JPH0681418A - Structure composed of s column and rc flat slab and method of joining s column and rc flat slab - Google Patents

Abstract

PURPOSE:To join an S-column and an RC flat slab with good workability without loss of usability and functions of a building. CONSTITUTION:Steel receivers 12, 13 are welded for instance respectively at the upper and lower sides of conjunction position of a flat stab 14 at the outer periphery of an S-column. The upperside face of the lower receiver 12 at least is forced to get in contact with the lower side part of the slab 14 and the underside face of the upper receiver 13 at least is forced to get in contact with the upper side part of the slab 14. The peripheral face of the S-column 11 between the lower receiver 12 and the upper receiver 13 is forced to get in contact with the slab 14 to join the S-column 11 and the RC flat slab 14. In this way, asymmetrical moment and compression force generating in the flat slab in case of an earthquake can be securely transferred to the S-column through a receiving body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame composed of a steel-made (referred to as S in this specification) column and a flat slab made of reinforced concrete (referred to as RC in this specification), and an S-column and an RC flat slab. Regarding the joining method.

[0002]

2. Description of the Related Art A frame composed of S pillars and RC flat slabs cannot be fixed to the RC flat slab slab reinforcement on the S pillars, so there is no case where it is used as a ground structure, and the long-term vertical load is the main structure. There is an example used for. In this example, as shown in FIGS. 20 and 21, the column 1 of the underground structure is provided with reinforced concrete around the steel column 1a of the closed type cross section, and the steel frame reinforced concrete structure (SR in this specification is used).
C), RC capital 2 on this SRC pillar 1,
The RC support plate and the RC flat slab 4 are integrally connected, and the flat slab 4 is supported by the capital 2 and the support plate 3.

[0003]

The above-mentioned conventional technique is
In order to form the SRC pillar 1, it is necessary to perform a work requiring skill such as arranging a reinforcing bar and a formwork.
In order to form the capital 2, the RC support plate 3, and the RC flat slab 4, there is a drawback that a work requiring skill such as arranging a reinforcing bar and a mold is required. Moreover, if the structure of the frame used for this underground structure is to be applied to a ground structure that is subjected to antisymmetric repeated stress during an earthquake, capital and support plates will be provided above and below the RC flat slab. However, from the viewpoint of usability and functionality of the building, it is not possible to provide the capital and the supporting plate above and below the RC flat slab. The problem to be solved by the present invention is to provide a frame composed of an S pillar and an RC flat slab capable of joining the S pillar and the RC flat slab with good workability without impairing the usability and functionality of the building, and the S pillar. It is to provide a joining method with a flat RC slab.

[0004]

In order to solve the above problems, the present invention adopts the following constitution. The structure of the present invention has a structure in which a plurality of S pillars built in predetermined positions are RC
In a frame structure in which flat slabs are joined, steel receiving members are fixed by welding or the like to the lower portion and the upper portion of the outer peripheral portion of the S column where the flat slabs are joined, respectively. The upper surface contacts the lower part of the flat slab, the lower surface of the upper receiver contacts the upper part of the flat slab, and between the lower receiver and the upper receiver. The frame consists of an S column and an RC flat slab characterized in that the peripheral surface of the S column is in contact with the flat slab. In the preferred embodiment, the S-pillars are constructed of closed-section steel, but are not so limited. As a closed-section steel frame that constitutes the S pillar,
For example, a steel pipe or a square steel pipe is used. The size of the steel receiver is determined by structural analysis. The receiving body in the case of using the S column of the steel pipe is configured by, for example, a steel annular body, and the receiving body in the case of using the S column of the square steel pipe is configured by, for example, a steel rod-shaped body or a block-shaped body. . The shape of the cross section of the ring-shaped body, the rod-shaped body or the block-shaped body is, for example, a rectangle, a trapezoid, or the like, and is appropriately selected so that concrete can be easily filled and the S-pillar can be easily fixed. The receiving body is fixed to the S pillar by welding or the like at right angles to the longitudinal direction of the S pillar. When the receiving body is made of a steel plate, the receiving body is reinforced by rib pieces extending in the longitudinal direction of the S column, if necessary. It is preferable to fix the receiver to the S pillar at the stage of factory production of the S pillar. A reinforcing member such as an inner diaphragm or a stiffener may be provided inside the joining position of the RC flat slab of the S pillar made of steel frame having a closed cross section. When the S column is made of steel material having a closed mold section, concrete can be filled into the steel material having the closed mold section to strengthen the S pillar. The dimension between the lower surface of the lower receiving body and the upper surface of the upper receiving body is made to approximately match the thickness of the slab, or approximately the thickness of the slab, the supporting plate and the capital. The RC flat slab may be formed by casting in situ or by precasting.

When the RC flat slab is formed by casting in place, steel receiving members are fixed to the lower portion and the upper portion of the slab forming position of the S column by welding or the like, and
A pillar is built in a predetermined position, a slab formwork is arranged below the upper side surface of the lower receiving body fixed to the S pillar, and the receiving body is located below the S pillar at the slab forming point on the upper side of the slab formwork. Slab rebar is arranged between the upper receiving body and concrete is placed on the slab formwork so that at least the upper surface of the lower receiving body is embedded in the lower part of the flat slab, and at least the upper side. The lower surface of the receiving body is embedded in the upper portion of the flat slab, and the S column between the lower receiving body and the upper receiving body is embedded in the flat slab to form the S column and the RC flat slab. To join. When the RC flat slab is formed by precasting, steel receiving members are fixed to the lower part and the upper part of the slab joining position of the S pillar by welding, etc., and the opening for passing the S pillar through the precast flat slab is formed. A plurality of S pillars are provided at predetermined positions, and the flat slab is arranged so that the inner peripheral surface of the opening of the flat slab faces the peripheral surface of the S pillar at the slab joining position, and Filling the gap between the inner peripheral surface of the opening of the flat slab with a bonding material such as mortar, the lower surface of the bonding material such as filled mortar contacts at least the upper surface of the lower receiving body, Mortar filled with the upper surface of the filling material such as mortar filled in contact with at least the lower surface of the upper receiving body and the peripheral surface of the S column between the lower receiving body and the upper receiving body S-column and R Joining the flat slab. In a preferred embodiment,
For the bonding material such as mortar filling the gap, for example,
Using high strength mortar, the lower surface and upper surface of the filled high strength mortar are flush with the lower surface and upper surface of the RC flat slab. The opening of the precast RC flat slab is sized to easily accommodate the S-pillar with the receiver fixed to the outer peripheral surface thereof. As the shape of the opening, for example, an appropriate shape such as a circular shape, a quadrangular shape, an octagonal shape or the like in plan view is adopted corresponding to the cross-sectional shape of the S pillar. The lower and upper receivers are
Considering the usability of the building, the lower surface of the flat slab and the lower surface of the lower receiving body should be flush, and the upper surface of the flat slab should be flush with the upper surface of the upper receiving body. To place. However, when the lower and upper receivers are arranged so that the lower and upper receivers are completely embedded in the joining material such as concrete or mortar of the flat slab,
The fire resistance of the receiver is improved. In the flat slab, slab reinforcing bars are arranged vertically and horizontally in a plan view. Of the vertical and horizontal slab rebars, those that hit the S column may be cut into non-through bars or bent so that they do not hit the S column.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first embodiment is shown in FIGS.
This is an example in which a pillar 11 and an RC flat slab 14 cast in situ are joined to form a frame. The S pillar 11 is shown in FIGS.
As shown in Fig. 5, a steel pipe is cut into a predetermined length of about 2 to 3 times the height of the floor, and the outer periphery of the flat slab 14 is joined to the lower and upper portions of the flat slab 14 with an annular rectangular cross section made of steel. The receivers 12 and 13 of the
2 and 13 are fixed to a steel pipe by welding or the like. Receiver 12,
As shown in FIG. 7, normally, 13 is fixed to a position such that the lower surface of the receiving body 12 substantially coincides with the lower surface of the flat slab 14 and the upper surface of the receiving body 13 substantially coincides with the upper surface of the flat slab 14. However, as shown in FIG. 9, the receivers 12 and 13 are fixed at positions such that the upper surface of the receiver 12 coincides with the lower surface of the flat slab 14 and the lower surface of the receiver 13 coincides with the upper surface of the flat slab 14. You may. Receiver 12
The cross-sectional shape may be rectangular, but as shown in FIGS. 3 and 4, when the upper corner portion embedded in concrete on the outer periphery of the rectangular cross-section annular body is cut off to form the inclined surface 12a, a large stress occurs. It is possible to make the concrete portion facing the receiving body 12 on which the concrete acts, into solid concrete.
The same applies to the receiver 13.

Before or after the S pillar 11 is built,
Concrete S is filled in the S column 11 to form the filled concrete steel pipe column 10. A plurality of S pillars 11 are built in predetermined positions, and as shown in FIGS. 5 and 6, at the joining position of the flat slab 14 around the S pillars 11, the reinforcing bars 14 of the slab 14 are provided.
A and 14b are arranged vertically and horizontally. These rebars 14a, 1
Of the 4b, the reinforcing bars 14a ₁ and 14b ₁ corresponding to the S pillar 11 are non-through bars. The vertical and horizontal reinforcing bars 14a and 14b are arranged in two upper and lower layers, and if necessary, a plurality of reinforcing bars similar to the circularly bent reinforcing bar 14c shown in FIG. Reinforce the slab 14 around 11. Before arranging, the form 17a is arranged on the lower side of the reinforcing bars 14a and 14b of the slab 14. Form 17a is an appropriate support 1
Use 8 to support. Concrete C is cast on the upper side of the mold 17a to form the RC flat slab 14 as shown in FIG. The bottom surface of the slab 14 and the lower surface of the annular receiving body 12 fixed to the S pillar 11 are flush with each other, and the upper surface of the slab 14 and the upper surface of the annular receiving body 13 fixed to the S pillar 11 are flush with each other. To be In the frame composed of the filled concrete steel tube columns 10 and the RC flat slab 14, a moment M as shown in FIG. 8 is generated in the slab 14 at the time of an earthquake, and a compressive force CF is generated at the position as shown in FIG. Steel annular receiver 1 at the location where compressive force CF acts
Since there are 2 and 13, the moment M and the compression force CF
Can be reliably transmitted to the S pillar 11. It receives the diagonal compressive force in the concrete of the slab 14
2, 13 receives directly, and the reaction force of the pillar 1 is generated.

The second embodiment is shown in FIGS. 10 to 14, in which the S column 11 and the precast RC flat slab 14 are used.
This is an example of joining and forming a frame. As shown in FIGS. 10 and 11, the S column 11 is made by cutting a square steel pipe into a predetermined length that is about 2 to 3 times the floor height dimension, and the joining position of the precast flat slab 14 on the outer peripheral portion thereof. The rod-shaped receiving bodies 12 and 13 made of steel and having a rectangular cross section are arranged on each of the lower and upper sides, and these receiving bodies 12 and 13 are fixed to the square steel pipe by welding or the like. These receivers 12, 13
Are arranged at right angles to the longitudinal direction of the S column, and each receiving body 1
The upper and lower side surfaces of 2 and 13 are located on the same plane. In other words, in the receivers 12 and 13, as shown in FIG. 12, the lower surface of the receiver 12 substantially coincides with the lower surface of the precast flat slab 14, and the upper surface of the receiver 13 substantially coincides with the upper surface of the precast flat slab 14. Stick to the matching position. The S pillar 11 is filled with concrete C before or after it is built into the filled concrete steel tube pillar 10. The cross-sectional shape of the receivers 12 and 13 may be rectangular as shown in FIGS. 10 and 12, or may be a shape having an inclined surface as shown in FIGS. 3 and 4. As shown in FIG. 14, the precast RC flat slab 14 is formed with at least two openings 14d for receiving the S pillars 11, and the reinforcing bars 14a, 14 are arranged vertically and horizontally.
b is Haisuji, rebar 14a _1, 14b ₁ which corresponds to the opening 14d of the reinforcing bars 14a, 14b is in a non-through muscle.
Reinforcing bars 14a and 14b are formed in upper and lower two layers, and if necessary, below the upper reinforcing bar, etc., bent into an annular shape as shown in FIG.
A plurality of reinforcing bars similar to 4c are arranged to reinforce the flat slab 14 around the S pillar 11. The shape of the opening 14d may be a quadrangle or an octagon. As shown in FIGS. 12 and 13, a plurality of S pillars 11 built at predetermined positions are respectively housed in the openings 14d of the slab 14, and the lower surface of the receiving body 12 substantially coincides with the lower surface of the slab 14, The precast flat slab 14 is arranged so that the upper surface of 13 substantially coincides with the upper surface of the slab 14, and the flat slab 14 is supported at a predetermined position by using an appropriate supporting work. A gap A between the outer periphery of the S pillar 11 and the inner peripheral surface of the opening 14d of the slab 14
17b is arranged at the lower end of the mold, and the high-strength mortar 19 is filled in the gap A on the upper side of the mold 17b.
The lower and upper surfaces are flush with the lower and upper surfaces of the receiving bodies 12 and 13, and are flush with the lower and upper surfaces of the flat slab 14 so that the S pillar 11 and the precast The RC flat slab 14 is firmly joined.

The third embodiment is shown in FIGS. 15 to 16 and is an example in which the S column 11 is joined to the RC capital 15, the RC support plate 16 and the RC flat slab 14 to form a frame. The method of making the S pillar 11 is substantially the same as that in the first embodiment. As for the receiving bodies 12 and 13, the upper surface of the receiving body 12 is a capital 15
Of the flat slab 1
It is fixed to the S pillar 11 so as to substantially coincide with the upper surface of 4. S
Before or after building the pillar 11, the concrete C is filled into the S pillar 11 to fill the filled concrete steel pipe pillar 10
To Reinforcing bars 15a, 15b and 15c are arranged at the forming position of the capital 15 around the S pillar 11 built at a predetermined position, and reinforcing bars 15a and 15b are arranged at the forming position of the support plate 15 to form the flat slab 14 Reinforcing bars 14a, 14 at the forming position
Arrange b and 14c. Support plate 16 and flat slab 1
Among the reinforcing bars arranged in the vertical and horizontal directions of the reinforcing bar of _{No. 4} , the reinforcing bars 14a ₁ and 14b ₁ corresponding to the S column 11 are non-through bars. Reinforcing bars 14a and 14b of the flat slab are in two layers, upper and lower layers, and a plurality of circularly bent reinforcing bars 14c are arranged on the lower side of the upper reinforcing bar.
Reinforce the flat slab 14 around 1. Before arranging, the mold 17c is arranged around the reinforcing bars 15a, 15b of the capital 15, and the reinforcing bars 16a, 16 of the supporting plate 15 are arranged.
Form parts 17d, 17 on the lower side and the surrounding parts of b, 16c.
e is arranged, and the reinforcing bars 14a, 14 of the flat slab 14 are arranged.
The frame 17f is arranged in the lower part of b and 14c. Then, concrete C is placed inside and above the molds 17c, 17d, 17e, 17f, and RC capital 15,
The RC support plate 16 and the RC flat slab 14 are integrally formed. Then, the bottom surface of the capital 15 contacts the upper surface of the annular receiving body 12 fixed to the S pillar 11, and the upper surface of the flat slab 15 substantially matches the upper surface of the annular receiving body 13 fixed to the S pillar 11. .

The fourth embodiment is shown in FIGS. 17 to 18, and is an example in which the S column 11 having an inner diaphragm and an outer diaphragm is used. The S pillar 11 having the inner diaphragm and the outer diaphragm is manufactured, for example, as follows. A steel column with a long length by cutting a steel pipe slightly shorter than the floor height dimension minus the flat slab thickness dimension 1
1a and 11b are formed and the steel pipe is cut a little shorter than the thickness dimension of the flat slab to form a short pillar steel frame 11c.
The annular plates 12A and 13A serving as inner and outer diaphragms are formed by cutting a steel plate into an annular shape having an inner diameter smaller than the diameter of the steel pipe and an outer diameter larger than the diameter of the steel pipe. The lower surface of the annular plate 12A is welded by aligning the central axis with the upper end of the long pillar steel frame 11a,
Short pillar steel frame 1 with the central axis aligned with the upper surface of the annular plate 12A
1c is welded to the lower end, the upper end of the short pillar steel frame 11c is aligned with the central axis, and the lower surface of the annular plate 13A is welded.
The central axis is aligned with the upper surface of A and the lower end of the long column steel frame 11b is welded to form the S column 11. Annular plate 12A, 1
The annular portion of the 3A steel tube projecting inward is an inner diaphragm, the annular portion of the annular plates 12A, 13A projecting outward of the steel tube is an outer diaphragm, and the annular receiving bodies 12, 13 of the present invention are provided. Become. A plurality of rib pieces R are arranged in the longitudinal direction of the S pillar 11 at equal angular intervals around the upper short pillar steel frame 11c of the receiving body 12, and each rib piece R is arranged on the receiving body 12 and the pillar steel frame 11c. Weld. A plurality of rib pieces R are arranged in the longitudinal direction of the S pillar 11 at equal angular intervals around the lower pillar steel frame 11c of the receiving body 13, and each rib piece R is attached to the receiving body 13 and the pillar steel frame 11c. Weld, S pillar 1
Complete 1.

[0011]

The present invention has the following effects (a) to (h) by having the structure described in the section of the claims. (A) According to claim 1, the lower receiving body fixed to the outer peripheral portion of the S pillar supports the flat slab, and the lower and upper receiving bodies fixed to the outer peripheral portion of the S pillar are subjected to an earthquake. Since the anti-symmetrical moment and the compressive force sometimes generated in the flat slab are transmitted to the S column, the S column and the flat slab can be reliably joined, and the workability of the joining work is also improved. (B) According to claim 2, RC capital, RC
Even in a frame structure in which the support plate and the RC flat slab are joined, the same operational effect as the above (a) can be obtained. (C) According to claim 3, since the lower surface of the lower receiving body and the upper surface of the upper receiving body do not project from the lower and upper surfaces of the flat slab, the lower and upper surfaces The receiving body of does not narrow the usable space of the building, and the usability of the building is improved. Further, since the S column having the closed mold cross section is filled with concrete, the S column is reinforced and the steel material can be saved. (D) According to the fourth aspect, the slab formwork is arranged below the upper side surface of the lower receiver fixed to the S pillar,
Since it is only necessary to dispose the slab rebar between the lower receiving body and the upper receiving body of the S column at the slab forming point on the upper side of the slab formwork, the reinforcing work becomes easy, and the S column and RC The workability of joining work with flat slabs is improved. (E) According to claim 5, the precast RC flat slab is precast so that the inner circumferential surface of the opening of the precast RC flat slab faces the outer circumferential surface of the S column at the slab joining position.
The S column and the RC flat slab can be joined simply by arranging the flat slab and filling the gap between the periphery of the S column and the inner peripheral surface of the opening of the RC flat slab with a bonding material such as mortar. , The workability of joining work is further improved. In addition, since RC flat slabs can be produced in factories and the like, the work on the site can be greatly reduced. (F) According to the sixth aspect, by filling the S column having the closed mold cross section with concrete, the S column is strengthened and it is useful for saving steel materials. (G) According to the seventh aspect, the receiving body can be made of a steel plate, which helps to save the steel material, and the presence of the rib pieces promotes the integration of the S pillar and the surrounding concrete. . (H) According to the present invention, it becomes possible to construct a ground frame composed of S pillars and RC flat slabs at low cost with good workability.

[Brief description of drawings]

FIG. 1 is a front view of a main part of an S pillar according to a first embodiment.

FIG. 2 is a plan view of a main portion of an S pillar according to the first embodiment, which is crossed.

FIG. 3 is a front view showing another cross-sectional shape of the receiving body.

FIG. 4 is a front view showing another cross-sectional shape of the receiving body.

5 is a front view of the relationship between the built-in S column of Example 1 and the reinforcing bar of the flat slab taken along the line AA in FIG.

FIG. 6 is a plan view crossing that shown in FIG.

FIG. 7 is a front view in which a main part of a frame structure including an S column and an RC flat slab of Example 1 is longitudinally cut.

FIG. 8 is a diagram showing a moment generated in the RC flat slab or the like of the frame of the first embodiment.

FIG. 9 is a schematic diagram showing shearing force and the like generated in the RC flat slab and the like of Example 1.

FIG. 10 is a front view of a main portion of an S pillar according to the second embodiment.

FIG. 11 is a plan view of a main portion of an S pillar according to the second embodiment, which is crossed.

FIG. 12 is a front view of the relationship between the built-in S column and the precast RC flat slab of Example 2 taken along the same line as the line AA in FIG. 6.

FIG. 13 is a plan view crossing that shown in FIG.

14 is a plan view of a precast RC flat slab of Example 2. FIG.

15 is a front view of the relationship between the built-in S column of Example 3 and the reinforcing bars of the RC flat slab taken along the same line as the line AA in FIG.

FIG. 16 is a plan view crossing that shown in FIG.

FIG. 17 is a front view of the main part of the S pillar of the fourth embodiment.

FIG. 18 is a plan view of the main portion of the S pillar according to the fourth embodiment, which is crossed.

FIG. 19 is a front view in which a main portion of an S pillar of Example 4 is longitudinally cut.

FIG. 20 is a front view showing a main part of a frame structure including a conventional pillar and a flat slab.

FIG. 21 is a plan view crossing that shown in FIG.

[Explanation of Codes] 10 Filled Concrete Steel Tubular Columns 11 S Columns 12 Receptors 13 Receptors 14 RC Flat Slabs 14a Vertical Reinforcing Bars 14b Horizontal Reinforcing Bars 14c Annular Reinforcing Bars 14d Openings 15 RC Capital 16 RC Support Plates 17a to 17f Formwork 18 Supporting Work 19 High-strength mortar A Gap C Concrete CF Compressive force M Moment R Rib piece

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Haruhiko Okamoto, No. 3-8, Mitsudori, Mihara-cho, Minamikawachi-gun, Osaka Prefecture, Osaka Branch, Technical Research Institute, Takenaka Corporation (72) Kazuo Murai Minamikawachi-gun, Osaka Prefecture Mihara-machi Lumber Dori 3-chome 1-8 Takenaka Corporation Technical Research Institute Osaka Branch (72) Inventor Motoyoshi Oshima 8-21 Ginza 8-chome, Chuo-ku, Tokyo Stock company Takenaka Corporation Tokyo Main Store (72 ) Kenji Takahashi 8-21-1, Ginza Ginza, Chuo-ku, Tokyo Incorporated Takenaka Corporation Tokyo Main Store (72) Inventor Tomoaki Ishikawa 8-21 Ginza, Chuo-ku, Tokyo Takenaka Corporation Tokyo Inside the main store

Claims (7)

[Claims] 1. In a frame structure in which RC flat slabs are joined to a plurality of S pillars built in predetermined positions, steel is formed on the lower portion and the upper portion of the outer peripheral portion of the S pillars, respectively. The made receiving body is fixed by welding etc.,
The upper surface of the lower receiving body contacts the lower portion of the flat slab, the lower surface of the upper receiving body contacts the upper portion of the flat slab, and the lower receiving body and the upper portion of the flat slab A frame composed of an S pillar and an RC flat slab, characterized in that the peripheral surface of the S pillar between the receiving body is in contact with the portion of the flat slab. 2. In a frame structure in which RC capitals, RC support plates and RC flat slabs are joined to a plurality of S pillars built in predetermined positions, the joint positions of the capitals, support plates and flat slabs on the outer periphery of the S pillars. Steel receivers are fixed to the lower and upper parts by welding etc., the upper surface of the lower receiver contacts the lower part of the capital, and the lower part of the upper receiver The surface of the S column is in contact with the upper portion of the flat slab, and the peripheral surface of the S pillar between the lower receiving member and the upper receiving member is in contact with the capital, support plate and flat slab portions. A frame consisting of the characteristic S pillar, RC capital, RC support plate and RC flat slab. 3. In a frame structure in which RC flat slabs are joined to a plurality of closed-section S pillars built at predetermined positions, the lower part and the upper part of the joining position of the flat slabs on the outer peripheral portion of the S pillars. A steel receiver is fixed to each part by welding etc., concrete is filled in the S pillar, and the lower receiver is embedded in the lower part of the flat slab,
The upper receiving body is embedded in the upper part of the flat slab, and the S pillar between the lower receiving body and the upper receiving body is embedded in the flat slab, and the lower surface of the lower receiving body is embedded. Of the flat slab so as not to project from the lower surface of the flat slab, and the upper surface of the upper receiving body does not project from the upper surface of the flat slab.
A frame composed of columns and RC flat slabs. 4. In a method of joining an S pillar and an RC flat slab, steel receivers are fixed to the lower part and the upper part of the slab forming position of the S pillar by welding or the like, respectively.
The slab formwork is arranged below the upper side surface of the lower receiving body fixed to the column, and the S of the slab forming place on the upper side of the slab formwork is arranged.
Place the slab rebar between the lower and upper receivers of the pillar, place concrete on the slab formwork, and place at least the upper surface of the lower receiver under the flat slab. Embedding in the side portion, at least the lower surface of the upper receiving body is embedded in the upper portion of the flat slab, and the S pillar between the lower receiving body and the upper receiving body is embedded in the flat slab. A method for joining an S pillar and an RC flat slab, which is characterized by 5. A method of joining an S column and an RC flat slab, wherein steel receivers are fixed to the lower portion and the upper portion of the S column joining position of the slab by welding or the like.
Pre-cast a flat slab with multiple openings through which the pillars are built, build multiple S pillars in place, and make the inner surface of the pre-cast flat slab openings face the peripheral surface of the S pillar at the slab joint position. , A precast flat slab is placed, and a bonding material such as mortar is filled in the gap between the periphery of the S pillar and the inner peripheral surface of the opening of the flat slab, and the lower surface of the filled bonding material such as mortar Contact at least the upper surface of the lower receiving body, the upper surface of the filling material such as mortar filled contacts at least the lower surface of the upper receiving body, and the lower receiving body and the upper A method for joining an S column and an RC flat slab, which comprises contacting a joining material such as mortar filled on the peripheral surface of the S column between the S column and the receiving body. 6. The method of joining an S column and an RC flat slab according to claim 4 or 5, wherein the S column is composed of a steel frame having a closed cross section, and the steel material having the closed cross section is filled with concrete. . 7. A steel receiving body is fixed to an S column having a closed cross section at right angles to the longitudinal direction of the S column, and the receiving body is reinforced by rib pieces extending in the longitudinal direction of the S column. The S pillar and RC according to any one of claims 4 to 6.
Joining method with flat slab.