JP2009203712A - Steel frame member connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure which simplifies a connection structure between steel frame members and is excellent in workability. <P>SOLUTION: The steel frame member connection structure is available for connection between the mutually adjacent column steel members 11, 13. According to the steel frame member connection structure, the mutually adjacent steel frame members 11, 13 are arranged such that connection end faces 19 at longitudinal ends of the steel frame members are abutted on each other, and a plurality of pairs of fitting recesses 3 are formed in both the connection end faces 19 at locations corresponding to each other. Further dowels 5 are fitted into the mutually pairing fitting recesses 3, respectively. Thus by way of the dowels 5, shear force, bending moment, etc. acting on the steel frame members are transmitted to each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a joining structure for steel members applied when joining steel members constituting columns and beams of a building structure.

  Conventionally, various structures have been proposed as a joint structure between steel members constituting columns of a building structure or between steel members constituting a beam (see, for example, Non-Patent Document 1 and Patent Documents 1 to 3). ). FIG. 23 shows a typical example of a joining structure between steel members as shown in Non-Patent Document 1 and Patent Documents 1 to 3.

  The joining structure 100 shown in FIG. 23 (a) extends across the entire cross section of the lower end portion of the upper-floor side column steel member 101 composed of a square steel pipe and the upper end portion of the lower-floor side column steel member 102. Then, it is joined by performing a complete penetration welding W. Generally, when joining steel members by welding, the erection piece 103 is provided on the lower side surface of the upper-layer side column steel member 101 or the lower side surface of the lower-level column steel member 102, and the adjacent column steel members By attaching the attachment plate 104 to the erection piece 103 provided on the portions 101 and 102 and joining them with the high-strength bolts 105, the column steel members 101 and 102 adjacent to each other are temporarily fixed. And after giving the welding joining W between the steel members 101 and 102 for each pillar, the erection piece 103 is removed by gas cutting etc., and a joining process is completed.

  Moreover, the joining structure 110 shown by FIG.23 (b) has the lower end part of the steel member 111 for upper floor side columns comprised from H-section steel with a H-shaped cross section, and the upper end part of the steel member 112 for lower floor side columns. Are joined by high-strength bolt joining. On each surface of the lower part of the upper-floor side column steel member 111 and the upper part of the lower-floor side column steel member 112, an attachment plate 114 is applied across these, and the two attachment plates 114 are It is comprised so that each steel member 111,112 for pillars may be pinched | interposed. And the bolt 115 is penetrated by these two attachment plates 114 and each column steel member 111,112, and, thereby, the column steel members 111,112 of the upper and lower floor side are joined.

23 (c) and 23 (d) includes a lower end portion of an upper floor side steel member 121 made of a circular steel pipe and an upper end of a lower floor side steel member 122. An end plate 126 made of a plate material is provided on the portion, and the end plates 126 at the ends of the columnar steel members 121 and 122 are brought into contact with each other and then joined by bolts 125. FIG. 23 (c) shows a front view of the joining structure 120, FIG. 23 (d) shows a plan view of the joining structure 120, and reference numeral 127 denotes the steel members 121, 122 for each pillar. A rib 127 is shown secured to the side and end plate 126 side.
Published by the Architectural Institute of Japan “Guidelines for Designing Steel Structure Joints” published by Maruzen Co., Ltd. November 10, 2001 First Edition 22nd page Japanese Patent Laid-Open No. 06-185114 JP 2007-120097 A Japanese Patent Laid-Open No. 06-299603

  By the way, when the joining structure 100 shown in FIG. 23A described above is applied, many processes such as a welding process and a cutting process of the erection piece 103 are required, which is troublesome and reduces workability. It becomes. In addition, the welding process largely depends on the skill of the operator, and it is difficult to ensure the accuracy of the welding joint.

  Further, when the joining structure 110 shown in FIG. 23B is applied, the axial force acting on the column steel members 111 and 112, the shearing force, and the bending moment are all caused by the frictional force caused by tightening the bolts. However, to obtain sufficient frictional force, it is necessary to increase the shaft diameter of the bolt or increase the number of bolts, which leads to a decrease in workability and an increase in construction cost. It was.

  Further, when the joining structure 120 shown in FIGS. 23 (c) and 23 (d) is applied, among the forces acting on the column steel members 121 and 122, the axial force is between the end plates 126. Since resistance is caused by metal touch, there is an advantage that the number of bolts and the like required are smaller than the joining structure 110 shown in FIG. However, since the end plate 126 has a shape protruding outward from the outer peripheral surface of the column steel members 121 and 122 on the upper and lower floors side, the end plate 126 is surrounded by the column steel members 121 and 122, for example. This protruding part may become an obstacle, for example, the indoor space area is reduced, and the degree of freedom in design is limited. Further, it is necessary to provide such end plates 126 and ribs 127 at the longitudinal ends of the respective columnar steel members 121 and 122, which increases the manufacturing cost.

  Accordingly, the present invention has been devised in view of the above-described problems, and the object of the present invention is to simplify the joining structure between the steel members, and to perform a welding operation when joining the steel members. There is no need to improve the degree of freedom during design, and it is another object of the present invention to provide a steel member joining structure with excellent workability.

  In order to solve the above-mentioned problems, the present inventor arranges the steel members to be joined to each other such that the joining end faces at the end portions in the longitudinal direction are in contact with each other and correspond to each other at the joining end faces. At least one set of fitting recesses is provided at a position, and a dowel member is fitted into the set of fitting recesses, and a steel member joining structure has been invented.

  That is, the steel member joining structure according to claim 1 is a steel member joining structure for joining a plurality of steel members used as pillars of a building structure in the longitudinal direction thereof. The members are arranged such that the joining end surfaces at the end portions in the longitudinal direction are in contact with each other, and at least one fitting recess is provided on one of the joining end surfaces, and the other end is provided in the fitting recess. A dowel member protruding from the joining end face is fitted.

  In the invention according to claim 1, the steel member joining structure according to claim 2 of the present invention is the invention according to claim 1, wherein at least one set of the steel members arranged in contact with each other at the joining end faces are located at positions corresponding to each other on the joining end faces. A fitting recess is provided, and a dowel member is fitted in the set of fitting recesses.

  The steel member joining structure according to claim 3 of the present application is the invention according to claim 1 or 2, wherein the fitting recess is formed of an insertion hole that is opened from the joining end surface in the longitudinal direction of the steel member. The dowel member is composed of a rod-shaped body.

  The steel member joining structure according to claim 4 of the present invention is the invention according to claim 3, wherein the dowel member is composed of a rod-like body having a male screw threaded on the outer peripheral surface on one end side in the long axis direction, The insertion hole of one of the steel members to be joined to each other is provided with a female screw portion that can be screwed to the male screw portion on its inner peripheral surface, and the male screw portion is screwed to the female screw portion. Thus, one end side of the rod-shaped body is fitted into the insertion hole of the one steel member.

  The steel member joining structure according to claim 5 of the present invention is the invention according to claim 1 or 2, wherein the fitting recess is formed by a fitting groove extending in the thickness direction of the steel member. It is characterized by that.

  The joining structure of the steel member according to claim 6 of the present application is the invention according to any one of claims 1 to 5, wherein the dowel member fitted in the fitting recess and the steel member are penetrated. A retaining member is inserted into the through hole.

  The steel member joining structure according to claim 7 of the present invention is the invention according to any one of claims 1 to 6, wherein a side plate of the steel member is applied across the steel members to be joined to each other. It is contacted and the said attachment plate is bolted with respect to the side surface of the said steel frame member which should be joined mutually.

  The joint structure of the steel member according to claim 8 of the present application is the invention according to claim 1 or 2, wherein the fitting recess is constituted by a fitting groove extending in the plate thickness direction of the steel member, and The accessory plate is in contact with the side surface of the steel member across the steel member to be joined, and the accessory plate is bolted to the side surface of the steel member to be joined to each other. The steel member is provided so as to cover the dowel member fitted in the fitting groove from both sides in the thickness direction of the steel member.

  Further, the inventor of the present invention provides a steel member joining structure for joining a plurality of steel members used as beams of a building structure in the longitudinal direction thereof. The joint end surfaces of the joints are arranged in contact with each other, and at least one fitting recess is provided on one of the joint end surfaces, and a dowel protruding from the other joint end surface is provided in the fitting recess. 10. The retaining member according to claim 9, wherein a member is fitted, and a dowel member fitted in the fitting recess and a through hole penetrating the steel frame member are inserted. A joint structure for steel members was invented.

  Further, the inventor of the present invention provides a steel member joining structure for joining a plurality of steel members used as beams of a building structure in the longitudinal direction thereof. The joint end surfaces of the joints are arranged in contact with each other, and at least one fitting recess is provided on one of the joint end surfaces, and a dowel protruding from the other joint end surface is provided in the fitting recess. The member is fitted and the splicing plate is brought into contact with the side surface of the steel member across the steel member to be joined to each other, and the splicing plate is bolted to the side surface of the steel member to be joined to each other. A steel member joining structure according to claim 10 is invented.

  The steel member joining structure according to claim 11 of the present application is the invention according to claim 9 or 10, wherein the steel members arranged so that the joining end surfaces are in contact with each other are at least at positions corresponding to each other on the joining end surface. A set of fitting recesses is provided, and a dowel member is fitted into the set of fitting recesses.

  The joining structure of the steel member according to claim 12 of the present application is the invention according to claim 10 or 11, wherein the fitting recess is formed by a fitting groove extending in the plate thickness direction of the steel member, The accessory plate is provided so as to cover the dowel member fitted in the fitting groove from both sides of the steel member in the thickness direction.

  The joining structure of the steel member according to claim 13 of the present application is the invention according to any one of claims 9 to 11, wherein the fitting recess is opened from the joining end face toward the longitudinal direction of the steel member. It is comprised from the penetration hole, The said dowel member is comprised from the rod-shaped body, It is characterized by the above-mentioned.

  In the invention according to claim 13, the dowel member is composed of a rod-like body having a male screw threaded on the outer peripheral surface on one end side in the long axis direction. The insertion hole of one of the adjacent steel frame members is provided with a female screw portion that can be screwed to the male screw portion on the inner peripheral surface thereof, and the male screw portion is connected to the female screw portion. One end side of the rod-shaped body is fitted into the insertion hole of the one steel member by screwing.

  In addition, the inventor is used for the steel member joining structure according to any one of claims 1 to 14, and is characterized in that at least one fitting recess is provided in advance on the joining end face. The steel member according to claim 15 is invented.

  Although the present invention having the above-described configuration can be embodied by a simple configuration in which the fitting recess 3 is provided in the steel member and the dowel member 5 is fitted in the fitting recess 3, the steel frame is embodied. The compressive axial force, shearing force, and bending moment acting on the joint 2 between the members can be transmitted through the joint end face 19 and the dowel member 5, and the joint structure between the steel members is simplified as compared with the prior art. It becomes possible to do. Further, at the time of joining between steel members, the dowel member 5 protruding from the joining end surface 19 of one steel member 11 is merely fitted into the fitting recess 3 of the joining end surface 19 of the other steel member 13. Joining work is completed, welding work is unnecessary, and workability is excellent. Moreover, in the junction part 2 of the steel frame members 11 and 13, since the member which protrudes toward the outer peripheral surface of the steel frame members 11 and 13 is not provided, the freedom degree at the time of design is improving.

  Hereinafter, as an embodiment for carrying out the present invention, a steel member joining structure applied when joining steel members constituting columns and beams of a building structure will be described in detail with reference to the drawings.

  The present invention is applied to a joint between steel members in a building structure, and more specifically, a plurality of steel members used as pillars in a building structure and a plurality of members used as beams. It is used for joining steel members in a line in the longitudinal direction. Hereinafter, the case where the adjacent steel members for pillars are joined to each other will be mainly described in detail.

First Embodiment First, a first embodiment of a steel member joining structure 1 to which the present invention is applied will be described. 1-3 has shown 1st Embodiment of the joining structure 1 of the steel frame member.

  FIG. 1A is a perspective view showing a configuration of a column steel member 11 for an upper floor and a column steel member 13 for a lower floor before joining. The steel members 11 and 13 in the present embodiment are composed of H-shaped steel having a substantially H-shaped cross section in which intermediate portions of flange portions 16 that are substantially parallel to each other are integrally attached to both sides of the web portion 15. Has been.

  A plate-like member such as an end plate is not attached to the joining end surface 19 at the longitudinal ends of the upper-floor side steel member 11 and the lower-floor side steel member 13, and FIG. As shown to (a), the some fitting recessed part 3 is formed. In this embodiment, the fitting recess 3 includes an insertion hole 31 that is opened from the joint end face 19 of the steel members 11 and 13 in the longitudinal direction of the steel members 11 and 13. The insertion hole 31 of the steel member 11 on the upper floor side is opened toward the lower floor side, and the insertion hole 31 of the steel member 13 on the lower floor side is opened toward the upper floor side. As will be described later, the insertion hole 31 is formed at a position corresponding to each other between the joint end surface 19 of the steel member 11 on the upper floor side and the joint end surface 19 of the steel member 11 on the lower floor side.

  The insertion hole 31 is opened by using a tool such as a drill with respect to the joint end surface 19 of the steel members 11 and 13, and the shape of the inner peripheral surface thereof is substantially circular. In the insertion hole 31 of the steel member 11 on the upper floor side, a female screw portion 35 that can be screwed with a threaded male screw is provided.

  As shown in FIGS. 1 (a) and 2 (a), a rod-like body 51 having a substantially circular cross section as shown in FIG. 1 (b) is inserted into the insertion hole 31 of the steel member 11 on the upper floor side. The constituted dowel member 5 is fitted. This rod-shaped body 51 is provided with a male screw portion 52 threaded on the outer peripheral surface on one end side in the major axis direction, and this male screw portion 52 is provided in the insertion hole 31 of the steel member 11 on the upper floor side. The internal thread portion 35 is fitted into the insertion hole 31 by being screwed together. As shown in FIG. 2 (b), the rod-shaped body 51 (the dowel member 5) is arranged in the major axis direction so that the other end side in the major axis direction protrudes from the joint end surface 19 of the steel member 11 on the upper floor side. Only a part of the range extending over the entire length is fitted into the insertion hole 31.

  2 (c) and 3 (a) are perspective views showing configurations of the upper-floor side steel member 11 and the lower-floor side steel member 13 after joining, and FIG. 3 (b) is a diagram of FIG. It is the figure which showed only the steel frame member 11 of the upper floor from 3 (a) by the dotted line, and was abbreviate | omitted. The steel members 11 and 13 to be joined to each other are arranged so that the respective joining end faces 19 abut over the entire joining end face 19, and the joining end faces of the upper ends of the steel members 13 on the lower floor side are arranged. The joint end surface 19 of the lower end part of the steel member 11 on the upper floor side is placed on 19.

  Here, when the steel members 11 and 13 to be joined to each other are arranged with their joint end faces 19 in contact with each other, the fitting recess 3 of the steel member 11 on the upper floor side and the steel frame on the lower floor side are arranged. The positions and the like of the respective fitting recesses 3 are adjusted in advance so that a set of the fitting recesses 3 with the fitting recesses 3 of the member 13 are provided in a plurality of sets at positions corresponding to each other on the respective joining end surfaces 19. Has been. And the other end side of the dowel member 5 (rod-like body 51) in which one end side is fitted in the fitting recess 3 (insertion hole 31) of the steel member 11 on the upper floor side is the steel member 11 on the upper floor side. Is fitted into the fitting recess 3 of the steel member 13 on the lower floor side provided at a position corresponding to the fitting recess 3. That is, the dowel member 5 (rod-like body 51) straddles a pair of fitting recesses 3 (insertion holes 31) formed in the adjacent steel members 11 and 13 and enters the set of fitting recesses 3. It will be fitted and arranged.

  A process of joining work for joining the steel member 11 on the upper floor side and the steel member 13 on the lower floor side using the dowel member 5 having the above-described configuration will be described.

  First, as shown in FIG. 2 (a), the male screw part 35 of the rod-like body 51 is screwed into the female screw part 35 of the insertion hole 31 of the steel member 11 on the upper floor side, and the steel member 11 on the upper floor side is inserted. One end side of the rod-shaped body 51 is fitted into the hole 31. This operation may be performed in advance in the factory when the steel members 11 and 13 are manufactured, or may be performed on the site after the steel members 11 and 13 are transported to the site.

  Next, as shown in FIG. 2 (b), the other end side of the rod-like body 51 protruding from the joining end surface 19 of the upper steel member 11 is inserted into the insertion hole 31 of the lower steel member 13. Drop and fit. Thereby, the joining work of the steel members 11 and 13 on the upper floor side and the lower floor side is completed.

  The effects of the steel member joining structure 1 having such a configuration will be described.

  As shown in Fig. 3 (a), the joint 2 between steel members used as pillars is usually subjected only to compression axial force from the upper floor side to the lower floor side during normal times. And the like, a shearing force and a bending moment act in a direction perpendicular to the longitudinal direction of the steel members 11 and 13. Here, since the steel members 11 and 13 joined to each other are arranged so that the joint end faces 19 abut over the entire surface, the joint end faces 19 are in metal touch with each other. Most of the compressive axial force acting from the upper floor side to the lower floor side acting on the steel member 11 on the floor side is transmitted to the steel member 13 on the lower floor side as it is. Further, since the dowel member 5 is fitted into the set of fitting recesses 3 across the set of fitting recesses 3 provided on the joining end surfaces 19 of the upper and lower steel members 11, 13, The shearing force acting on the steel member 11 on the floor side is transmitted to the steel member 13 on the lower floor side via the dowel member 5. Further, the bending moment generated between the steel members 11 and 13 is transmitted by metal touch within a range in which the stress generated at the tensile edges of the steel members 11 and 13 is not larger in absolute value than the stress generated by the compression axial force. I can do it.

  Thus, the steel member joining structure to which the present invention is applied can be realized by a simple configuration in which the fitting recess 3 is provided in the steel member and the dowel member 5 is fitted in the fitting recess 3. Nevertheless, the compressive axial force and shearing force acting on the joint 2 between the steel members are transmitted to the steel member 13 on the lower floor side via the dowel member 5. Further, the bending moment generated between the steel members 11 and 13 is transmitted by metal touch within a range in which the stress generated at the tensile edges of the steel members 11 and 13 is not larger in absolute value than the stress generated by the compression axial force. I can do it.

  Further, when joining the steel members, the other end of the dowel member 5 protruding from the joining end surface 19 of one steel member 11 is fitted into the fitting recess 3 of the joining end surface 19 of the other steel member 13. Joining work is completed only by combining them, welding work is unnecessary, and workability is excellent.

  Moreover, in the junction part 2 of the steel frame members 11 and 13, since the member which protrudes on the outer peripheral surface of the steel frame members 11 and 13 is not provided, the freedom degree at the time of design is improving.

  In addition, when the present invention is applied to the steel members 11 and 13 used as the pillars of the building structure, since the tensile axial force hardly acts on the steel members 11 and 13, it resists this tensile axial force. There is no need to provide a member for this purpose, and the joining structure can be further simplified.

  In particular, when the fitting recess 3 is constituted by the insertion hole 31, the work to be performed on the steel members 11 and 13 is only a drilling process, which is excellent in manufacturability.

  Details of each component of the steel member joining structure 1 according to the first embodiment will be described below.

  The steel members 11 and 13 are not particularly limited in cross-sectional shape, and are not only H-shaped steel having an H-shaped cross section, but also shaped steels and cross-sections such as T-shaped steel, I-shaped steel, grooved steel, and angle steel It may be embodied by a circular and square steel pipe. The cross-sectional shape and configuration of the steel members 11 and 13 may be any as long as they are cross-sectional shapes and configurations of known steel members.

  In order to form the insertion hole 31 in the joint end surface 19, the steel members 11 and 13 need to be configured to have a plate thickness that enables the insertion hole 31 to be cut. The steel members 11 and 13 are preferably made of a so-called ultra-thick or ultra-thick section steel, and the plate thickness is, for example, 15 mm to 100 mm.

  When the present invention is applied to the steel members 11 and 13 for columns, the joints 2 of the adjacent steel members 11 and 13 are not in the vicinity of the joints that are the joints between the column members and the beam members, It is preferable to be provided in the vicinity of an intermediate position between adjacent beam members on the upper floor side and beam members on the lower floor side. The reason for this is as follows.

  During an earthquake, a greater shearing force and bending moment are applied to the column members of a building structure than in normal times. Here, when a large bending moment is applied, a force (tensile axial force) in a direction in which the adjacent steel members 11 and 13 are separated from each other acts. For this reason, there exists a possibility that the dowel member 5 only fitted by the fitting recessed part 3 may be pulled out from one of the steel frame members 11 and 13, and there exists a possibility that the whole building structure may collapse. Here, the bending moment acting on the column member of the building structure during an earthquake tends to be large at the joint and very small at an intermediate position between adjacent beam members. For this reason, it is most rational in terms of structure to provide the joint portion 2 in the vicinity of an intermediate position between adjacent beam members. In addition, in order to make the position of the joint part 2 an intermediate position between adjacent beam members, the lengths of the steel members 11 and 13 in the longitudinal direction are adjusted.

  When the joint end surfaces 19 of the adjacent steel members 11 and 13 are disposed in contact with each other, they are necessarily in the same shape as long as the compression axial force can be transmitted between the adjacent steel members by metal touch on both sides. There is no need.

  The inclination angle of the joining end surface 19 with respect to the direction orthogonal to the longitudinal direction of the steel members 11 and 13 is not particularly limited. However, when used as the steel members 11 and 13 for pillars, if it is configured to be substantially parallel to the direction orthogonal to the longitudinal direction of the steel members 11 and 13, the joint end surface between the adjacent steel members 11 and 13 19 is preferable because the compression axial force is efficiently transmitted.

  The fitting recess 3 is provided on the joining end face 19 of the steel members 11 and 13 so that the dowel member 5 can be fitted, and is configured in a groove shape described later in addition to the insertion hole 31 as described above. The fitting groove 33 is embodied. The number, placement location, and size of the fitting recess 3 are determined according to the number, placement location, and size of the dowel member 5 to be fitted. It is not always necessary to provide one set of the fitting recesses 3 for each joint end face 19. As will be described later, at least one fitting recess 3 is provided only on one of the joint end faces 19, and the other joint end face 19 is provided on the other joint end face 19. The fitting recess 3 may not be provided.

  The length from the joint end surface 19 to the hole bottom 31a of the insertion hole 31 of the insertion hole 31 constituting the fitting recess 3 as shown in FIG. However, the longer the length, the deeper the dowel member 5 penetrates into the steel members 11 and 13, and the dowel member 5 becomes a hole in the insertion hole 31 when a shearing force acts on the steel members 11 and 13. The longer the length is, the larger the area of resistance against bearing against the side wall becomes, and it becomes easy to secure the proof stress of the dowel member 5.

  The dowel members 5 are adjacent to each other by being fitted into the set of fitting recesses 3 across the set of fitting recesses 3 provided on the joining end surfaces 19 of the adjacent steel members 11 and 13. It is a member that resists the shearing force and bending moment acting on the steel members 11 and 13. The dowel member 5 is embodied by a plate-like body 55 and a groove dowel member 59 described later, in addition to the rod-like body 51 as described above. The shape of the dowel member 5 is adjusted so that the outer surface shape is substantially the same as the inner surface shape of the pair of fitting recesses 3 provided on the joining end surfaces 19 of the adjacent steel members 11 and 13. .

  The number, location, and size of the dowel members 5 are not particularly limited, but any direction orthogonal to the longitudinal direction of the steel members 11 and 13 (for example, the thickness direction of the web portion 15 in FIG. 1). Even when a force is applied from the direction of the plate thickness of the flange portion 16, it is preferable that the connection between the steel members 11 and 13 can be secured. For this reason, it is preferable that the locations where the dowel members 5 are arranged are evenly arranged in the cross section perpendicular to the longitudinal direction of the steel members 11 and 13. The place where the dowel member 5 is arranged is determined according to the cross-sectional shape of the steel members 11 and 13. Further, when the number of dowel members 5 is only one, or when the shape of the dowel member 5 is a rod-like body, the dowel member 5 is applied when a shearing force acts on the joint 2 between the steel members 11 and 13. Since there is a possibility that the steel members 11 and 13 may rotate around the center, it is preferable to arrange two or more.

  Moreover, when the dowel member 5 is comprised from the rod-shaped body 51 and the plate-shaped body 55 mentioned later, it is preferable that the penetration hole 31 is provided in the center position of the plate | board thickness direction of the steel frame members 11 and 13. FIG. As a result, the rod-like body 51, the plate-like body 55, and the steel members 11 and 13 are fitted to the center position in the plate thickness direction, and the force is applied from any direction on both sides of the steel members 11 and 13 in the plate thickness direction. Even when this works, it can resist stably.

  The rod-like body 51 constituting the dowel member 5 may be embodied by a rod material such as an elliptical cross section or a polygonal cross section in addition to a circular cross section, and the cross sectional shape thereof is not particularly limited. Further, the material of the rod-shaped body 51 is not particularly limited. For example, the rod-shaped body 51 is made of metal such as steel or aluminum, fiber reinforced plastics, etc., but the strength, rigidity, and availability are easily obtained. From the viewpoint of safety, it is preferably made of steel.

  The male screw portion 52 provided on the outer peripheral surface of the rod-shaped body 51 and the female screw portion 35 provided in the fitting recess 3 of the upper-column steel member 11 for a column are not essential elements in the present invention. However, if there is the male screw portion 52 and the female screw portion 35, the rod-shaped body 51 will not fall out of the fitting recess 3 during the joining work of the adjacent steel members 11 and 13, and the workability during the joining work will be improved. Something is better because it will be. The female screw part 35 is provided in the insertion hole 31 of the steel member 13 on the lower floor side, the male screw part 52 of the rod-like body 51 is screwed into the female screw part 35 of the steel member 11 on the lower floor side, and One end side of the rod-shaped body 51 is projected from the joint end face 19 of the steel member 13 so that the insertion hole 31 of the upper-layer steel member 13 is fitted to one end side of the projected rod-shaped body 51. It may be. In order to maintain the state in which the dowel member 5 is fitted in the fitting recess 3 during the joining operation of the adjacent steel members 11, 13, the dowel member 5 is a steel member on the upper floor side or the lower floor side. 11 and 13 may be fixed by welding or the like.

Second Embodiment Next, a second embodiment of the steel member joining structure 1 to which the present invention is applied will be described. 4-6 has shown the structure of 2nd Embodiment of the joining structure 1 of the steel member. In addition, about the structure same as the structure of the joining structure 1 of the steel frame member in 1st Embodiment, while attaching | subjecting the same code | symbol, the description is abbreviate | omitted.

  In the second embodiment, as shown in FIGS. 4 (a) and 4 (c), a substantially circular through-hole 17 that penetrates the steel member 13 on the lower floor side in the thickness direction. Are provided over a plurality. The through-hole 17 passes through the insertion hole 31 (fitting recess 3) opened from the joint end surface 19 in the longitudinal direction of the steel frame member 13 so as to partially intersect. As a result, when a bolt or the like that fits in the through hole 17 is inserted, the bolt is partially exposed in the fitting recess 3 (insertion hole 31).

  Further, in the present embodiment, the rod-like body 51 (the dowel member 5) has a substantially arc shape on the side surface on the other end side in the major axis direction, as shown in FIGS. 4 (b) and 5 (a). A cutout groove 53 having a cutout shape is provided. As shown in FIG. 5 (b), the cutout groove 53 is formed when the other end side in the long axis direction of the rod-like body 51 is fitted into the insertion hole 31 of the steel member 13 on the lower floor side. The position is adjusted in advance so as to coincide with the position of the through hole 17 of the steel member 13 on the side.

  Using the dowel member 5 having such a configuration, a process of joining work for joining the steel member 11 on the upper floor side and the steel member 13 on the lower floor side will be described.

  First, as shown in FIG. 5 (a), one end side of the rod-shaped body 51 is fitted in the insertion hole 31 of the steel member 11 on the upper floor side in advance, and then the other end side of the rod-shaped body 51. Is fitted into the insertion hole 31 of the steel member 13 on the lower floor side. Accordingly, as shown in FIG. 5B, the rod-like body 51 (the dowel member 5) and the steel member 13 are penetrated by the through-hole 17 of the steel member 13 on the lower floor side and the notch groove 53 of the rod-like body 51. One through hole 18 is formed in the thickness direction of the steel frame member 13. Next, as shown in FIGS. 5C and 5D, a retaining member 7 made of a bolt or the like is inserted into the through hole 18, and the retaining member 7 is fixed with a nut or the like. The steel members 11 and 13 joined to each other are in a state as shown in FIG.

  This retaining member 7 is used when a force (tensile axial force) acts in a direction in which the adjacent steel members 11 and 13 are separated from each other after joining the adjacent steel members 11 and 13, or the steel members 11 and 13. When a bending moment is applied such that the stress at the tension edge of the wire exceeds the stress due to the compressive axial force at the normal time in absolute value, the rod-shaped body 51 is pulled out from the insertion hole 31 by engaging with the retaining member 7. It is possible to prevent this from coming off. Thereby, the joining state of the steel members 11 and 13 joined to each other is stabilized.

  The retaining member 7 is not particularly limited in terms of its configuration, shape, size, material, etc., as long as it has such operational effects. It may be embodied by a plate material or the like.

  Further, the shapes of the through holes 17 provided in the steel member 13 and the cutout grooves 53 of the rod-shaped body 51 are not particularly limited, and the steel member 13 is inserted so that the positions of the through holes 17 and the cutout grooves 53 coincide with each other. When the rod-shaped body 51 is fitted in the hole 31, the through-hole 17 and the notch groove 53 form a single through-hole 18, and the retaining member 7 may be inserted into the through-hole 18. . In addition, the rod-like body 51 may be provided with a through hole 57 instead of the notch groove 53 as in the embodiment described later.

  These through-holes 17 and notch grooves 53 are formed by a simple process such as a drilling process for the steel members 11 and 13 and the rod-shaped body 51 before or after the steel members 11 and 13 to be joined to each other. It is obtained by applying. In particular, when the through hole 18 is provided after the steel members 11 and 13 are joined, the steel members 11 and 13 and the rod 51 are simply formed by drilling a drill hole in the vicinity of the portion where the rod 51 is fitted. In addition, it is very easy to apply the retaining member 7 because the through hole 17 and the notch groove 53 can be provided at the same time. Here, after joining the steel members 11 and 13, as shown in FIG. 3A, the joining end surfaces 19 of the steel members 11 and 13 to be joined to each other are arranged in contact with each other and overlapped. This means that the dowel member 5 is fitted over the fitting recess 3.

  Of course, the retaining member 7 may be applied not only to one of the steel members 11 and 13 to be joined to each other but to both. When the retaining member 7 is applied to both the steel members 11 and 13, the rod-shaped body 51 is not attached to the steel member 11 on the upper floor side without providing the male screw portion 52 described in the first embodiment on the rod-shaped body 51. It is possible to maintain the state in which the one end side is fitted, and the male screw portion 52 of the rod-like body 51 and the female screw portion 52 of the insertion hole 31 of the steel frame member 11 can be omitted, and the manufacturing cost can be reduced accordingly.

  In the above-described example, a nut is screwed into a bolt as the retaining member 7, thereby preventing the bolt from falling off. The bolt and nut need only be in a state in which the bolt is prevented from coming off by engaging the bolt with the notch groove 53 or the like of the rod-like body 51, and does not need to be tightened as required during normal bolt-nut joining. For this reason, since there is no restriction | limiting in particular about the axial diameter of a volt | bolt, a magnitude | size, a kind, etc., an inexpensive volt | bolt can be used.

Third Embodiment Next, a third embodiment of the steel member joining structure 1 to which the present invention is applied will be described. 7 and 8 show the configuration of the third embodiment of the steel member joining structure 1.

  In the third embodiment, as shown in FIG. 7, the attachment plate 9 is in contact with the side surfaces of the steel members 11 and 13 across the steel members 11 and 13 to be joined to each other. Further, the attachment plate 9 is joined to the member side surfaces of the steel members 11 and 13 by bolts 91. As shown in FIGS. 8 (a) and 8 (b), the two steel plates 11 and 13 to be joined to each other are so arranged that the two attachment plates 9 sandwich the steel members 11 and 13 from both sides of the members. Is provided. The splicing plate 9 that is in contact with the steel members 11 and 13 to be joined to each other is bolted to the side surface of the steel member 11 on the upper floor side and the steel member 13 on the lower floor side at two locations. 91 is joined.

  Similar to the retaining member 7 described in the second embodiment, the attachment plate 9 is used when a force (tensile axial force) acts in a direction to separate the adjacent steel members 11 and 13 from each other. It is possible to resist the tensile axial force. By applying this attachment plate 9, the joining state of the adjacent steel members 11 and 13 is stabilized.

  The accessory plate 9 is not particularly limited in its shape, size, material, etc., as long as it has such effects. Further, the attachment plate 9 is arranged at an arbitrary position regardless of the position where the dowel member 5 is provided. It is not always necessary to provide two of the attachment plates 9 so as to sandwich both side surfaces of the adjacent steel members 11 and 13, and at least one of the attachment plates 9 need only be provided on one surface of the steel members 11 and 13.

  Further, the bolt 91 joint may be a bearing joint or a friction joint. In addition, as described above, the bolt 91 and the nut are disposed so as to penetrate the accessory plate 9 and the steel members 11 and 13, thereby resisting the tensile axial force acting on the adjacent steel members 11 and 13. As long as it is possible, tightening required at the time of ordinary bolt-nut connection is not required, and an inexpensive bolt can be used. Of course, an axial force may be introduced when the bolt 91 is joined, and the tensile axial force acting on the adjacent steel members 11 and 13 may be resisted by the frictional force.

Fourth Embodiment Next, a fourth embodiment of the steel member joining structure 1 to which the present invention is applied will be described. 9-11 has shown the structure of 4th Embodiment of the joining structure 1 of the steel member.

  In the fourth embodiment, a plate-like body 55 having a substantially rectangular cross section is used as the dowel member 5 instead of the rod-like body 51 described in the above-described embodiment. Even when such a plate-like body 55 is used as the dowel member 5, the adjacent steel members 11 and 13 can be joined while obtaining the desired effect as described above.

  The plate-like body 55 is embodied by a steel plate or the like, but there is no particular question about the material thereof, and the shape thereof is substantially elliptical in cross section, substantially polygonal in addition to a substantially rectangular cross section. It is embodied from the board material.

  In addition, when using the dowel member 5 comprised from such a plate-shaped body 55, when applying the retaining member 7 as described in the second embodiment, for example, as described below It is embodied by the form.

  As shown in FIG. 10 (a), the upper steel member 11 and the lower steel member 13 are provided with substantially circular through holes 17 penetrating in the thickness direction. The through hole 17 is provided so as to overlap with the insertion hole 31 at a part thereof. In addition, two substantially circular through holes 57 penetrating in the thickness direction are provided in the upper and lower portions of the plate-like body 55. As shown in FIG. 10B, the through-holes 57 are formed in the steel members 11 and 13 when fitted into the insertion holes 31 of the steel members 11 and 13 on the upper floor side and the lower floor side. The position is adjusted in advance so as to coincide with the position of the provided through hole 17.

  The process of the joining operation | work which mutually joins the steel frame members 11 and 13 which consist of such a structure is demonstrated.

  First, as shown in FIG. 10 (a), the upper and lower portions of the plate-like body 55 are fitted into the insertion hole 31 of the steel member 11 on the upper floor side and the insertion hole 31 of the steel member 13 on the lower floor side. Let As a result, as shown in FIG. 10 (b), one through the plate body 55 and the steel members 11, 13 by the through hole 57 of the plate body 55 and the through holes 17 of the steel members 11, 13. The through hole 17 is formed toward the thickness direction of the steel member 13. Thereafter, as shown in FIGS. 10C and 10D, the retaining member 7 is inserted into the through hole 17, and the retaining member 7 is fixed with a nut or the like. Thereby, the adjacent steel frame members 11 and 13 are joined in a state as shown in FIG.

  As described above, when the dowel member 5 composed of the plate-like body 55 is used, compared to the case where the rod-like body 51 is used as the dowel member 5, the area that resists pressure against the hole side wall of the insertion hole 31. Can be ensured, and the strength of the dowel member 5 can be increased. Further, when the dowel member 5 composed of the plate-like body 55 is used, compared with the case where the rod-like body 51 is used as the dowel member 5, a projection area in a side view can be easily secured. For example, it is possible to easily perform a treatment such as providing the through hole 17.

Fifth Embodiment Next, a fifth embodiment of the steel member joining structure 1 to which the present invention is applied will be described. FIGS. 12-16 has shown the structure of 5th Embodiment of the joining structure 1 of the steel member.

  In 5th Embodiment, as shown to Fig.12 (a), the fitting recessed part 3 is extended toward the plate | board thickness direction of the steel frame members 11 and 13, and the groove | channel cut by the cross-sectional substantially semicircle shape. It is comprised by the shape fitting groove part 33 of a shape. The fitting groove 33 is adjusted in advance so as to be provided at a position corresponding to each other on each joint end surface 19 when the joint end surfaces 19 of the steel members 11 and 13 to be joined are arranged in contact with each other. ing. Thereby, a set of fitting groove portions of the fitting groove portion 33 of the steel member 11 on the upper floor side and the fitting groove portion 33 of the steel member 13 on the lower floor side are formed in the joint portion 2 of the adjacent steel members 11 and 13. Thus, one through hole penetrating in the thickness direction of the steel members 11 and 13 is formed.

  In the present embodiment, the dowel member 5 is configured as a groove dowel member 59 made of a rod having a major axis direction in the thickness direction of the steel members 11 and 13. As shown in FIGS. 12B and 13, the groove dowel member 59 is fitted and disposed in the set of fitting grooves 59 across the set of fitting grooves 33. It will be.

  When joining the steel members 11 and 13 using the groove dowel member 59 having such a configuration, the same procedure as the joining process described in the first embodiment may be performed. You may carry out in the procedure like this.

  First, it arrange | positions so that the joining end surface 19 of the steel member 11 of the upper floor side and the joining end surface 19 of the steel member 13 of the lower floor side may mutually contact | abut. After this, in a set of fitting groove portions 33 formed by the fitting groove portions 33 of the upper-floor side steel member 11 and the lower-floor side steel member 13, the groove dowels are formed from the side surfaces of the steel members 11 and 13. The member 59 is inserted and arranged. As described above, when the groove dowel member 59 is used, the groove dowel member 59 can be fitted after the arrangement work of the adjacent steel members 11 and 13 is completed.

  In addition to this, after the arrangement work of the steel member 11 on the upper floor side and the steel member 13 on the lower floor side where the fitting groove portion 33 is not provided is completed, a drill or the like is performed from the side surface of the steel members 11 and 13. It is also possible to form through holes in the respective joint end faces 19 using these and to fit the groove dowel member 59 into the formed through holes later. Thereby, it becomes possible to simplify the process of joining the steel members 11 and 13.

  The fitting groove 33 may be cut into any shape such as a substantially rectangular shape, a substantially polygonal shape, a substantially half-elliptical ellipse shape as well as a case where the cross section thereof is a substantially semicircular shape, and at least the steel members 11 and 13. What is necessary is just a groove shape extended toward the plate | board thickness direction. Accordingly, the groove dowel member 59 only needs to be formed in an outer surface shape that is substantially the same as the inner surface shape of the pair of fitting groove portions 59.

  In addition, when such a groove | channel dowel member 59 is used, the structure which fixes the groove | channel dowel member 59 in the both sides of the plate | board thickness direction of the steel frame members 11 and 13 after completion of joining operation | work of the adjacent steel frame members 11 and 13 has the structure. Therefore, there may be a case where the groove dowel member 59 falls off. For this reason, as shown in FIGS. 14 and 15, it is preferable to use the accessory plate 9 described in the third embodiment.

  The attachment plate 9 is disposed so as to stride over the steel members 11 and 13 to be joined to each other and in contact with both side surfaces of the steel members 11 and 13 and is joined to the side surfaces by bolts 91. . The accessory plate 9 is provided so as to cover the groove dowel member 59 fitted in the pair of fitting groove portions 33 from both sides of the steel members 11 and 13 in the plate thickness direction.

  This makes it possible to resist the tensile axial force acting on the steel members 11 and 13 joined to each other while preventing the groove dowel member 59 from falling off from both sides of the steel members 11 and 13 in the plate thickness direction. .

Sixth Embodiment Next, a sixth embodiment of the steel member joining structure 1 to which the present invention is applied will be described. 16 and 17 show the configuration of the sixth embodiment of the steel member joining structure 1.

  In the sixth embodiment, a hook member 61 is used as the dowel member 5 as shown in FIGS. 16 (a) and 16 (b). The hook member 61 has a flat base end portion 62 having a substantially rectangular cross section, and extends from one end portion in the longitudinal direction of the base end portion 62 toward the front, and has a width shorter than the length in the width direction of the base end portion 62. The intermediate part 63, the front-end | tip part 64 provided in the front of the intermediate | middle part 63, and the engaging part 65 extended toward back from both sides of the front-end | tip part 64 are provided. The engaging portion 65 has inclined surfaces 66 that are continuous from both sides of the front surface of the distal end portion 64, and the inclined surfaces 66 extend in the width direction of the hook member 61 from the front to the rear of the hook member 61. It is inclined to extend outward.

  The engaging portion 65 is configured to be biased toward the outside of the hook member 61. As means for applying an urging force to the engaging portion 65, the engaging portion 65 is made of metal and embodied by elastic deformation of the engaging portion 65 itself, or a metal spring member is provided inside the engaging portion 65. Any means such as embedding or attaching a rubber spring member to the surface of the engaging portion 65 may be applied.

  Further, in the sixth embodiment, as shown in FIGS. 16C and 16D, the fitting recess 3 between the steel member 11 on the upper floor side and the steel member 13 on the lower floor side is substantially omitted. It is composed of a rectangular insertion hole 31. The insertion hole 31 of the steel member 11 on the upper floor side is adjusted so that it can be fitted to the other end side (upper side in the drawing) of the base end portion 62 of the hook member 61. The insertion hole 31 of the steel frame member 13 is adjusted so that it can be fitted to other portions except for the other end side in the longitudinal direction of the base end portion 62 of the hook member 61.

  For the steel member 13 on the lower floor side, a substantially rectangular through hole 21 for locking penetrating in the thickness direction is provided. The two through holes 21 for locking are provided for each insertion hole 31 so as to penetrate both side portions of the insertion hole 31 of the steel member 13 on the lower floor side.

  The length L3 from the side end portion 67 of one engaging portion 65 to the side end portion 67 of the other engaging portion 65 in the hook member 61 is the length in the width direction of the insertion hole 31 of the steel member 13 on the lower floor side. It is longer than L2.

  A process of joining work for joining the steel members 11 and 13 to each other using the hook member 61 having such a configuration will be described.

  First, as shown in FIG. 17A, the other end side in the longitudinal direction of the base end portion 62 of the hook member 61 is inserted into the insertion hole 31 (fitting recess 3) of the steel member 11 on the upper floor side. The base end portion 62 of the hook member 61 is fitted into the insertion hole 31. Thereby, the one end side of the longitudinal direction of the base end part 62 of the hook member 61 protrudes from the joining end surface 10 of the steel frame member 11 on the upper floor side.

  Next, as shown in FIG. 17B, the tip 63 of the hook member 61 is inserted into the insertion hole 31 of the steel member 13 on the lower floor side. In this case, since the length L3 of the engaging portion 65 of the hook member 61 is longer than the length L2 of the insertion hole 31 in the width direction, the distal end portion 64 of the hook member 61 is inserted into the insertion hole 31. Accordingly, the side wall of the insertion hole 31 presses the engaging portion 65 toward the inside of the hook member 61 via the inclined surface 66 of the hook member 61, whereby the engaging portion 65 of the hook member 61 is moved inward. It becomes a closed shape.

  Then, as shown in FIG. 17C, when the distal end portion 64 of the hook member 61 reaches the hole bottom portion of the insertion hole 31, the engaging portions 65 provided on both sides of the hook member 61 become hook member 61. Since it is urged toward the outside of the insertion hole 31, it is expanded into the locking through-holes 21 provided on both sides in the width direction of the insertion hole 31. Here, since the length L3 of the hook member 61 is longer than the width direction length L2 of the insertion hole 31, the steel member 11 on the upper floor side to which the hook member 61 is attached is lifted upward. Even so, the engaging portion 65 of the hook member 61 is locked in the locking through-hole 21. Thereby, the joining state of the steel frame members 11 and 13 joined to each other is further stabilized.

  Thus, when the hook member 61 is used, the hook member 61 can function as the dowel member 5 described in the first embodiment, and the adjacent steel member described in the second embodiment or the like. 11 and 13 can also function as a member that resists the tensile axial force acting on them.

Seventh Embodiment Next, a seventh embodiment of the steel member joining structure 1 to which the present invention is applied will be described. FIGS. 18 and 19 show the configuration of the seventh embodiment of the steel member joining structure 1.

  In the seventh embodiment, as shown in FIG. 18 and FIG. 19A, the fitting recess 3 is not provided for the joint end surface 19 of the steel member 11 on the upper floor side. One end of the dowel member 5 is fixed to the joining end surface 19 of the upper-layer steel member 11 by welding W or the like. As a result, the dowel member 5 is protruded from the joining end surface 19 of the upper steel member 11 toward the joining end surface 19 of the lower steel member 11.

  Moreover, at least one or more fitting recesses 3 as described in other embodiments are provided on the joining end surface 19 of the steel member 13 on the lower floor side. As shown in FIG. 19B, the dowel member 5 protruding from the joining end face 19 of the steel member 11 on the upper floor side is fitted into the fitting recess 3 of the steel member 11 on the lower floor side. become.

  Thus, in the present invention, the dowel member 5 may be directly fixed to one of the joining end surfaces 19 and fitted into the fitting recess 3 of the other joining end surface 19. Even in this case, the desired effects as described above can be obtained. The form in which the dowel member 5 is fixed to any one of the joining end faces 19 can be applied to any of the rod-like body 51, the plate-like body 55, the groove dowel member 59, and the hook member 61.

  As in the above-described embodiment, a set of fitting recesses 3 is provided on each joint end surface 19 of the steel members 11 and 13 to be joined to each other, and the dowel member 5 is provided in the set of fitting recesses 3. It is desirable to fit them. Thereby, it becomes possible to support and resist against the side walls in the respective fitting recesses 3 of the steel members 11 and 13 to be joined to each other, and the strength of the dowel member 5 can be ensured.

  In addition, although the form mentioned above was demonstrated as a form used when joining the steel member used as a pillar of a building structure toward the longitudinal direction, this invention is a steel frame used as a beam of a building structure. The present invention can also be applied to members (hereinafter referred to as beam steel members). However, unlike a steel member used as a column, a shearing force and a bending moment are greatly applied to the joint of the steel member for beams. Therefore, when the present invention is applied to join a plurality of beam steel members in the longitudinal direction, the structure can resist a tensile axial force acting between the beam steel members joined to each other. Therefore, it is necessary to use the retaining member 7 in the second embodiment described above, the accessory plate 9 in the third embodiment, or the hook member 61 in the sixth embodiment.

  The operation and effect when the present invention is applied to a plurality of beam steel members will be described. A large shearing force and bending moment are normally applied to the joints of the plurality of beam steel members, and a large compressive axial force and tensile axial force are applied during an earthquake. Here, since the joint end surfaces in the joint portion of the steel frame member for beams are not metal touched to each other, the compressive axial force acting on the joint portion is not sufficiently transmitted through the joint end surface, but is sheared through the dowel member 5. Forces, bending moments, and the like can be transmitted, and a compression axial force and a tensile axial force can be transmitted by the retaining member 7, the attachment plate 9, and the like. For this reason, it is possible to join a plurality of beam steel members to be joined together while simplifying the joining structure.

  Next, an embodiment of a steel member joining structure to which the present invention is applied will be described. 18 to 20 are schematic cross-sectional views illustrating the structure of the joint portion of the steel member joining structure to which the present invention is applied.

  In the steel member 13 shown in FIGS. 20A to 21D and 21A to 21D, intermediate portions of flange portions 16 that are substantially parallel to each other are integrated on both sides of the web portion 15. It is comprised from the H-section steel in which the cross-sectional shape was attached substantially, and was substantially H-shaped. 20 (a), FIG. 20 (c), FIG. 21 (a), and FIG. 21 (c) have a web width H of 498 mm, a flange width B of 432 mm, a web thickness t1 of 45 mm, and a flange. The H-shaped steel shown in FIGS. 20 (b), 20 (d), 21 (b) and 21 (d) has a web width H of 612 mm and a flange width B of 520 mm. The web thickness t1 is 70 mm and the flange thickness t2 is 80 mm.

  In the steel member 13 shown in FIGS. 20 (a) and 20 (b), a rod-like body 51 made of a steel rod having a circular cross section is fitted in an insertion hole 31 having a corresponding shape. A rod-shaped body 51 shown in FIG. 20 (a) has a diameter of 16 mm, a length of 40 mm in the major axis direction, and a length of 20 mm inserted into the insertion hole 31, the width direction of the web portion 15, and the flange portion. A total of 26 are provided at predetermined intervals in the 16 width direction. 20 (b) has a diameter of 24 mm, a length of 60 mm in the long axis direction, a length of 30 mm inserted through the insertion hole 31, the width direction of the web portion 15, and the flange portion. A total of 20 are provided at predetermined intervals in the 16 width direction.

  In the steel member 13 shown in FIGS. 20 (c) and 20 (d), a plate-like body 55 made of a steel plate having a rectangular cross section is fitted in the insertion hole 31 having a shape corresponding thereto. . The plate-like body 55 provided on the flange portion 16 shown in FIG. 20 (c) is configured with a length of 80 mm on the long side and a length of 24 mm on the short side formed by the rectangular cross section. The provided rod-shaped body 51 is configured with a length of 80 mm on the long side and a length of 16 mm on the short side formed by the rectangular cross section, each having a length in the longitudinal direction of 200 mm and being inserted into the insertion hole 31. The length is 100 mm. Further, the plate-like body 55 provided in the flange portion 16 shown in FIG. 20 (d) is configured such that the long side of the rectangular cross section has a length of 120 mm and the short side has a length of 24 mm. 15 has a long side of a rectangular cross section of 80 mm long and a short side of 24 mm long, each having a longitudinal length of 200 mm, and is inserted into the insertion hole 31. The length to be formed is 100 mm.

  In the steel member 13 shown in FIGS. 21 (a) to 21 (d), a groove dowel member 59 made of a steel bar having a circular cross section is fitted into a fitting groove 33 having a corresponding shape. ing. The groove dowel member 59 provided in the flange portion 16 shown in FIG. 21 (a) is configured with a diameter of 70 mm and a length in the major axis direction of 70 mm, and the groove dowel member 59 provided in the web portion 15 is 45 mm in diameter. The major axis is 45 mm long. The groove dowel member 59 provided on the flange portion 16 shown in FIG. 21 (b) is configured with a diameter of 80 mm and a length of 80 mm in the major axis direction, and the groove dowel member 59 provided on the web portion 15 is 70 mm in diameter. The major axis is 70 mm in length.

  The steel member 13 shown in FIGS. 21 (c) and 21 (d) is provided with a splicing plate 9 that straddles adjacent steel members and is disposed and fixed on both side surfaces of the steel members. Yes. The accessory plate 9 is provided so as to cover the groove dowel member 59 fitted in the fitting groove portion 33 from both sides in the plate thickness direction of the steel member. The accessory plate provided on the flange portion 16 shown in FIGS. 21C and 21D has a width direction length of 100 mm and a length direction length of 400 mm.

  The steel member 13 shown in FIG. 22 (a) is composed of a square steel pipe having a substantially square cross section. The steel frame member 13 has a length L4 of each side of 600 mm and a plate thickness t3 of each side of 80 mm. In the steel member 13, a rod-like body 51 made of a steel rod having a circular cross section is fitted in an insertion hole 31 having a corresponding shape. This rod-shaped body 51 is configured with a diameter of 22 mm and a length in the major axis direction of 150 mm.

  The steel member 13 shown in FIG. 22B is configured from a circular steel pipe having a substantially circular cross-sectional shape. The steel member 13 has a radius r1 from the central axis of the steel member to the outer peripheral surface of 300 mm and a plate thickness t4 of 80 mm. A rod-like body 51 made of a steel rod having a circular cross section is fitted into the insertion hole 31 having a shape corresponding to this steel member. This rod-shaped body 51 is configured with a diameter of 22 mm and a length in the major axis direction of 150 mm.

  In any case, the steel member and the attachment plate were made of 490N grade steel, and the dowel member was made of 14T grade steel. Each steel member is used as a pillar in a building structure.

(A) is a perspective view which shows the structure before joining of the adjacent steel member to which this invention is applied, (b) is a perspective view which shows the structure of a dowel member. It is a figure for demonstrating the process of the joining operation | work which joins the adjacent steel frame member. It is a perspective view which shows the structure after joining of the adjacent steel member to which this invention is applied. (A) is a perspective view which shows the structure before joining of the adjacent steel member demonstrated in 2nd Embodiment, (b) is a side view which shows the structure of a dowel member, (c) These are top views of the steel member on the lower floor side. It is a figure for demonstrating the process of the joining operation | work which joins the adjacent steel frame member. It is a perspective view which shows the structure after joining of the adjacent steel frame member demonstrated in 2nd Embodiment. It is a perspective view which shows the structure after joining of the adjacent steel frame member demonstrated in 3rd Embodiment. (A) is a side view which shows the structure after joining of the adjacent steel member, (b) is the cross-sectional view. It is a figure which shows the structure of the joining structure of the adjacent steel member demonstrated in 4th Embodiment, (a) is a perspective view which shows the structure before the joining, (b) is the structure after the joining FIG. It is a figure for demonstrating the process of the joining operation at the time of using a retaining member with respect to the adjacent steel member demonstrated in 4th Embodiment. It is a figure which shows the structure after joining at the time of using a retaining member with respect to the adjacent steel member demonstrated in 4th Embodiment, (a) is the perspective view, (b) is the crossing It is sectional drawing. It is a figure which shows the structure of the joining structure of the adjacent steel member demonstrated in 5th Embodiment, (a) is a perspective view which shows the structure before the joining, (b) is the structure after the joining FIG. It is a figure which shows the structure after joining of the adjacent steel member demonstrated in 5th Embodiment, (a) is the side view, (b) is the cross-sectional view. It is a perspective view which shows the structure at the time of using an attachment plate with respect to the adjacent steel frame member demonstrated in 5th Embodiment. It is a figure which shows the structure at the time of using an attachment plate with respect to the adjacent steel member demonstrated in 5th Embodiment, (a) is the side view, (b) is the cross-sectional view. . It is a figure which shows the structure of the penetration hole of the hook member used in 6th Embodiment, and the steel member of a lower floor side, (a) is a front view of a hook member, (b) is the AA line of a hook member. Sectional drawing, (c) is a side view near the insertion hole of the steel member on the lower floor side, and (d) is a plan view near the insertion hole of the steel member on the lower floor side. It is a figure for demonstrating the process of the joining operation | work of the steel frame member demonstrated in 6th Embodiment. It is a perspective view which shows the structure before joining of the adjacent steel frame member demonstrated in 7th Embodiment. It is a figure for demonstrating the process of the joining operation | work which joins the adjacent steel frame member demonstrated in 7th Embodiment. It is a figure for demonstrating an Example. It is a figure for demonstrating an Example. It is a figure for demonstrating an Example. It is a figure for demonstrating a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Joining structure 2 Joining part 3 Fitting recessed part 5 Dowel member 7 Retaining member 9 Attached plate 11 (For upper floor side pillar) Steel member 13 (For lower floor side pillar) Steel member 15 Web part 16 Flange part 17 Through-hole 19 Joint end face 21 Locking through-hole 31 Insertion hole 31a Hole bottom 33 Fitting groove 35 Female thread 51 Bar-shaped body 52 Male thread 53 Notched groove 55 Plate-shaped body 57 Through-hole 59 Groove dowel member 61 Hook member 62 Base end 63 Intermediate portion 64 Tip portion 65 Engaging portion 66 Inclined surface 67 Side end portion 91 Bolts 100, 110, 120 Bonding structures 101, 111, 121 Steel members 102, 112, 122 for upper floor columns Steel members 103 for lower floor columns Erection piece 104, 114 Saddle plate 105, 115, 125 High strength bolt 126 End plate 127 Rib

Claims (15)

  In a steel member joining structure for joining a plurality of steel members used as pillars of a building structure in the longitudinal direction, the steel members to be joined to each other have their joining end surfaces at the ends in the longitudinal direction. In addition to being disposed in contact with each other, at least one fitting recess is provided on one of the joining end faces, and a dowel member protruding from the other joining end face is fitted into the fitting recess. This is a structure for joining steel members.   The steel members arranged so that the joint end faces are in contact with each other are provided with at least one set of fitting recesses at positions corresponding to each other on the joint end face, and the set of fitting recesses includes dowels. The steel member joining structure according to claim 1, wherein the members are fitted.   The said fitting recessed part is comprised from the insertion hole opened toward the longitudinal direction of the steel frame member from the said joining end surface, The said dowel member is comprised from the rod-shaped body, The characterized by the above-mentioned. The structure for joining steel members according to claim 1.   The dowel member is composed of a rod-like body having a male threaded portion threaded on the outer peripheral surface on one end side in the major axis direction, and the insertion hole of one steel member to be joined to the inner peripheral surface has the above-mentioned A female screw part that can be screwed to the male screw part is provided, and the male screw part is screwed to the female screw part so that one end side of the rod-like body is fitted into the insertion hole of the one steel member. The steel member joining structure according to claim 3, wherein the steel member is joined.   3. The steel member joining structure according to claim 1, wherein the fitting recess includes a fitting groove extending in a thickness direction of the steel member.   6. The retaining member is inserted into a dowel member fitted in the fitting recess and a through hole penetrating the steel member. Of steel members.   The accessory plate is in contact with the side surface of the steel member across the steel member to be joined to each other, and the accessory plate is bolted to the side surface of the steel member to be joined to each other The steel member joining structure according to any one of claims 1 to 6.   The fitting recess is composed of a fitting groove extending in the plate thickness direction of the steel member, and an attachment plate is brought into contact with the side surface of the steel member across the steel members to be joined to each other, The dowel member is bolted to the side surfaces of the steel member to be joined to each other, and the dowel plate is fitted into the fitting groove from both sides in the plate thickness direction of the steel member. The steel member joining structure according to claim 1 or 2, wherein the steel member joining structure is provided so as to cover the steel member.   In a steel member joining structure for joining a plurality of steel members used as beams in a building structure in the longitudinal direction, the steel members to be joined to each other have their joint end surfaces at the ends in the longitudinal direction. In addition to being disposed in contact with each other, at least one fitting recess is provided on one of the joint end faces, and in the fitting recess, a dowel member protruding from the other joint end face is fitted, and A steel member joining structure, wherein a dowel member fitted in a fitting recess and a through hole penetrating the steel member are inserted into a retaining member.   In a steel member joining structure for joining a plurality of steel members used as beams in a building structure in the longitudinal direction, the steel members to be joined to each other have their joint end surfaces at the ends in the longitudinal direction. The dowel members projecting from the other joining end surface are fitted in the fitting recess, and are disposed in contact with each other, and at least one fitting recess is provided on one of the joining end surfaces. The accessory plate is brought into contact with the side surface of the steel member across the steel member to be joined, and the accessory plate is bolted to the side surface of the steel member to be joined to each other. Steel frame joint structure.   The steel members arranged so that the joint end faces are in contact with each other are provided with at least one set of fitting recesses at positions corresponding to each other on the joint end face, and the dowels are provided in the set of fitting recesses. The joining structure of the steel member according to claim 9 or 10, wherein the member is fitted.   The fitting recess includes a fitting groove extending in the thickness direction of the steel member, and the accessory plate is fitted into the fitting groove from both sides of the steel member in the thickness direction. The steel member joining structure according to claim 10 or 11, wherein the steel member is provided so as to cover the dowel member.   The said fitting recessed part is comprised from the penetration hole opened toward the longitudinal direction of the steel frame member from the said joining end surface, The said dowel member is comprised from the rod-shaped body, The 9th-11th characterized by the above-mentioned. The joining structure of the steel member of any one of these.   The dowel member is composed of a rod-like body having a male screw threaded on the outer peripheral surface on one end side in the long axis direction, and the insertion hole of any one of the adjacent steel members has an inner part thereof. A female screw part that can be screwed to the male screw part is provided on the peripheral surface, and the male screw part is screwed to the female screw part, whereby the rod-like body is inserted into the insertion hole of the one steel member. The steel member joining structure according to claim 13, wherein one end side is fitted.   15. A steel member used for a steel member joining structure according to any one of claims 1 to 14, wherein at least one of the fitting recesses is provided in advance on a joint end face thereof.

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