JP2009185550A - Beam-column connection structure and construction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beam-column connection structure which facilitates manufacturing of connection portions of beams to a steel pipe column formed of a cylindrical steel pipe while ensuring structural performance, and can reduce a space extending from the column in one direction, and to provide a construction. <P>SOLUTION: The beam-column connection structure 100 connects between the erected steel pipe column 102 formed of the cylindrical steel pipe and the beams 110, and joints between the steel pipe column and the beams. The beam-column connection structure comprises: flat first plate members 120 which are connected to the steel pipe column in a manner enclosing the periphery of the same, and connected to the beam via at least one edge thereof; and flat second plate members 130 which are each arranged in a direction perpendicular to a plane of the first plate member, and each connected to the first plate member. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a column beam connection structure and a structure.

  2. Description of the Related Art A column beam connection structure for connecting a column and a beam of a steel structure such as a building includes one that uses a through diaphragm, an inner diaphragm, or an outer diaphragm. Among them, the column beam connection structure using the outer diaphragm can be configured without cutting the column to be erected at the junction with the beam, and the manufacturing man-hours for manufacturing are reduced, which contributes to cost reduction.

  Also, it is a steel structure having a steel pipe column made of a hollow steel pipe, and considering the case where concrete is filled in the column, if it is an outer diaphragm, there is no interfering substance in the column unlike a through diaphragm or an inner diaphragm Therefore, it is advantageous in construction.

  For example, Patent Documents 1 to 3 disclose a technique of a column beam joint structure using an outer diaphragm.

JP-A 63-255447 JP-A-11-241399 JP 2000-170250 A

  By the way, in the column standing on the outer periphery near the wall of the building, when the column beam connection structure uses a normal outer diaphragm, the outer diaphragm projects outside the building even though there is no beam connection. End up. Therefore, there is a problem that the position where the outer wall is attached is separated from the pillar. Therefore, there is a case where a stiffener joined perpendicularly to the outer diaphragm is provided in a portion facing the outer wall on the side where the beam is not joined, without the protruding portion of the outer diaphragm.

  The column beam connection structure having such a stiffener is disclosed in the above-mentioned Patent Documents 1 to 3 and the like regarding a cast steel structure or a combination of an outer diaphragm and a stiffener when a square steel pipe is used as a column. However, when a circular steel pipe is used as a column, there is a problem that it is difficult to process the outer diaphragm, weld the outer diaphragm and the stiffener, and weld the outer diaphragm and the column because the distance between the column and the stiffener is narrow. For this reason, it has been difficult to manufacture and construct a column beam joint structure having a stiffener when a circular steel pipe is used as a column. On the other hand, round steel pipes can be made thinner than square steel pipes, and when concrete-filled columns filled with concrete are used, deformation is less likely to occur when concrete is placed than square steel pipes. Have

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to easily manufacture a joint portion with a beam in a steel pipe column made of a circular steel pipe while ensuring structural performance. It is an object of the present invention to provide a new and improved column beam connection structure and structure capable of reducing the space in one side direction from the column.

  In order to solve the above-described problems, according to one aspect of the present invention, there is provided a steel pipe column and a beam-to-beam connection structure that are connected to a standing steel pipe column and a beam made of a circular steel pipe and join the steel pipe column and the beam. The first plate-like plate member joined to the steel pipe column so as to surround the outer periphery of the steel plate and joined to the beam at at least one end, and arranged in a direction perpendicular to the surface of the first plate-like member A column-beam joining structure is provided, comprising a flat plate-like second plate-like member joined to the first plate-like member.

  With this configuration, the column beam connection structure is a structure in which a steel pipe column and a beam are connected to each other by connecting to a standing steel pipe column and a beam made of a circular steel pipe, and the first plate-like member has an outer periphery of the steel pipe column. It is a flat plate-like member that is joined to the steel pipe column so as to surround it and is joined to the beam at at least one end, and the second plate-like member is arranged in a direction perpendicular to the surface of the first plate-like member. It is a flat member that is provided and joined to the first plate member. The first plate member is, for example, a diaphragm, and the second plate member is, for example, a stiffener.

  The steel pipe column and the first plate-like member may be welded and joined. The first plate-like member may have a notch cut out on the second plate-like member side. The second plate-like member may be disposed in contact with the steel pipe column.

  The steel pipe column and the first plate-like member may be welded and joined within a range excluding the notch. The steel pipe column and the first plate-like member may be welded and joined outside the range of 30 ° to 90 ° around the column axis of the steel pipe column facing the second plate-like member. The said notch part may be notched in the range of 30-90 degrees around the column axis of the steel pipe column in which the 1st plate-shaped member opposes the 2nd plate-shaped member.

  The steel pipe column and the first plate-like member may be welded and joined outside the range of 60 ° around the column axis of the steel pipe column facing the second plate-like member. The cutout portion may be cut out in a range of 60 ° around the column axis of the steel pipe column where the first plate-like member faces the second plate-like member.

  When the two second plate-like members are orthogonal to each other, a notch portion may be formed so that the first plate-like member is disposed at the corner. The said notch part may be notched in the range of 15 degrees-35 degrees toward the corner from the virtual orthogonal line which crosses the 2nd plate-shaped member and passes along the central axis of a steel pipe column.

  Two first plate members that are arranged in the column axis direction of the steel pipe column and support one beam at the top and bottom in the height direction of the beam, and one for each first plate member are joined 2 Two second plate-like members.

  Two first plate members that are arranged in the column axis direction of the steel pipe column and support one beam above and below in the height direction of the beam, and one first member that joins the two first plate members. 2 plate-like members.

  Moreover, in order to solve the said subject, according to another viewpoint of this invention, the standing steel pipe column which consists of circular steel pipes, the beam connected with a steel pipe column, and the column which joins a steel pipe column and a beam A beam connecting structure, the column beam connecting structure is joined to the steel pipe column so as to surround the outer periphery of the steel pipe column, and has a plate-like first plate-like member joined to the beam at at least one end; There is provided a structure including a flat plate-like second plate-like member disposed in a direction perpendicular to the surface of one plate-like member and joined to the first plate-like member.

  ADVANTAGE OF THE INVENTION According to this invention, the junction part with the beam in the steel pipe pillar which consists of a circular steel pipe can be manufactured easily, ensuring structural performance, and the space of the one side direction from a pillar can be reduced.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

(First embodiment)
First, the beam-column joint structure 100 according to the first embodiment of the present invention will be described. FIG. 1 is a cross-sectional view (A), a front view (B), and a side view (C) showing a column beam connection structure 100 according to the present embodiment. FIG. 1A is a cross-sectional view showing a state in which the steel beam column 102 is cut horizontally with respect to the axial direction and the column beam connection structure 100 is viewed from the upper part of the steel tube column 102. FIG. 1B is a front view showing a state in which the beam-column joint structure 100 is viewed from the front. FIG. 1C is a side view showing the column beam joint structure 100 as viewed from the front right side. FIG. 2 is a perspective view showing the beam-column joining structure 100 according to the present embodiment, and shows a state where the beam-column joining structure 100 is viewed from the front upper right.

  The column beam connection structure 100 is applied to, for example, a steel structure such as a building including a steel pipe column 102 and a beam 110 and is connected to the steel pipe column 102 and the beam 110 to join the steel tube column 102 and the beam 110. In addition, the column beam connection structure 100 of the present embodiment is provided in a place where one end side faces an outer wall or the like and the one end side is not connected to the beam 110. The column-beam joint structure 100 joins one steel pipe column 102 and three beams 110. As shown in FIGS. 1 and 2, the column-beam joint structure 100 includes a diaphragm 120 that joins the steel pipe column 102 and the beam 110, and a stiffener 130 that joins the diaphragm 120.

  The steel pipe pillar 102 joined to the column beam joint structure 100 is, for example, a hollow circular steel pipe, and is erected vertically as a pillar of the structure. The steel pipe column 102 may be used as a concrete-filled column with concrete filled therein. The steel pipe column 102 can be made thinner than a square steel pipe. When a concrete-filled column is used, the steel pipe column 102 is less likely to be deformed than a square steel pipe when the concrete is placed before the concrete is hardened.

  The beam 110 to be joined to the column beam joining structure 100 is, for example, H-shaped steel, and is arranged in the horizontal direction. As shown in FIGS. 1 and 2, the H-shaped steel beam 110 includes a flat plate web 112 and two flat plate flanges 114, and the two flanges 114 are installed in a vertical direction in the height direction. The The beam 110 is joined to the column-beam joint structure 100 at the end of the beam 110.

  Diaphragm 120 (first plate-like member) is a flat steel plate, and is a so-called outer diaphragm. The diaphragm 120 is disposed orthogonal to the column axis of the steel pipe column 102. The diaphragm 120 has a notch 120a cut out on the stiffener 130 side (side not joined to the beam 110 such as the outer wall side) when joined to the steel pipe column 102, and when the diaphragm 120 is viewed from above, C It has a shape. The notch 120 a is notched in the range of 60 ° around the column axis of the steel pipe column 102 where the diaphragm 120 faces the stiffener 130. The diaphragm 120 is joined to the steel pipe column 102 so as to surround the outer periphery of the steel pipe column 102, and is joined to the beam 110 at three ends.

  Since the diaphragm 120 is a flat steel plate, the diaphragm 120 is easier to manufacture than a column beam connection structure made of cast steel. Moreover, since the diaphragm 120 is an outer diaphragm, the steel pipe column 102 to be erected can be configured without being cut at the joint portion with the beam 110, and the number of processing steps for manufacturing is reduced, which contributes to cost reduction.

  Since the notch 120a is formed in the diaphragm 120, the steel pipe column 102 and the stiffener 130 inside the diaphragm 120 can be arranged so as to contact each other. As a result, the distance between the outer wall facing the column beam connection structure 100 and the steel pipe column 102 can be reduced. A hollow portion 132 is formed between the steel pipe column 102 and the stiffener 130 by providing a notch portion 120 a in the diaphragm 120.

  A plurality of diaphragms 120 are arranged in the column axis direction, and two diaphragms 120 support the beam 110 above and below in the height direction of the beam 110. A plate 122 is disposed between the two diaphragms 120 in parallel with the column axis of the steel pipe column 102. Of the two diaphragms 120, the upper diaphragm 120 is joined to the upper flange 114 of the beam 110, and the lower diaphragm 120 is joined to the lower flange 114 of the beam 110. Further, the plate 122 is joined to the web 112 of the beam 110. The plate 122 may be integrated with the web 112 of the beam 110. If the plate 122 and the web 112 are integrally formed in advance, when the beam 110 is joined to the steel pipe column 102, the plate 122 integrated with the web 112 of the beam 110 abuts on the steel pipe column 102, and the beam 110 is The steel pipe column 102 can be joined as it is.

  The joining of the end of the diaphragm 120 or the end of the plate 122 and the end of the beam 110 is, for example, welding. However, the present invention is not limited to welding. For example, although not shown, the diaphragm 120 and the flange 114 of the beam 110 are bolted and the plate 122 and the web 112 of the beam 110 are bolted via a splice plate. Good.

  The joining of the diaphragm 120 and the steel pipe column 102 is, for example, welding, and is joined in a range excluding the notch 120a. A welded portion 140 formed by welding is as shown in FIG. When the steel pipe column 102 and the stiffener 130 are arranged so as to be in contact with each other, welding cannot be performed in a region where the steel pipe column 102 and the stiffener 130 are close to each other, or welding is insufficient. On the other hand, by providing the notch 120a, the steel pipe column 102 and the diaphragm 120 cannot be welded in the range of the notch 120a. That is, by forming the notch 120a, it is possible to clarify the range that requires welding. In addition, by setting the not-to-be-welded area as the notch 120a, a part of the diaphragm 120 in which the transmission of force is unclear because the flow of force is not well understood even when welding is removed from the beginning. Can do.

  The stiffener 130 (second plate-like member) is a flat steel plate, is disposed in a direction perpendicular to the diaphragm 120, and is joined at the end of the diaphragm 120. The stiffener 130 has the same length as the length of the diaphragm 120 in the width direction. As shown in FIGS. 1 and 2, the height of the stiffener 130 when the column beam connection structure 100 is viewed from the front may be a height at which one diaphragm 120 can be joined. Are arranged for each diaphragm 120. Although not shown, the height of the stiffener 130 may be a height connecting two diaphragms 120 arranged in the column axis direction of the steel pipe column 102 in the vertical direction. One diaphragm 120 is provided.

  By providing the stiffener 130, the force transmitted to the diaphragm 120 is transmitted to the stiffener 130. The stiffener 130 can prevent the diaphragm 120 from being deformed.

  The stiffener 130 and the diaphragm 120 are joined by welding within a range excluding the notch 120a. Similarly to the joining of the steel pipe column 102 and the diaphragm 120, when the steel pipe column 102 and the stiffener 130 are arranged so as to contact each other, welding cannot be performed in a region where the steel pipe column 102 and the stiffener 130 are close to each other. May be insufficient. On the other hand, in the present embodiment, by providing the notch portion 120a, a part of the diaphragm 120 in which the transmission of force is unclear because the flow of force is not well understood even when welding is removed from the beginning. Yes. As a result, the stiffener 130 and the diaphragm 120 are reliably welded and joined within the range excluding the notch 120a.

  When the stiffener 130 and the steel pipe column 102 are arranged in contact with each other, as shown in FIG. 1B, the stiffener 130 and the steel pipe column 102 are joined by welding 142 in the vicinity of the upper and lower contact points of the stiffener 130. Also good. Thereby, since the force transmitted from the diaphragm 120 to the stiffener 130 is further transmitted from the stiffener 130 to the steel pipe column 102, the structural performance of the column-beam joint structure 100 is improved. Moreover, since the rigidity of the stiffener 130 is added to the steel pipe column 102, it contributes to the prevention of buckling of the steel pipe column 102.

  As described above, according to the beam-column joint structure 100 of the present embodiment, when the beam-column joint structure 100 is used for an outer peripheral portion of a building or the like, the amount of protrusion to the outside of the stiffener 130 is minimized. The distance between the pillar 102 and the outer wall or the like facing the pillar-beam joint structure 100 can be reduced. As a result, the space utilization efficiency of the building is improved.

  In addition, the column beam connection structure 100 is made of a steel plate and further includes a diaphragm 120 provided with notches 120a and the like in consideration of weldability, so that workability and manufacturability are improved, and manufacturing cost is also reduced. Can be reduced.

  Next, with reference to FIG. 3 to FIG. 5, a modified example of the column beam joint structure 100 according to the first embodiment of the present invention will be described. 3 to 5 are a cross-sectional view (A), a front view (B), and a side view (C) showing a modification of the column beam connection structure 100 according to the present embodiment, respectively.

  In the example shown in FIG. 3, the length in the width direction of the stiffener 230 when the column beam connection structure 100 is viewed from the front is shorter than the stiffener 130 of the embodiment shown in FIGS. 1 and 2. The diaphragm 220 has a shape that matches the length of the stiffener 230. As described above, the lengths of the stiffeners 130 and 230 and the shapes of the diaphragms 120 and 220 according to the present embodiment can be changed according to the design conditions of the column beam connection structure 100.

  In the example shown in FIG. 4, the distance between the steel pipe column 102 and the stiffener 330 is longer than in the embodiment shown in FIGS. 1 and 2, and the diaphragm 320 has a shape in which the steel pipe column 102 and the stiffener 330 do not contact each other. . Thus, this embodiment does not necessarily need to be so close that the steel pipe column 102 and the stiffener 330 are in contact with each other.

  Also in the example shown in FIG. 4, as in the embodiment shown in FIGS. 1 and 2, the steel pipe column 102 and the diaphragm 320 are welded outside the range of 60 ° around the column axis of the steel pipe column 102 facing the stiffener 330. To be joined. A welded portion 140 formed by welding is as shown in FIG.

  In the example shown in FIG. 5, the length in the width direction of the stiffener 430 when the column beam connection structure 100 is viewed from the front is shorter than the stiffener 330 of the embodiment shown in FIG. 4. The diaphragm 420 has a shape that matches the length of the stiffener 430.

(Second Embodiment)
Next, a column beam joint structure 200 according to a second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a cross-sectional view (A), a front view (B), and a side view (C) showing the column beam connection structure 200 according to the present embodiment.

  In the second embodiment shown in FIG. 6, unlike the first embodiment shown in FIGS. 1 and 2, two beams 110 are joined to the column-beam joint structure 100. The column beam joint structure 200 according to the present embodiment can be applied to, for example, a corner of an outer peripheral portion of a building.

  The two beams 110 are joined to the diaphragm 520 so as to be orthogonal to each other. Also, two stiffeners 530 are arranged orthogonal to each other. At this time, a notch 520 a is formed in the diaphragm 520 so that the diaphragm 520 is disposed at the corner of the column-beam joint structure 200 formed by the two stiffeners 530. Also in this embodiment, as in the first embodiment, the steel pipe column 102 and the diaphragm 520 are welded and joined outside the range of 60 ° around the column axis of the steel pipe column 102 facing the stiffener 530. A welded portion 140 formed by welding is as shown in FIG.

  According to the beam-column joint structure 200 of the present embodiment, when the beam-column joint structure 200 is used at a corner of the outer peripheral portion of a building, the amount of overhang to the outside of the stiffener 530 is minimized. Similarly to the embodiment, the distance between the steel pipe column 102 and the outer wall or the like facing the beam-to-column connection structure 200 can be reduced. As a result, the space utilization efficiency of the building is improved.

  Further, the column beam connection structure 200 is made of a steel plate, and further includes a diaphragm 520 provided with a notch 520a and the like in consideration of weldability, so that workability and manufacturability are improved, and manufacturing cost is also increased. Can be reduced.

  Next, with reference to FIGS. 7-10, the modification of the column beam junction structure 200 which concerns on the 2nd Embodiment of this invention is demonstrated. FIGS. 7 to 10 are a cross-sectional view (A), a front view (B), and a side view (C), respectively, showing modified examples of the beam-column joint structure 200 according to the present embodiment.

  In the example shown in FIG. 7, the length in the width direction of the stiffener 630 when the column beam joint structure 200 is viewed from the front is shorter than the stiffener 530 of the embodiment shown in FIG. 6. The diaphragm 620 has a shape that matches the length of the stiffener 630. As described above, the lengths of the stiffeners 530 and 630 and the shapes of the diaphragms 520 and 620 of the present embodiment can be changed according to the design condition of the column beam joint structure 200.

  In the example illustrated in FIG. 8, the distance between the steel pipe column 102 and the stiffener 730 is longer than that in the embodiment illustrated in FIG. 6, and the diaphragm 720 has a shape in which the steel pipe column 102 and the stiffener 730 do not contact each other. Thus, this embodiment does not necessarily need to be so close that the steel pipe column 102 and the stiffener 730 are in contact with each other.

  Also in the example shown in FIG. 8, as in the embodiment shown in FIG. 6, the steel pipe column 102 and the diaphragm 720 are welded and joined outside the range of 60 ° around the column axis of the steel pipe column 102 facing the stiffener 730. Is done. A welded portion 140 formed by welding is as shown in FIG.

  In the example shown in FIG. 9, the width in the width direction of the stiffener 830 when the column beam joint structure 200 is viewed from the front is shorter than the stiffener 730 of the embodiment shown in FIG. 8. The diaphragm 820 has a shape that matches the length of the stiffener 830.

  The example shown in FIG. 10 differs from the modified example of the embodiment shown in FIG. 7 in the configuration of the corners of the column beam connection structure 200. In the example shown in FIG. 7 and the like, the two stiffeners 630 are arranged in contact with each other. At this time, the stiffeners 630 may be joined to each other by welding. On the other hand, the example shown in FIG. 10 is common to the example shown in FIG. 7 in that the two stiffeners 930 are orthogonal to each other, but the two stiffeners 930 are spaced apart from each other. The diaphragm 920 has a shape that matches the length of the stiffener 930.

(Experimental example on local strength of beam-column joint structure)
Next, an experimental example relating to the local strength of the column beam joint structure 100 according to the first embodiment of the present invention will be described. FIG. 11 is a cross-sectional view (A) and a front view (B) showing a test body (VS test body) based on the column beam connection structure according to the present embodiment. FIG. 12 is a cross-sectional view (A) and a front view (B) showing a test body (CY test body) based on a conventional beam-column joint structure. FIG. 13 is a graph showing the load-strain relationship of the VS specimen. FIG. 14 is a graph showing the load-strain relationship of the CY specimen.

  The test body (VS test body) based on the column beam connection structure according to the present embodiment is bonded to the steel pipe column 1002, the beam flange 1014, the diaphragm 1020 bonded to the steel tube column 1002 and the beam flange 1014, and the diaphragm 1020. It consists of a stiffener 1030 perpendicular to the diaphragm 1020. Similarly to the first embodiment, the diaphragm 1020 is provided with a notch 1020a and a cavity 1032 is formed. The steel pipe column 1002 and the diaphragm 1020 are joined by welding in a range other than the range of 60 ° around the column axis of the steel pipe column 1002 facing the stiffener 1030 as indicated by a welded portion 1040. Further, the steel pipe column 1002 and the stiffener 1030 are joined by welding as indicated by a welded portion 1042.

  On the other hand, a test body (CY test body) based on a conventional beam-column joint structure includes a steel pipe column 1102, a beam flange 1114, and a diaphragm 1120 joined to the steel pipe column 1102 and the beam flange 1114. The steel pipe column 1102 and the diaphragm 1120 are joined together by welding on the entire circumference of the steel pipe column 102. Unlike the VS specimen, the CY specimen is a joint structure that does not have the stiffener 1030.

  A gauge capable of measuring strain was installed on the VS test body and the CY test body. For both the VS test body and the CY test body, gauges 1 and 4 were attached to the beam flange 1014 and the beam flange 1114, and gauges 7 and 9 were attached to the diaphragms 1020 and 1120, as shown in FIGS. Moreover, the gauge 11 was affixed on the stiffener 1030 to the VS test body. Then, a monotonic tensile force was applied to both ends of the beam flange 1014 of the VS test body and the beam flange 1114 of the CY test body, and the strain at each part was measured. FIG. 13 and FIG. 14 are graphs showing the load-strain relationship generated as a result of applying the tensile force.

  As shown in FIG. 13, in the test body (VS test body) based on the column beam connection structure according to the present embodiment, the diaphragm 1020 portion (gauge 9) on the stiffener 1030 side remains elastic. The diaphragm 1020 portion (gauge 7) on the opposite side is subjected to plastic strain in substantially the same manner as a CY specimen described later. The yielding of the beam flange 1014 was after the diaphragm 1020.

  As shown in FIG. 14, in the test body (CY test body) based on the conventional column beam connection structure, the diaphragm 1120 first yields, and then the beam flange 1114 yields.

  When comparing the magnitude relationship between the proof stress of the beam flange and the local joint (diaphragm), the experimental proof strength obtained from the experimental results was in good agreement with the calculated proof stress. Both the VS test body and the CY test body followed the course of joint yield → beam flange yield → beam flange strain hardening → joint (diaphragm) fracture, and matched the magnitude relationship of the calculation strength.

  Moreover, the experimental behavior of the test body (VS test body) based on the beam-column joint structure according to the present embodiment was almost the same as the test body (CY test body) based on the conventional beam-column joint structure. From the above results, the beam-column joint structure 100 according to the present embodiment having the stiffener 130 has the same proof stress as the conventional beam-column joint structure even if there is a portion where the steel pipe column 102 and the diaphragm 120 are not partly welded. It was found that the structural performance was satisfied.

(Welding range between steel pipe column and diaphragm)
Next, with reference to FIG. 15 and FIG. 16, the welding range of the steel pipe column and the diaphragm of the column beam joint structures 100 and 200 according to the first and second embodiments of the present invention will be described. FIG. 15 is a cross-sectional view showing a welding range between a steel pipe column and a diaphragm of the column beam connection structure according to the first embodiment of the present invention. FIG. 16: is sectional drawing which shows the welding range of the steel pipe column and diaphragm of the column beam junction structure which concerns on the 2nd Embodiment of this invention.

First, the case of the first embodiment will be described.
In the column beam connection structure 100 of the first embodiment in which the steel pipe column 102 and the stiffener 130 are in contact, the range of the angle A as shown in FIG. 15 is cut without welding the steel pipe column 102 and the diaphragm 120. This is a range in which the notch can be provided. The angle A is an angle formed by two line segments drawn from the cross-sectional center of the steel pipe column 102 to the stiffener 130 side, and is an angle that determines the start of notch formation. In consideration of the housing of the diaphragm 120, the steel pipe column 102, the stiffener 130, the assembly of the beam-to-column connection structure 100, and the weldability, about 30 ° to 90 ° (one side angle is about 15 ° to 45 °) is an appropriate range.

  Further, in the column-beam joint structure 100 of the first embodiment, an angle B as shown in FIG. 15 is an angle that determines the length of the stiffener 130 in the width direction. Considering that the stiffener 130 is not too long, an appropriate range is within about 150 ° (about 75 ° on one side angle).

  Although not shown, when the steel pipe column 102 and the stiffener 130 are separated as shown in FIG. 4, the angle A is not particularly defined, and the steel tube column 102 may be welded to the diaphragm 120 all around the circumference. Good. However, when the interval between the steel pipe column 102 and the stiffener 130 is narrow at about 25 mm or less, the range of the angle A defined above is about 30 ° to 90 ° (one side angle is about 15 ° to 45 °), It is not necessary to weld the steel pipe column 102 and the diaphragm 120.

  Also, in the case where the steel pipe column 102 and the stiffener 130 are separated as shown in FIG. 4, the angle B is about 150 ° as in the case where the steel pipe column 102 and the stiffener 130 are in contact (75 on one side angle). The range within (°) is an appropriate range.

Next, a second embodiment will be described.
In the column beam connection structure 200 of the second embodiment in which the steel pipe column 102 and the stiffener 530 are in contact, the range of the angle C + D as shown in FIG. 16 is cut without welding the steel pipe column 102 and the diaphragm 520. This is a range in which the notch can be provided. The angle C + D is an angle formed by two line segments drawn from the cross-sectional center of the steel pipe column 102 toward the stiffener 530 side, and is an angle that determines the start of notch formation. Considering that the two stiffeners 530 are arranged orthogonal to each other, the diaphragm 520, the steel pipe column 102, the stiffener 530, the assembly of the column beam connection structure 200, and the weldability, the angle C + D is about 30 ° to 80 °. It is an appropriate range. And it is appropriate that the angle C is about 15 ° to 45 °, and the angle D is about 15 ° to 35 °. The reason why the angle D is narrower than the angle C is to prevent the angles D from competing with each other so that the diaphragm 520 is disposed at the corner formed by the two stiffeners 530.

  Further, in the column beam connection structure 200 of the second embodiment, an angle E + F as shown in FIG. 16 is an angle that determines the length of the stiffener 530 in the width direction. Considering that the stiffener 530 is not too long, the angle E + F is within an appropriate range of about 110 °. It is appropriate that the angle E is within about 75 ° and the angle D is within about 35 °.

  Although not shown, when the steel pipe column 102 and the stiffener 730 are separated as shown in FIG. 8, the angle C + D is not particularly defined, and the steel pipe column 102 may be welded to the diaphragm 720 around the entire circumference. Good. However, when the distance between the steel pipe column 102 and the stiffener 730 is about 25 mm or less and narrow, the range of the angle C + D defined above is about 30 ° to 80 ° (the angle C is about 15 ° to 45 °, the angle D Is about 15 ° to 35 °), and the steel pipe column 102 and the diaphragm 720 need not be welded.

  Further, in the case where the steel pipe column 102 and the stiffener 130 are separated as shown in FIG. 8, the angle E + F is about 110 ° (the angle E is 75) as in the case where the steel pipe column 102 and the stiffener 130 are in contact. Within an appropriate range is about ° and angle D is about 35 °.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

  For example, in the above-described embodiment described with reference to the drawings, the case where the beam core coincides with the column core is illustrated, but the present invention is not limited to such an example. For example, the beam core may be shifted from the center of the column cross section, and for example, the beam may be moved to the outside of the building. With this configuration, the distance between the beam and the outer wall disposed outside the building can be made narrower.

It is sectional drawing (A), a front view (B), and a side view (C) which show the column beam connection structure which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the column beam junction structure which concerns on the same embodiment. It is sectional drawing (A), the front view (B), and the side view (C) which show the modification of the column beam junction structure which concerns on the embodiment. It is sectional drawing (A), the front view (B), and the side view (C) which show the modification of the column beam junction structure which concerns on the embodiment. It is sectional drawing (A), the front view (B), and the side view (C) which show the modification of the column beam junction structure which concerns on the embodiment. It is sectional drawing (A), the front view (B), and the side view (C) which show the column beam junction structure which concerns on the 2nd Embodiment of this invention. It is sectional drawing (A), the front view (B), and the side view (C) which show the modification of the column beam junction structure which concerns on the embodiment. It is sectional drawing (A), the front view (B), and the side view (C) which show the modification of the column beam junction structure which concerns on the embodiment. It is sectional drawing (A), the front view (B), and the side view (C) which show the modification of the column beam junction structure which concerns on the embodiment. It is sectional drawing (A), the front view (B), and the side view (C) which show the modification of the column beam junction structure which concerns on the embodiment. It is sectional drawing (A) and front view (B) which show the test body (VS test body) based on the beam-column joining structure which concerns on the 1st Embodiment of this invention. It is sectional drawing (A) and front view (B) which show the test body (CY test body) based on the conventional column beam connection structure. It is a graph which shows the load-strain relationship of a VS test body. It is a graph which shows the load-strain relationship of a CY test body. It is sectional drawing which shows the welding range of the steel pipe column and diaphragm of the beam-column joining structure which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the welding range of the steel pipe column and diaphragm of the column beam junction structure which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

1, 4, 7, 9, 11 Gauge 100, 200 Beam-column joint structure 102, 1002, 1102 Steel tube column 110 Beam 112 Web 114 Flange 120, 220, 320, 420, 520, 620, 720, 820, 920, 1020, 1120 Diaphragm 120a, 220a, 520a, 620a, 920a, 1020a Notch 122 Plate 130, 230, 330, 430, 530, 630, 730, 830, 930, 1030 Stiffener 132, 232, 532, 632, 932, 1032 Cavity Part 140, 142, 1040, 1042 Welded part 1014, 1114 Beam flange

Claims (14)

A column beam connection structure for connecting a steel pipe column and the beam connected to a standing steel tube column and a beam made of a circular steel pipe,
A flat plate-like first plate-like member joined to the steel pipe pillar so as to surround the outer periphery of the steel pipe pillar, and joined to the beam at at least one end;
A column beam connection comprising: a flat plate-like second plate member that is disposed in a direction perpendicular to the surface of the first plate member and is joined to the first plate member. Construction.   The beam-to-column connection structure according to claim 1, wherein the steel pipe column and the first plate-like member are welded and joined.   The column beam connection structure according to claim 1, wherein the first plate-like member has a cutout portion cut out on the second plate-like member side.   4. The beam-column joint structure according to claim 3, wherein the second plate-shaped member is disposed in contact with the steel pipe column. 5.   5. The beam-column joining structure according to claim 3, wherein the steel pipe column and the first plate-like member are welded and joined within a range excluding the notch portion. The steel pipe column and the first plate member are:
The column according to claim 1, wherein the column is welded and joined outside the range of 30 ° to 90 ° around the column axis of the steel pipe column facing the second plate-shaped member. Beam joint structure.   The notch is characterized in that the first plate-like member is cut out in a range of 30 to 90 ° around the column axis of the steel pipe column facing the second plate-like member. Item 7. The beam-column joint structure according to any one of Items 3 to 6. The steel pipe column and the first plate member are:
The beam-to-column connection structure according to any one of claims 1 to 5, wherein the beam-to-column connection structure is welded and joined outside the range of 60 ° around the column axis of the steel pipe column facing the second plate member. .   The notch portion is cut out in a range of 60 ° around a column axis of the steel pipe column where the first plate-like member is opposed to the second plate-like member. The beam-column joint structure according to any one of? When the two second plate-like members are orthogonal to each other,
The beam-column joint structure according to any one of claims 3 to 9, wherein the notch is formed so that the first plate-like member is disposed at a corner. The notch is
It is cut out in a range of 15 ° to 35 ° from the virtual orthogonal line perpendicular to the second plate member and passing through the central axis of the steel pipe column toward the corner. The beam-column joint structure according to 10. The two first plate-like members disposed in the column axis direction of the steel pipe column and supporting the beam in the vertical direction of the beam;
2. The beam-column joining structure according to claim 1, comprising two second plate-like members joined one by one for each first plate-like member. The two first plate-like members disposed in the column axis direction of the steel pipe column and supporting the beam in the vertical direction of the beam;
The column beam connection structure according to claim 1, further comprising: one second plate member that joins the two first plate members. An upright steel pipe column made of a circular steel pipe;
A beam connected to the steel pipe column;
A beam-column joining structure for joining the steel pipe column and the beam;
With
The column beam connection structure is
A flat plate-like first plate-like member joined to the steel pipe pillar so as to surround the outer periphery of the steel pipe pillar, and joined to the beam at at least one end;
A structure comprising: a flat plate-like second plate-like member disposed in a direction perpendicular to the surface of the first plate-like member and joined to the first plate-like member.

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