TW201739994A - Column-beam joint structure and steel reinforced concrete column - Google Patents

Abstract

The present invention provides a column-beam joint structure for jointing a steel column which is buried in a concrete to be casted, and a steel beam which is arranged at a side of the steel column. The column-beam joint structure includes a beam-mounting member which is provided on a side portion of the steel column to movably support the steel beam in a horizontal direction, and a fixing means which is provided on an upper surface of the steel beam to be fixed to the concrete. The fixing means is one or both of (1) a stud vertically provided on the upper surface of the steel beam, and (2) a dowel through hole formed at the upper surface of the steel beam.

Description

Column-beam joint structure and steel reinforced concrete column

The invention relates to a column beam joint structure and a steel reinforced concrete column. This case is based on the priority of 2016-071540, which was filed on March 31, 2016 in Japan. The content is hereby incorporated.

Conventionally, as a joint structure of a steel skeleton and an steel bone beam made of H-shaped steel used for a column made of SRC, a joint structure in which a load of a seismic load has been considered has been proposed.

For example, in Patent Document 1, as a column member made of steel or steel reinforced concrete, it is disclosed that the column-beam joint portion of the earthquake-resistant structure is made by using an H-shaped steel having a thickness larger than that of the blade. The required horizontal stiffeners and the slab reinforcements are not required for the column beam joints. However, the invention disclosed in Patent Document 1 is a technique in which the column beam joint portion is joined to the seismic force, and the upper and lower blades of the steel beam are welded to the steel plate. .

Further, Patent Document 2 discloses a column-and-colum joint structure which is attached to a column-and-beam joint structure of a steel reinforced concrete column and a steel bone beam, and can be newly joined to the column steel bone without using a partition plate. The way of the steel beam in the axial direction is such that the thickness of the web of the column steel is thicker than the thickness of the wing plate, and the steel beam beam of the weak axis of the column steel only joins the web to the column steel, and The buried length of the concrete of the steel beam to the column is set to be just the length of the steel beam. However, the invention disclosed in Patent Document 2 is also a technique for joining the column beam joints with respect to the seismic force, and joining the steel beam to the weak axis direction of the column steel. Further, the weak axis direction of the column steel is made larger by the cross-sectional shape of the column made of the SRC, and the buried length of the steel beam is large.

Further, in Patent Document 3, an outer casing structure is disclosed in which the beam end of the inner beam is welded to the core steel of the outer peripheral column and is just joined, and the web of the outer peripheral beam is not formed on the web of the core steel. The direct joint is performed, and the end portion of the outer peripheral beam is anchored to the covered concrete of the outer peripheral column and rigidly joined, and the shear reinforcing rib and the width retaining rib are densely concentrated to gather the reinforcement in the vicinity of the upper and lower sides of the outer peripheral beam. However, the invention disclosed in Patent Document 3 is also a technique for joining the column-beam joints in both directions to the seismic force, and the column made of the SRC is formed in a rectangular shape to ensure the buried length of the outer peripheral beam. [Advanced Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. 2001-100396 [Patent Document 3] JP-A-2013-245442 Problem solved]

On the other hand, in recent years, in the construction structure, the seismic load is burdened by the vibration-isolating mechanism provided outside the structural member such as the vibration-proof device or the earthquake-resistant bracing, and in such a building structure, it is not necessary to bear the seismic load by the structural member. That is, in a building structure having a vibration-isolating mechanism, the structural member can only consider the load in the vertical direction. However, any of the inventions disclosed in the above-mentioned Patent Documents 1 to 3 requires a joint structure in which the seismic load is reinforced, and does not support a structure exclusively applied to the load in the vertical direction of the beam. In particular, in the case where the joint load is applied to the joint between the column and the beam to compensate the seismic load, it is also difficult to use high-strength steel because the welding work becomes difficult when the high-strength steel material is used for the column or the beam. The problem of bone column or steel beam.

The present invention aims to provide a solution for solving such problems without requiring complicated reinforcement, excellent workability and safety, and a column-column joint structure and a steel-reinforced concrete column for a vertical load support. [Means to solve the problem]

The outline of the present invention is as follows.

(1) A first aspect of the present invention is a steel column for surrounding concrete, and a column-and-beam joint structure of a steel beam disposed on a side of the steel column, the column beam joint structure comprising: a beam a mounting member is provided on a side portion of the steel column, and supports the steel beam to be movable in a horizontal direction; and a locking mechanism is disposed on an upper surface of the steel beam to be locked to the concrete The locking mechanism is one or both of a stud bolt that is erected on the upper surface of the steel beam and a positioning pin through hole formed in the upper surface of the steel beam. (2) In the column-and-beam joint structure according to the above (1), the locking mechanism may be the stud bolt, and the enlarged diameter head may be formed on the upper end side of the stud bolt. (3) In the column-and-beam joint structure according to the above aspect (1), the locking mechanism may be the positioning pin through hole, and may further include a positioning pin reinforcing bar through which the positioning pin through hole is inserted. (4) In the column-and-column joint structure according to the above (3), the cross-sectional area S1 of the cross section perpendicular to the material axis direction of the locating pin steel bar may be perpendicular to the penetration direction of the locating pin through hole. The ratio S1/S2 of the sectional area S2 of the surface is 0.5 or more and 0.8 or less. (5) In the column-and-beam joint structure according to any one of the above (1) to (4), the steel column may have a fall strength of 400 MPa or more. (6) The column-and-beam joint structure according to any one of (1) to (5), wherein the steel column is an H-shaped steel, and an end surface of the steel beam is a web of the H-shaped steel. Set relative to each other. (7) The pillar-and-beam joint structure according to any one of the aspects of the present invention, wherein the beam mounting member is provided with a vertical surface that is attached to the side portion of the steel column, and An angle material of a horizontal plane extending from the upper end of the aforementioned vertical portion in the horizontal direction. (8) In the column-and-beam joint structure according to any one of the above (1) to (7), the end surface of the steel beam may be not fixed to the side portion of the steel column. (9) In the column-and-beam joint structure according to any one of the above (1) to (8), the steel beam and the steel column may not be joined by welding. (10) A second aspect of the present invention is a steel reinforced concrete column comprising: the column-and-beam joint structure according to any one of claims 1 to 9; and the periphery of the pillar-and-beam joint structure RC. [Effects of the Invention]

According to the above aspect of the invention, in the column-to-beam joint structure of the steel column and the steel beam used for the steel reinforced concrete column, the steel beam is supported by the beam mounting member so as to be movable in the horizontal direction. Therefore, since it is not directly joined to the steel column by welding or the like, the construction of the column-and-beam joint structure can be easily and quickly performed without complicated reinforcement. In particular, since the welding of the steel column and the steel beam is omitted, a high-strength column member which is difficult to weld can be used. Therefore, a columnar joint structure and a steel reinforced concrete column having high safety can be obtained. Furthermore, since at least one of the stud bolt and the positioning pin through hole is provided as a locking mechanism on the upper surface of the steel beam, the steel beam is prevented from moving toward the longitudinal direction of the steel beam after the concrete is hardened and hardened. . Therefore, since the steel beam is prevented from falling off from the steel reinforced concrete column, high safety can be ensured. Therefore, it is possible to provide a column beam joint structure and a steel reinforced concrete column which have both high workability and safety.

The present inventors have learned that (a) the relevant seismic load is a structure that is not burdened by the joint of the steel column and the steel beam, and that the steel column and the steel beam are not just joined by welding or the like, and b) a locking mechanism for preventing the longitudinal displacement of the steel beam after the concrete is installed on the upper surface of the steel beam, and providing a column-girder structure and steel reinforcement with excellent workability and safety Concrete column.

Hereinafter, the column-and-beam joint structure of the first to fourth embodiments of the present invention, which is completed based on the above findings, will be described with reference to the drawings. In the present specification and the drawings, elements having substantially the same functional configuration are denoted by the same reference numerals, and the description thereof will not be repeated. Further, the terms of the present specification will be described below. The strong axial direction X means a direction in which the secondary bending moment of the cross section becomes the largest in the cross section perpendicular to the material axis direction Z of the column. In the case where the column is an H-shaped steel, the direction in which the web extends in the section perpendicular to the material axis direction Z of the H-shaped steel is the strong axis direction. The weak axis direction Y means a direction in which the secondary bending moment of the cross section becomes the smallest in the cross section perpendicular to the material axis direction Z of the column. In the case where the column is an H-shaped steel, the extending direction of the blade in the cross-section of the vertical material axis direction Z of the H-shaped steel is the weak axis direction.

(First Embodiment) Fig. 1 is a view showing a steel reinforced concrete column 10 (SRC structure) including a column-and-beam joint structure 1A in a first embodiment of the present invention. As shown in FIG. 1, the column-and-beam joint structure 1A is a structure for joining the steel skeleton 2 which is erected in the vertical direction Z, and the steel beam 3 which is disposed so that the end surface faces the side surface of the steel column 2. .

The steel skeleton 2 is composed of an H-shaped steel having a web 21 and a pair of wings 22. The steel beam 3 is composed of an H-shaped steel having a web 31 and a pair of upper and lower upper and lower blades 32a and 32b, and is disposed to extend along the weak axis direction Y of the steel column 2. That is, the steel beam 3 is disposed such that the end faces are opposed to the side portions of the web 21 of the steel column 2 . In the conventional technique for joining the welding of the column and the beam, the weldability is considered, and there is a material design limitation on the use of the high-strength steel. However, in the column-and-beam joint structure 1A of the present embodiment, welding for joining the columns and the beams is not performed. Therefore, for example, a high-strength steel material having a relief strength of 400 MPa or more, preferably 460 MPa or more can be used.

A horizontal reinforcing bar insertion hole 33 is formed in the web 31 of the steel beam 3. A vertical reinforcing bar 5a is disposed in parallel with the material axis direction of the steel column 2 around the steel column 2, and 5b is inserted into the vertical reinforcing bar 5a through the horizontal reinforcing bar insertion hole 33. Further, concrete C is placed around the steel column 2 so as to embed the vertical reinforcing bars 5a and the horizontal reinforcing bars 5b in the area indicated by the dotted line in Fig. 1 . In this manner, the steel skeleton 2 and the column-and-beam joint structure 1A are covered with reinforced concrete to construct the steel reinforced concrete column 10. As shown in Fig. 1, the steel skeleton 3' may be disposed on the side of the wing 22 of the steel column 2 in response to the installation position of the steel reinforced concrete column 10.

Further, although the steel reinforced concrete column 10 in this embodiment is a column having a slightly square cross section, it may be a column having a slightly rectangular cross section.

Fig. 2 is a view showing a column-and-beam joint structure 1A in the present embodiment, (a) is a plan view, (b) is a longitudinal sectional view seen from the line A1-A1 of (a), and (c) is from (a) A longitudinal section of the line B1-B1. As shown in FIGS. 2(b) and 2(c), the beam placing member 6 is joined to both side portions of the web 21 of the steel column 2 . The beam mounting member 6 is constituted by an angle member (angle steel) having a vertical surface 61 attached to the side surface of the web 21 of the steel column 2 and a horizontal surface 62 extending in the horizontal direction from the upper end of the vertical surface 61. In the column-and-beam joint structure 1A of the present embodiment, the bolt 63a is inserted through the hole penetrating the web 21 and the beam mounting member 6 provided on both side surfaces thereof, and is screwed to the nut 63b to make the beam The mounting member 6 is provided on the side surface of the steel column 2 . Then, on the upper surface of the horizontal surface 62 of the beam mounting member 6 thus provided, the lower blade 32b of the steel beam 3 is placed in a horizontally movable manner. Here, the state of being movable in the horizontal direction means that the steel beam 3 is in a state before the concrete C is hardened, and is not fixed to the steel column 2 or the beam mounting member 6 by welding or bolts, but may be The aspect in which the long side direction and the short side direction slide.

The size of the beam mounting member 6 can be supported until the concrete C to be laid is hardened, and the load can be supported during construction. Moreover, since the load acts on the vertical downward force when the steel beam 3 is constructed, the steel beam 3 can be placed on the beam mounting member 6. However, the steel beam 3 is attached to the steel column 2 for the correct positioning of the steel beam 3 or for the purpose of bearing the self-weight of the steel beam 3 or the like, which is generated near the lower wing 32b of the steel beam 3. The force in the direction of the web 21 (arrow f1 in FIG. 2(b)) may be formed by temporarily fixing the steel beam 3 and the vertical surface 61 of the beam mounting member 6 with a pressure bolt or the like. For example, the bolt hole having the play in the horizontal direction may be inserted into the pressure receiving bolt, and the steel bone beam 3 may be horizontally moved freely by fixing the pressure receiving bolt in a state where the torque does not enter.

On the other hand, in the vicinity of the wing plate 32a above the steel beam 3, the force in the direction away from the web 21 of the steel column 2 occurs by the bending moment acting on the steel beam 3 (Fig. 2 ( b) arrow f2). In order to prevent the deviation due to the force, in the column-and-colum joint structure 1A of the present embodiment, a plurality of studs 41 are provided on the upper surface of the upper plate 32a of the steel beam 3. The stud 41 is placed at the position where the concrete C is placed, and the steel beam 3 can be prevented by utilizing the shear reinforcing effect generated by the concrete C embedded in the steel reinforced concrete column 10 The position in the longitudinal direction is deviated. Therefore, even if the outer shape of the steel reinforced concrete column 10 is small, and the buried length of the steel reinforced concrete column 10 of the steel beam 3 is short, the deviation of the longitudinal direction of the steel beam 3 can be prevented, and The steel beam 3 is prevented from falling off from the steel reinforced concrete column 10.

As shown in Figs. 2(b) and 2(c), the stud bolt 41 has a trunk portion 41a and an enlarged diameter head portion 41b which is formed on the upper end side of the trunk portion 41a and which is larger than the body portion 41a. good. When such a stud bolt is used, since the locking force in the vertical direction also occurs, the above-described prevention effect of falling off can be further enhanced.

The stud bolt 41 may be provided before the installation of the clay C, and can be easily and quickly installed by using a stud welding gun.

In the column-and-colum joint structure 1A of the present embodiment, the welding between the web 21 of the steel column 2 and the end surface of the steel beam 3 which is resistant to the earthquake force as in the prior art is not performed ( Just joined). Therefore, the construction of the column-and-beam joint structure 1A can be performed in a short period of time in comparison with the case where the welding for the earthquake-resistant reinforcement is performed. Further, since high-strength steel can be used irrespective of welding between the column and the beam, for example, a steel material having a relief strength of 400 MPa or more, preferably 460 MPa or more. Therefore, the weight or size of the steel material necessary for the strength design can be reduced. Further, in the column-and-beam joint structure 1A of the present embodiment, since the steel beam 3 is placed on the upper surface of the beam mounting member 6 in a state of being movable in the horizontal direction, the steel skeleton can be easily performed. The alignment of the beam improves the construction.

Further, in the column-and-beam joint structure 1A of the present embodiment, the vertical load acting on the steel beam 3 is passed through the floor of the building or the weight of the steel beam 3, and is embedded in the steel reinforced concrete column. The bearing pressure of the lower wing 32b of the steel beam 3 of part of 10 is transmitted to the concrete C which is set to the column. In other words, the beam mounting member 6 on which the steel beam 3 is placed may be any load that can be supported until the concrete C is hardened. On the other hand, the stud bolt 41 for the locking mechanism prevents the steel beam 3 from being pulled out from the steel reinforced concrete column 10 by preventing the positional deviation of the steel beam 3 in the longitudinal direction. As a result, the complicated construction of the column-and-beam joint structure 1A can be easily and quickly performed without complicated reinforcement as is conventional. Since the steel column 2 and the steel beam 3 are not welded at a high joint strength such as a joint that can withstand an earthquake load, even if the strength is 400 MPa or more, the thickness is 460 MPa or more. H-shaped steels, such as H-beams, which are difficult to weld, can be easily used. Further, as the steel beam 3, a rolled H-beam made of steel or a H-section member can be assembled by welding.

Further, when the vibration-isolating mechanism is provided in the earthquake-stricken area, the vibration-isolating mechanism is not provided in the column-and-beam joint structure 1A but in the structural member of the building, and the pile-and-beam joint structure 1A does not burden the earthquake load.

Further, according to the column-and-colum joint structure 1A in the present embodiment, since the steel beam can be surely joined to the steel reinforced concrete column, even the concrete floor and the steel reinforced concrete column can be structurally separated. That is, it is not necessary to anchor the steel bars of the concrete slab to the steel reinforced concrete columns, and the concrete slabs of the concrete slabs and the steel reinforced concrete columns can be respectively provided with respective concretes, and the construction becomes easy.

The conventional column-and-beam joint structure proposed in the above-mentioned Patent Documents 1 to 3 is for the purpose of joining the steel skeleton and the steel beam which are formed by the seismic load SRC. On the other hand, in the column-and-beam joint structure 1A of the present embodiment, it is applied to reduce the seismic load acting on the structural member on the premise that the seismic load is not burdened by the vibration-isolating mechanism other than the structural member of the building. . Therefore, in the column-and-colum joint structure 1A of the present embodiment, a special structure for resisting the seismic load as in the prior art is not provided, and the steel beam is placed on the beam-mounted member mounted on the steel column. The anti-offset mechanism in the steel beam is constructed to be embedded in the concrete of the steel reinforced concrete column. Thereby, the vertical load generated by the self-weight of the steel beam is supported, or the vertical load applied to the steel beam from the floor of the building makes it possible to rationalize the pillar-joining structure 1A, and can be easily and quickly constructed.

(Second Embodiment) Fig. 3 is a view showing a column beam joint structure 1B in a second embodiment of the present invention. The stud joint structure 1B in this embodiment differs from the stud joint structure 1A in the above-described first embodiment in that the stud bolt 41 is used instead of the stud bolt 41 and the locating pin through hole 42 is used as the locking mechanism. That is, in the column-and-colum joint structure 1B of the present embodiment, as shown in Figs. 3(a), (b), and (c), the steel plate 32a is embedded in the steel plate 3a. The portion of the concrete C of the concrete column 10 is formed as a locking mechanism by forming a plurality of positioning pin through holes 42 penetrating the upper blade 32a in the thickness direction.

In the case of the column-and-beam joint structure 1B in the present embodiment, when the concrete C is placed, the periphery of the positioning pin through-holes 42 is buried in the concrete C, and the concrete C enters the positioning pin through-holes 42. Thereby, the dowel effect is exerted, that is, the effect of preventing the deviation by the shear force is exerted. Therefore, similarly to the column beam joint structure 1A in the first embodiment, the positional deviation of the steel beam 3 in the longitudinal direction can be prevented.

(Third Embodiment) Fig. 4 is a view showing a column-and-beam joint structure 1C in a third embodiment of the present invention. In the column-and-beam joint structure 1C of this embodiment, a plurality of positioning pin through holes 42 provided in the same manner as the column beam joint structure 1B in the second embodiment are inserted into the positioning pin reinforcing bars 43, and the positioning pin is made The upper side and the lower side of the reinforcing bar 43 protrude from the upper surface and the lower surface of the upper blade 32a.

In the case of the column-and-beam joint structure 1C in the present embodiment, since the shearing force reinforcing effect is generated by the locating pin steel bar 43 being embedded in the concrete C of the steel reinforced concrete column 10, the length direction of the steel beam 3 can be prevented. The position is deviated. Further, a part of the concrete C is also entered into the space between the inner circumferential surface of the positioning pin through hole 42 and the outer circumferential surface of the positioning pin reinforcing bar 43, that is, between the positioning pin through hole 42 and the positioning pin reinforcing bar 43. The positioning pin effect is exerted in the space generated by the gap. Therefore, by the composite effect of the shear reinforcing effect and the positioning pin effect, the positional deviation of the steel beam 3 in the longitudinal direction can be strongly prevented, and the steel beam 3 can be further prevented from falling off from the steel reinforced concrete column 10 .

Furthermore, the locating pin reinforcement 43 inserted into the locating pin through-hole 42 can increase the shear resistance of the mounted concrete C, so that it is compared to the second embodiment in which the locating pin rebar 43 is not inserted. The column beam joint structure 1B can reduce the number of the locating pin through holes 42. Therefore, even if the outer shape of the steel reinforced concrete column 10 is small and the buried length of the steel beam 3 toward the concrete C is small, the positional deviation of the longitudinal direction of the steel beam 3 can be prevented, and the steel beam 3 can be prevented. Pull out from the steel reinforced concrete column 10.

In order to obtain the composite effect more suitably, the ratio of the sectional area S1 of the cross section of the positioning pin reinforcing bar 43 perpendicular to the material axis direction and the sectional area S2 of the cross section perpendicular to the through direction of the positioning pin through hole 42 That is, it is preferable that the value of S1/S2 is 0.2 or more and 0.6 or less. The value of S1/S2 is 0.2 or less. Since the positioning pin is too thin and the bending behavior is dominant, there is a case where the reinforcing effect cannot be obtained. When the value of S1/S2 is 0.6 or more, the filling property of concrete may be deteriorated, and the workability may be poor, and voids may be generated in the positioning pin holes. Further, when S1/S2 is made small, in order to prevent the locating pin reinforcing bar 43 from falling off, it is also possible to use a locating pin reinforcing bar which is bent at the upper end side, or a U-shaped portion so as to straddle the adjacent hole. Locating the pin reinforcement.

(Fourth embodiment) Fig. 5 is a view showing a column-and-beam joint structure 1D in a fourth embodiment of the present invention. The column-and-beam joint structure 1D in the fourth embodiment engages the steel beam at a point along the strong axis direction X of the steel column 2 to join the steel beam 3 with the weak axis direction Y along the steel column 2 The beam joint structure 1A in the first embodiment of 3 differs.

In the column-and-beam joint structure 1D of the present embodiment, as shown in FIG. 5(b), the beam-mounted member 6 is on the respective side portions on the outer sides of the two flaps 22, 22 of the steel-frame 2 The bolt 63a and the nut 63b are fixed. In the example shown in FIG. 5, the stud bolt 41 is used as the locking mechanism in the same manner as the post-beam joint structure 1A in the first embodiment, but it may be combined with the second embodiment or the third embodiment. Similarly, the pillar-and-beam joint structures 1B and 1C use the positioning pin through-holes 42 or the locating pin bars 43, and a combination of these may be used.

However, in the column-and-beam joint structure 1D of the present embodiment, the side faces of the flaps 22 separated from the central axis of the steel column 2 are disposed so that the end faces of the steel beams 3 face each other. Therefore, the column-and-beam joint structure 1A in the first to third embodiments of the side portion of the web 21 of the steel column 2 is disposed in such a manner that the end faces of the steel beam 3 are opposed to each other. 1C, the buried length of the steel reinforced concrete column 10 having the steel beam 3 tends to be small. In particular, as in the column-and-beam joint structure 1A to 1D in the first to fourth embodiments, the steel reinforced concrete column 10 has a slightly square cross section, compared to the steel reinforced concrete column. In the case where the section having a long length in the longitudinal direction of the steel beam is slightly rectangular, the buried length of the steel reinforced concrete column 10 of the steel beam 3 is apt to become small. However, as the locking mechanism, by using the above-described stud bolt 41, the positioning pin through hole 42, the positioning pin reinforcing bar 43, and the like, since the deviation prevention in the longitudinal direction of the steel beam 3 can be sufficiently prevented, the steel beam can be prevented. 3 is detached from the steel reinforced concrete column 10.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above examples. It is to be understood that various changes and modifications may be made without departing from the scope of the invention.

For example, in the above-described first to fourth embodiments, the H-shaped steel is used as the steel column, but a square steel or an I-shaped steel may be used instead of the H-shaped steel. Further, in the first to fourth embodiments described above, although the H-shaped steel is used as the steel beam, the square steel or the I-shaped steel may be used instead of the H-shaped steel. In the second embodiment and the third embodiment, the shape of the cross section perpendicular to the penetration direction of the positioning pin through hole 42 is circular. However, the shape may be elliptical or polygonal. . Further, in the above-described first to fourth embodiments, the angle member is used as the beam mounting member, but it may be placed on the side of the steel column to mount the steel beam on the upper surface. The component can be used, or it can be a square steel. Further, in the first to fourth embodiments described above, the side portions of the steel column and the end portions of the steel beam are in surface contact (the joining by welding or bolting is not performed). The state is configured, but it is also possible to form a gap to the extent that it is not in contact. Further, the first embodiment to the fourth embodiment may be combined as appropriate. For example, the stud bolt and the positioning pin through hole may be alternately arranged. [Industry use possibility]

According to the present invention, it is possible to provide a column beam joint structure and a steel reinforced concrete column which have both high workability and safety.

1A‧‧‧column joint structure
1B‧‧‧column joint construction
1C‧‧‧column joint structure
1D‧‧‧column joint construction
2‧‧‧Steel column (H-beam)
3‧‧‧Steel beam (H-beam)
3'‧‧‧Steel Beam (H-beam)
5a‧‧‧Vertical steel bars
5b‧‧‧ horizontal reinforcement
6‧‧‧ Beam mounting members (angles)
10‧‧‧Steel reinforced concrete column
21‧‧‧ web
22‧‧‧ wing
31‧‧‧ web
32a‧‧‧Upper wing
32b‧‧‧lower wing
33‧‧‧Horizontal steel rod insertion holes
41‧‧‧ studs
41a‧‧‧body
41b‧‧‧Expanded head
42‧‧‧Locating pin through hole
43‧‧‧Locating pin steel bars
61‧‧‧Vertical
62‧‧‧ horizontal plane
63a‧‧‧Bolts
63b‧‧‧ nuts
C‧‧‧Concrete
F1‧‧‧ arrow
F2‧‧‧ arrow
X‧‧‧ strong axis direction
Y‧‧‧ weak axis direction
Z‧‧‧Product axis direction

Fig. 1 is a perspective view of a steel reinforced concrete column provided with a column beam joint structure in a first embodiment of the present invention. Fig. 2 is a view showing the pillar-and-pillar joint structure in the above embodiment, (a) is a plan view, (b) is a longitudinal section seen from the line A1-A1 of (a), and (c) is from (a) Longitudinal view seen on line B1-B1. Figure 3 is a view showing a column-and-pillar joint structure in a second embodiment of the present invention, wherein (a) is a plan view, (b) is a longitudinal sectional view taken from line A2-A2 of (a), and (c) is a (a) A longitudinal section of the line B2-B2. Figure 4 is a view showing a column-and-pillar joint structure in a third embodiment of the present invention, wherein (a) is a plan view, (b) is a longitudinal sectional view taken from line A3-A3 of (a), and (c) is a (a) A longitudinal section of the line B3-B3. Fig. 5 is a view showing a column-and-pillar joint structure in a fourth embodiment of the present invention, wherein (a) is a plan view, (b) is a longitudinal sectional view taken from line A4-A4 of (a), and (c) is a (a) A longitudinal section of the line B4-B4.

1A‧‧‧column joint structure

2‧‧‧Steel column

3‧‧‧Steel beam

3'‧‧‧Steel beam

5a‧‧‧Vertical steel bars

5b‧‧‧ horizontal reinforcement

10‧‧‧Steel reinforced concrete column

33‧‧‧Horizontal steel rod insertion holes

41‧‧‧ studs

C‧‧‧Concrete

X‧‧‧ strong axis direction

Y‧‧‧ weak axis direction

Z‧‧‧Product axis direction

Claims (10)

A column-and-beam joint structure is a column-and-beam joint structure of a steel skeleton which is provided with concrete around and a steel bone beam disposed on a side of the steel column, wherein the pillar-and-beam joint structure comprises: a beam a mounting member is provided on a side portion of the steel column, and supports the steel beam to be movable in a horizontal direction; and a locking mechanism is disposed on an upper surface of the steel beam to be locked to the concrete The locking mechanism is one or both of a stud bolt that is erected on the upper surface of the steel beam and a positioning pin through hole formed in the upper surface of the steel beam. The column beam joint structure of claim 1, wherein the aforementioned locking mechanism is the aforementioned stud bolt, and an enlarged diameter head is formed on an upper end side of the stud bolt. The column beam joint structure of claim 1, wherein the locking mechanism is the positioning pin through hole, and further comprises a positioning pin reinforcing bar through which the positioning pin through hole is inserted. The column-beam joint structure of claim 3, wherein the ratio S1 of the cross-sectional area S1 of the cross-section perpendicular to the material axis direction of the locating pin rebar and the cross-sectional area S2 of the cross-section perpendicular to the penetration direction of the locating pin through-hole /S2 is 0.5 or more and 0.8 or less. The column-and-beam joint structure according to any one of claims 1 to 4, wherein the aforementioned steel column has a relief strength of 400 MPa or more. The column-and-beam joint structure according to any one of claims 1 to 5, wherein the steel column is an H-shaped steel, and an end surface of the steel beam is disposed opposite to a web of the H-shaped steel. The column-and-beam joint structure according to any one of claims 1 to 6, wherein the beam-mounted member is provided with a vertical surface attached to the side portion of the steel column and extends in a horizontal direction from an upper end of the vertical portion Angled horizontal surface. The column-and-beam joint structure according to any one of claims 1 to 7, wherein the end surface of the aforementioned steel bone beam is not fixed to the aforementioned side portion of the aforementioned steel bone column. The column-and-beam joint structure of any one of claims 1 to 8, wherein the aforementioned steel bone beam and the aforementioned steel bone column are not joined by welding. A steel reinforced concrete column, characterized in that: the steel reinforced concrete column comprises: a column beam joint structure according to any one of claims 1 to 9; and a reinforced concrete disposed around the joint structure of the column beam .