, as a method of constructing a building frame using precast concrete, for example, as shown in FIG. 6, a precast concrete column (1) of a wire and a precast concrete beam (2) are joined together. In (A), a method of joining with cast-in-place concrete or as shown in Fig. 7, a precast concrete wall material of a face material (3) (3)
And a three-dimensional type in which columns (4), beams (5) and floorboards (6) are integrally formed of precast concrete at a factory as shown in FIG.

A-3. Problems to be Solved by the Present Invention In the method shown in FIG. 6, the number of parts is increased, and the management work and the on-site joining work are troublesome. This is a joint that is the most unfavorable in structure because the joint is made at the portion where the connection is made. In addition, since the system shown in FIG. 7 has a wall-type structure, there is a problem that the flexibility of construction is poor due to restrictions such as a certain amount of walls, a wall ratio, a floor height, a wall thickness, and the like according to building standards. Further, the system shown in FIG. 8 has a problem in that since it is three-dimensional, the transportation efficiency is poor, the transport unit weight is heavy, a large crane is required, and the land on the site is limited.

Therefore, an object of the present invention is to propose a method that can solve the above-described problems and can construct a simple and strong rigid frame structure.

B. Configuration of the Invention b-1. Means for Solving the Problems In order to solve the above problems, the present invention provides a structure of a ramen structure on a surface in which columns and beams are integrally formed by precast concrete. Using a plurality of these components, on-site, these are arranged vertically and horizontally, a floor plate is erected between the upper surfaces of the plurality of components arranged in this way, and the floor plate and the components are rigidly connected, A three-dimensional frame structure is constructed by these components and the floorboard.

B-2. Examples Next, examples of the present invention will be described. First, as a structure used in this construction method, for example, FIGS. 1 (A) and 1 (B)
(C) As shown in (D), a pillar (7) forming one frame surface
Then, the beam (8) is integrally formed with precast reinforced concrete to prepare a structural body (9) having a rigid frame structure in which the column (7) and the beam (8) are rigidly connected. This structure (9)
As shown in FIG. 1 (A), there is no projecting beam, as shown in FIGS. 1 (B) and 1 (C), a projecting beam (10) integrally protruded on one or both sides, (D) ), A projecting beam (10) is integrally protruded from a mouth-shaped one, and other desired shapes are used. Next, a plurality of the above-mentioned desired structures (9) are used, and these are arranged orthogonally in the field, and as shown in FIG.
Construct a frame surface in the (Y) direction. Each component (9) is connected to the foundation, but the connection to the foundation is omitted in the drawings. Further, the components (9) are not rigidly connected to each other. Next, as shown in FIG. 3, a floor plate (11) is installed on the upper surface of each component (9) arranged as described above. This floorboard (11) is adjacent to each other (9)
A plurality of floorboards (11) are laid so as to be common to the components (9) arranged in the vertical and horizontal (X) and (Y) directions, and the floorboard (11) and the upper surface of each beam (8) are rigid. Are combined.
As the structure of the floorboard and the method of rigid connection, for example,
As shown in the figure, the connecting reinforcing bar (12) is placed on the upper surface of the beam (8) in advance.
A semi-finished product in which concrete (14) is cast only in the lower half of the reinforcing bar (13) for floor plate formation is used as a floor plate, and an end of the semi-finished floor plate is connected to the beam ( 8) placed on the floor, the floor panel forming reinforcing bar (13) and the connecting reinforcing bar (12) are welded to each other with a reinforcing bar (12a), and then concrete is put on the upper part of each of the reinforcing bars (12) ( 13) Cast in place to the top to form floorboard (11a). As shown in FIG. 5, a connecting reinforcing bar (15) is protruded from the end face, a precast concrete floor plate (11b) having a shear cotter is used, and its end is placed on the beam (8). The connecting rebar (15) may be welded to the connecting rebar (12) projecting on the beam (8) in advance as described above, and the portion may be filled with concrete.

C. Effect of the Invention As described above, in the present invention, since the structure is formed by integrally molding the column and the beam with precast concrete, the column and the beam are formed separately as in the related art, and these are formed on site. The number of parts is reduced as compared with the case where the connection is made by the above, and the joining work on management and on-site becomes easier. Further, the connecting portion at the site is a connecting portion between the beam and the floor plate, and particularly, the connecting portion between the column and the beam where the stress is concentrated is rigidly connected by integral molding, so that a strong building can be constructed. Also, since each component is connected via a floor plate rigidly connected to the beam, the horizontal load is transmitted and shared through the rigid floor plate to the component of the surface arranged in the same direction as the load acting direction, You can build a building with earthquake resistance. In addition, since the structural body has a ramen structure, there is no restriction seen in the wall-type structure, and a rigid building can be constructed with a large degree of freedom in configuration, such as a pillar having a short finding. Furthermore, since each component is lithographic,
Compared to conventional three-dimensional ones, factory production is easy and transportation efficiency is good, and there is no need for a large crane and there are few restrictions on land at the site.

[Brief description of the drawings]

1 (A), (B), (C), and (D) are front views showing four examples of a structure used in the present invention, FIG. 2 is a perspective view showing an arrangement state of the structure, and FIG. Perspective view of a state where a floorboard is installed,
4 and 5 are side sectional views showing two examples of a connection state between the floor plate and the beam, and FIGS. 6 to 8 are perspective views showing three examples of the related art. (7) ... pillar (8) ... beam (9) ... structure (11) ... floorboard

Claims (1)

(57) [Claims] 1. A structure having a planar frame structure in which a pillar and a beam are integrally formed from precast concrete is provided, and a plurality of such structures are used to arrange them vertically and horizontally at a site. A floor plate is erected between the upper surfaces of the plurality of arranged structures and the floor plate and the structure are rigidly connected to each other, and a three-dimensional frame structure is constructed by each of the structures and the floor plate. How to build a ramen frame.