JP3213103B2 - Composite brace and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brace incorporated in a ramen structure or the like, and more specifically, a stiffening concrete part for preventing buckling of a brace made of metal such as flat steel. The present invention relates to an arranged composite brace and a method of manufacturing the same.

[0002]

2. Description of the Related Art In a conventional composite brace, a brace material such as flat steel is set in a formwork for producing a concrete part for stiffening, and concrete is cast in that state to be integrated with the brace material. It was produced by molding a concrete part.

[0003]

However, in the case of the above conventional technique, the stiffening concrete part must be manufactured in a state where the brace material is set in the manufacturing form, so that the concrete part is required. It is necessary to produce a brace material before producing a. In other words, it is necessary to perform the production of the brace material and the production of the concrete part in that order, and there is a disadvantage that productivity is lacking. Particularly, when the construction process is imminent, it may be a bottleneck in the process. An object of the present invention is to provide a composite brace having high yield strength and good productivity and a method for producing the same.

[0004]

A feature of the composite brace according to the present invention is that a plurality of precast concrete members are arranged around a brace material to constitute a concrete part, and the precast concrete members are connected to the brace.
The attachment means for attaching the brace member is provided in a state held at a position sandwiching the wood in the thickness direction Rutotomoni, Pureki
Just concrete member can be moved with respect to brace material
It is in the point configured .

[0005] It is preferable to provide a mounting means by providing a bolt and a nut for connecting the two precast concrete members positioned so as to sandwich the brace material from the thickness direction thereof.

A feature of the method for producing a composite brace according to the present invention is a method for producing a composite brace in which a stiffening concrete portion for preventing buckling of a metal brace is disposed around the metal brace. Then, place a plurality of precast concrete members around the brace material, and place the precast concrete members in the thickness direction of the brace material.
With the brace material
Is attached to the brace material so as to be movable with respect to.

[0007]

According to the present invention, since the stiffening concrete portion is constituted by the precast concrete member, the concrete portion can be manufactured independently of the brace material. In addition, the brace material is sandwiched from the thickness direction by the mounting means for the precast concrete member .
It can be installed at any time if the brace material and the precast concrete member are aligned. And can be assembled on site.

Also, the precast concrete member is shaken.
Since it is configured to be movable with respect to the base material, the brace
The tensile and compressive forces applied to the material are precast concrete
It does not act on the member, and both are integrated
Brace material can withstand as well as tied
Prestressed concrete members
Avoiding damage such as cracking,
The overall proof stress is improved.

Particularly when the mounting means is composed of bolts and nuts, an existing and easy technique of mounting with bolts and nuts can be used for mounting.

[0010]

According to the invention thus, according to the present invention, it can produce the brace and concrete part at the same time, the composite brace and its manufacturing method can be manufactured with good productivity, substantially
It is possible to provide it while improving the strength . In particular, according to the second aspect, the means for attaching the precast concrete to the brace material can be configured at low cost, and the attachment can be performed with good workability.

[0011]

EXAMPLE 1 Example 1 As shown in FIG. 1, a brace BR that is incorporated in a rigid frame composed of columns C and beams B to suppress interlayer displacement is provided as shown in FIGS. A plate-shaped brace made of a steel plate whose upper end is welded and fixed to the lower surface of the upper beam B via a backing material Bb, and whose lower end is welded and fixed to the upper surface of the lower beam B via a backing material Bb. Material 1 and its brace material 1
And a concrete part 2 for stiffening arranged around the brace material 1 in order to prevent buckling.

[0012] Concrete section 2 has two precast concrete parts 2A arranged in a state of sandwiching the brace 1 from its thickness direction, and connecting them to each other transverse buckling preventing position the precast concrete parts 2A with (i.e. Position where brace material 1 is sandwiched from the thickness direction)
And mounting means for attaching to the brace material 1 while holding the brace material.

The precast concrete member 2A is a double reinforcing reinforcing bar 2 constructed in a mesh or lattice reinforcing structure.
a in the thickness direction of the brace material 1 with the brace material 1 sandwiched therebetween, and the position of the brace material 1 is regulated in the in-plane direction by abutment. It has a recess into which the brace material 1 is fitted. Further, metal parts 2b and fixing streaks ba for preventing end breakage are fixed to the upper and lower ends. This hardware 2b and fixing line b
a is integrated into the mold during molding, but may be fixed after molding, and the reinforcing bar 2a is of a single arrangement as shown by a two-dot chain line in the figure. There may be.

The mounting means is provided with a bolt 3 and a nut 4 for connecting the mutually pressed parts of the precast concrete member 2A at a plurality of vertical positions. The bolt 3 and the nut 4 that connect the upper and lower ends are provided in a state in which the hardware 2b is fastened together.

The tensile force and pressure applied to the brace material 1
The compressive force is not transmitted to the precast concrete member 2A
Precast concrete member 2A
Are movable with respect to the brace material 1. Sand
In addition, as the brace BR, the side end face of the brace
Structure with flexibility formed between the side end surface of the part, so-called ambon
The structure is such that when interlayer displacement occurs,
It is configured such that only the material 1 moves.

[Embodiment 2] The end of the brace BR of Embodiment 1 is constructed as follows. That is, as shown in FIGS. 5 to 7,
In a state where the precast concrete member 2A is attached to the brace material 1, a metal member 2c for preventing the end destruction having a T-shaped cross section sandwiching the brace material 1 from the thickness direction is fixed to the end of the precast concrete member 2A. A liner 2d is interposed between both sides of the brace material 1 between the opposing sides 2c, and the liner 2d is connected by bolts 3 and nuts 4.

[Other Embodiments] In the above embodiment, a plate-shaped brace material 1 is shown. However, the present invention is also applicable to a material having various brace materials 1 such as H-shaped or I-shaped in cross section. Can be applied.
In the above-described embodiment, the recess is formed in each of the two precast concrete members 2A. However, as shown in FIG. 8, the recess is formed in only one precast concrete member 2A and the other precast concrete member 2A.
May be configured as a flat plate.

In the above embodiment, the bolts 3 connecting the precast concrete members 2A are provided so as not to penetrate the brace material 1. However, as shown in FIG. May be provided. In this case, in order to prevent a shearing force from acting on the precast concrete member 2A from the brace material 1, the bolt insertion hole 1a of the brace material 1 is inserted into the bolt 3 in the axial direction.
Is preferably formed in a loose hole sufficiently larger than the diameter of the hole.

In the above embodiment, the brace material 1 was fixed to the beam B by welding. However, as shown in FIGS. 10A and 10B, a seat 5 was formed on the beam B side, and a bolt was -The nut 6 may be tightened and fixed. (A) shows the bolts and nuts 6 arranged in one row, and (B) shows the bolts and nuts 6 arranged in two rows.

As shown in FIG. 11, both the brace material 1 and the precast concrete member 2A are formed in an X-shape to form an X-shaped brace BR. In this case, FIG.
As shown in (a) and (b), between the side end surface of the brace material 1 and the side end surface of the precast concrete member 2A,
Forming a gap (flexibility) allowing deformation of the brace material 1;
Although a buffer material SH such as a sponge is arranged in the gap, the buffer material SH may not be provided. (A) is a longitudinal sectional front view, and (B) is a transverse sectional view. In the figure, the cushioning material SH is arranged on the entire circumference of the brace material 1, but the gap and the cushioning material SH may be arranged between the side end surfaces.

[0021] Per To what movably precast concrete member 2A with respect to the brace member 1 in the above embodiments, be implemented such as grease to reduce the resistance of both the relative movement is interposed between them good.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a front view showing a use state of a first embodiment.

FIG. 2 is a sectional view taken along line aa in FIG.

FIG. 3 is an enlarged front view of a main part showing the first embodiment;

FIG. 4 is a sectional view taken along line bb in FIG. 3;

FIG. 5 is an enlarged front view of a main part showing the second embodiment.

FIG. 6 is a sectional view taken along line cc in FIG. 5;

FIG. 7 is a sectional view taken along line dd in FIG. 5;

FIG. 8 is a cross-sectional view showing another embodiment.

FIG. 9 is a longitudinal sectional view of a main part showing another embodiment.

FIG. 10 is a longitudinal sectional view of a main part showing another embodiment.

FIG. 11 is a front view showing another embodiment.

FIG. 12 is a cross-sectional view showing a main part structure of another embodiment.

[Explanation of symbols]

 1 Brace material 2 Concrete part 2A Precast concrete member 3 Bolt 4 Nut

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kazuhiro Inoue 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Main Store (56) References JP-A-4-31540 (JP, A) 56-8768 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 1/24 E04B 1/58 E04H 9/02 311 E04C 3/00-3/46

Claims (3)

(57) [Claims] 1. A composite brace comprising a metal brace material (1) and a stiffening concrete part (2) for preventing buckling of the metal brace material (1). In order to constitute the second embodiment, a plurality of precast concrete members (2A) are arranged around the brace material (1), and the precast concrete members (2A) are sandwiched between the brace materials (1) in the thickness direction.
Rutotomoni while holding the position to attach saw provided with attachment means for attaching to said brace member (1), said Purekyasu
Concrete member (2A) to the brace material (1)
A composite brace that can be moved freely . 2. A bolt (3) and a nut for connecting two precast concrete members (2A) positioned so as to sandwich the brace material (1) from its thickness direction to constitute the mounting means. The composite brace according to claim 1, wherein (4) is provided. 3. A method of manufacturing a composite brace, comprising a stiffening concrete part (2) for preventing buckling of a metal brace material (1) around the metal brace material (1). A plurality of precast concrete members (2A) are arranged around the brace material (1), and the precast concrete members (2A ) are thickened with the brace material (1).
In a state held in the pinched from direction position, and, prior to
A method of manufacturing a composite brace attached to the brace material (1) in a state where the composite brace is movable with respect to the brace material (1) .