JPH02232439A - Building construction composed of reinforced concrete-made earthquakeproof wall and steel beam - Google Patents

Abstract

PURPOSE:To lighten a frame, to facilitate execution and to obtain an earthquakeproof wall rational on structure and excellent in profitability by directly burying and fixing the end section of a steel beam into the reinforced concrete-made earthquakeproof wall and unifying both the earthquakeproof wall and the steel beam. CONSTITUTION:The end sections 2a of steel beams 2 are buried and fixed into a reinforced concrete-made earthquakeproof wall 1, and both the earthquakeproof wall 1 and the steel beams 2 are unified. Lightening and the framing of a large span are enabled while the steel beam 2 in low draft can be used. Accordingly, the cost of construction can be economized because no steel pole is required, and the allowable error of length in the member length direction is increased because the end sections 2a of the steel beams are buried into the earthquakeproof wall 1, thus facilitating manufacture.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a reinforced concrete shear wall, or an architectural structure consisting of a reinforced concrete shear wall including columns and beams, and a steel frame.

(Prior Art) Conventionally, beams that connect to reinforced concrete shear walls have been made of reinforced concrete walls.

In addition, if the beams connecting to the shear wall were of steel frame construction, the shear wall was constructed of steel reinforced concrete.

(Problems to be Solved by the Invention) In the former case, the beam is made of reinforced concrete, so the dead weight is large, and in the case of a long span, the beam thickness becomes large and the building dead weight increases.

In the latter case, many processing steps and construction management are required to ensure the structural performance of the joints between the steel beams and the steel beams and steel columns inside the shear wall, as well as construction accuracy, which increases construction costs. The present invention has been devised in view of the problems of the above-mentioned prior art, and the structure is made lighter and construction is easier.
The aim is to promote architectural structures with shear walls that are structurally rational and economically efficient.

(Means for Solving the Problems) In order to achieve the above object, the architectural structure according to the present invention has the following features:
The ends of the steel beams are directly buried within the reinforced concrete earthquake-resistant walls, and the two are integrated.

(Function) According to the present invention, as described above, by using a steel beam as the beam that connects to the reinforced concrete seismic wall, the weight can be reduced, and a large-span frame can be constructed.

In addition, the boundary between the beams that connect to the shear wall is an area where stress is concentrated, but because the beam is made of steel beams, it has superior plastic deformation ability compared to reinforced concrete beams, and is integrated with the shear wall. It forms a tough structure.

(Example) The present invention will be explained below with reference to the illustrated example. In Figures 1 and 2, (1) is a reinforced concrete shear wall, and the ends of steel beams (2) are buried and fixed in the shear wall (1), and the steel beams (2) and the seismic It is integrated with the wall (1). (3) in the figure is the floor slab.

Figure 3 is a plan view showing the frame of a building consisting of the steel frame (2) and the reinforced concrete shear wall (1).
) is the girder, (5) is the girder, and (6) is the floor.

As described above, in the illustrated embodiment, the beams that connect the reinforced concrete shear walls (1) are made of steel frames (2), so that the weight is reduced and a large-span frame structure is possible. Moreover, a steel beam (2) with a low degree of processing can be used, and a steel column is not required, so that the construction cost can be reduced by lifI. In addition, since the ends of the steel beams (2) are buried within the Chu-shakibei, the tolerance for length in the direction of the village head can be increased.
Manufacturing becomes easier.

Furthermore, the boundary between the beams that connect to the seismic wall is a place where stress concentration occurs, but it is important to note that the beams are made of steel! 9 (2), it has superior plastic deformation ability compared to reinforced concrete beams, and can be integrated with earthquake-resistant walls to form a tough cross section of a building.

FIGS. 4 and 5 show an embodiment of the buried attachment part of the steel beam (2) to the reinforced concrete shear wall 1),
Anchored end (2) of steel beam (2) composed of IJ type prepared lumber
Attach the bent reinforcing bar (7) to the lower flange in a).
At the same time, the upper end reinforcing bars (8) and lower end reinforcing bars (9) located under the upper and lower flanges are equipped with high-strength spiral reinforcements made of prestressed steel (0ω) or basket-shaped reinforcements made of ribs. It is configured to be surrounded by the fixed end portion (2a), and integrates the steel wire (2) with the reinforced concrete shear wall (+) via the cage-shaped reinforcement and the bent reinforcing steel (7). It is.

Fig. 6 shows another embodiment of the buried attachment part of the steel beam (2), and when the steel beam (2) is planted with studs 01) in the upper F lunge at the constant @ end (2a), Both surround muscle sviralis muscle 021. FIG. 7 shows another embodiment of the buried lower end of the steel beam (2), and there are no connecting holes in the web at the fixed end (2a) of the steel beam (2).
3) is drilled, and a connecting rod perpendicular to the web is inserted horizontally into the surface of the connecting hole.

FIGS. 8 and 9 show still another embodiment of the embedded end portion of the linkage beam (2) L2, the same steel frame? At the same time, a stud rule) is implanted in the upper and lower flanges at the fixing end of 8), and a spiral muscle Q is surrounded on each flange of 8, and the connecting hole side is bored in the web part, and the connecting hole 0 is ■ Muscles connected to O
A is inserted horizontally into two parts.

Fig. 10 and Fig. 1) show the present invention as a reinforced concrete column 0.
This shows the case where it is applied to a reinforced concrete shear wall (l') containing 0 and reinforced concrete aO, and a steel beam (2).
The end portion of the seismic wall (1') is embedded in the seismic wall (1').

(Effect of the invention) According to the present invention, as shown in L2 above, the ends of the steel beams are directly embedded in the reinforced concrete shear wall without using steel columns, and both are integrated. Therefore, by making all the beams that connect the earthquake-resistant walls to be of steel frame construction, the weight can be reduced and a large-span frame can be constructed. Also, as the steel beams mentioned in item 1 above, it is possible to use ones with a low degree of processing, and there is no need for steel columns for fixing the steel beams, so construction costs can be reduced. Furthermore, since the ends of the steel beams are buried within the earthquake-resistant walls, the tolerance for length in the direction of the village length can be increased, making manufacturing easier.

Furthermore, the boundary between the beams that connect to the shear wall is an area where stress is concentrated, but by making the beam a steel beam, it has superior plastic deformation ability compared to reinforced concrete beams, and can be integrated with the shear wall. It is possible to construct a frame with high toughness.

The invention according to claim 2 is characterized in that bending reinforcements are welded to the flanges of the steel beam at the fixed ends of the steel beams in the earthquake-resistant wall, and the bending reinforcements are welded between the vertical reinforcing bars and the respective reinforcing bars located above and below with the fixed ends sandwiched therebetween. By surrounding the fixed end of the steel beam with cage-shaped reinforcement consisting of auxiliary reinforcing bars placed over .

The invention according to claim 3 provides a structure in which the ends of the steel beams are integrally connected to the seismic wall by inserting connecting bars perpendicular to the anchoring end webs of the steel beams into the connecting holes drilled in the anchoring end webs of the steel beams. It is something that is embedded in the body.

[Brief explanation of the drawing]

Fig. 1 is a partial front view showing an embodiment of a building structure made of reinforced concrete shear walls and steel beams according to the present invention, Fig. 2 is a cross-sectional plan view thereof, and Fig. 3 is a framework of the building structure. FIGS. 4 and 5 are a plan view, a longitudinal sectional view and a longitudinal side view showing an example of the steel beam end fixing structure, and FIGS. FIGS. 8 and 9 are longitudinal sectional views showing still other embodiments of the fixing structure, and FIGS. Reinforced concrete including columns and beams
These are a partial longitudinal sectional view and a cross-sectional plan view showing an example applied to a reinforced concrete shear wall. End, (7) one bent reinforcing bar, (8) one upper end reinforcing bar, (9) - lower end reinforcing bar,
00)-spiral muscle, 03) one bond hole,
Lateral - connective muscle. Agent: Patent attorney Shige Okamoto (2 persons) Figure 1 Figure 8 Figure 3

Claims (3)

[Claims] (1) A building consisting of a reinforced concrete shear wall and a steel beam, characterized in that the end of the steel beam is directly buried and anchored within the reinforced concrete shear wall to form an integrated frame structure. structure. (2) The fixed end of the steel beam within the seismic wall is
In addition to welding bent reinforcing bars to the flanges of the steel beam, the anchored ends of the steel beams are shaped like baskets, consisting of upper and lower reinforcing bars located across the same end, and auxiliary reinforcing bars arranged between the respective reinforcing bars. An architectural structure comprising a reinforced concrete shear wall and a steel beam according to claim 1, which are surrounded by reinforcement. (3) The reinforced concrete according to claim 1, wherein the fixing portion of the steel beam in the seismic wall is constructed by inserting a connecting bar perpendicular to the web into a connecting hole drilled in the web of the steel beam. An architectural structure consisting of built-in shear walls and steel beams.