JPH0444541A - Steel frame-reinforced concrete structure and building - Google Patents

Abstract

PURPOSE:To reduce the size of cross sections as well as obtain high bearing strength by a method in which in crossings and terminal parts, steel frames of columns and walls are buried and surrounded by spiral reinforcing bars, and their upsides are covered with metal netting. CONSTITUTION:Column steel frames 22 consisting of steel plates whose widths match with those of concrete slabs having a specific width are buried in the crossings of thick concrete slabs 37. Wall steel frames 26 consisting of steel plates whose width practically matches those of concrete slabs to be buried are buried in parallel with the steel frames 22 in the terminal portions of each concrete slab. In this case, the steel frames 22 and 26 are surrouned altogether by spiral steel bar nettings 35 and 36 and buried in concrete. Wall and column structures having excellent bearing strength, excellent bending strength, and high rigidity can thus be obtained.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to structural members and buildings made of steel-framed reinforced concrete. It relates to the structure of wall pillars and beams installed between the wall pillars.

[Prior Art] In a conventional steel reinforced concrete column, H-shaped steel is used as the steel frame 1, as shown in FIG.
Surrounded by stirrups 3 and buried in concrete body 4;
As shown in Fig. 20, an assembled steel frame 5 is used in which the web end of a T-section steel is welded to the midpoint of one side of the web of a 1-section steel, and the assembled steel frame 5 is surrounded by column main reinforcements 2 and stirrups 3. Embedded in concrete body 4; As shown in Fig. 21, an assembled steel frame 6 is used in which the ends of the T-shaped steel web are welded to the midpoints of both sides of the T-shaped steel web, and the assembled steel frame 6 is attached to the column main reinforcement. For example, in steel reinforced concrete beams, H-shaped steel is used as the steel frame 7, and the steel frame 7 is surrounded by the beam main reinforcement 8, as shown in Fig. 22. There is one that is surrounded by ribs 9 and buried in a concrete body 10.

[Problems to be Solved by the Invention] However, in order to obtain the required shear strength and bending strength in these conventional steel reinforced concrete columns and beams, the cross-sectional area of the square or rectangle must be large, and the main reinforcement of the column, the main reinforcement of the beam, and the band must be Because it is necessary to increase the diameter of reinforcing bars and ribs and use them in large numbers, there are certain restrictions on reducing costs by reducing the amount of steel and concrete used. In some cases, the beam shape protrudes far from the ceiling, or the pillars protrude far from the original wall surface, creating a large amount of idle space that cannot be ignored when installing furniture or equipment, and hindering the effective use of indoor space. This resulted in poor livability.

Since the beam cross section cannot be made unnecessarily small, there is a certain limit to the reduction in floor height by reducing the beam cross section height. It was difficult to plan.

In addition, in conventional steel-framed reinforced concrete columns and beams, the horizontally placed webs of the steel frames, the flanges protruding from the ends of the webs, and the intersecting reinforcing bars become elements that impede the flow and wraparound of fresh concrete when pouring. The filling properties of concrete are poor, and the adhesion of steel frames and reinforcing bars to concrete may not be achieved as designed.

Therefore, it is an object of the present invention to have high resistance to axial force, shear force, and bending moment, and to have high crack resistance, so that the cross-sectional dimensions can be reduced without adversely affecting the structural strength. , Reducing the amount of steel and concrete used: Eliminating protrusions from the ceiling and wall surfaces to improve the effective use of indoor space and livability; Designing more floors by lowering the floor height. to do;
Wall-column and beam-shaped steel reinforced concrete structural members with excellent earthquake resistance, which have good concrete filling properties due to the simplification and rational arrangement of steel cross sections and can enhance the adhesion between concrete and steel. Our goal is to provide steel-framed reinforced concrete buildings.

[Means for solving the problem] In the wall column-shaped steel reinforced concrete structural member of the present invention,
As shown in claim (1), a column steel frame is buried at the intersection of a plurality of intersecting thick plate concrete bodies, and a wall steel frame is buried parallel to the column steel frame at the end of each concrete body. .

This column steel frame is composed of a plurality of steel plate parts whose plate width direction substantially matches the plate width direction of a specific concrete body, and each wall steel frame is composed of a plurality of steel plate parts whose plate width direction is a plate of the concrete body to be buried. Constructed from a steel plate that substantially matches the width direction.

A spiral reinforcing bar surrounding the column steel frame, a spiral reinforcing bar surrounding the wall steel frame, and a wire mesh that encloses these spiral reinforcing bars all at once are buried in each concrete body.

Here, the column steel frame having multiple steel plate parts is made of angle iron or L
In addition to being composed of section steel consisting of two or more plate elements such as section steel, T section steel, Y section steel, cross section steel, etc., it also includes bending of steel plates, welding of steel plates, or a combination of bending and welding of steel plates. The method of manufacturing the steel plate is not particularly limited.In addition to the steel plate that is the constituent material of the steel frame, it may be a band-shaped steel plate that is smooth on both the front and back sides, or a band-shaped steel plate that has reinforcing ribs or uneven parts such as a striped steel plate. can also be used.

The angle between the multiple steel plate parts is not particularly limited to 90 degrees, but can be acute or obtuse angles such as 60 degrees or 120 degrees, and can be used at corners or doorways of buildings where wall pillars are installed. Corresponding to the intersection angle of the wall bodies in , various changes are made following changes in the arrangement angle between the plurality of concrete bodies.

The plate width direction of the steel plate part of the column steel frame substantially matches the plate width direction of the concrete body when the vertical plane with the axis of the steel plate part and the vertical plane with the corresponding axis of the concrete body are the same. In addition to cases where the axis of the steel plate part and the axis of the concrete body are in separate vertical planes, this also includes cases where both vertical planes are parallel and cases where both vertical planes intersect at some angle. I'm here.

Usually, the vertical plane with the axis of the wall steel frame is the same as the vertical plane with the axis of the corresponding steel plate part of the column steel frame, that is, the steel plate of the wall steel frame is on the extension line of the steel plate part of the column steel frame. be.

However, even if the axis of the steel plate and the axis of the steel plate portion are in separate vertical planes that are parallel or intersect with each other, there is no problem in practice as long as the interval between the two vertical planes or the angle of intersection is excessively wide.

In the beam-shaped steel reinforced concrete structural member of the present invention, as shown in claim (2), the beam steel frame is composed of steel plates arranged substantially vertically in the plate width direction, and the beam steel frame is surrounded by spiral reinforcing bars, The beam will be buried in a slab-shaped concrete body made of steel beams and spiral reinforcing bars.

Further, in the steel-framed reinforced concrete building of the present invention, as shown in claim (3), the wall pillars arranged at a part of the corner or partition of the building are 1. It is composed of a plurality of intersecting thick plate-shaped concrete bodies, and the column steel frame is buried at the intersection of the concrete bodies. Consists of a steel plate part. Each wall steel frame buried parallel to the column steel frame at the end of each concrete body is made of a steel plate whose plate width direction substantially coincides with the plate width direction of the concrete body to be buried.

The beam installed between adjacent wall pillars is constructed of a thick plate-shaped concrete body, and the beam steel frame embedded in the concrete body is composed of steel plates whose width direction is substantially vertical. The beam steel frame is fixed to one or both of the column steel frame and the wall steel frame.

The column steel frame, each wall steel frame, and beam steel frame are surrounded by individual helical reinforcing bars, and the helical reinforcing bars of the column steel frame and each wall reinforcing bar are encircled with wire mesh, and each concrete body of the wall column and beam is surrounded by wire mesh. The spiral reinforcing bars and wire mesh are buried as one piece.

Here, the wire mesh includes not only welded wire mesh but also expander metal. It is also possible to use a reinforcing bar grid instead of wire mesh. One or more wire meshes are used depending on the cross-sectional dimensions of the structural member.

[Example] The example shown in Fig. 1 and Fig. 2 is a wall material-shaped steel reinforced concrete structural member that has an L-shape in plan view, and the concrete body is cast integrally with one end intersecting at right angles. 20 and 21 have the same plate width and the same plate thickness. The column steel frame 22 is constructed by welding a wide steel plate 24 and a narrow steel plate 25 at right angles to both sides of a wide steel plate 23, and these welded parts are deviated from the center line of the steel plate 23 in the width direction. It is deviated to The steel plate 23 is arranged on a vertical plane passing through the thickness center line of the concrete body 21, and the steel plates 24 and 25 are arranged on a vertical plane passing through the plate thickness center line of the concrete body 20.

Wall steel frame 26 placed at the end of the concrete body 20
is composed of a steel plate wider than the steel plate 23, and this steel plate is arranged on a vertical plane passing through the thickness center line of the concrete body 20. That is, the steel plate of the wall steel frame 26 is the same as the column steel frame 2.
It is on the extension line of the corresponding steel plate part of No.2. The wall steel frame 27 arranged at the end of the concrete body 21 is made of a steel plate wider than the steel plate 23, and this steel plate is arranged in a vertical plane passing through the thickness center line of the concrete body 21, that is, The steel plate of the wall steel frame 27 is on an extension line of the corresponding steel plate part of the column steel frame 22.

In accordance with the usual method, the lower ends of the column steel frame 22 and the wall steel frames 26, 27 are fixed to the foundation concrete body of the building or the concrete body of the lower floor, or are protruded from the foundation concrete body or the lower floor concrete body. It is fixed to the rising part of the steel frame. Spiral reinforcing bars 28 surrounding the column steel frame 22
is formed into a circular coil shape, and the spiral reinforcing bars 29.30 surrounding the wall steel frame 26.27 are formed into a rectangular coil shape.

In this embodiment, a plurality of axial reinforcements 31 are used as means for positioning the spiral reinforcement, and the column steel frame 22, the wall steel frame 26.
The lower end of each axial reinforcement 31 arranged at appropriate intervals around the 27 is fixed to the foundation concrete body of the building or the concrete body of the lower floor according to a conventional method, or is attached to the foundation concrete body or the concrete body of the lower floor. It is joined to the reinforcing bars protruding from the body using lap joints, welded joints, etc.

The spiral reinforcing bars 28, 29, and 30 were bent into compressed circular coils or rectangular coils, inserted from above the axial reinforcements 31 built in as described above, and stretched to an appropriate pitch interval. After that, appropriate portions are bound to the axial reinforcements 31 using iron wire or the like and fixed at a predetermined position. If gas pressure welding or a special joint is used for the axial reinforcement 31 and there is a problem with inserting the spiral reinforcement 28°29.30, insert the spiral reinforcement from the wall column leg to the joint position at the joint of the axial reinforcement 31. After installing the joints of the axial reinforcements 31, insert the spiral reinforcements from the joints to the wall pillars, and provide the joints of the spiral reinforcements at the joint positions of the axial reinforcements.

Concrete body 20.2 of each spiral reinforcing bar 28.29.30
The terminal fixation to 1 is carried out by the hook part 2 that engages with the axial muscle 31.
8a, 29a, and 30a, and a plurality of spiral reinforcing bars may be joined together by lap joints or the like as necessary. The form of the helical reinforcing bars is not limited to the above-mentioned ones, and the helical reinforcing bars 28 for the column steel frames 22 may be formed into a rectangular coil shape or an elliptical coil shape, and the helical reinforcing bars 29 for the wall steel frames 26 and 27 may be formed into a rectangular coil shape or an elliptical coil shape.
．． 30 can also be formed into a circular coil shape or an elliptical coil shape.

The wire mesh for preventing cracks includes a wire mesh 32 bent into a U-shape in plan view, attached to three sides of the spiral reinforcing bar 29, and tied and fixed at a predetermined position, and a wire mesh 30 bent into a U-shape in plan view and attached to three sides of the helical reinforcing bar 29. A wire mesh 33 is attached to the three sides of the wire mesh 33 and tied and fixed in a predetermined position, and each end is bent into a cross-shaped shape in plan view and attached to one of the parallel sides of the wire mesh 32 and one of the parallel sides of the wire mesh 33. a wire mesh 34 that is in contact with the wire mesh 34 and tied and fixed at a predetermined position;
Four pieces of wire mesh 35 are used in combination, each end of which is bent into a letter shape in plan view, attached to the other parallel side of wire mesh 32 and the other parallel side of wire mesh 33, and tied and fixed at a predetermined position. ing. The helical reinforcing bars 28 are arranged at the bends of the L-shaped wire mesh 34,35.

The object of binding the wire mesh 32 and 33 with iron wire etc. is the spiral reinforcing bar 2
9.30, but can also be tied to the axial reinforcement 31. In addition, the wire mesh 34 and 35 are tied together using the wire mesh 32.
．． 33, but may be tied to the axial reinforcement 31.

In this way, the column steel frame 22 and wall steel frame 26, 27 are erected, and the spiral reinforcing bars 28, 29, 30 and wire mesh 32, 33 are installed.
, 34 and 35 are completed, a formwork surrounding them is assembled according to the usual method, fresh concrete is poured from the upper end opening of the formwork, and the inside of the formwork is poured using a suitable vibrator. The space is densely filled. After curing and hardening of the integrally molded concrete body 20.21, the formwork is removed to obtain a wall column-shaped structural member in which a column steel frame, a wall steel frame, a spiral reinforcing bar, and a wire mesh are embedded in predetermined positions.

Wire mesh 32, 33, 34, 35 when pouring fresh concrete
In order to prevent large deformation or displacement, install appropriate spacers or supporting members between the wire mesh and the column steel frame, wall steel frame, between the wire mesh and formwork, or between the wire meshes as necessary. The crack-preventing wire mesh can also be composed of a single wire mesh, unless the problem of workability in bending and installation is taken into consideration.

The embodiment shown in FIG.
The concrete bodies 20, 20 and 21 cross each other at right angles at one end. The column steel frame 22 is constructed by welding a wide steel plate 24 and a narrow steel plate 25 at right angles to both sides of a wide steel plate 23, and these welded parts are offset to one side with respect to the center line of the width of the steel plate 23. is in position,
The steel plate 23 is arranged on the thickness center line of each concrete body 20, and the steel plates 24 and 25 are arranged on the plate thickness center line of the concrete body 21.

Each wall steel frame 26.26 placed at the end of each concrete body 20 is made of a steel plate wider than the steel plate 23,
It is arranged on the plate thickness center line of each concrete body 20. Wall steel frame 2 placed at the end of the concrete body 21
7 is composed of a steel plate wider than the steel plate 23, and is arranged on the thickness center line of the concrete body 21. The wire mesh for preventing cracks in concrete consists of two U-shaped wire meshes 32 and 1.
It is composed of a connected body of two U-shaped wire meshes 33, two L-shaped wire meshes 34, and one flat wire mesh 36. Other configurations are first
This is similar to the embodiment shown in the figure.

The embodiment shown in FIG. 4 is a wall column-shaped steel frame reinforced concrete structural member that is cross-shaped in plan view.1. - each two concrete bodies 20.21 cast into the body intersect each other at right angles at one end; The column steel frame 22 has a steel plate 23 placed on the thickness center line of each concrete body 21, a steel plate 23 placed on the plate thickness center line of each concrete body 20, and a steel plate 23 placed on the plate width center line of the steel plate 23 on both sides of the steel plate 23. The width of these steel plates 24 and 25 is about half that of the steel plate 23.

Each wall steel frame 26 disposed at the end of each concrete body 20 is made of a steel plate having approximately the same width as the steel plate 23 and is disposed on the center line of the plate thickness of the concrete body 20. Each wall steel frame 27 placed at the end of each concrete body 21 is made of substantially the same steel plate as the steel plate 23 and is placed on the thickness center line of each concrete body 21 . The wire mesh for preventing cracks in concrete consists of two U-shaped wire meshes 32 and 2.
Two pieces of U-shaped wire mesh 33, two pieces of L-shaped wire mesh 34, and two pieces of L
It is constituted by a connected body with a letter-shaped wire mesh 35. The other configurations are similar to the embodiment shown in FIG.

The embodiment shown in FIG. 5 is a beam-shaped steel-frame reinforced concrete structural member, and the beam steel frame 38 buried along the plate thickness center line of the concrete body 37 is composed of a band-shaped steel plate, and is vertically oriented in the plate width direction. A plurality of axial reinforcements 40 are arranged around the beam steel frame 38 as positioning members for the spiral reinforcing bars 39. The spiral reinforcing bar 39 is bent into a compressed rectangular coil shape, and inserted into the beam steel frame 38 from one end before connecting the beam steel frame 38 to the column steel frame.
After fixing, it is stretched to have an appropriate pitch interval, and is tied to the axial reinforcement 40 with iron wire or the like and fixed at a predetermined position.

The end of the spiral reinforcing bar 39 is fixed to the concrete body 37 by a hook portion 39a that engages with the axial bar 40,
A plurality of helical reinforcing bars 39 are used by joining them together using a lap joint or the like, if necessary. The form of the helical reinforcing bar 39 is not limited to the above-described one, and may also be formed into a circular coil shape.

In this way, the beam steel frame 37 is installed, and the spiral reinforcing bar 3
9, axial reinforcement 40, and wire mesh 41, 42 are completed, the formwork for the beam is assembled according to the usual method, fresh concrete is poured from the upper opening of the form, and a suitable vibrator is placed. When used, the internal space of the formwork is densely filled. After curing and hardening of the concrete body 38, the formwork is removed to obtain a beam-shaped structural member in which a beam steel frame, axial reinforcing bars 40, spiral reinforcing bars 39, and wire meshes 41, 42 are embedded in predetermined positions.

Incidentally, one or more wire meshes for preventing cracks may be embedded around the spiral reinforcing bars 39 in the same manner as the wall pillar-shaped structural member described above.

The embodiment shown in FIGS. 6 and 7 uses the wall-column type steel reinforced concrete structural members shown in FIGS. 2, 3, and 4 and the beam type steel reinforced concrete structural members shown in FIG. In this case, the beam steel frame 38 of each beam-shaped structural member is attached to the wall steel frame 26, 27 of each wall-column-shaped structural member with the ventral surface near the end of the beam steel frame 38 of each beam-shaped structural member. is fixed to the wall steel frame, and the abdominal surface of the end portion of the beam steel frame 38 is fixed to a corresponding specific steel plate portion of the column steel frame 22, that is, the steel plate 23.
, 24 and 25, and is fixed to the column steel frame with a port nut 42.

As a result, the two adjacent wall pillar-shaped structural members and the two beam-shaped structural members rigidly connected to the upper and lower ends of these constitute a rigid frame structure, and the four beam-shaped structural members in the front, rear, left, and right are connected to each corner. It consists of a parallel cross structure with wall pillar-shaped structural members rigidly connected to the wall. The concrete bodies 20, 21, 37 of each wall-column-shaped structural member and beam-shaped structural member are cast integrally for each floor or for multiple floors simultaneously.

The column steel frames 22.22 on the lower and upper floors are connected by joint steel plates 43 and port nuts 44 attached to both the front and back sides of each steel plate, and the wall steel frames 26, 26 on the lower and upper floors are connected on both the front and back sides of each steel plate. Joint steel plate 45 and port nut 46 attached to
27.2 The wall steel frame of the lower and upper floors is fixed by
7 is fixed by a joint steel plate 47 and a port nut 48 attached to both the front and back sides. It should be noted that other fixing means such as rivets may be used in place of each port Φ nut.

Apart from the beam-shaped structural members at the upper and lower ends, no shear walls or load-bearing walls are installed between the wall-column-shaped structural members placed at the corners and boundaries of buildings, and non-load-bearing walls are used. Partition walls, walls with window frames, walls with door frames, etc. are installed.

The embodiment shown in Fig. 8 is a wall-column-shaped steel-frame reinforced concrete structural member with a cross-shaped shape in plan view.
The concrete bodies 20 and 21 intersect at an angle of 90 degrees. The column steel frame 22 is made of angle iron. The rest of the structure is the same as the embodiment shown in FIG.

The embodiment shown in Fig. 9 is a wall-column-shaped steel frame reinforced concrete structural member with a cross-shaped shape in plan view, and two parts are cast in one piece.
The concrete bodies 20, 21 intersect at an angle of 90 degrees. The column steel frame 22 is constructed by bending a band-shaped steel plate at right angles on the center line of the plate width. The rest of the structure is the same as the embodiment shown in FIG.

The embodiment shown in FIG. 10 is a wall-column-shaped steel frame reinforced concrete structural member that is F-shaped in plan view.

The two concrete bodies 20.21 poured into the body are 12
In the column steel frame 22, which is a 0-assembly steel frame material that intersects at an angle of 0 degrees, steel plates 23 and 24 intersect at an angle of 120 degrees, and steel plates 23 and 25 intersect at an angle of 60 degrees. .

The rest of the structure is almost the same as the embodiment shown in FIG.

The embodiment shown in Fig. 11 is a wall-column-shaped steel-frame reinforced concrete structural member that is F-shaped in plan view.
The concrete bodies 20, 21 intersect at an angle of 120 degrees. The column steel frame 22 is constructed by bending a steel plate at an angle of 120 degrees along the plate width center line. The rest of the structure is the same as the embodiment shown in FIG.

The embodiment shown in the diagram is a wall column-shaped steel frame reinforced concrete structural member that is T-shaped in plan view.

Two concrete bodies poured into the body 20.21 is 90
intersect at an angle of degrees. The column steel frame 22 is constructed by welding a steel plate 24 perpendicularly to the steel plate 23 on the center line of the plate width of the steel plate 23.

The rest of the structure is the same as the embodiment shown in FIG.

The embodiment shown in Fig. 13 is a wall column-shaped steel reinforced concrete structural member that is T-shaped in plan view.
The concrete bodies 20, 21 intersect at an angle of 90 degrees. The column steel frame 22 is made of T-shaped steel. The rest of the structure is the same as the embodiment shown in FIG.

The embodiment shown in Fig. 14 is a wall column-shaped steel reinforced concrete structural member that is rice-shaped in plan view.
The concrete bodies 20, 21 intersect at an angle of 120 degrees. The column steel frame 22 is constructed by welding a wide steel plate 24 and a narrow steel plate 25 to both sides of the steel plate 23 on the plate width center line, and the intersection angle between the steel plate 23 and the steel plate 24 is 12.
The intersection angle between the steel plates 23 and 25 is 60 degrees. The rest of the structure is the same as the embodiment shown in FIG.

The embodiment shown in FIG.
The concrete bodies 20, 21 intersect at an angle of 120 degrees. The column steel frame 22 is constructed by welding steel plates 24 on the width center line of the steel plates 23 at an intersection angle of 120 degrees. The rest of the structure is the same as the embodiment shown in FIG.

The embodiment shown in FIG.
The concrete bodies 20 and 21 intersect at an angle of 60 degrees. The column steel frame 22 is constructed by welding a wide steel plate 24 and a narrow steel plate 25 to both sides of a steel plate 23 that is bent at 120 degrees along the center line of the plate width. Two bent plate parts of steel plate 23 and steel plate 2
The intersection angle with 4 is 60 degrees. The rest of the structure is the same as the embodiment shown in FIG.

The embodiment shown in FIG. 17 is a wall column-shaped steel frame reinforced concrete structural member that is arrow-shaped in plan view.

Two concrete bodies 20 and one concrete body 21 placed on the body intersect at an angle of 60 degrees. The column steel frame 22 is composed of a steel plate 23 bent at 120 degrees along the center line of the plate width, and a steel plate 24 welded on the internal angle bisector of the steel plate 23. The rest of the structure is the same as the embodiment shown in FIG.

The embodiment shown in FIG. 18 is a wall column-shaped steel reinforced concrete structural member that is cross-shaped in plan view, and each of the two concrete bodies 20 and 21 cast in the body has a width of 90 mm on the center line of the plate width.
The column steel frames 22, which intersect with each other at angles of 1 to 30 degrees, are constructed of newly stamped cruciform steel. The other configurations are the same as those of the previous embodiment.

In the wall column-shaped structural member of claim (4), the beam-shaped structural member of claim (5), and the building of claim (6), the axial reinforcement 31
．． 40 to the column steel frame 22, wall steel frame 26゜27, beam steel frame 3
8, the spiral steel frames 28, 29, 30.
39 around each steel frame, the axial reinforcement 31.
By using 40 as a guide means and a spacing means, the helical reinforcing bars 28, 29, 30, 29 can be arranged more accurately and easily. That is, each of the axial reinforcements 31, 40 is only used as a positioning member, and the axial reinforcements may be omitted by replacing them with other suitable spacers or supporting members.

In addition, when the thickness, strength, and arrangement interval of these axial reinforcements 31.40 are set in the same way as the main reinforcement, wall soil reinforcement, and beam main reinforcement in conventional reinforced concrete structures, the axial reinforcement 31.40 is Since the steel acts as tension reinforcement and compression reinforcement, the bending strength and shear strength of each structural member and building will be further improved.

[Effects of the Invention] As described above, the wall column type steel reinforced concrete structural member of the present invention has a column steel frame buried at the intersection of a plurality of thick plate type concrete bodies, and a concrete body having a specific plate width direction. A wall steel frame is constructed of a plurality of steel plate sections that substantially match the width direction of the concrete body, and the wall steel frame is buried parallel to the column steel frame at the end of each concrete body. It is constructed of steel plates that substantially match the direction, and is embedded in a concrete body by enclosing each column steel frame and wall steel frame separately with spiral reinforcing wire mesh, and each spiral reinforcing bar serves as a shear reinforcement. On the other hand, the wire mesh also acts as a shear reinforcement and restrains the concrete inside the surrounding area, so the column steel frame and wall steel frame are double-layered with spiral reinforcing bars and wire mesh. Local buckling is restrained by the restraining action of , and a wall column-shaped structural member with excellent shear strength and bending strength and high rigidity is obtained.

In the beam-shaped steel reinforced concrete structural member of the present invention, the beam steel frame is composed of steel plates arranged substantially vertically in the plate width direction, the beam steel frame is surrounded by spiral reinforcing bars, and the beam steel frame and the spiral reinforcing bars are assembled into a thick plate-shaped concrete body. The spiral reinforcing bars act as shear reinforcement and restrain the concrete inside the surrounding area, while the wire mesh also acts as a shear reinforcement and restrains the concrete inside the surrounding area, so the beam steel is made of spiral reinforcement and wire mesh. Local buckling is restrained by the double restraining action of , and a beam-shaped structural member with excellent shear strength and bending strength and high rigidity can be obtained.

In addition, in the wall-column-shaped and beam-shaped steel reinforced concrete structural members of the present invention, the above-mentioned arrangement of the spiral reinforcing bars and wire mesh with respect to the column steel frame, wall steel frame, and beam steel frame allows the entire structural member to be It is possible to reduce the amount of concrete used by reducing the cross-sectional dimensions of the column, and the number of steel plates that make up the column steel frame is small, and each wall steel frame and beam steel frame are both made of one steel plate. The amount of steel materials can be rationally reduced, and the main reinforcements, wall reinforcements, and beam reinforcements that were often used to improve shear strength and bending strength can be completely omitted or most of them can be omitted. It is possible to reduce costs and weight per unit length.

Furthermore, in the wall-column-shaped and beam-shaped steel reinforced concrete structural members of the present invention, the wall steel frame, beam steel frame, and column steel frame are configured with one steel plate or at least two steel plate sections, thereby simplifying the structure. In addition, each steel plate of the column steel frame and the steel plate of the wall steel frame are arranged so that the plate width direction substantially matches the plate width direction of the corresponding concrete body, and the beam The steel frames are arranged with the plate width direction substantially vertical, and only spiral reinforcing bars are placed around the column steel frames, wall steel frames, and tension steel frames. Because it is not complicated, it has good filling properties when pouring fresh concrete, and the dense filling without voids strengthens the adhesion between column steel, wall steel, and beam steel and concrete, and improves the adhesion of structural members. Each proof strength can be increased.

Furthermore, in the wall column type steel reinforced concrete member of the present invention, a wire mesh that collectively surrounds the column steel frame, wall steel frame, and each spiral reinforcing bar is embedded in the concrete body, and these wire meshes effectively act as a crack prevention material. In order to prevent the occurrence of diagonal cracks and extension into the interior of the member, we have a restraining effect on the swelling of the internal concrete of the spiral reinforcing bars due to spalling of the cover concrete, and a restraining effect on local buckling of the column steel frame, wall steel frame, and beam steel frame. is reduced, and the shear strength and bending strength are not lowered, and the necessary and sufficient plastic deformation ability is ensured, and a highly earthquake-resistant structural member with excellent tenacity and toughness can be obtained.

In the steel-framed reinforced concrete building of the present invention, the beam steel frame of the beam-shaped structural member is fixed to one or both of the column steel frame and the wall steel frame of the wall-column-shaped structural member to constitute a basic frame, and the column steel frame and Each spiral reinforcing bar that individually surrounded each wall steel frame and beam steel frame was further encased in a wire mesh and buried in the concrete body, resulting in a structure that combines the advantages of the rigid frame structure of conventional reinforced concrete buildings and wall structure. As a result, a building with high tenacity and high retention strength can be obtained.

Furthermore, in the steel-framed reinforced concrete building of the present invention, a well-balanced frame is created by combining the wall-column-shaped structural members and beam-shaped structural members, and it is possible to reduce the wall-column and beam cross-sections while ensuring the required bearing capacity. What you can do and
It is sufficient to arrange wall pillar-shaped structural members on a plane at appropriate intervals like columns in a rigid frame structure, and there is no need to arrange other load-bearing walls, reducing the number of structural elements, which reduces construction costs. A significant reduction is possible.

Furthermore, in the steel-framed reinforced concrete building of the present invention, the cross section of the beam can be made small in this way, so the floor height can be set reasonably low if necessary, and more floors can be planned for buildings of the same height. Significant cost reductions can be achieved in housing.

Conventional column main reinforcement and beam main reinforcement are not required at all or can be omitted for the most part.
Since it is only necessary to insert the twisted reinforcing bars and place the wire mesh on the outside, the reinforcement work is greatly simplified and the construction period can be shortened.

In addition, in the present invention, there is no beam shape on the indoor wall, and the wall pillars and beams, which have a relatively small cross section, fit within the original wall thickness, so unevenness that causes idle space is eliminated. It is possible to create highly livable buildings that do not have walls or ceilings.

Furthermore, with the present invention, there is no difficulty in bridge construction, the cross sections of wall materials and beams can be unified on all floors, and the floor heights can be made uniform, so free planning from low to high rises allows Buildings can be constructed by advantageously applying various construction methods such as conventional construction methods and prefabricated construction methods.

[Brief explanation of the drawing]

FIG. 1 is a horizontal sectional view of a wall-column type steel reinforced concrete structural member according to an embodiment of the present invention, and FIG. 2 is a front view of the structural member before concrete is poured. FIG. 3 is a horizontal sectional view of a column-shaped steel reinforced concrete structural member according to another embodiment of the present invention. FIG. 4 is a horizontal sectional view of a wall column-shaped steel reinforced concrete structural member according to yet another embodiment of the present invention. FIG. 5 is a vertical sectional view of a beam-shaped steel reinforced concrete structural member according to another embodiment of the present invention. FIG. 6 is a front view of the main parts of a steel-framed reinforced concrete building according to still another embodiment of the present invention before concrete is poured, and FIG. 7 is a plan view of the main parts of the building before concrete is poured. , illustration of the axial reinforcement and wire mesh is omitted in both cases. FIG. 8 is a horizontal sectional view of a column-shaped steel reinforced concrete structural member according to another embodiment of the present invention. FIG. 9 is a horizontal sectional view of a wall column type steel frame reinforced concrete structural member according to yet another embodiment of the present invention, and FIG. 10 is a horizontal sectional view of a wall column type steel frame reinforced concrete structural member according to another embodiment of the present invention. FIG. 11, which is a sectional view, is a horizontal sectional view of a wall column-shaped steel reinforced concrete structural member according to still another embodiment of the present invention. FIG. 12 is a horizontal sectional view of a wall-column type steel-frame reinforced concrete structural member according to another embodiment of the present invention, and FIG. 13 is a horizontal sectional view of a wall-column-shaped steel-frame reinforced concrete structural member according to yet another embodiment of the present invention. FIG. FIG. 14 is a horizontal sectional view of a wall column type steel frame reinforced concrete structural member according to another embodiment of the present invention. FIG. 15 is a horizontal sectional view of a wall column-shaped steel reinforced concrete structural member according to still another embodiment of the present invention. FIG. 16 is a horizontal sectional view of a wall column type steel frame reinforced concrete structural member according to another embodiment of the present invention. FIG. 17 is a horizontal sectional view of a wall column type steel frame reinforced concrete structural member according to yet another embodiment of the present invention. FIG. FIG. 18 is a horizontal sectional view of a wall column-shaped steel reinforced concrete structural member according to another embodiment of the present invention. FIG. 19 is a horizontal sectional view of a conventional column-shaped steel reinforced concrete structural member. Figure $20 is a horizontal sectional view of another conventional column-shaped steel reinforced concrete structural member. FIG. 21 is a horizontal sectional view of yet another conventional columnar steel reinforced concrete structural member. FIG. 22 is a vertical sectional view of a conventional beam-shaped steel reinforced concrete structural member. 22... Wall steel frame, 23... Steel plate, 24... Steel plate, 25... Steel plate, 26... Wall steel frame, 27...
Wall steel frame, 28... spiral reinforcing bar, 29... spiral reinforcing bar,
3o... Spiral reinforcement, 31-... Axial reinforcement, 32...
Wire mesh, 33... Wire mesh, 34... Wire mesh, 35... Wire mesh, 36... Wire mesh, 37... Concrete body, 38
...Beam steel frame, 39...Spiral reinforcing bar, 40...Axial reinforcement, 41...Port/su), 42...Port/nut, 43...Joint steel plate, 44... Bolt donut, 45... Joint steel plate, 46... Port nut, 4
7... Joint steel plate, 48... Porto Natto patent issued.
People Nippon Steel Corporation

Claims (6)

[Claims] (1) A column steel frame is buried at the intersection of a plurality of intersecting thick plate-shaped concrete bodies, a wall steel frame is buried parallel to the column steel frame at the end of each concrete body, and the column steel frame is placed in the width of the plate. Consisting of a plurality of steel plate parts whose directions substantially match the plate width direction of one concrete body, each of which has a specified direction, each wall steel frame is constructed so that the plate width direction substantially coincides with the plate width direction of the concrete body to be buried. A wall pillar-shaped structure constructed of steel plates conforming to Steel reinforced concrete structural members. (2) A beam type in which the beam steel frame is composed of steel plates arranged substantially vertically in the plate width direction, the beam steel frame is surrounded by spiral reinforcing bars, and the beam steel frame and spiral reinforcing bars are embedded in a thick plate-shaped concrete body. steel reinforced concrete structural members. (3) Wall pillars placed at the corners of buildings, door boundaries, etc.
A plurality of column steel frames that are constructed of a plurality of intersecting thick plate-shaped concrete bodies and are buried at the intersections of the concrete bodies, each of which has a plate width direction that substantially matches the plate width direction of a specific concrete body. Each wall steel frame is constructed of steel plates and is buried parallel to the column steel frame at the end of each concrete body.
It is constructed of steel plates whose plate width direction substantially matches the plate width direction of the concrete body to be buried, and the beams to be constructed between adjacent wall pillars are constructed of thick plate-shaped concrete bodies, and The buried beam steel frame is composed of steel plates arranged substantially vertically in the plate width direction, and the beam steel frame is fixed to one or both of the column steel frame and wall steel frame, and the column steel frame and each wall steel frame are connected to each other. Then, the beam steel frame is surrounded by individual spiral reinforcing bars, the helical reinforcing bars of the column steel frame and the spiral reinforcing bars of each wall reinforcing bar are encircled with wire mesh, and the concrete bodies of the wall column and beam are cast together. A steel-framed reinforced concrete building made of buried spiral reinforcing bars and wire mesh. (4) A claim in which a plurality of axial reinforcements are arranged around the column steel frame and the wall steel frame, and each spiral reinforcement is provided outside the axial reinforcement (
The structural member described in 1). (5) The structural member according to claim (2), wherein a plurality of axial reinforcements are arranged around the beam steel frame, and the spiral reinforcement is provided outside the axial reinforcements. (6) Place multiple axial reinforcements around the column steel frame and wall steel frame, place each spiral reinforcement outside the axial reinforcement, and place multiple axial reinforcements around the beam steel frame. 3. The building according to claim 3, wherein the spiral reinforcement is provided outside the axial reinforcement.