JP2718744B2 - Architectural structure consisting of reinforced concrete shear walls and steel beams - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an architectural structure comprising a reinforced concrete shear wall, or a reinforced concrete shear wall including columns and beams, and a steel beam.

(Prior Art) Conventionally, a beam for a reinforced concrete earthquake-resistant wall has been constituted by a reinforced concrete beam.

In addition, when the beam to be attached to the earthquake-resistant wall was made of steel, the earthquake-resistant wall was made of steel-framed reinforced concrete.

(Problems to be Solved by the Invention) In the former case, the beam is made of reinforced concrete, so that its own weight is great.

In the latter case, many processing steps and construction management are required to secure the structural performance of the joint between the steel beam and the steel beam in the earthquake-resistant wall and the steel column and to secure the construction accuracy, and the construction cost increases.

The present invention has been proposed in view of the above-mentioned problems of the prior art, and is intended to reduce the weight of a frame, facilitate construction, and provide a building structure having an earthquake-resistant wall that is rational and economical in structure. The point is to provide.

(Means for Solving the Problems) In order to achieve the above object, a building structure according to the present invention is configured such that ends of steel beams are directly embedded and set in a reinforced concrete shear wall, and the two are integrated. Have been.

(Operation) According to the present invention, as described above, the beam for the reinforced concrete earthquake-resistant wall is made of a steel beam, so that the weight can be reduced and a large span frame can be provided.

In addition, the boundary part of the beam that is in contact with the earthquake-resistant wall is where stress concentrates.Because this beam is composed of steel beams, it has better plastic deformation capacity than reinforced concrete beams, and is integrated with the earthquake-resistant wall. To form a tough frame.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

In FIG. 1 and FIG. 2, (1) is a reinforced concrete earthquake-resistant wall, in which the end of a steel beam (2) is embedded and fixed within the earthquake-resistant wall (1), and the steel beam (2) and the earthquake-resistant wall are fixed. Wall (1)
And are integrated. (3) in the figure is a floor slab.

FIG. 3 is a plan view showing a frame of a building composed of the steel beam (2) and the reinforced concrete shear wall (1). In the figure, 4) is a girder beam, (5) is a small beam, and (6) is On the floor.

In the illustrated embodiment, as described above, since the beams to be joined by the reinforced concrete shear wall (1) are constituted by the steel beams (2), the weight can be reduced, and a frame with a large span can be realized. In addition, a steel beam (2) having a low workability can be used, and a steel column is not required, so that the construction cost can be reduced.
Further, since the end of the steel beam (2) is buried in the earthquake-resistant wall, the permissible error in the length in the material length direction can be increased, and the manufacture becomes easy.

Furthermore, the boundary portion of the beam that is in contact with the earthquake-resistant wall is a place where stress concentration occurs. However, since the beam is composed of a steel frame beam (2), the beam has excellent plastic deformation capacity as compared with a reinforced concrete beam, and It can be integrated with the wall to form a tough building frame.

FIG. 4 and FIG. 5 show an embodiment of the embedding setting portion of the steel beam (2) to the reinforced concrete shear wall (1). The anchoring end of the steel beam (2) made of H-shaped steel material ( 2a) Folded reinforcing bars (7) are welded to the upper and lower flanges, and high-strength spiral bars (10) made of PC steel or ribs are attached to the upper and lower reinforcing bars (8) and (9) located above and below the upper and lower flanges. A cage-like bar formed with reinforcing bars is surrounded by the anchoring end (2a), and the steel beam (2) is connected to the reinforced concrete structure via the cage-like bar and the bent reinforcing bar (7). It is integrated with the earthquake-resistant wall (1).

FIG. 6 shows another embodiment of the embedding and setting portion of the steel beam (2), in which a stud (11) is erected on the upper and lower flanges at the anchoring end (2a) and the spiral beam is spirally mounted. It surrounds the streaks (12).

FIG. 7 shows another embodiment of the buried setting end of the steel beam (2). A connection hole (13) is formed in the web at the anchoring end (2a) of the steel beam (2). A connecting bar (14) orthogonal to the web is horizontally inserted into the connecting hole (13).

FIG. 8 and FIG. 9 show still another embodiment of the embedded setting end of the steel beam (2), and studs (11) are implanted on upper and lower flanges at the anchoring end of the steel beam (2). At the same time, a spiral streak (12) is surrounded by each flange, and a connecting hole (13) is formed in the web portion, and a connecting streak (14) is horizontally inserted through the connecting hole (13). .

FIGS. 10 and 11 show the present invention using reinforced concrete columns (1
5) shows a case where the present invention is applied to a reinforced concrete shear wall (1 ') including a reinforced concrete beam (16), wherein an end portion of a steel beam (2) is embedded and set in the above-mentioned shear wall (1'). .

(Effects of the Invention) According to the present invention, as described above, an end of a steel beam is directly embedded and set in a reinforced concrete shear wall without using a steel column, and both are integrated. ,
In this way, by making all the beams to be attached to the earthquake-resistant wall to be made of steel, the weight can be reduced, and a frame with a large span can be realized. Further, as the steel beam, a low-working steel beam can be used, and a steel column for fixing the steel beam is not required, so that the construction cost is reduced. In addition, since the end of the steel beam is embedded in the earthquake-resistant wall, the permissible error in the length in the material length direction can be increased, and the manufacture becomes easy.

Furthermore, the boundary portion of the beam that is in contact with the above-mentioned earthquake-resistant wall is a portion where stress is concentrated. A tough frame can be constructed.

The invention according to claim 2 is that the fixing end of the steel beam in the earthquake-resistant wall is bent by welding a bending bar to a flange of the steel beam, and between the upper and lower rebars located above and below the fixing end and the respective reinforcing bars. By surrounding the anchoring end of the steel beam with a basket-shaped reinforcing bar composed of auxiliary reinforcing bars disposed over
The end of the steel beam is embedded and attached integrally to the earthquake-resistant wall.

According to a third aspect of the present invention, an end of the steel beam is integrated with the earthquake-resistant wall by inserting a connecting bar orthogonal to the web into a fixing hole formed in the anchoring end web of the steel beam. It is to be embedded and set in.

[Brief description of the drawings]

FIG. 1 is a partial front view showing an embodiment of a building structure comprising a reinforced concrete shear wall and a steel beam according to the present invention, FIG. 2 is a cross-sectional plan view thereof, and FIG. FIG. 4 is a plan view, FIG. 4 and FIG. 5 are longitudinal sectional views showing an embodiment of the end fixing structure of the steel beam, and FIG. 6 and FIG. 7 are other longitudinal sectional views, respectively. FIGS. 8 and 9 are longitudinal sectional views showing still another embodiment of the fixing structure, and FIG. 10 is a longitudinal sectional view showing a further embodiment of the fixing structure.
FIG. 11 is a partial longitudinal sectional view and a cross-sectional plan view showing an embodiment in which the present invention is applied to a reinforced concrete shear wall including columns and beams, respectively. (1) ... reinforced concrete shear wall, (2) ... steel beam,
(2a) ... anchored end of steel beam, (7) ... bent bar,
(8) ... upper reinforcing bar, (9) ... lower reinforcing bar, (10) spiral wire, (13) connecting hole, (14) connecting bar.

Claims (3)

(57) [Claims] 1. A reinforced concrete earthquake-resistant wall and a steel beam, wherein an end of a steel beam is directly buried and fixed in the reinforced concrete earthquake-resistant wall to constitute a frame in which both are integrated. Building structure. 2. An anchoring end of the steel beam in the earthquake-resistant wall is formed by welding a bent reinforcing bar to a flange of the steel beam and connecting the anchoring end of the steel beam with the upper and lower reinforcing bars located across the same end. The architectural structure comprising a reinforced concrete earthquake-resistant wall and a steel beam as claimed in claim 1, wherein the structural member is surrounded by a basket-shaped reinforcing bar comprising auxiliary reinforcing bars arranged between the reinforcing bars. 3. The steel beam anchoring portion in the earthquake-resistant wall is formed by inserting a connecting bar perpendicular to the web into a connection hole formed in a web of the steel beam. Building structure consisting of reinforced concrete shear walls and steel beams.